[Samba] cpu load on centOS 4.4

Jason Baker jbaker at glastender.com
Tue Apr 24 18:17:23 GMT 2007

I had a similar problem when I installed our new servers a couple months 
ago. I'm running 3Ware 9550SX-4LP (SATA) cards in CentOS 4 boxes. I had 
absolutely horrible performance and tried everything I could to get it 
working better. Finally I discovered that I had the on-board caching 
turned off on the cards, because they don't have the on-board battery 
backup. My entire system is on a battery backup, so I figured I'd give 
it a shot. My speeds went through the roof. Now the server is what I 
would consider "normal", even copying large files doesn't slow things 
down. I would check and see if your cards have any time of on-board 
caching and enable it. Good luck.

*Jason Baker
*/IT Coordinator/

*Glastender Inc.*
5400 North Michigan Road
Saginaw, Michigan 48604 USA
Phone: 989.752.4275 ext. 228
Fax: 989.752.4444
www.glastender.com <http://www.glastender.com>

Version: 3.1
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w !O M !V PS PE++ Y? PGP- t 5? X+ R+ tv+ b- DI-- D++ G e+ h--- 
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On 4/24/2007 1:30 PM, Deno Vichas wrote:
> Hello all,
> I've installed samba on pretty basic install on centos 4.4.  I'm running
> a P4 2.8Ghz, 1G Ram, Raid 5 SATA-2 disks running on both a 3ware and
> Highpoint Rocket raid (this is going to get swapped out for a 3ware card
> soon).  When users copy files from a mac os x client I'm seeing the cpu
> load avg (in top) get up to 7.  These copies included 150+Gigs of lots
> of smaller files inside lots of directories.   Is this type of load
> normal?  If not where and what should I be looking at to find the
> problem?
> Thanks,
> deno

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