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Issue 850539 link

Starred by 2 users

Issue metadata

Status: Fixed
Owner:
Closed: Dec 14
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Bug



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Add expiry to unused histograms.

Project Member Reported by gayane@chromium.org, Jun 7 2018

Issue description

Add expiry to unused histograms.

To cleanup histograms that have been unused for long time but still take resources from users add expiry.
 
Cc: csharrison@chromium.org
Gayane, could you say more about what "unused" means? I know there are some teams that regularly follow up on histogram eraser bugs to say that they still need the histogram data, even though our tools detect them as unused. I just want to make sure that we're not going to accidentally pull the rug out from such teams!
Isn't this go/expired-histograms-doc? For basically every "unused" histogram that I touch, I am fine with the histogram expiring according to the proposed feature.
Good to know! Thanks for chiming in =) (I'm not 100% sure whether that sentiment generalizes to other owners in a similar situation, FWIW – I cc'ed you because I'd *just* seen a Histogram Eraser bug go by where you'd chimed in.)

While I'm thinking about it: One somewhat related technical concern that I have is to make sure that we apply the same whitelist for histogram expiry as we do for unused histograms, i.e. the contents of the whitelisted_histograms.txt file. We probably get it "for free" if we're reusing the histogram eraser data, but it's probably a good idea to double-check!

Comment 4 by gayane@google.com, Jun 11 2018

Thanks for feedback. I didn't consider looking at whitelisted_histograms.txt but I will now. 

I am preparing a doc https://docs.google.com/document/d/1UNg3PwwA_weAhg90j225novopRANenrR-RDmRAq2cxA/edit?usp=sharing to document how the list of unused histograms was selected and a way to reproduce it.

This is meant to be a one time thing.
Thanks, Gayane! Would you mind opening up comment access on the doc, once it's in a state where you're ready for comments?

The comment that I would have liked to add at this stage is: I think it would be good to try to get as many of the added expiry dates reviewed by owners as possible. That way, we're less likely to accidentally drop any data that's in an unusual state.
Project Member

Comment 6 by bugdroid1@chromium.org, Jun 21 2018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fee797285bf7504465cc1cfe067189d5df583101

commit fee797285bf7504465cc1cfe067189d5df583101
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Thu Jun 21 22:47:12 2018

Add expiry to unused histograms with no owner.

Add expiry to histograms that are not used last 6 months
but report data in stable. More on how the histograms are selected
go/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I30eee223d5ee1a9d0a421e5ab79a207ea420b651
Reviewed-on: https://chromium-review.googlesource.com/1110021
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569382}
[modify] https://crrev.com/fee797285bf7504465cc1cfe067189d5df583101/tools/metrics/histograms/histograms.xml

Project Member

Comment 7 by bugdroid1@chromium.org, Jun 22 2018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d131a76bd53606def93e70e6003ab60c68f1b5eb

commit d131a76bd53606def93e70e6003ab60c68f1b5eb
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Fri Jun 22 14:54:08 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I31665bf71e42f703b38dad45da0891bd81ac669c
Reviewed-on: https://chromium-review.googlesource.com/1111475
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569623}
[modify] https://crrev.com/d131a76bd53606def93e70e6003ab60c68f1b5eb/tools/metrics/histograms/histograms.xml

Cc: henrika@chromium.org
Project Member

Comment 9 by bugdroid1@chromium.org, Jul 4

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ef5f0fa88e0bdb0e63054f1343813ceec1e26afd

commit ef5f0fa88e0bdb0e63054f1343813ceec1e26afd
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Jul 04 20:19:08 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I612d54210e1fb35cfbbd20d7fccb7b2323a21e29
Reviewed-on: https://chromium-review.googlesource.com/1126165
Reviewed-by: Gabriel Charette <gab@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572642}
[modify] https://crrev.com/ef5f0fa88e0bdb0e63054f1343813ceec1e26afd/tools/metrics/histograms/histograms.xml

