diff options
| author |   Juri Lelli <juri.lelli@redhat.com> | 2023-05-08 09:58:52 +0200 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2023-05-08 13:22:33 -1000 |
| commit | c0f78fd5edcf29b2822ac165f9248a6c165e8554 (patch) | |
| tree | d762a1991f8ea08d021c703d0642830988077fff /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets (diff) | |
| download | wireguard-linux-c0f78fd5edcf29b2822ac165f9248a6c165e8554.tar.xz wireguard-linux-c0f78fd5edcf29b2822ac165f9248a6c165e8554.zip | |
cgroup/cpuset: Iterate only if DEADLINE tasks are present
update_tasks_root_domain currently iterates over all tasks even if no
DEADLINE task is present on the cpuset/root domain for which bandwidth
accounting is being rebuilt. This has been reported to introduce 10+ ms
delays on suspend-resume operations.
Skip the costly iteration for cpusets that don't contain DEADLINE tasks.
Reported-by: Qais Yousef <qyousef@layalina.io>
Link: https://lore.kernel.org/lkml/20230206221428.2125324-1-qyousef@layalina.io/
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions