Date: Fri, 3 Nov 2006 20:26:24 -0500 From: Kris Kennaway <kris@obsecurity.org> To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de> Cc: freebsd-stable@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: FreeBSD 6.2-PRE: Jumping box. Worse performance Message-ID: <20061104012624.GB39681@xor.obsecurity.org> In-Reply-To: <454BE7F0.80600@mail.zedat.fu-berlin.de> References: <454B9F21.4090705@mail.zedat.fu-berlin.de> <20061103212715.GB36049@xor.obsecurity.org> <454BE7F0.80600@mail.zedat.fu-berlin.de>
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--yEPQxsgoJgBvi8ip Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Nov 04, 2006 at 02:08:00AM +0100, O. Hartmann wrote: > Kris Kennaway wrote: > > On Fri, Nov 03, 2006 at 08:57:21PM +0100, O. Hartmann wrote: > > =20 > >> Compiling FreeBSD's world with make -j2 was never a problem while play= ing sound or doing other work on screen - but this seems to be a big proble= m now, even when SCHED_4BSD is used! > >> > >> While compiling world mouse stops and jumps, sound gets distorted. I r= ecognise thsi behaviour also when box is doing minor HD access: mouse point= er stops, keyboard input gets stuck, sound stops playing, window operations= (opening/closing) seems to freeze. This got even worse whithin the last tw= o weeks (date when it starts getting this worse unknown). > >> This phenomenon occurs on both i386 and amd64 but is much worse on amd= 64. On AMD64 very short and small HD activities seems to trigger this 'jump= ing' and stopping. > >> > >> Both boxes are singel core CPUs, AMD64 is a Athlon 3500+, i386 is a HT= T enabled P4 at 3.0 GHz. > >> > >> I do not get any error or system fault, simply this jumping and freezi= ng. > >> > >> On both systems PREEMPTION is enabled in the kernel, but the problem a= lso occurs without this option. > >> > >> Any ideas, suggestion, maybe explanations? > >> =20 > > > > Check for interrupt storms (vmstat -i). > > > > Kris > > =20 > Already already checked, nothing suspicious ... Use top -S to check what is using the CPU. Kris --yEPQxsgoJgBvi8ip Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFS+xAWry0BWjoQKURAgWDAKDFvvXqvgOP3s66rW6YBEb5ThKO8wCfZGBR yRrIqXVjdES8htTEDYiRZSU= =1x6r -----END PGP SIGNATURE----- --yEPQxsgoJgBvi8ip--
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