Date: Wed, 30 Jul 1997 12:06:40 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Steve Lalonde <steve@enta.net> Cc: questions@FreeBSD.ORG Subject: Re: ccd interleave for news spool Message-ID: <Pine.BSF.3.96.970730120405.9727F-100000@localhost> In-Reply-To: <199707300756.IAA14532@entity.enta.net>
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On Wed, 30 Jul 1997, Steve Lalonde wrote: > the man page for ccd says news spool should be a large interleave BUT im > being told to use as small as i can by > another news admin. > > current settings are > name interleave flags devices > ccd1 2048 none /dev/sd2e /dev/sd3e > > so whats the best interleave? The ccd(4) man page suggests using as big a interleave as you can: For random-access oriented workloads, such as news servers, a larger in- terleave factor (e.g., 65,536) is more desirable. Note that there isn't much ccd can do to speed up applications that are seek-time limited. Larger interleave factors will at least reduce the chance of having to seek two disk-heads to read one directory or a file. This has been tested in practice by a couple of FreeBSD developers. The name doesn't come to me at the moment, but if you poke through the -hackers list archives at http://www.freebsd.org you can find more info. If you haven't read ccd(4) yet I highly suggest it. It has lots of good information for using ccd. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major Spam routed to /dev/null by Procmail | Death to Cyberpromo
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