[dm-devel] [RFC PATCH] dm: fix excessive dm-mq context switching
Sagi Grimberg
sagig at dev.mellanox.co.il
Sun Feb 7 16:43:48 UTC 2016
> Hello Sagi,
Hey Bart,
> Did you run your test on a NUMA system ?
I did.
> If so, can you check with e.g.
> perf record -ags -e LLC-load-misses sleep 10 && perf report whether this
> workload triggers perhaps lock contention ? What you need to look for in
> the perf output is whether any functions occupy more than 10% CPU time.
I will, thanks for the tip!
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