On Tue, Feb 10, 2009 at 8:42 AM, Josh Fisher <jfisher AT pvct DOT com> wrote:
> (private) HKS wrote:
>>
>> Hi all,
>>
>> I'm relatively new to Bacula, but so far have been very impressed with
>> it. Right now, I'm backing up three separate data centers to Dell
>> 2950s with 3TB SATA RAID 5 disk arrays. I'm running Bacula 2.2.8 on
>> OpenBSD 4.4 with Postgresql 8.3.3.
>>
>> The only trouble I'm having is terrifically bad performance. As I
>> implied, this is backing up to an onboard disk array. My typical
>> backup is about 360MB, and the reported transfer rate is usually
>> around 1.5MB/s (despooling is around 30-40MB/s). This server is
>> connected to its clients via gigabit LAN, and these speeds are
>> suffered by all clients: good (dual quadcore Xeons with 16GB of RAM
>> and 15k SAS RAID 5 array) and bad (Soekris 5501 with solid-state CF
>> storage) alike; Windows 2003, FreeBSD 7, and OpenBSD 4.4; same or
>> different subnets.
>>
>> Can anybody make suggestions for tracking down this performance
>> bottleneck? Below is a brief list of the steps I've taken, and the
>> results. Thanks for the help.
>>
>
> Where is the Bacula database storage? Is it on the same RAID array that you
> are writing backup volumes to?

Yes. If it makes a difference, performance is virtually identical
between my oldest backup server (database about 2.5GB) and a fresh
install.

-HKS

>
>> -HKS
>>
>>
>>
>> Steps:
>> ---------
>> - Disabled spooling - transfer rate remained at 1-1.5MB/s
>> - Tested disk performance with dd - 100-200MB/s
>> - Disabled FileSet compression altogether - no change
>> - Enabled soft updates on /backups file system - no change
>> - Disabled GZIP compression - no change
>>
>>
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>

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