Re: [REGRESSION] 5-10% increase in IO latencies with nohz balance patch
From: Josef Bacik <josef@toxicpanda.com>
Date: 2021-11-29 22:40:44
Also in:
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From: Josef Bacik <josef@toxicpanda.com>
Date: 2021-11-29 22:40:44
Also in:
lkml
On Mon, Nov 29, 2021 at 06:31:17PM +0000, Valentin Schneider wrote:
On 29/11/21 13:15, Josef Bacik wrote:quoted
On Mon, Nov 29, 2021 at 06:03:24PM +0000, Valentin Schneider wrote:quoted
Would you happen to have execution traces by any chance? If not I should be able to get one out of that fsperf thingie.I don't, if you want to tell me how I can do it right now. I've disabled everything on this box for now so it's literally just sitting there waiting to have things done to it. Thanks,I see you have Ftrace enabled in your config, so that ought to do it: trace-cmd record -e 'sched:*' -e 'cpu_idle' $your_test_cmd
http://toxicpanda.com/performance/trace.dat it's like 16mib. Enjoy, Josef