Project Member

Comment 10 by bugdroid1@chromium.org, Jul 9

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cabd76988d94eded0512486a85426771bef818c3

commit cabd76988d94eded0512486a85426771bef818c3
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Mon Jul 09 22:58:56 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I538205f53ba84bf5b2aaf4104a09c080e9aab375
Reviewed-on: https://chromium-review.googlesource.com/1126162
Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573500}
[modify] https://crrev.com/cabd76988d94eded0512486a85426771bef818c3/tools/metrics/histograms/histograms.xml

Project Member

Comment 11 by bugdroid1@chromium.org, Jul 9

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/88c5836a63d27282d5bbf99745b1d6292e6ffa5d

commit 88c5836a63d27282d5bbf99745b1d6292e6ffa5d
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Mon Jul 09 23:04:11 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I04beeb4ecf69ca8b8bab1b53114c11d40dfb2ed4
Reviewed-on: https://chromium-review.googlesource.com/1111572
Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573505}
[modify] https://crrev.com/88c5836a63d27282d5bbf99745b1d6292e6ffa5d/tools/metrics/histograms/histograms.xml

Project Member

Comment 12 by bugdroid1@chromium.org, Jul 9

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/86d6073b15fc248ec45ddab341c2b81b0caa7a56

commit 86d6073b15fc248ec45ddab341c2b81b0caa7a56
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Mon Jul 09 23:14:44 2018

Set an expiry date for unused histograms (Net.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I84a9b876102f223e46da4314a5b616d245a46358
Reviewed-on: https://chromium-review.googlesource.com/1126319
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Ryan Hamilton <rch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573510}
[modify] https://crrev.com/86d6073b15fc248ec45ddab341c2b81b0caa7a56/tools/metrics/histograms/histograms.xml

Project Member

Comment 13 by bugdroid1@chromium.org, Jul 9

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/701899790eed709bead0b8f61ca147fb3c23ef1c

commit 701899790eed709bead0b8f61ca147fb3c23ef1c
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Mon Jul 09 23:14:59 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I5bb941b74e051648a8863bcc6922f3c43b6eb51f
Reviewed-on: https://chromium-review.googlesource.com/1126337
Reviewed-by: Taiju Tsuiki <tzik@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573511}
[modify] https://crrev.com/701899790eed709bead0b8f61ca147fb3c23ef1c/tools/metrics/histograms/histograms.xml

Project Member

Comment 14 by bugdroid1@chromium.org, Jul 9

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8a172cded1e59686c9d258fd6034553a1504f854

commit 8a172cded1e59686c9d258fd6034553a1504f854
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Mon Jul 09 23:21:40 2018

Set an expiry date for unused histograms (Media.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I517af72120c9748a1e2a09756e832bea20000928
Reviewed-on: https://chromium-review.googlesource.com/1126167
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Henrik Andreasson <henrika@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573514}
[modify] https://crrev.com/8a172cded1e59686c9d258fd6034553a1504f854/tools/metrics/histograms/histograms.xml

Project Member

Comment 15 by bugdroid1@chromium.org, Jul 10

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1ee58ae3992df7549b27ed5aef115c284e9590b0

commit 1ee58ae3992df7549b27ed5aef115c284e9590b0
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Jul 10 00:09:37 2018

Set an expiry date for unused histograms (GCM.*, WebHistory.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ida5724a5c8587a72c2474189f8888e6c23b12f24
Reviewed-on: https://chromium-review.googlesource.com/1126206
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Nicolas Zea <zea@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573541}
[modify] https://crrev.com/1ee58ae3992df7549b27ed5aef115c284e9590b0/tools/metrics/histograms/histograms.xml

Project Member

Comment 16 by bugdroid1@chromium.org, Jul 10

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d420cd60450f33a1ba57d9005065f10cb1333f27

commit d420cd60450f33a1ba57d9005065f10cb1333f27
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Jul 10 00:12:13 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ie3dea1da3f7a42b0454a79ea1ca77a153629ddc9
Reviewed-on: https://chromium-review.googlesource.com/1126174
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573543}
[modify] https://crrev.com/d420cd60450f33a1ba57d9005065f10cb1333f27/tools/metrics/histograms/histograms.xml

