Date: Mon, 22 Mar 1999 01:11:12 +0100 From: Ollivier Robert <roberto@keltia.freenix.fr> To: freebsd-scsi@FreeBSD.ORG Subject: Re: cvs commit: src/sys/cam cam_xpt.c Message-ID: <19990322011112.A61015@keltia.freenix.fr> In-Reply-To: <Pine.BSF.4.10.9903211744030.1893-100000@picnic.mat.net>; from Chuck Robey on Sun, Mar 21, 1999 at 05:49:45PM -0500 References: <19990321110510.38582@uriah.heep.sax.de> <Pine.BSF.4.10.9903211744030.1893-100000@picnic.mat.net>
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According to Chuck Robey:
> -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 100 6229 80.9 6213 34.9 2250 13.5 5711 79.7 6390 25.6 85.2 4.6
OK, here are my results, unfortunately for the IBM, the partition is not
empty and not at the best place... I've tried with 2 & 32 tags and with WC
(write cache) on & off.
In truth, I'm fairly disappointed by the IBM drive... especially compared
to the Conner one.
NCR-810 card, K6/200
-=-=-=-=-=-=-
Conner CFP1080S narrow, 31 tags (as reported by camcontrol), 5400 rpm
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1080S 100 4305 53.9 4194 15.6 2138 8.0 4298 34.2 4371 9.2 81.8 3.0
NCR-875 card (32 tags max.), K6/200.
-=-=-=-=-=-=-=-=-=-=-=-=-=-
DCAS-34330W, 32 tags, WCE=0, 5400 rpm
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
34330W 100 2604 33.0 2169 8.4 1910 8.1 5547 44.9 5362 12.9 116.8 4.0
DCAS-34330W, 32 tags, WCE=1
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
34330W 100 2927 37.1 2382 9.4 1933 8.3 5588 45.0 5724 13.9 116.0 3.9
DCAS-34330W, 2 tags, WCE=0
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
34330W 100 2021 25.4 1697 6.7 1989 8.1 5532 44.8 5661 13.6 117.4 3.8
DCAS 34330W, 2 tags, WCE=1
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
34330W 100 5358 69.2 5208 22.4 2348 9.4 5592 45.0 5717 13.8 116.4 3.7
Adaptec 7880 UW found on an Intel Providence card, 2x PPro.
-=-=-=-=-=-=-
Viking II, 63 tags, WCE=0, 7200 rpm
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
VikingII 128 8799 93.5 8318 34.6 3504 15.0 9497 91.8 10720 24.8 140.5 5.3
--
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 4.0-CURRENT #70: Sat Feb 27 09:43:08 CET 1999
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