Indeed! Already tested 2.10.4 with a fixed issue > On May 31, 2018, at 09:15, Hans Henrik Happe <[email protected]> wrote: > > Happy to report that 2.10.4 fixed this issue. > > Cheers, > Hans Henrik > > On 06-04-2018 14:48, Hans Henrik Happe wrote: >> Just for the record. 2.11.0 has fixed this. Not sure which LU though. >> >> Cheers, >> Hans Henrik >> >> On 30-09-2017 23:43, Hans Henrik Happe wrote: >>> On 27-09-2017 18:50, Dilger, Andreas wrote: >>>> On Sep 26, 2017, at 01:10, Hans Henrik Happe<[email protected]> wrote: >>>>> Hi, >>>>> >>>>> Did anyone else experience CPU load from ksoftirqd after 'modprobe >>>>> lustre'? On an otherwise idle node I see: >>>>> >>>>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >>>>> 9 root 20 0 0 0 0 S 28.5 0.0 2:05.58 ksoftirqd/1 >>>>> >>>>> >>>>> 57 root 20 0 0 0 0 R 23.9 0.0 2:22.91 >>>>> ksoftirqd/13 >>>>> >>>>> The sum of those two is about 50% CPU. >>>>> >>>>> I have narrowed it down to the ptlrpc module. When I remove that, it >>>>> stops. >>>>> >>>>> I also tested the 2.10.1-RC1, which is the same. >>>> If you can run "echo l > /proc/sysrq-trigger" it will report the >>>> processes >>>> that are currently running on the CPUs of your system to the console >>>> (and >>>> also /var/log/messages, if it can write everything in time). >>>> >>>> You might need to do this several times to get a representative >>>> sample of >>>> the ksoftirqd process stacks to see what they are doing that is >>>> consuming >>>> so much CPU. >>>> >>>> Alternately, "echo t > /proc/sysrq-trigger" will report the stacks of >>>> all >>>> processes to the console (and /v/l/m), but there will be a lot of them, >>>> and no better chance that it catches what ksoftirqd is doing 25% of >>>> the time. >>> I've attached the stacks. Some wakeup which I guess are initiated by >>> something in the ptlrpc code. >>> >>> Cheers, >>> Hans Henrik >>> >>> >>> >>> >>> _______________________________________________ >>> lustre-discuss mailing list >>> [email protected] >>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org >>> >> _______________________________________________ >> lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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