 | | | RHEL 3 x86 and LSI Megaraid | RHEL 3 x86 and LSI Megaraid 2003-10-23 - By Jesse Keating
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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@(protected) data1]# ls -alh bigfile
=2Drw-r--r-- 1 root root 1000M Oct 23 18:23 bigfile
[root@(protected) 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)
=46edora Legacy Team (www.fedora.us/wiki/FedoraLegacy)
Mondo DevTeam (www.mondorescue.org)
GPG Public Key (geek.j2solutions.net/jkeating.j2solutions.pub)
=20
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