Re: [PATCH v1] cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints

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On 06/05/2024 18.22, Shakeel Butt wrote:
Anyways did the mutex change helped your production workload regarding
latencies?

Yes, see attached NET_RX softirq latency improvement with mutex patch[1].
Showing two grafana heatmaps over softirq wait (no-able-to run) time.
It is very clear that most of the latency spikes are gone with mutex patch applied.

--Jesper

[1] https://lore.kernel.org/all/171328989335.3930751.3091577850420501533.stgit@firesoul/

Attachment: softirq_wait_time_compare01.png
Description: PNG image


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