The first occurrence seems to be

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20%28dbg%29/builds/8512

I don't see an obvious culprit between recently landed CLs landed during this build and a few builds before. I'll update the expectations for this test and assign to fs@opera.com who seems to be most active in this area.

Specifically disabling on Linux (dbg), since other Linux WebKit bots don't show this flake.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f540d6bc78f31f20b45efee05fd2797877ffa9ec

commit f540d6bc78f31f20b45efee05fd2797877ffa9ec
Author: msramek <msramek@chromium.org>
Date: Mon Jul 25 11:33:59 2016

Disable the flaky test svg/parser/whitespace-length-invalid-2.html

TBR=fs@opera.com
BUG= 630967 

Review-Url: https://codereview.chromium.org/2181633002
Cr-Commit-Position: refs/heads/master@{#407448}

[modify] https://crrev.com/f540d6bc78f31f20b45efee05fd2797877ffa9ec/third_party/WebKit/LayoutTests/TestExpectations

Could be anything related to the data collected into ConsoleMessage I guess. In build 8511 (where the test times out, but passes in the re-run) I see this V8 commit that might be relevant: https://chromium.googlesource.com/v8/v8/+/3138862703079c60dcc2406dca1011fcacb4e264

Should probably just split this test a few times though...

FYI, svg/parser/whitespace-length-invalid-1.html now appears flaky.  It failed twice in the last 3 hours.
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20%28dbg%29/builds/8559
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20%28dbg%29/builds/8561

I wonder if disabling the "-2" test simply caused the flaky situation to "move" to the -1 test?

Removing from sheriff queue because the primary flake has been disabled.

Looking at

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=%0Asvg%2Fparser%2Fwhitespace-length-invalid-1.html

the "flake pattern" are essentially the same between -1 and -2 - it's just that -1 appears to have had more "luck" in passing in the re-run (light blue boxes) until recently.

Can you please disable the "-1" test then too?  thanks.

In CQ (https://codereview.chromium.org/2178993003)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7fae046c80ecd8ee9c2d6dbc48916a67991291d0

commit 7fae046c80ecd8ee9c2d6dbc48916a67991291d0
Author: fs <fs@opera.com>
Date: Mon Jul 25 21:23:51 2016

Disable svg/parser/whitespace-length-invalid-1.html

TBR=mpearson@chromium.org
BUG= 630967 

Review-Url: https://codereview.chromium.org/2178993003
Cr-Commit-Position: refs/heads/master@{#407580}

[modify] https://crrev.com/7fae046c80ecd8ee9c2d6dbc48916a67991291d0/third_party/WebKit/LayoutTests/TestExpectations

I just saw a flake for svg/parser/whitespace-angle.html on Linux.
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Linux%20%28dbg%29/builds/8568

https://storage.googleapis.com/chromium-layout-test-archives/WebKit_Linux__dbg_/8568/layout-test-results/results.html

According the dashboard, it looks pretty flaky, similar to the other tests.

I will disable it.

Still going through CQ: https://codereview.chromium.org/2183753002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/321563551f86614ba9ad38a39f0796e16d35cfdf

commit 321563551f86614ba9ad38a39f0796e16d35cfdf
Author: mpearson <mpearson@chromium.org>
Date: Tue Jul 26 06:36:41 2016

Disable webkit test svg/parser/whitespace-angle.html on Linux

NOTRY=1
TBR=fs@opera.com

BUG= 630967 

Review-Url: https://codereview.chromium.org/2183753002
Cr-Commit-Position: refs/heads/master@{#407725}

[modify] https://crrev.com/321563551f86614ba9ad38a39f0796e16d35cfdf/third_party/WebKit/LayoutTests/TestExpectations

In the interests of efficient checking, we should also consider converting all of these parser tests to unit tests.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf

commit 64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf
Author: schenney <schenney@chromium.org>
Date: Thu Oct 27 13:16:03 2016

Break svg/parser tests into pieces to avoid timeouts

Test svg/parser/whitespace-angle.html has been broken into 2
around valid values. Note this means we run one set of tests twice,
once in each piece for invalid.forEach(validunits.forEach(...

Tests svg/parser/whitespace-length-invalid-1.html and
svg/parser/whitespace-length-invalid-2.html have been re-arranged
into 4 pieces around the set of invalid values.

R=fs@opera.com
BUG= 630967 

Review-Url: https://codereview.chromium.org/2452153002
Cr-Commit-Position: refs/heads/master@{#428010}

[modify] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/TestExpectations
[rename] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-1-expected.txt
[copy] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-1.html
[copy] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-2-expected.txt
[rename] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-2.html
[modify] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-1-expected.txt
[modify] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-1.html
[modify] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-2-expected.txt
[modify] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-2.html
[add] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-3-expected.txt
[add] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-3.html
[add] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-4-expected.txt
[add] https://crrev.com/64a07f9de4134dc11c7b9ca2fb30b32cc9ef83cf/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-4.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8967dab9f17779773188ca81f8d8454866f061ea

commit 8967dab9f17779773188ca81f8d8454866f061ea
Author: schenney <schenney@chromium.org>
Date: Fri Oct 28 17:57:11 2016

Break svg/parser/whitespace tests apart some more.

Some tests are still timing out on debug. Break them down
some more in an attempt to get them passing. Next step will
be to mark slow.

TBR=xidachen@chromium.org
BUG= 630967 

Review-Url: https://codereview.chromium.org/2454413002
Cr-Commit-Position: refs/heads/master@{#428419}

[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/resources/whitespace-helper.js
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-1-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-1.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-2-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-2.html
[add] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-expected.txt
[add] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-integer-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-1-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-1.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-2-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-2.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-3-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-3.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-4-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-length-invalid-4.html
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-number-expected.txt
[modify] https://crrev.com/8967dab9f17779773188ca81f8d8454866f061ea/third_party/WebKit/LayoutTests/svg/parser/whitespace-number.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/265208a08d5dd941be3101733e0191a3e4a1575c

commit 265208a08d5dd941be3101733e0191a3e4a1575c
Author: xidachen <xidachen@chromium.org>
Date: Sat Oct 29 00:57:47 2016

Mark svg/parser/whitespace-angle-invalid.html timeout on Linux Debug

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precise%20%28dbg%29/builds/803

BUG= 630967 
TBR=schenney@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2460113002
Cr-Commit-Position: refs/heads/master@{#428571}

[modify] https://crrev.com/265208a08d5dd941be3101733e0191a3e4a1575c/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce

commit 44ad23258f7ec4d1f2ac086fad2fa2e680d761ce
Author: schenney <schenney@chromium.org>
Date: Tue Nov 01 21:12:43 2016

Break svg/parser/whitespace-angle-invliad into 2 parts to avoid timeouts

TBR=xidachen@chromium.org
BUG= 630967 

Review-Url: https://codereview.chromium.org/2464203002
Cr-Commit-Position: refs/heads/master@{#429110}

[modify] https://crrev.com/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce/third_party/WebKit/LayoutTests/TestExpectations
[add] https://crrev.com/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-1-expected.txt
[rename] https://crrev.com/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-1.html
[add] https://crrev.com/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-2-expected.txt
[copy] https://crrev.com/44ad23258f7ec4d1f2ac086fad2fa2e680d761ce/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-2.html
[delete] https://crrev.com/b5243ab8c1a95305aff233a6175aa3a1f94d092f/third_party/WebKit/LayoutTests/svg/parser/whitespace-angle-invalid-expected.txt