On Sun, October 11, 2009 6:20 pm, Attilio Rao wrote: > 2009/10/12 Larry Rosenman <ler_at_lerctr.org>: >> >> On Sun, October 11, 2009 6:11 pm, Attilio Rao wrote: >>> 2009/10/12 Larry Rosenman <ler_at_lerctr.org>: >>>> >>>> Ok, running RELENG_8 from Friday (10/9/2009). >>>> >>>> If I have 4 Folding-at-home processes running (they nice themselves) >>>> the >>>> system is slow as a dog. >>>> >>>> If I stop them, it's speedy. >>>> >>>> This is running SCHED_ULE >>>> >>>> is this expected? >>>> >>>> What can I do to help? >>> >>> Can you please produce the schedgraph output for this workload? >>> Do you know how to setup it? >> >> I'm not familiar with this. What do I need to do? > > - Recompile your kernel with the following options: > KTR > KTR_COMPILE=(KTR_SCHED) > KTR_MASK=(KTR_SCHED) > KTR_ENTRIES=262144 > > - Run the buggy workload > - When the slowness has been experienced a bit (a reasonable timeframe > is within 10/20 secs) do: sysctl debug.ktr.mask=0 > - do: ktrdump -ct > ktr.out > - send here this file along with the number and frequency of your CPUs Sent under separate cover direct to Attilio. Thanks, Attilio! > > Thanks, > Attilio > > > -- > Peace can only be achieved by understanding - A. Einstein > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" > -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 512-248-2683 E-Mail: ler_at_lerctr.org US Mail: 430 Valona Loop, Round Rock, TX 78681-3893Received on Sun Oct 11 2009 - 23:43:30 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:56 UTC