Date: Sat, 04 Nov 2006 02:08:00 +0100 From: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 6.2-PRE: Jumping box. Worse performance Message-ID: <454BE7F0.80600@mail.zedat.fu-berlin.de> In-Reply-To: <20061103212715.GB36049@xor.obsecurity.org> References: <454B9F21.4090705@mail.zedat.fu-berlin.de> <20061103212715.GB36049@xor.obsecurity.org>
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Kris Kennaway wrote: > On Fri, Nov 03, 2006 at 08:57:21PM +0100, O. Hartmann wrote: > >> Compiling FreeBSD's world with make -j2 was never a problem while playing sound or doing other work on screen - but this seems to be a big problem now, even when SCHED_4BSD is used! >> >> While compiling world mouse stops and jumps, sound gets distorted. I recognise thsi behaviour also when box is doing minor HD access: mouse pointer stops, keyboard input gets stuck, sound stops playing, window operations (opening/closing) seems to freeze. This got even worse whithin the last two weeks (date when it starts getting this worse unknown). >> This phenomenon occurs on both i386 and amd64 but is much worse on amd64. On AMD64 very short and small HD activities seems to trigger this 'jumping' and stopping. >> >> Both boxes are singel core CPUs, AMD64 is a Athlon 3500+, i386 is a HTT enabled P4 at 3.0 GHz. >> >> I do not get any error or system fault, simply this jumping and freezing. >> >> On both systems PREEMPTION is enabled in the kernel, but the problem also occurs without this option. >> >> Any ideas, suggestion, maybe explanations? >> > > Check for interrupt storms (vmstat -i). > > Kris > Already already checked, nothing suspicious ... Oliver
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