Project Member

Comment 17 by bugdroid1@chromium.org, Jul 10

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7b7654052b648b6fd2e73617788a87ecacdb7eee

commit 7b7654052b648b6fd2e73617788a87ecacdb7eee
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Jul 10 01:16:41 2018

Set an expiry date for unused histograms (SBIRS.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: If0342cd7fe8f4059aff7bdabfb5b756a8b895dee
Reviewed-on: https://chromium-review.googlesource.com/1111563
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Reviewed-by: proberge <proberge@chromium.org>
Reviewed-by: Cait Phillips <caitkp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573581}
[modify] https://crrev.com/7b7654052b648b6fd2e73617788a87ecacdb7eee/tools/metrics/histograms/histograms.xml

Project Member

Comment 18 by bugdroid1@chromium.org, Jul 10

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/78c0b6990949662b3d0f48c0fb1efbaf0b0a77f2

commit 78c0b6990949662b3d0f48c0fb1efbaf0b0a77f2
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Jul 10 21:13:00 2018

Set an expiry date for unused histograms (SBClientDownload.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I0855e4e9699aa106ac75484b14741d6f2adf6704
Reviewed-on: https://chromium-review.googlesource.com/1111470
Reviewed-by: Asanka Herath <asanka@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573906}
[modify] https://crrev.com/78c0b6990949662b3d0f48c0fb1efbaf0b0a77f2/tools/metrics/histograms/histograms.xml

Cc: -csharrison@chromium.org
Project Member

Comment 20 by bugdroid1@chromium.org, Jul 23

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b

commit b47e22b652e4b3776cf9dd8b3efe3398a8b4078b
Author: Victor Costan <pwnall@chromium.org>
Date: Mon Jul 23 20:57:02 2018

IndexedDB: Remove WebCore.IndexedDB.FrontEndAPICalls UMA histogram.

The metrics have not been used in a while, and have no immediately clear
use case.

Bug:  850539 
Change-Id: If11dcadf946bc66071ecb85aa126981a149193b3
Reviewed-on: https://chromium-review.googlesource.com/1146076
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Commit-Queue: Daniel Murphy <dmurph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577249}
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/third_party/blink/renderer/modules/indexeddb/BUILD.gn
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/third_party/blink/renderer/modules/indexeddb/idb_database.cc
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/third_party/blink/renderer/modules/indexeddb/idb_database.h
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/third_party/blink/renderer/modules/indexeddb/idb_factory.cc
[delete] https://crrev.com/743d97bb444ef5c4dbb7611615bce587757afe5b/third_party/blink/renderer/modules/indexeddb/idb_histograms.h
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/b47e22b652e4b3776cf9dd8b3efe3398a8b4078b/tools/metrics/histograms/histograms.xml

Project Member

Comment 21 by bugdroid1@chromium.org, Jul 30

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d49fdae6d15c7efaee6fb15a25c9b15f51ad6787

commit d49fdae6d15c7efaee6fb15a25c9b15f51ad6787
Author: Victor Costan <pwnall@chromium.org>
Date: Mon Jul 30 23:39:20 2018

Remove logging for unused UMA histogram Quota.LRUOriginTypes.

Bug:  850539 
Change-Id: I24fe05cb8a909ceb181df643aeaf75c5007a4a3d
Reviewed-on: https://chromium-review.googlesource.com/1154999
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579235}
[modify] https://crrev.com/d49fdae6d15c7efaee6fb15a25c9b15f51ad6787/storage/browser/quota/quota_database.cc
[modify] https://crrev.com/d49fdae6d15c7efaee6fb15a25c9b15f51ad6787/tools/metrics/histograms/enums.xml
[modify] https://crrev.com/d49fdae6d15c7efaee6fb15a25c9b15f51ad6787/tools/metrics/histograms/histograms.xml

Project Member

Comment 22 by bugdroid1@chromium.org, Aug 14

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ee777c019d8c0ea50fc9d224388eb807774787df

commit ee777c019d8c0ea50fc9d224388eb807774787df
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Aug 14 16:55:22 2018

