Date: Fri, 3 Nov 2006 16:27:15 -0500 From: Kris Kennaway <kris@obsecurity.org> To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 6.2-PRE: Jumping box. Worse performance Message-ID: <20061103212715.GB36049@xor.obsecurity.org> In-Reply-To: <454B9F21.4090705@mail.zedat.fu-berlin.de> References: <454B9F21.4090705@mail.zedat.fu-berlin.de>
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[-- Attachment #1 --] 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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFS7QzWry0BWjoQKURAqfyAJ4svDWBE46Cqw22fnb6bONQx4aQuQCePUm7 GSAd3BuV4JVOsElBkcLznps= =TSvm -----END PGP SIGNATURE-----
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