John Drescher wrote:

>>>> - Thomas
>>> I've added both spool attributes and spool data. Backup speed of my mail
>>> server is still about 1 MB per second. Backup speed for other machines
>>> now reaches up to 80 MB/s.
>>>
> 
> Are you talking about a full backup or some other level? If it is not
> a full backup
> you will get low speed because bacula only is backing up the changed files
> and it takes a long time to go through a filesystem with many thousands of 
> files
> to find out what files have changed.

Additionally, if the emailserver is using mdir format there are 
thousands (millions?) of tiny files and there's a fixed overhead in 
opening each file no matter what its size is - that results in slow 
speeds when handling lots of small files.




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