All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=829906

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7b6dc1d0dbdf670b80472ee0f510d6e8b21240fd8bf01cb36ec3cb3c7f4452e7


Bot(s) for this bug's original alert(s):

chromium-rel-win7-gpu-nvidia

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/11cdb4f8c40000

😿 Pinpoint job stopped with an error.
https://pinpoint-dot-chromeperf.appspot.com/job/11cdb4f8c40000

Dale, any ideas why the job failed?

We were overloaded with Gitiles requests due to a data migration earlier today. It cleared up around noon PDT, so I'll re-run now.

📍 Pinpoint job started.
https://pinpoint-dot-chromeperf.appspot.com/job/158079f8c40000

📍 Found significant differences after each of 2 commits.
https://pinpoint-dot-chromeperf.appspot.com/job/158079f8c40000

Move Buffer Subject/Observer to front end. by jmadill@chromium.org
https://chromium.googlesource.com/angle/angle/+/0946393dfd115f5d74abfc8ad4b8ef7b4d363503

Vulkan: Implement stencil test support by lucferron@chromium.org
https://chromium.googlesource.com/angle/angle/+/364a95571eeb2829669c1abafc93808ab67b0b8b

Understanding performance regressions:
  http://g.co/ChromePerformanceRegressions

Unsure why pinpoint decided two CLs were possibly suspect.

This is clearly because of 

Move Buffer Subject/Observer to front end. by jmadill@chromium.org
https://chromium.googlesource.com/angle/angle/+/0946393dfd115f5d74abfc8ad4b8ef7b4d363503

Will investigate. Removing unrelated folks from cc.

The following revision refers to this bug:
  https://chromium.googlesource.com/angle/angle/+/0ce016c1bd12916c0d30c0ded96b29681a9e4d09

commit 0ce016c1bd12916c0d30c0ded96b29681a9e4d09
Author: Jamie Madill <jmadill@chromium.org>
Date: Mon Apr 09 17:42:55 2018

FixedVector: Add "full" method.

Will be useful for an optimization to the Buffer Subject/Observer
pattern.

Also cleans up an ASSERT.

Bug:  angleproject:2389 
Bug:  chromium:829906 
Change-Id: I2f8313ab531bca61947a51cc2396c04fb5d4bb1d
Reviewed-on: https://chromium-review.googlesource.com/1002883
Reviewed-by: Luc Ferron <lucferron@chromium.org>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

[modify] https://crrev.com/0ce016c1bd12916c0d30c0ded96b29681a9e4d09/src/common/FixedVector.h
[modify] https://crrev.com/0ce016c1bd12916c0d30c0ded96b29681a9e4d09/src/common/FixedVector_unittest.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/afadafa5a61f1166e24115e6e7c7ba5b7618a378

commit afadafa5a61f1166e24115e6e7c7ba5b7618a378
Author: angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Tue Apr 10 01:02:21 2018

Roll src/third_party/angle/ bb52c5235..0ce016c1b (1 commit)

https://chromium.googlesource.com/angle/angle.git/+log/bb52c523556e..0ce016c1bd12

$ git log bb52c5235..0ce016c1b --date=short --no-merges --format='%ad %ae %s'
2018-04-09 jmadill FixedVector: Add "full" method.

Created with:
  roll-dep src/third_party/angle
BUG= chromium:829906 


The AutoRoll server is located here: https://angle-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=ynovikov@chromium.org

Change-Id: I65c0cb6b4fd6df9da34cd3bbad338ac9d05b8b8a
Reviewed-on: https://chromium-review.googlesource.com/1003315
Reviewed-by: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#549356}
[modify] https://crrev.com/afadafa5a61f1166e24115e6e7c7ba5b7618a378/DEPS

The following revision refers to this bug:
  https://chromium.googlesource.com/angle/angle/+/3418fe80e4e953e0b5a066ff0c5a3580376476bb

commit 3418fe80e4e953e0b5a066ff0c5a3580376476bb
Author: Jamie Madill <jmadill@chromium.org>
Date: Tue Apr 10 11:38:55 2018

Optimize Subject's binding method.

Using FixedVector, we can remove the need for dynamic allocation in
most of the use cases. Only when we exceed a certain amount of fixed
storage do we need to spill into the heap.

