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Date:      Mon, 10 Sep 2001 8:46:37 +0100
From:      Matthias Bartels <mbartels@genie.de>
To:        "questions@freebsd.org" <questions@freebsd.org>
Subject:   harddisk performance
Message-ID:  <B3005358253@i01sv4107.ids1.intelonline.com>

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Servus,

hi some weeks ago i kicked my linux and became a freebsd user and i am
really happy with my decision.

But i have still one problem, my harddisk performance.

i am using a maxtor U/DMA 100 drive, and freebsd is using U/DMA 100 
Kernelmessage:

ad0: 38182MB <MAXTOR 4K040H2> [77578/16/63] at ata0-master UDMA100

my problem is performance when writing to the disk, that's why i made
a benchmark with bonnie 

this are the results:

Machine    MB 100

-------Sequential Output-----
----Per Char- --Block--- -Rewrite--
 K/sec %CPU    K/sec %CPU  K/sec %CPU
 7628 13.5     8434  5.5   8746  6.9

---Sequential Input--
-Per Char- --Block--- 
K/sec %CPU  K/sec  %CPU
42264 100.0 235777 100.0

--Random--
/sec    %CPU
27737.9 99.8


as you can see, the reading performance is ok, but writing
performance? :(

does anybody know what i am doing wrong??
Thank you

M.Bartels


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