1415245 - Report system and process info at start of test run

Status: RESOLVED FIXED

(Testing :: General, enhancement)

Description

[Geoff Brown [:gbrown]]

See https://bugzilla.mozilla.org/show_bug.cgi?id=1397201#c88. It would be useful for debugging some test failures to have some idea of OS state -- when was it last rebooted, what processes are running, what network connections are active, etc. Let's use psutil to report a bunch of that, perhaps into a separate artifact.

Comment 1

[Joel Maher ( :jmaher ) (UTC -8)]

great idea!

Comment 2

[Henrik Skupin [:whimboo][⌚️UTC+1]]

Please note that for bug 1397201 we seem to collect orphaned Firefox processes while mochitests are running. Not sure how mochitests are working, but they start Firefox a couple of times. So ideally for each start of Firefox such an output would be good to have.

Or we ensure that all known firefox processes are getting killed.

Comment 3

[Joel Maher ( :jmaher ) (UTC -8)]

we restart firefox for every manifest we run (which is per directory).  so the harness should be able to print this out before launching the browser.

Comment 4

[Geoff Brown [:gbrown]]

Attachment: create system-info.log artifact for desktop unit tests

In https://treeherder.mozilla.org/#/jobs?repo=try&revision=f777ab96933582c58b8d37adb820dd291ddc6661, you can see the system-info.log artifact. This will be created for desktop unit tests -- everything run from desktop_unittest.py. I already have something similar in place for Android.

This only addresses the issue of what state things are in when mozharness started running tests. I will follow-up in other bugs to check on whether firefox is dead after running tests and whether firefox is already alive at the start of tests.

Comment 5

[Joel Maher ( :jmaher ) (UTC -8)]

Comment on attachment 8926167 [details] [diff] [review]
create system-info.log artifact for desktop unit tests

Review of attachment 8926167 [details] [diff] [review]:
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thanks!

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/de981f056984
Create system-info.log artifact for desktop unit tests; r=jmaher

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/24468798c7a6
Follow-up: work around intermittent psutil import error, on a CLOSED TREE

Comment 8

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/mozilla-central/rev/e2f87726b608
Follow-up: work around intermittent psutil import error, on a CLOSED TREE

Comment 9

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/e2f87726b608

Comment 10

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/24468798c7a6

Comment 11

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/de981f056984