Il 11/03/2011 10:48, Laurent HENRY ha scritto:
> Le Wednesday 09 March 2011 16:28:52, vous avez écrit :
>>> I tried to enable spooling (500 Gb spool) for the tape backup. The perf
>>> were worse.
>>
>> BTW, I use 5GB spool.
>>
>> I assume then you do not run concurrent jobs? For a single job the
>> time will be longer because bacula does not concurrently spool and
>> despool but with concurrent jobs and spooling with a few GB spool size
>> bacula will maximize the performance of the tape drive when spooling
>> is enabled. I get despool rates of 20 to 50MB/s for LTO2 which is
>> about what the tape drive can handle. The rates vary because of
>> compression.
>
> Yes, i use just one job at a time.
>
>>
>>> For disk backup, it seems to me spooling does not make sense.
>>
>> Attribute spooling makes sense for either though.
>
> Attribute spooling ?
>

It refers to spooling of file attributes.
IME if you activate spooling, file attributes are automatically spooled 
as well.

>
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-- 
Marcello Romani

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