Amanda-Users

Amanda Processes using too much of the system CPU, how to throttl e back

2004-07-01 09:13:53
Subject: Amanda Processes using too much of the system CPU, how to throttl e back
From: donald.ritchey AT exeloncorp DOT com
To: amanda-users AT amanda DOT org
Date: Thu, 1 Jul 2004 08:09:37 -0500
Hopefully this won't be too hard to resolve, but we are having some problems
with resource conflicts between Amanda and the software package that is the
reason we are running the server.  (Guess who looses in the management
tug-of-war on this one.)

Several times during the Amanda backup of one of our servers, the CPU
utilization goes up to 100 percent and the system becomes very unresponsive.
The finger has been pointed at Amanda since the high runner processes at
this point are vdump and gzip (the systems are Tru64 UNIX clusters, thus
vdump).  I have changed the backup type from client-compress to
server-compress, but that does not completely resolve the problem, we still
see the slowdowns.

How do I throttle back the Amanda processes without killing my backups
entirely?  

Is there a setting for this in the amanda.conf file that I have missed?  

Do I have to go into the source and start hacking on Amanda to add a new
"feature"?

Any pointers would be appreciated, but I have already looked at the
FAQ-O-Matic and came up dry.

Thanks,

Donald L. (Don) Ritchey
Information Technology

System Administrators Credo:  
        You are NOT paranoid.  They ARE out to get you.  Prepare
accordingly.


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