Date: Sun, 23 Apr 2000 06:37:14 +0000 From: Mike Muir <mmuir@es.co.nz> To: Alfred Perlstein <bright@wintelcom.net> Cc: Mike Smith <msmith@FreeBSD.ORG>, stable@FreeBSD.ORG Subject: Re: amr still seems to have issues. Message-ID: <39029A1A.D1CE182F@es.co.nz> References: <20000421003205.A25458@fw.wintelcom.net> <200004211644.JAA02335@mass.cdrom.com> <20000421105539.C10782@fw.wintelcom.net> <20000421133517.I10782@fw.wintelcom.net>
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Alfred Perlstein wrote: > I'm looking into the enclosure issues. I appreciate the continued > help from you. > > I was wondering if anyone else on the lists have had the same problems > as I have been having with the Enterprise 1200 (3 scsi port) version. Just as a kind of follow up to this and Martin's reply, I have a 1200 series 2 channel controller with 4 megs of cache (was going to be 8 until the 2 simms i was sent by CSO didnt want to work whatsoever.. they were IBM too.. weird) I have two 9.1 gig drives, one on each channel (soon to be 3 drives) and i've had only one problem to date, which was the wedged bug a couple days ago, but bear in mind this was with the older driver which didnt have the command limit. I'm building world right now (actually ive already built it once, ran out of /var for the bw.out and couldnt be sure if i had finished the build, so im building it again) and theres no problems. I've been using bonnie, rawio and iozone extensively with the older v1.7 amr.c and ive had no problems at all. If you are interested, here are the bonnie results with -s 100 command args. I'm using 64KB stripe sizes, Cached IO and Write Back caching: | -------Sequential Output-------- ---Sequential Input-- --Random-- | | -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- | | MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU | | 100 13324 74.0 13577 30.7 14245 42.2 14598 100.0 96666 100.0 10509.9 99.9 | And with Write Through: | -------Sequential Output-------- ---Sequential Input-- --Random-- | | -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- | | MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU | | 100 12730 74.2 13045 35.7 5611 20.3 12886 93.0 15655 24.2 225.6 4.7 | I'm interested to know if these are reasonable figures for the configuration (P2/450.) Havn't been able to try 128KB stripe widths due to lack of cache (well the bios wont let me due to 'not enough memory' so im assuming its this) but ive heard 64KB is the way to go. I know this probably isnt of much help to your problem, but I thought a little good news (in terms of stability) would be appreciated from msmith heh. Regards, mike. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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