On 8/23/07, Angel Mieres <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> Im testing bacula with two jobs. One of them, backup over 70.000 files
> and have 2 Gb. Second one have over 100 files and have 1Gb.
> Why the first job is getting speed of 3.000 KB/sec and the second one
> 25.000 KB/sec?(the backup is to a file on both cases)
> Have bacula less performance with small files?
>
Is everything on one single server and on the same harddrive / raid array?

The first thought is that the biggest reason for the difference in
backup rates is that in the case of the small files your
harddrive/array is doing significantly more seeking than in the case
with a few large files and depending on how they are on your media
file readahead cache may be working against you.

Have you timed the same backups using tar? It should be shorter than
with bacula but does it have a similar ratio?

John

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