On Mon, Jan 14, 2013 at 8:53 AM, Steve Thompson <smt AT vgersoft DOT com> wrote:
> Bacula 5.2.10, CentOS 5/6, x86_64.
>
> Just a curiosity. I note that full backup performance across many systems
> is typically in the 6-10 MB/sec range; I am using GZIP4 and the backups
> are typically compute bound doing software compression (clients are Xeons
> in the 3GHz range, and the SD is a 2GHz Xeon system, with all backups done
> to disk. The SD is about half a mile distant). However, if I do a restore
> of a large volume of data, I get 32-35 MB/sec. Seems a little odd that it
> is so asymmetrical.

I would say this is a combination of filesystem performance ( remember
that when you backup there can be a lot of seeks that reduce
performance) and decompression performance. Decompression is less CPU
intensive than compression.

John

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