Date: Wed, 10 Nov 2004 16:36:42 -0500 From: Joe Marcus Clarke <marcus@FreeBSD.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: 6-CURRENT unbelievably slow? Message-ID: <1100122602.36242.25.camel@shumai.marcuscom.com> In-Reply-To: <Pine.NEB.3.96L.1041110212739.85487A-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1041110212739.85487A-100000@fledge.watson.org>
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--=-aDueMSkkOG5wXnKLei/F Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2004-11-10 at 21:28 +0000, Robert Watson wrote: > On Wed, 10 Nov 2004, Joe Marcus Clarke wrote: >=20 > > [NON-Text Body part not included] >=20 > If you diff the dmesg "before" and "after", are there any signs of > substantial interrupt or device configuration changes? Paying particular > attention, perhaps, to assignment of interrupt numbers, etc. Do settings > like ACPI make a difference? I was just going to send this: Sorry to follow up to myself, but I found another piece of information. Even when the system is completely idle, top reports this: CPU states: 0.0% user, 0.0% nice, 1.6% system, 85.2% interrupt, 13.2% idle My interrupt usage never drops below 80%. systat reports that all of this (161756 interrupts per second) is taken up by ata0 on IRQ 14. I don't have any harddrives attached to the internal ATA controller, and disabling this in the BIOS has no effect. I noticed the interrupt storm detection line in dmesg. In previous builds, this worked, but it doesn't seem to be taking effect anymore. NOTE: Disabling ACPI _does_ correct the problem. Any idea what could have changed such that the interrupt storm throttler no longer works? Joe >=20 > Robert N M Watson FreeBSD Core Team, TrustedBSD Projects > robert@fledge.watson.org Principal Research Scientist, McAfee Resear= ch >=20 >=20 >=20 --=20 Joe Marcus Clarke FreeBSD GNOME Team :: gnome@FreeBSD.org FreeNode / #freebsd-gnome http://www.FreeBSD.org/gnome --=-aDueMSkkOG5wXnKLei/F Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBkonqb2iPiv4Uz4cRAgs3AJ9Jmc/QogI8mSvmew8AHjYpNN7hxACfWqD8 /aGLMuBrwJsnUYabmbiScFA= =XwXV -----END PGP SIGNATURE----- --=-aDueMSkkOG5wXnKLei/F--
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