[CentOS] Poor RAID performance new Xeon server?
lists at pinkyboots.co.uk
Sat Jan 10 22:46:06 UTC 2009
I have just purchased an HP ProLiant HP ML110 G5 server and install ed
CentOS 5.2 x86_64 on it.
It has the following spec:
Intel(R) Xeon(R) CPU 3065 @ 2.33GHz
4GB ECC memory
4 x 250GB SATA hard disks running at 1.5GB/s
Onboard RAID controller is enabled but at the moment I have used mdadm
to configure the array.
RAID bus controller: Intel Corporation 82801 SATA RAID Controller
For a simple striped array I ran:
# mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1
# mke2fs -j /dev/md0
# mount -t ext3 /dev/md0 /mnt
Attached are the results of 2 bonnie++ tests I made to test the performance:
# bonnie++ -s 256m -d /mnt -u 0 -r 0
# bonnie++ -s 1g -d /mnt -u 0 -r 0
I also tried 3 of the drives in a RAID 5 setup with gave similar results.
Is it me or are the results poor?
Is this the best I can expect from the hardware or is something wrong?
I would appreciate any advice or possible tweaks I can make to the
system to make the performance better.
The block I/O is the thing that concerns me as mostly I am serving a
650MB file via samba to 5 clients and I think this is where I need the
Plus I am hoping to run some virtualised guests on it eventually, but
nothing too heavy.
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