Re: RHEL 3 x86 and LSI Megaraid

[Jesse Keating <jkeating j2solutions net>]

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On Thursday 23 October 2003 15:05, Arjan van de Ven wrote:
> how are you measuring?
> Please use dd on a file not /dev/sdc since devices don't do readahead

We were using hdparm -t, as well as tiobench.  Overall performance 
seems=20
ot be around 12~20MB/s

[root kickstation-131 data1]# ls -alh bigfile
=2Drw-r--r--    1 root     root        1000M Oct 23 18:23 bigfile

[root kickstation-131 data1]# time dd if=3Dbigfile of=3Dsecondfile
2048000+0 records in
2048000+0 records out
=20
real    0m55.419s
user    0m1.530s
sys     0m24.570s

This is a hardware mirror of 2 10K rpm Seagate 73gig u320 drives.

Thats like 18M/s, not very stellar.

=2D-=20
Jesse Keating RHCE MCSE (geek.j2solutions.net)
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=20
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