Date: Wed, 22 Feb 2006 19:20:46 +0300 From: Andrey Chernov <ache@FreeBSD.ORG> To: John Baldwin <jhb@FreeBSD.ORG> Cc: current@FreeBSD.ORG, Kris Kennaway <kris@obsecurity.org> Subject: Re: [PATCH] possible fix for the runtime going backwards warnings Message-ID: <20060222162046.GA16663@nagual.pp.ru> In-Reply-To: <200602221101.41027.jhb@freebsd.org> References: <200602211047.06599.jhb@freebsd.org> <20060222023646.GA75290@xor.obsecurity.org> <200602221101.41027.jhb@freebsd.org>
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On Wed, Feb 22, 2006 at 11:01:39AM -0500, John Baldwin wrote: > Is it more or less than before the patch? Also, what happens if you just back Less than (for me). > The pagezero ones are truly odd. calcru() shouldn't be called for kthreads > very often (if at all). I wonder if your tickrate is changing out from under > you. Try editing sys/i386/i386/tsc.c and where it does 'set_cputicker(rdtsc, > tsc_freq, 1)' change the last parameter to '0' and see if they go away. May it interfere with ntpd activity? I have those log lines in one chunk: Feb 22 03:36:43 pobrecita ntpd[422]: time reset +0.622691 s Feb 22 03:36:43 pobrecita ntpd[422]: kernel time sync disabled 2041 Feb 22 03:37:45 pobrecita kernel: calcru: runtime went backwards from 292542 usec to 292537 usec for pid 29 (pagezero) Feb 22 03:37:45 pobrecita kernel: u 0:0/0 s 38:292542/292537 i 0:0/0 -- http://ache.pp.ru/
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