Amanda-Users

Re: Running amdump leads to high CPU load on Linux server

2003-11-23 20:31:20
Subject: Re: Running amdump leads to high CPU load on Linux server
From: Jon LaBadie <jon AT jgcomp DOT com>
To: amanda-users AT amanda DOT org
Date: Sun, 23 Nov 2003 20:28:48 -0500
On Sun, Nov 23, 2003 at 07:46:32PM -0500, Kurt Raschke wrote:
> I've recently begun to have trouble with the Linux system that is my
> amanda server...when amdump runs, the load spikes to between 4.00 and
> 6.00, and the system becomes nearly unresponsive for the duration of
> the backup.  The server is backing up several local partitions, and
> also two partitions on remote servers.  I've tried starting amdump
> with nice and setting it to a low priority, but when gtar and gzip are
> started by amanda, the priority setting is somehow lost.  The server
> isn't even trying to back up multiple partitions in parallel, so I'm
> at a loss as to how this is happening, especially on a fairly fast
> server (dual Athlon MP 2000).
> 
> Any suggestions?

As you are using gzip, is it with the "best" or the "fast" option?
The latter uses MANY fewer cpu cycles.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
 Princeton, NJ  08540-4322      (609) 683-7220 (fax)