Re: [CentOS] Slow performance

On 4/30/07, Ashley M. Kirchner ashley@pcraft.com wrote:

I'm posting this to both the Fedora as well as the CentOS lists in

hopes that somewhere, someone can help me figure out what's going on. I have a dual Xeon 3GHz server that's performing rather slow when it comes to disk activities.

The machine is configured with a single 160 GiB OS drive (with

CentOS 5.0) and 4x500 GiB drives setup in a RAID-5 configuration. All drives are setup for 3.0 GiB SATA link, and the motherboard also supports that. Looking in dmesg when the system comes up, I see that reflected as well:

What raid controller are you using? Have you read the disk tuning guide on the wiki (http://wiki.centos.org/HowTos/Disk_Optimization)? Also note that raid 5 is not the fastest option around. If you're really looking for speed, you should look at using raid 10.