multiple-pipeline: replace pidof->ps to catch uninterruptible sleep #538
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Break the strange dependency between how many processes to start and how many were found in the previous run. Also move it next to func_run_pipeline_with_type() to make it clearer it's actually a parameter of that function. Signed-off-by: Marc Herbert <marc.herbert@intel.com>
pidof ignores processes in uninterruptable sleep by default, probably because sending them signals is futile. pidof has a -z option but it's just simpler to use "ps". Also de-duplicate code into new ps_checks() function Fixes: thesofproject#472 Any aplay or arecord process can be in uninterruptable sleep when doing I/O but the easiest way to reproduce is to wait a few seconds and let the DSP go to sleep. Signed-off-by: Marc Herbert <marc.herbert@intel.com>
This was referenced Dec 1, 2020
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The only way to make sure races are fixed is to make them worse. This is what TEST #537 did. |
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Note @keqiaozhang moved uninterruptible sleep to the "normal" state category in commit 180b5d7 |
xiulipan
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Dec 2, 2020
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Nice catch, I think we already find the process status issue in
sof-test/tools/sof-process-state.sh
Lines 40 to 41 in 686d273
But the difference of
pidof and ps is really difficult to debug.
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This is really good catch and fix! Thanks Marc! |
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Follow-up commit #543 should save about 20 minutes in nightly tests. |
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pidof ignores processes in uninterruptable sleep by default, probably
because sending them signals is futile. pidof has a -z option but it's
just simpler to use "ps".
Also de-duplicate code into new ps_checks() function
Fixes: #472
Any aplay or arecord process can be in uninterruptable sleep when doing
I/O but the easiest way to reproduce is to wait a few seconds and let the
DSP go to sleep.