Bug:  angleproject:2389 
Bug:  chromium:829906 
Change-Id: Ib5f7073b58876bfd2400bd87b743bddcee5e5dc8
Reviewed-on: https://chromium-review.googlesource.com/1002884
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Luc Ferron <lucferron@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

[modify] https://crrev.com/3418fe80e4e953e0b5a066ff0c5a3580376476bb/src/libANGLE/Observer.h
[modify] https://crrev.com/3418fe80e4e953e0b5a066ff0c5a3580376476bb/src/libANGLE/Observer.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fcb9565683b9bb2ca6c0330fa6cbdfa9da9ce170

commit fcb9565683b9bb2ca6c0330fa6cbdfa9da9ce170
Author: angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Tue Apr 10 14:52:07 2018

Roll src/third_party/angle/ fe4bbe6cb..26084d0aa (3 commits)

https://chromium.googlesource.com/angle/angle.git/+log/fe4bbe6cbec6..26084d0aae38

$ git log fe4bbe6cb..26084d0aa --date=short --no-merges --format='%ad %ae %s'
2018-04-09 jmadill Vulkan: Create TextureVk's Image lazily.
2018-04-09 jmadill Optimize Subject's binding method.
2018-03-30 jiawei.shao Use ShaderBitSet for active use bits on uniforms

Created with:
  roll-dep src/third_party/angle
BUG= chromium:829906 


The AutoRoll server is located here: https://angle-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=ynovikov@chromium.org

Change-Id: I56fc6e687699170e99bd4d210db0b1ac88aedf48
Reviewed-on: https://chromium-review.googlesource.com/1005023
Commit-Queue: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#549528}
[modify] https://crrev.com/fcb9565683b9bb2ca6c0330fa6cbdfa9da9ce170/DEPS

 Issue 830665  has been merged into this issue.

The fix improved the regression on the buffer binding tests but didn't seem to help with the multiview tests or the Chromium regression. Looking again at these other tests.

The following revision refers to this bug:
  https://chromium.googlesource.com/angle/angle/+/2dadd1d08e236de0a18c6f43ddebe61308d228d1

commit 2dadd1d08e236de0a18c6f43ddebe61308d228d1
Author: Jamie Madill <jmadill@chromium.org>
Date: Wed Apr 11 14:13:12 2018

D3D11: Fix inactive attrib VAO perf regression.

In the case there are any dirty inactive attributes, we were
continually invalidating the Vertex Buffer and Input Layout
bindings. This fixes the invalidation to only happen when
there are any dirty active attributes.

This regressed in "Move Buffer Subject/Observer to front end."

Bug:  chromium:829906 
Bug:  angleproject:2389 
Change-Id: I8ed616bb696e0be548344192037ad6cc6f9c595c
Reviewed-on: https://chromium-review.googlesource.com/1006998
Reviewed-by: Luc Ferron <lucferron@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

[modify] https://crrev.com/2dadd1d08e236de0a18c6f43ddebe61308d228d1/src/libANGLE/renderer/d3d/d3d11/VertexArray11.cpp
[modify] https://crrev.com/2dadd1d08e236de0a18c6f43ddebe61308d228d1/src/libANGLE/renderer/d3d/d3d11/VertexArray11.h

 Issue 830775  has been merged into this issue.

More alerts in duplicate issues:

https://chromeperf.appspot.com/group_report?bug_id=830775
https://chromeperf.appspot.com/group_report?bug_id=830665

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cd2b9676d2a45d84d784da927bbd75ee0e62f0fa

commit cd2b9676d2a45d84d784da927bbd75ee0e62f0fa
Author: angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Thu Apr 12 01:01:30 2018

Roll src/third_party/angle/ ebd6e2df2..14f4817c4 (7 commits)

https://chromium.googlesource.com/angle/angle.git/+log/ebd6e2df290a..14f4817c4dad

$ git log ebd6e2df2..14f4817c4 --date=short --no-merges --format='%ad %ae %s'
2018-04-11 lucferron Vulkan: Simplify viewport / scissor updates
2018-04-11 cwallez cq.cfg: equivalent_to to 100% for Windows tryservers.
2018-04-11 jmadill D3D11: Fix inactive attrib VAO perf regression.
2018-03-31 jmadill Texture: Pass ImageIndex to relevant methods.
2018-04-08 jmadill Vulkan: Rename vk::LineLoopHelper.
2018-04-10 lucferron Vulkan: Cleanup some TODOs in TextureTest.cpp
2018-04-10 jdarpinian D3D11: Fix primitive topology dirty bit tracking.

Created with:
  roll-dep src/third_party/angle
BUG=chromium:815092, chromium:829906 , chromium:696345 


The AutoRoll server is located here: https://angle-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
TBR=ynovikov@chromium.org

Change-Id: Ib53f6489642caaae9657a7f69d4bd28c60527e19
Reviewed-on: https://chromium-review.googlesource.com/1008728
Reviewed-by: angle-chromium-autoroll <angle-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549981}
[modify] https://crrev.com/cd2b9676d2a45d84d784da927bbd75ee0e62f0fa/DEPS

Graphs have recovered and even improved the score somewhat.