Set an expiry date for unused histograms (Extensions.*Permissions*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I7d7e2967caa586a221b50a64b5769c281777e4df
Reviewed-on: https://chromium-review.googlesource.com/1126324
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582946}
[modify] https://crrev.com/ee777c019d8c0ea50fc9d224388eb807774787df/tools/metrics/histograms/histograms.xml

Project Member

Comment 23 by bugdroid1@chromium.org, Aug 14

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1c63da45aa2042236afb37c758119be413262fec

commit 1c63da45aa2042236afb37c758119be413262fec
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Aug 14 21:12:22 2018

Set an expiry date for unused histograms (Download.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ic01c7e6444cf45c2cc42bf58a6207bd3216b92f5
Reviewed-on: https://chromium-review.googlesource.com/1126400
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583033}
[modify] https://crrev.com/1c63da45aa2042236afb37c758119be413262fec/tools/metrics/histograms/histograms.xml

Project Member

Comment 24 by bugdroid1@chromium.org, Aug 21

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/def4c5c79f27879310d32906121d48d3291724f6

commit def4c5c79f27879310d32906121d48d3291724f6
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Aug 21 19:41:26 2018

Set an expiry date for unused histograms (Extension*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ia7d065d7786ece8cdb0dbad78de13c0f9a699290
Reviewed-on: https://chromium-review.googlesource.com/1111473
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584883}
[modify] https://crrev.com/def4c5c79f27879310d32906121d48d3291724f6/tools/metrics/histograms/histograms.xml

Project Member

Comment 25 by bugdroid1@chromium.org, Aug 21

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/92b6a49660ca370c2354b910a29149b27e6503de

commit 92b6a49660ca370c2354b910a29149b27e6503de
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Tue Aug 21 20:49:19 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I437ea5c000a3a4fe3a065dd51641de44a27a6fa9
Reviewed-on: https://chromium-review.googlesource.com/1126321
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584894}
[modify] https://crrev.com/92b6a49660ca370c2354b910a29149b27e6503de/tools/metrics/histograms/histograms.xml

Project Member

Comment 26 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e17cb99474da0d0369b53e4e383ca65acc8ee633

commit e17cb99474da0d0369b53e4e383ca65acc8ee633
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 00:35:52 2018

Set an expiry date for unused histograms (Chromoting.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Idac6a13a32465359102228499e05238da53a5e97
Reviewed-on: https://chromium-review.googlesource.com/1111468
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584935}
[modify] https://crrev.com/e17cb99474da0d0369b53e4e383ca65acc8ee633/tools/metrics/histograms/histograms.xml

Project Member

Comment 27 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6466c6d2c02ed48eb1f4c53bce45e9e00c261e00

commit 6466c6d2c02ed48eb1f4c53bce45e9e00c261e00
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 17:08:47 2018

Set an expiry date for unused histograms (Conflicts.*, ThirdPartyModules.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 

Change-Id: I6915b08846dd50f587dded3544b990334615d4bc
Reviewed-on: https://chromium-review.googlesource.com/1111597
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585109}
[modify] https://crrev.com/6466c6d2c02ed48eb1f4c53bce45e9e00c261e00/tools/metrics/histograms/histograms.xml

Project Member

Comment 28 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ec0b8cf694a1abca703d7e839b8e2eb49917db42

commit ec0b8cf694a1abca703d7e839b8e2eb49917db42
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 17:17:24 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Iaeae7928bc4d14d92db53526373d8e9931ac106a
Reviewed-on: https://chromium-review.googlesource.com/1126177
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585116}
[modify] https://crrev.com/ec0b8cf694a1abca703d7e839b8e2eb49917db42/tools/metrics/histograms/histograms.xml

Project Member

Comment 29 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b73d0f475c637143e98ddf5d1a9c439f8b597c9d

commit b73d0f475c637143e98ddf5d1a9c439f8b597c9d
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 17:19:42 2018

Set an expiry date for unused histograms.

