Le jeudi 08 avril 2010 à 15:36 +0200, Norbert Schulze a écrit :
> Hello Gerald,
> 
> 
> > Is this running in a VM? I often see high CPU wait times when doing disk
> > I/O in a VM. 
> 
> No, it is a normal system with a hardware raid-controller.

Do you have a BBU on the raid controler ?

Hardware RAID without BBU (and of course, without write-back cache
enabled) is usually *very* slow, much slower than simple disk system, or
software RAID.

Regards, Daniel

> 
> 
> Regards
> Norbert
> 
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> BackupPC-users mailing list
> BackupPC-users AT lists.sourceforge DOT net
> List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
> Wiki:    http://backuppc.wiki.sourceforge.net
> Project: http://backuppc.sourceforge.net/

-- 
Daniel Berteaud
FIREWALL-SERVICES SARL.
Société de Services en Logiciels Libres
Technopôle Montesquieu
33650 MARTILLAC
Tel : 05 56 64 15 32
Fax : 05 56 64 15 32
Mail: daniel AT firewall-services DOT com
Web : http://www.firewall-services.com


------------------------------------------------------------------------------
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/