Path: utzoo!attcan!uunet!mcsun!unido!opal!tmpmbx!utopia!scuzzy!src
From: src@scuzzy.in-berlin.de (Heiko Blume)
Newsgroups: comp.unix.sysv386
Subject: Re: benchmarking SCSI host adapters
Message-ID: <1990Nov11.150618.15188@scuzzy.in-berlin.de>
Date: 11 Nov 90 15:06:18 GMT
References: <1686@chinacat.Unicom.COM>
Organization: Scuzzy Research Center (SRC)
Lines: 24

chip@chinacat.Unicom.COM (Chip Rosenthal) writes:
>My questions are twofold:  (1) has anybody looked at the BusTek adapter
>critically, and what results did you obtain, and (2) how useful is "bonnie"
>for disk system benchmarking?

re (1): never heard of :-)
re (2):
well, it says it's for file*system* benchmarking, but hardware is a issue
too, of course. here's what i get with ISC 2.2, 1542A and 638MB Imprimis:

              -------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
386/33     80   243 91.8   351 28.4   396 65.6   216 97.6   742 62.6  17.3 14.4

it should be noted that the throughput of data is influenced by DMA rate 
etc, but the (l)seeks/sec are not (unless you have a 3 second average seek
drive :-) given three processes that seek on the same file. does someone
know why this is so?
-- 
      Heiko Blume <-+-> src@scuzzy.in-berlin.de <-+-> (+49 30) 691 88 93
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