All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=712261

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyhwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IllDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL3R1bGlwMi53ZWJtX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyjgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImBDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL2Nyb3dkLm9nZ19ncHUMCxINU3RvcHBhZ2VBbGVydBjdpxwM,agxzfmNocm9tZXBlcmZykgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImRDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL2Nyb3dkMTA4MC5tcDRfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyhgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlhDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL3R1bGlwMi53YXZfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyhgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlhDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL3R1bGlwMi5vZ3ZfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyjwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImFDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL3R1bGlwMi5vZ2dfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyjwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImFDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL3R1bGlwMi5tcDNfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyjwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImFDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL3R1bGlwMi53YXZfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyhQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IldDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL2Nyb3dkLm9nZ19ncHUMCxINU3RvcHBhZ2VBbGVydBjdpxwM,agxzfmNocm9tZXBlcmZyjwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImFDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL3R1bGlwMi5vZ3ZfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZykAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImJDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9yZXNpZGVudF9zZXRfc2l6ZV9kZWx0YV9zaXplL3R1bGlwMi53ZWJtX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyigELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlxDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL2Nyb3dkMTA4MC53ZWJtX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyiQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IltDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL2Nyb3dkMjE2MC5vZ3ZfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyiQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IltDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL2Nyb3dkMTA4MC5tcDRfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyhgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlhDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL3R1bGlwMi5tcDNfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyhgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlhDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL3R1bGlwMi5vZ2dfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyigELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlxDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy92bV9wcml2YXRlX2RpcnR5X2RlbHRhL2Nyb3dkMjE2MC53ZWJtX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyfwsSE1N0b3BwYWdlQWxlcnRQYXJlbnQiUUNocm9taXVtUGVyZi9saW51eC1yZWxlYXNlL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2NwdV91dGlsaXphdGlvbi90dWxpcDIub2dnX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyfwsSE1N0b3BwYWdlQWxlcnRQYXJlbnQiUUNocm9taXVtUGVyZi9saW51eC1yZWxlYXNlL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2NwdV91dGlsaXphdGlvbi90dWxpcDIub2d2X2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyfgsSE1N0b3BwYWdlQWxlcnRQYXJlbnQiUENocm9taXVtUGVyZi9saW51eC1yZWxlYXNlL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2NwdV91dGlsaXphdGlvbi9jcm93ZC5vZ2dfZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZygAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlJDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9jcHVfdXRpbGl6YXRpb24vdHVsaXAyLndlYm1fZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyfwsSE1N0b3BwYWdlQWxlcnRQYXJlbnQiUUNocm9taXVtUGVyZi9saW51eC1yZWxlYXNlL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2NwdV91dGlsaXphdGlvbi90dWxpcDIud2F2X2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw,agxzfmNocm9tZXBlcmZyggELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlRDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9jcHVfdXRpbGl6YXRpb24vY3Jvd2QxMDgwLm1wNF9ncHUMCxINU3RvcHBhZ2VBbGVydBjdpxwM,agxzfmNocm9tZXBlcmZygwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlVDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9jcHVfdXRpbGl6YXRpb24vY3Jvd2QxMDgwLndlYm1fZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZygwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlVDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9jcHVfdXRpbGl6YXRpb24vY3Jvd2QyMTYwLndlYm1fZ3B1DAsSDVN0b3BwYWdlQWxlcnQY3accDA,agxzfmNocm9tZXBlcmZyggELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IlRDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9jcHVfdXRpbGl6YXRpb24vY3Jvd2QyMTYwLm9ndl9ncHUMCxINU3RvcHBhZ2VBbGVydBjdpxwM,agxzfmNocm9tZXBlcmZyfwsSE1N0b3BwYWdlQWxlcnRQYXJlbnQiUUNocm9taXVtUGVyZi9saW51eC1yZWxlYXNlL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2NwdV91dGlsaXphdGlvbi90dWxpcDIubXAzX2dwdQwLEg1TdG9wcGFnZUFsZXJ0GN2nHAw


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

linux-release

Потеря зg соединения 2sim на устройстве

Bisect job https://chromeperf.appspot.com/buildbucket_job_status/8981762985992661392 indicated http://crrev/463872 as the likely cause of this.

capn: It appears that after your commit http://crrev/463872, the perf lab is no longer getting results from GPU processes while running the media benchmarks on Linux. Apparently the Chrome GPU processes are no longer started during these benchmarks. Could you please confirm if this is expected? Thanks.

 Issue 713863  has been merged into this issue.

 Issue 713865  has been merged into this issue.

My CL causes us to use SwiftShader for WebGL support on the CPU, when the GPU is blacklisted. It makes the GPU inaccessible for anything else, and the GPU process is only started when running WebGL content.

So iff these perf lab systems are using outdated hardware, then this is expected.

Simon: We have stopped receiving media benchmark measurements from GPU processes on linux-release bots, and this indicates that the lab might be using a GPU that is outdated and blacklisted. Is there any way for you to check the hardware in the lab to confirm if it is the case? I'm still getting GPU process measurements when I run the benchmarks on my local machine, so this does appear to be a machine-specific issue. Thanks.

+nednguyen for hardware setup question

I took a quick peek at the output from the swarming task on the waterfall and it appears to be using SwiftShader as capn@ mentioned (https://chromium-swarm.appspot.com/task?id=35bdcf0452469e10&refresh=10&show_raw=1). Not sure where to get the machine specs (the swarming page lists the gpu as a Matrox G200eR2), but Ned might know.

The Matrox G200 is an ancient GPU, which nowadays is used as an embedded GPU on many server motherboards (hence the eR2 suffix - embedded Revision 2).

It's definitely a blacklisted GPU, so the fallback to SwiftShader is expected.