Linux perf tests are not running for `node-test-commit-v8-linux`

[mmarchini]

Related to #1274. Turns out Linux perf is not installed on machines it should be to run Linux perf tests. I'm not sure for how long, but I'm guessing it has been for a few months, since recent versions of V8 have introduced some changes which would make the test fail (which are fixed by nodejs/node#27265).

Today the Linux perf test is very lenient: if it doesn't find the perf binary or if there's any issue while running perf, the test will skip. Can we somehow force it to fail only on the jobs it's supposed to run (node-test-commit-v8-linux)?

[joyeecheung]

I think we could use an environment variable to force the test?

[refack]

Since it's run only as part of https://ci.nodejs.org/job/node-test-commit-v8-linux/nodes=benchmark,v8test=v8test/ I'd think it can always fail.

[refack]

Meanwhile I changed the condition so that the v8-update suite will run on benchmark-ubuntu1604-intel-64 as well.

Refs: #1381

[refack]

I had to tweak the conditional a few more times:
https://ci.nodejs.org/job/node-test-commit-v8-linux/2242/ ⚠️

14:43:47 + perf --version
14:43:47 /tmp/jenkins1214291362641239044.sh: 104: /tmp/jenkins1214291362641239044.sh: perf: not found
14:43:47 + exit 54

[refack]

This is interesting:

14:39:31 + NODE_TEST_DIR=/home/iojs/node-tmp NODE_COMMON_PORT=15000 python tools/test.py -j 88 -p tap --mode=release --flaky-tests=run v8-updates
14:39:31 TAP version 13
14:39:31 1..2
14:39:32 ok 1 v8-updates/test-linux-perf # skip Failed to execute perf: 
14:39:32   ---
14:39:32   duration_ms: 0.915
14:39:32   ...
14:39:32 ok 2 v8-updates/test-postmortem-metadata
14:39:32   ---
14:39:32   duration_ms: 0.916
14:39:32   ...
14:39:32 + perf --version
14:39:32 perf version 4.17.g7d3bf

[mmarchini]

@refack thank you for looking into it. I'm getting this failure on my machine as well, I think this might be caused by nodejs/node#27346. I'll fix the test once the flag is fixed.

Since it's run only as part of ci.nodejs.org/job/node-test-commit-v8-linux/nodes=benchmark,v8test=v8test I'd think it can always fail.

I'm not sure I understood what you mean by "it can always fail".

I think we could use an environment variable to force the test?

Sounds like a good idea.

[refack]

Since it's run only as part of ci.nodejs.org/job/node-test-commit-v8-linux/nodes=benchmark,v8test=v8test I'd think it can always fail.

I'm not sure I understood what you mean by "it can always fail".

I mean fail the test if perf isn't installed and if the call fails, i.e. remove all the defenses in https://github.com/nodejs/node/blob/49d3d11ba7975b2c6df4ecab55b4619da46fcb95/test/v8-updates/test-linux-perf.js#L51-L65

I mean this test (as part of the v8-update suite) is only triggered when explicitly called, so I'd assume the user will more likely want to know if it actually passed, then skipped.

[mmarchini]

I mean this test (as part of the v8-update suite) is only triggered when explicitly called, so I'd assume the user will more likely want to know if it actually passed, then skipped.

Agreed. We should still skip this test if not running on Linux, but it should fail if it can't run on Linux because of missing perf. Since v8-updates only runs on node-test-commit-v8-linux I guess this is fine.

On a side note: can I be included in the e-mail notifications for https://ci.nodejs.org/view/Node.js%20Daily/job/node-update-v8-canary? I don't have permissions to add myself there.

[targos]

@mmarchini I added your address to the list for e-mail notifications