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From: eoahmad@ntuix.ntu.ac.sg (Othman Ahmad)
Subject: bonnie i/o test results
Message-ID: <1992Nov6.144749.26760@ntuix.ntu.ac.sg>
Organization: Nanyang Technological University - Singapore
X-Newsreader: TIN [version 1.1 PL6]
Date: Fri, 6 Nov 1992 14:47:49 GMT
Lines: 38
Julian 486/50 16M RAM, bustek SCSI-2 disk,
-------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
32 405 48.2 389 8.4 152 5.6 505 53.1 461 10.3 20.0 5.0
My machine 386/25 8M RAM , IDE Maxtor 200M disk,
-------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
16 121 99.2 350 15.6 190 17.7 108 99.8 454 16.4 25.9 8.9
Just look at the Random seek figure, the smaller IDE is faster despite having
more CPU load.
Once I get to a 486/33, then you'll see comparable or even better performance
for IDE SCSI.
Some people posts to have the bigger file sizes but it is not to
my liking because it is not realistic to my use.
My prefered size is 500Kbyte, how large is xterm?
If you like to see how fast your disk it, you can use bonnie to find out.
What is important is your usual application.
Bonnie does not represent your normal C program because it now
does not use the default BUFSIZE, and there are attempts to minimise
the ability for a compiler to optimize its code.
bonnie is now more meant for people who use the same bufzie as bonnie,
i do not know what size it is,(trying to find out, any volunteer?),
and know how to code efficiently without relying on compilers to optimize its
code. I'm not one of those people. I do not have time for that.
--
Othman bin Ahmad, School of EEE,
Nanyang Technological University, Singapore 2263.
Internet Email: eoahmad@ntuix.ntu.ac.sg
Bitnet Email: eoahmad@ntuvax.bitnet