Amanda-Users

Re: Why am I client constrained?

2004-09-01 15:53:28
Subject: Re: Why am I client constrained?
From: Frank Smith <fsmith AT hoovers DOT com>
To: Mike Fedyk <mfedyk AT matchmail DOT com>, amanda-users AT amanda DOT org
Date: Wed, 01 Sep 2004 14:51:06 -0500
--On Wednesday, September 01, 2004 12:29:56 -0700 Mike Fedyk <mfedyk AT 
matchmail DOT com> wrote:

> Hi,
> 
> Right now, most of everything is on one file server, but I'd like to have 
> some DLEs SW compress on the server, and some compress on the client.  The 
> problem is that Amanda 2.4.4p3-1 (Debian) is still only backing up one DLE at 
> a time, and amstatus
> reports that it is client constrained.

Two possibilities I can think of rightt off:

inparallel 1, only does one client at a time
no (or too small) holdingdisk, so dumps can't run in parallel

> 
> Let me know if you need any more info.
> 
> Mike
> 
> srv-lnx2600     /share/letter_art                comp-tar-high    0
> srv-lnx2600     /share/accounting                srvcomp-tar-high 1
> srv-lnx2600     /share/sales                     comp-tar-high    0

A third possibility:

By default maxdumps is 1 (max number of concurrent dumps per client),
and it looks like all your DLEs are on the same server, so only one
will run at a time.  For client-compress. maxdumps should probably
be set =< number of CPUs, and if you make it > 1 you might need to
add spindle numbers to your entries so you don't have disk contention
if some of your DLEs share a physical drive.

Frank
> 
> 
> 
> define dumptype comp-tar {
>     default
>     program "GNUTAR"
>     comment "partitions dumped with tar and compressed"
>     compress client best
>     index
> }
> 
> define dumptype srvcomp {
>     compress server best
> }
> 
> define dumptype comp-tar-high {
>     comp-tar
>     priority 4
> }
> 
> define dumptype srvcomp-tar-high {
>     comp-tar
>     comp-tar-high
>     srvcomp
> }
> 



-- 
Frank Smith                                      fsmith AT hoovers DOT com
Sr. Systems Administrator                       Voice: 512-374-4673
Hoover's Online                                   Fax: 512-374-4501


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