Date: Mon, 04 Nov 2002 08:48:01 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Doug Barton <DougB@FreeBSD.org> Cc: Kirk McKusick <mckusick@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, Conrad Sabatier <conrads@cox.net>, Stijn Hoop <stijn@win.tue.nl>, current@FreeBSD.org, raymond.j.kohler@lmco.com, drosih@rpi.edu, ak03@gte.com Subject: Re: cvs commit: src/sys/fs/specfs spec_vnops.c Message-ID: <90623.1036396081@critter.freebsd.dk> In-Reply-To: Your message of "Sun, 03 Nov 2002 23:40:12 PST." <3DC6245C.8D31A6A7@FreeBSD.org>
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In message <3DC6245C.8D31A6A7@FreeBSD.org>, Doug Barton writes: >Kirk, > >I'm adding a bunch of people to the list who were involved in a thread >on -current on this topic. I also tried this change and noticed that >things did seem a tiny bit snappier (although my system is slow enough >that it could have just been my imagination). All things considered, I think we should just pla to leave it this way for 5.0-R. Until now people were used to wait for fsck to finish, at least now they can do something in while it runs. I belive GEOM provides the framework where we can properly tag I/O requests with a priority, propagate that priority down to the device drivers and act accordingly in the disksort disk-scheduling code. That would allow us to address not only the bgfsck but also things like silly-seek-syndrome and other sub-optimal issues in our current I/O system. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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