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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!nntp.coast.net!news-peer.gsl.net!news.gsl.net!news.mathworks.com!news.bbnplanet.com!cam-news-hub1.bbnplanet.com!news.idt.net!enews.sgi.com!ix.netcom.com!news From: scrantr@ix.netcom.com (Richard Scranton) Newsgroups: comp.unix.bsd.freebsd.misc Subject: IDE disk performance with multiple controller cards Date: Tue, 21 Jan 97 22:56:54 GMT Organization: LDA Systems, Columbus Lines: 26 Message-ID: <N.012197.175654.07@scrantr> References: <32B744C0.2DA9@wdc.net> <5c08m3$dvk@qnx.com> <5c14ih$7nn@uriah.heep.sax.de> <5c2rm9$fjs@helena.MT.net> <5c30qo$4in@qnx.com> NNTP-Posting-Host: col-oh2-25.ix.netcom.com X-NETCOM-Date: Tue Jan 21 3:00:18 PM PST 1997 X-Newsreader: Quarterdeck Message Center [1.0] Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:34297 Awhile back. I added a second disk to a 486dx2-66 running v2.0.5, and added a swap partition so that swap was distributed across both disks, 32 megs each. I got the distinct impression at the time that swapping was actually *slower* with swapping to both disks than previous, but forgot about it, as it wasn't a big change in system performance and I really needed the extra disk storage. Well... in a fit of compulsive hardware mashing, I recently added a second IDE paddle card and moved the second disk to it, running both as primary drives. I now subjectively see (or think I see) a noticeable improvement in how the system behaves. X is more responsive, as are Postgres, the NCSA httpd server, a handful of smbd instances, and a PPP dial-up line for telnet/ftp/Samba access (at least I've deluded myself into believing they are). It supports all that crap in 16 megs of RAM and pages a little, but not excessively. Is there in fact any overlapping I/O going on now that wasn't previously? Or... am I delerious from too many late evenings with a screwdriver? ---- ======================================== Richard Scranton - LDA Systems, Columbus scrantr@ix.netcom.com