Auto-reboot the chromium.gpu and chromium.gpu.fyi bots.

masters/master.chromium.gpu.fyi/slaves.cfg

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 slaves = [
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm80-m1',
     'builder': 'GPU Win Builder',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.

[Dirk Pranke, 2016/04/08 00:39:52]

This comment isn't correct, right, since some of the bots are still not
configured to auto-reboot?

[Ken Russell (switch to Gerrit), 2016/04/08 00:48:38]

You're right, I was lazy and didn't go back and fix it after discovering the
four bots which can't auto-reboot. Fixed.

   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm81-m1',
     'builder': 'GPU Win Builder (dbg)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm82-m1',
     'builder': 'Win7 Release (NVIDIA)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm83-m1',
     'builder': 'Win7 Debug (NVIDIA)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm84-m1',
     'builder': 'Win8 Release (NVIDIA)',
     'os': 'win',
     'version': 'win8',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm85-m1',
     'builder': 'Win8 Debug (NVIDIA)',
     'os': 'win',
     'version': 'win8',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm86-m1',
     'builder': 'Win7 Release (ATI)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm102-m1',
     'builder': 'Win7 Debug (ATI)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build169-m1',
     'builder': 'Win7 Release (Intel)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build71-b1',
     'builder': 'Win7 Release (NVIDIA GeForce 730)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build74-b1',
     'builder': 'Win7 Release (New Intel)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build75-b1',
     'builder': 'Win7 Debug (New Intel)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm103-m1',
     'builder': 'GPU Win x64 Builder',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm104-m1',
     'builder': 'GPU Win x64 Builder (dbg)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm105-m1',
     'builder': 'Win7 x64 Release (NVIDIA)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm106-m1',
     'builder': 'Win7 x64 Debug (NVIDIA)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm87-m1',
     'builder': 'GPU Win Clang Builder (dbg)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm696-m1',
     'builder': 'GPU Mac Builder',
     'os': 'mac',
     'version': '10.8',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm697-m1',
     'builder': 'GPU Mac Builder (dbg)',
     'os': 'mac',
     'version': '10.8',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm71-m1',
     'builder': 'Mac 10.10 Release (Intel)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm72-m1',
     'builder': 'Mac 10.10 Debug (Intel)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build116-m1',
     'builder': 'Mac 10.10 Release (ATI)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build117-m1',
     'builder': 'Mac 10.10 Debug (ATI)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build110-m1',
     'builder': 'Mac Retina Release',
     'os': 'mac',
     'version': '10.9',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build181-m1',
     'builder': 'Mac Retina Debug',
     'os': 'mac',
     'version': '10.9',
     'recipe': 'chromium',
     'build_config': 'Debug',
     'bits': '64',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm73-m1',
     'builder': 'Mac 10.10 Retina Release (AMD)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'vm74-m1',
     'builder': 'Mac 10.10 Retina Debug (AMD)',
     'os': 'mac',
     'version': '10.10',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'slave60-c1',
     'builder': 'GPU Linux Builder',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'slave61-c1',
     'builder': 'GPU Linux Builder (dbg)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
-    # This bot only does builds and it seems sub-optimal to reboot in between.
-    'auto_reboot': False,
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'slave64-c1',
     'subdir': '0',
     'builder': 'Linux Release (NVIDIA)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
+    # This physical host is shared between multiple builders and can't
+    # be auto-rebooted.
     'auto_reboot': False,
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build171-m1',
     'builder': 'Linux Release (Intel Graphics Stack)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build89-m1',
     'builder': 'Linux Release (ATI)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build70-b1',
     'builder': 'Linux Release (NVIDIA GeForce 730)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'slave64-c1',
     'subdir': '1',
     'builder': 'Linux Debug (NVIDIA)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot only triggers and collects Swarming results and doesn't
-    # need to be auto-rebooted.
+    # This physical host is shared between multiple builders and can't
+    # be auto-rebooted.
     'auto_reboot': False,
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build72-b1',
     'builder': 'Linux Release (New Intel)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Release',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'build73-b1',
     'builder': 'Linux Debug (New Intel)',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
     'recipe': 'chromium',
     'build_config': 'Debug',
     # This bot uses recipe-side triggers.
     'triggered_by': 'none',
-    # This bot is a physical machine running tests locally and needs
-    # to be auto-rebooted for stability.
+    # All bots on these waterfalls are auto-rebooted between runs for stability.
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'chromeperf21',
     'builder': 'Win7 Audio',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   },
   {
     'master': 'ChromiumGPUFYI',
     'hostname': 'chromeperf22',
     'builder': 'Linux Audio',
     'os': 'linux',
     'version': 'precise',
     'bits': '64',
   },
 ]