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| author | Judy Hsiao <judyhsiao@chromium.org> | 2023-12-06 06:38:33 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-08 13:37:43 +0300 |
| commit | e5dc5afff62f3e97e86c3643ec9fcad23de4f2d3 (patch) | |
| tree | e4c14162082802b8f862a108210a038b3aa69b99 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 179a8b515e4b8971ae4ad2db36a44f0691fc6756 (diff) | |
| download | linux-e5dc5afff62f3e97e86c3643ec9fcad23de4f2d3.tar.xz | |
neighbour: Don't let neigh_forced_gc() disable preemption for long
We are seeing cases where neigh_cleanup_and_release() is called by
neigh_forced_gc() many times in a row with preemption turned off.
When running on a low powered CPU at a low CPU frequency, this has
been measured to keep preemption off for ~10 ms. That's not great on a
system with HZ=1000 which expects tasks to be able to schedule in
with ~1ms latency.
Suggested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Judy Hsiao <judyhsiao@chromium.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions