Date: Sun, 03 Apr 2005 23:18:23 +0200 From: Christian Brueffer <chris@unixpages.org> To: Matthias Buelow <mkb@incubus.de> Cc: freebsd-stable@freebsd.org Subject: Re: 5.4-prerelease - hanging under load Message-ID: <20050403211823.GS87756@unixpages.org> In-Reply-To: <20050403170216.GA680@drjekyll.mkbuelow.net> References: <424F5210.8060809@pldrouin.net> <20050403133200.GP87756@unixpages.org> <425014B2.9070208@pldrouin.net> <200504031834.54592@harrymail> <20050403170216.GA680@drjekyll.mkbuelow.net>
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--V4yrq4dHtCqH+JvC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Apr 03, 2005 at 07:02:16PM +0200, Matthias Buelow wrote: > Emanuel Strobl wrote: >=20 > >Huh? I thought by default it is "HIGH", but it would also explain the=20 > >experiences in the thread "cpufreq related RELENG_5 regression"=20 > >(http://www.freebsd.org/cgi/getmsg.cgi?fetch=3D389949+393881+/usr/local/= www/db/text/2005/freebsd-stable/20050327.freebsd-stable) >=20 > But does that also affect desktop machines? I'm not under the > impression that my CPU is running at a lower frequency. The issue > I mentioned only seems to occur when doing larger block reads/writes > from/to disk (SATA), like untarring firefox. I didn't notice it > so far when some kind of mixed disk access is going on, like with > find, compiling, etc. Maybe that points to some locking issues in > the VM corner? I mean, it's not dramatic, but still makes the > system appear a bit unpolished, when it happens. In the past, with > pre-5.x releases, FreeBSD has been scheduling disk i/o and interactive > work smoothly, in my experience, so one didn't quite notice when > heavy disk access was going on, at least not if your interactive > programs weren't doing much disk i/o themselves. >=20 Not sure about desktop machines, probably depends on what exactly you're doing. At least it affects real-world scenarios, see my original message to this list: http://lists.freebsd.org/pipermail/freebsd-stable/2005-March/013036.html - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --V4yrq4dHtCqH+JvC Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCUF2fbHYXjKDtmC0RAkcxAJ0bntojTno+O2vevD5IS3eXMJw0VQCg12eE XyOos+D4XRmnt6+eiP5YFuw= =4HxF -----END PGP SIGNATURE----- --V4yrq4dHtCqH+JvC--
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