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Date:      Fri, 10 Feb 1995 15:36:57 -0500
From:      Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu>
To:        hasty@netcom.com (Amancio Hasty Jr)
Cc:        FreeBSD-hackers@wcarchive.cdrom.com
Subject:   My iozone results
Message-ID:  <9502102036.AA03568@halloran-eldar.lcs.mit.edu>
In-Reply-To: <199502100637.WAA18562@netcom14.netcom.com>
References:  <199502100637.WAA18562@netcom14.netcom.com>

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<<On Thu, 9 Feb 1995 22:37:51 -0800, hasty@netcom.com (Amancio Hasty Jr) said:

> Anyone got better iozone results...

(<5MB/s results deleted)

> My system is a P66 VL with a Quatum Empire 2100 and a Adaptec 2842a VL.

My system in a 60 MHz Intel Premiere II with a Maxtor MXT-7540 IDE
drive and 40 MB of memory, running yesterday's kernel:

        MB      reclen  bytes/sec written   bytes/sec read      
        1       512     1278264             6100805             
        1       1024    1474920             8947848             
        1       2048    1427848             11184810            
        1       4096    1491308             13421772            
        1       8192    1474920             13421772            
        2       512     1248537             5835553             
        2       1024    1187767             7895160             
        2       2048    1451002             9586980             
        2       4096    1435483             10737418            
        2       8192    1458888             11671106            
        4       512     1376592             5711392             
        4       1024    1431655             7780737             
        4       2048    1443201             9586980             
        4       4096    1431655             10737418            
        4       8192    1451002             11422785            
        8       512     1405421             5621684             
        8       1024    1669893             7895160             
        8       2048    1626881             9673349             
        8       4096    1664716             10737418            
        8       8192    1768932             11422785            
        16      512     1434524             5711392             
        16      1024    1694935             7866240             
        16      2048    1692264             9629971             
        16      4096    1776247             10737418            
        16      8192    1885411             11422785            

This was with the on-board IDE (as opposed to a PCI IDE paddle card,
which some of our machines have).  Judging by the results, I'd say
everything was coming out of the buffer cache.

-GAWollman

--
Garrett A. Wollman   | Shashish is simple, it's discreet, it's brief. ... 
wollman@lcs.mit.edu  | Shashish is the bonding of hearts in spite of distance.
Opinions not those of| It is a bond more powerful than absence.  We like people
MIT, LCS, ANA, or NSA| who like Shashish.  - Claude McKenzie + Florent Vollant



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