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scheduler: Log process info when its affinity cannot be changed

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Include its current affinity, cmdline, and cgroup. This may help
identify issues with tuning, e.g., in cases when the process
disappears soon after affining it fails.

Resolves: RHEL-69933
This commit is contained in:
Pavol Žáčik 2024-12-06 10:36:34 +01:00
parent 90c24eea03
commit 55e272e263
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GPG key ID: B99527D5E6487A92
1 changed files with 3 additions and 0 deletions
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3
tuned/plugins/plugin_scheduler.py
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@ -661,6 +661,9 @@ class SchedulerPlugin(base.Plugin):
log.warning("Affinity of task with PID %d cannot be changed, the task's affinity mask is fixed."
% pid)
return True
log.info("Task %d cmdline: %s" % (pid, self._get_cmdline(process)))
log.info("Task %d cgroup: %s" % (pid, self._get_stat_cgroup(process)))
log.info("Task %d affinity: %s" % (pid, list(self._scheduler_utils.get_affinity(pid))))
except (OSError, IOError) as e:
if e.errno == errno.ENOENT or e.errno == errno.ESRCH:
log.debug("Failed to get task info for PID %d, the task vanished."