Martin Simmons wrote:
>> But my backup de-spooling speed sucks (at best):
>> 10-Jul 11:31 bacula-sd JobId 16716: Despooling elapsed time = 03:06:23,
>> Transfer rate = 715.3 K bytes/second
>> 10-Jul 11:31 bacula-sd JobId 16716: Spooling data again ...
>> 10-Jul 11:34 bacula-sd JobId 16716: User specified spool size reached.
>> 10-Jul 11:34 bacula-sd JobId 16716: Writing spooled data to Volume.
>> Despooling 8,000,008,095 bytes ...
>>
>> Note . .. in the first 4-5 incremental jobs I actually go ~80MB/s on it, so
>> it has just degradede over night.
>>
>> Any suggestions?
> 
> Is the drive shoe-shining?
> 
> What does iostat show about the devices during despooling?
> 
> Have you tested the performance of tar writing to a tape from the tmpfs?

It hadn't got the spool-size reduced, so it started swapping that 
decreased the performance. Now it works excellent. I occationally get as
high as:
14-Jul 14:45 bacula-sd JobId 16880: Despooling elapsed time = 00:01:17, 
Transfer rate = 103.8 M bytes/second

The transfer speed is not "constant" but that may be due to 
compressionrates of the actual data. The worst has been over 60 MB/s 
anyway, so this is excellent for my backup-requirements.

-- 
Jesper

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