Bacula-users

Re: [Bacula-users] Interesting performance observation

2010-12-06 18:56:17
Subject: Re: [Bacula-users] Interesting performance observation
From: Steve Thompson <smt AT vgersoft DOT com>
To: bacula-users AT lists.sourceforge DOT net
Date: Mon, 6 Dec 2010 18:54:21 -0500 (EST)
On Mon, 6 Dec 2010, Josh Fisher wrote:

> On 12/5/2010 9:20 AM, Steve Thompson wrote:
>> Bacula 5.0.2. This is not a problem; just an observation.
>>
>> I do backups to disk only, using six RAID arrays for storage, totalling
>> 45TB physical disk. Originally I used six pools and six devices, but ran
>> into disk space management issues. This setup was converted to one device
>> and one pool per client (about 50). Backups are compressed and TLS is used
>> (storage is offsite). No other changes were made: backup throughput
>> performance almost exactly doubled.
>
> If multiple jobs were running simultaneously with the 6 device setup,
> then that would skew the results of a direct job-to-job comparison.

Yes, this is true. However, the jobs themselves, and their schedules, were
not changed; the same concurrency was in place both before and after.

Steve
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Steve Thompson                 E-mail:      smt AT vgersoft DOT com
Voyager Software LLC           Web:         http://www DOT vgersoft DOT com
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Ithaca, NY 14850
   "186,282 miles per second: it's not just a good idea, it's the law"
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