Date: Tue, 8 Feb 2005 19:19:55 +0200 From: Ion-Mihai Tetcu <itetcu@people.tecnik93.com> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-stable@freebsd.org Subject: Re: ULE status Message-ID: <20050208191955.269cc95b@it.buh.cameradicommercio.ro> In-Reply-To: <20050208163915.GC43054@xor.obsecurity.org> References: <Pine.BSO.4.56.0502081306440.28295@ux11.ltcm.net> <200502081333.08964.michaelnottebrock@gmx.net> <4253.213.222.48.10.1107866717.squirrel@mailgw.icon.bg> <20050208155822.29df9373@it.buh.tecnik93.com> <20050208163915.GC43054@xor.obsecurity.org>
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On Tue, 8 Feb 2005 08:39:15 -0800 Kris Kennaway <kris@obsecurity.org> wrote: > On Tue, Feb 08, 2005 at 03:58:22PM +0200, Ion-Mihai Tetcu wrote: > > On Tue, 8 Feb 2005 14:45:17 +0200 (EET) > > "Viktor Ivanov" <v0rbiz@icon.bg> wrote: > > > > > On Tue, ???????? 8, 2005 14:33, Michael Nottebrock ????: > > > > On Tuesday, 8. February 2005 13:07, Mipam wrote: > > > >> I saw several changes to sched_ule.c in the 5 stable branch. > > > >> Beneath is one of them: > > > >> > > > >> http://lists.freebsd.org/pipermail/cvs-src/2005-February/039863.html > > > >> > > > >> Is the ULE scheduler still far from stable in RELENG_5 or not? > > > > > > > > You can now compile a kernel with options SCHED_ULE again. How well it > > > > works > > > > is for yourself to determine :-) (I've been using it on my UP machine here > > > > since yesterday only). > > > > > > Hi there > > > > > > I've been using only SCHED_ULE on my UP WS, even when there was #error > > > def. It never broke, not even once :) Though I think there's trouble > > > with SMP and/or HTT. I tried it once on a P4 and it paniced. > > > > > > On the other hand, using SCHED_ULE improves sound quality and general > > > system 'response' concerning GUI... don't know 'bout performance. > > > > By any chance does it help with copying from ata disks on different > > controllers ? For me on large files this brings up "swap_pager: > > indefinite wait buffer" with 4BSD. > > That doesn't sound like a scheduler problem, rather a hardware or ata > driver problem. I know it's not likely to be schedule issue, but it doesn't hurt to ask :-) And please don't tell me it's hardware, I've changed a few motherboards (all VIA 8235/8237) and different manufacturer / types / firmware revisions HDDs since 5.0 because after an update or another some specific combination ceased to work. It seems some kind of regression introduced sometime after 5.3 release. > Did you try sos' new driver yet? Nope, I didn't have the time. Given my luck with ata it is rather prudent to back-up ~200GB before trying. -- IOnut Unregistered ;) FreeBSD "user"
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