Date: Sat, 10 Dec 2011 01:59:28 +0100 From: Attilio Rao <attilio@freebsd.org> To: George Mitchell <george+freebsd@m5p.com> Cc: freebsd-stable@freebsd.org Subject: Re: SCHED_ULE should not be the default Message-ID: <CAJ-FndBhCJCD=i52Ky71XscX7a4t4f=mqwCOYZRf0DUAQeY17Q@mail.gmail.com> In-Reply-To: <4EE2AE64.9060802@m5p.com> References: <4EE1EAFE.3070408@m5p.com> <CAJ-FndDniGH8QoT=kUxOQ%2BzdVhWF0Z0NKLU0PGS-Gt=BK6noWw@mail.gmail.com> <4EE2AE64.9060802@m5p.com>
next in thread | previous in thread | raw e-mail | index | archive | help
2011/12/10 George Mitchell <george+freebsd@m5p.com>: > On 12/09/11 10:17, Attilio Rao wrote: >> >> [...] >> >> More precisely I'd be interested in KTR traces. >> To be even more precise: >> With a completely stable GENERIC configuration (or otherwise please >> post your kernel config) please add the following: >> options KTR >> options KTR_ENTRIES=3D262144 >> options KTR_COMPILE=3D(KTR_SCHED) >> options KTR_MASK=3D(KTR_SCHED) >> >> While you are in the middle of the slow-down (so once it is well >> established) please do: >> # sysclt debug.ktr.cpumask=3D"" > > > wonderland# sysctl debug.ktr.cpumask=3D"" > debug.ktr.cpumask: ffffffffffffffff > sysctl: debug.ktr.cpumask: Invalid argument > > >> >> In the end go with: >> # ktrdump -ctf> =C2=A0ktr-ule-problem.out > > > It's 44MB, so it's at http://www.m5p.com/~george/ktr-ule-problem.out What svn revision did you use for it? What is the CPUs frequencies of machines generating this? Attilio --=20 Peace can only be achieved by understanding - A. Einstein
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJ-FndBhCJCD=i52Ky71XscX7a4t4f=mqwCOYZRf0DUAQeY17Q>