Speculatively serialize trace_test on Win NVIDIA GTX 1660

Parallelization suspect for flaky machine hangs on this platform.

Bug: 406454932
Change-Id: I36582f2fed1ec958fff179d0b39b50c63831387f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6397476
Auto-Submit: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1438367}

infra/config/generated/builders/ci/GPU FYI Win Builder/targets/chromium.gpu.fyi.json

@@ -651,7 +651,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/GPU FYI Win x64 Builder (dbg)/targets/chromium.gpu.fyi.json

@@ -432,7 +432,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/GPU FYI Win x64 Builder/targets/chromium.gpu.fyi.json

@@ -2764,7 +2764,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/GPU Win x64 Builder (dbg)/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/GPU Win x64 Builder/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/Win10 FYI x64 Debug (NVIDIA)/targets/chromium.gpu.fyi.json

@@ -431,7 +431,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/Win10 FYI x64 Release (NVIDIA)/targets/chromium.gpu.fyi.json

@@ -650,7 +650,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/Win10 FYI x86 Release (NVIDIA)/targets/chromium.gpu.fyi.json

@@ -650,7 +650,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/Win10 x64 Debug (NVIDIA)/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/ci/Win10 x64 Release (NVIDIA)/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/try/gpu-fyi-try-win10-nvidia-dbg-64/targets/chromium.gpu.fyi.json

@@ -432,7 +432,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/try/gpu-fyi-try-win10-nvidia-rel-32/targets/chromium.gpu.fyi.json

@@ -651,7 +651,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/try/gpu-fyi-try-win10-nvidia-rel-64/targets/chromium.gpu.fyi.json

@@ -651,7 +651,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/try/gpu-try-win-nvidia-dbg/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/generated/builders/try/win-rel/targets/chromium.gpu.json

@@ -425,7 +425,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"

infra/config/lib/targets-internal/magic_args.star

@@ -272,6 +272,14 @@ def _gpu_parallel_jobs(builder_name, settings, spec_value):
             if gpu.startswith("10de"):
                 return ["--jobs=1"]
 
+    # trace_test flakily hangs Win NVIDIA GTX 1660 machines crbug.com/406454932.
+    # Speculatively disable parallelism to check if it is related.
+    is_trace_test = test_name == "trace_test" or suite == "trace_test"
+    if settings.os_type == common.os_type.WINDOWS and is_trace_test:
+        for gpu in _get_gpus(spec_value):
+            if gpu.startswith("10de:2184"):
+                return ["--jobs=1"]
+
     if settings.os_type in (
         common.os_type.LACROS,
         common.os_type.LINUX,

testing/buildbot/buildbot_json_magic_substitutions.py

@@ -312,6 +312,15 @@ def GPUParallelJobs(test_config, tester_name, tester_config):
       if gpu.startswith('10de'):
         return ['--jobs=1']
 
+  # trace_test flakily hangs Win NVIDIA GTX 1660 machines crbug.com/406454932.
+  # Speculatively disable parallelism to check if it is related.
+  is_trace_test = (test_name == 'trace_test'
+                   or test_config.get('telemetry_test_name') == 'trace_test')
+  if os_type == 'win' and is_trace_test:
+    for gpu in _GetGpusFromTestConfig(test_config):
+      if gpu.startswith('10de:2184'):
+        return ['--jobs=1']
+
   if os_type in ['lacros', 'linux', 'mac', 'win']:
     return ['--jobs=4']
   return ['--jobs=1']

testing/buildbot/client.v8.fyi.json

@@ -2929,7 +2929,7 @@
           "--stable-jobs",
           "--extra-browser-args=--enable-logging=stderr --js-flags=--expose-gc",
           "--enforce-browser-version",
-          "--jobs=4"
+          "--jobs=1"
         ],
         "merge": {
           "script": "//testing/merge_scripts/standard_isolated_script_merge.py"