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Date:      Thu, 15 Mar 2001 20:15:54 +0100
From:      javor.evstatiev@blue-c.com
To:        freebsd-questions@freebsd.org
Subject:   poor scsi hd performance
Message-ID:  <OF9F911B27.19172ED9-ONC1256A10.006909CA@blue-c.com>

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Hi!

I got my fingers on a recent compaq proliant 1600 (640M/p3xeon700/7200rpm
scsii) for a web server. Choice was Linux or BSD, and I decided to try
FreeBSD :)This is how it looks like:

bash-2.04# dmesg | grep da0
Mounting root from ufs:/dev/da0s1a
da0 at sym1 bus 0 target 0 lun 0
da0: <COMPAQ BD0186349B 3B11> Fixed Direct Access SCSI-2 device
da0: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing
Enabled
da0: 17365MB (35565080 512 byte sectors: 255H 63S/T 2213C)

bash-2.04# camcontrol negotiate da0
Current Parameters:
(pass0:sym1:0:0:0): sync parameter: 10
(pass0:sym1:0:0:0): frequency: 40.000MHz
(pass0:sym1:0:0:0): offset: 31
(pass0:sym1:0:0:0): bus width: 16 bits
(pass0:sym1:0:0:0): disconnection is enabled
(pass0:sym1:0:0:0): tagged queueing is enabled

so, now, something from the daily life:

bash-2.04# time tar xzf apache_1.3.19.tar.gz

real    0m8.723s
user    0m0.267s
sys     0m0.216s

I can't believe it should take 9 secs to decompress a 2 meg tarfile :( All
linux boxes are faster - even the IDE based desktops...

Any ideas what/how to tune ? Thx 4 any info in advance!

____________________________________________________
Javor Evstatiev
Technical Consultant

BLUE C New Economy Consulting & Incubation AG
A-1070 Vienna, Neubaugasse 12-14/2/2
Office: +43  1  524 01 41 - 130
Mobile: +43  664 619 46 25
Fax: +43  1  524 01 42
____________________________________________________
Visit our website http://www.blue-c.com to learn more about the
New Economy Architects

Can i dial 1-255-255-255255 and make every phone in the world ring?   --
Tanuki




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