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ie73f2b6256c39cc5b9df211af257f4537d985da6
Reviewed-on: https://chromium-review.googlesource.com/1126201
Reviewed-by: Peter Beverloo <peter@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585120}
[modify] https://crrev.com/b73d0f475c637143e98ddf5d1a9c439f8b597c9d/tools/metrics/histograms/histograms.xml

Project Member

Comment 30 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b5e045e50ff8d784be320df6308ef11a610cbdfb

commit b5e045e50ff8d784be320df6308ef11a610cbdfb
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 20:37:24 2018

Set an expiry date for unused histograms (NaCl.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ic888995f3a49848ecfe96c2aea55c1d2d365924c
Reviewed-on: https://chromium-review.googlesource.com/1126328
Reviewed-by: Derek Schuff <dschuff@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585233}
[modify] https://crrev.com/b5e045e50ff8d784be320df6308ef11a610cbdfb/tools/metrics/histograms/histograms.xml

Project Member

Comment 31 by bugdroid1@chromium.org, Aug 22

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e9e199aabff7891f506703c7674e719a22072a24

commit e9e199aabff7891f506703c7674e719a22072a24
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Wed Aug 22 21:02:44 2018

Set an expiry date for unused histograms (Network.3G.*, Network.Shill.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: Ib8f8c0b136f5851e4bd628030bf4b01395bf7e3a
Reviewed-on: https://chromium-review.googlesource.com/1111559
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585241}
[modify] https://crrev.com/e9e199aabff7891f506703c7674e719a22072a24/tools/metrics/histograms/histograms.xml

Project Member

Comment 32 by bugdroid1@chromium.org, Oct 26

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c4ab78c0f9fa13ff61fe35fe8d89aa6fbaaa70e9

commit c4ab78c0f9fa13ff61fe35fe8d89aa6fbaaa70e9
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Fri Oct 26 00:41:15 2018

Set an expiry date for unused histograms (Search.ContextualSearch*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after M71. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I541a6cba2d620d8a96f92ac3d95a96de54dd63dc
Reviewed-on: https://chromium-review.googlesource.com/c/1126200
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Donn Denman <donnd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602950}
[modify] https://crrev.com/c4ab78c0f9fa13ff61fe35fe8d89aa6fbaaa70e9/tools/metrics/histograms/histograms.xml

Project Member

Comment 33 by bugdroid1@chromium.org, Oct 26

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ccdb55838495bf86d2db63d291fe2ef68cfca822

commit ccdb55838495bf86d2db63d291fe2ef68cfca822
Author: Gayane Petrosyan <gayane@chromium.org>
Date: Fri Oct 26 22:30:07 2018

Set an expiry date for unused histograms (Quickoffice.*)

These are histograms that have not been viewed in the last 6 months, but still
report data on the Stable channel. Set these histograms to stop being recorded
for Chrome releases after 2018-08-30. We will file bugs via Monorail (crbug)
reminding owners about the approaching histogram expiry – initially 30 days
prior to expiry, and also with follow-up alerts. The metrics dashboards will
also display a warning for anyone viewing a soon-to-expire histogram.

Owners and/or users of these histograms: Please comment on this CL if you think
that any affected histogram should not have an expiry date set! This should be
uncommon.

Otherwise, there are a few options going forward:
  * If the histogram is no longer needed, please send a follow-up CL to delete
    the recording code and to mark the histogram as <obsolete>. (You can also
    remove the expiry date in the same CL.)
  * If you want to set a different expiry date, please send a follow-up CL to do
    so.
  * If neither of the above apply, then keep an eye out for Monorail bugs as the
    histogram expiry date approaches.
For more info on how unused histograms are identified, see
https://goto.google.com/uma-unused-histograms-cleanup

Bug:  850539 
Change-Id: I28711dd547ecc0d7ab0c45d507bbdc8749b8d093
Reviewed-on: https://chromium-review.googlesource.com/c/1126170
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603221}
[modify] https://crrev.com/ccdb55838495bf86d2db63d291fe2ef68cfca822/tools/metrics/histograms/histograms.xml

Status: Fixed (was: Assigned)

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