*BSD News Article 65047


Return to BSD News archive

Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!qns3.qns.com!imci4!newsfeed.internetmci.com!in2.uu.net!EU.net!Belgium.EU.net!god.bel.alcatel.be!bln.sel.alcatel.de!news
From: blume_h@slbh03.bln.sel.alcatel.de (H. Blume von Contributed)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: ccd/disk striping interleave for news host?
Date: 01 Apr 1996 14:24:23 +0200
Organization: Alcatel SEL
Lines: 22
Sender: blume_h@slbh03.bln.sel.alcatel.de
Message-ID: <k820m8i13c.fsf@slbh03.bln.sel.alcatel.de>
NNTP-Posting-Host: slbh03.bln.sel.alcatel.de
X-Newsreader: Gnus v5.1

hello

has anybody tried disk striping using the ccd driver
for a usenet news spool filesystem? 
what is the optimum interleave?
how many articles can be stored per second?

i have watched a news host with the 'systat -vm'
command. a 100mhz pentium with 32M, pci adaptec, 1gb
system disk plus 4gb news spool, both fast scsi-2,
can store approximately 2 articles per second from
a gzipped uucp feed. the news spool disk performs
about 50 seeks per second reading/writing about 6KB
per seek. not very exciting.

i'll add three 2GB barracudas soon...

tia, hb
-- 
email: src@contrib.net / Heiko.Blume@bln.sel.alcatel.de
TCP/IP GmbH, Woertherstr. 16, 10405 Berlin
Tel: +49.30/443366-0, Fax: +49.30/443366-15