Re: [BackupPC-users] CPU Load statistics (Was: Re: OK, how about changing the server's backuppc process niceness?)

[Craig B. <cba...@us...>]

Les writes:

> There is quite a bit of overhead on the server side when you are
> doing a full rsync backup because it does block-checksum compares
> against existing files and has to uncompress for this calculation.
> (Craig - if you are listening, are these cached or recomputed every
> run)?

The checksums are cached (and therefore only computed once
after caching) if --checksum-seed=3D32761 is included in
$Conf{RsyncArgs}).

However, the disk seeks to read the cached checksums are
still time consuming - the savings from caching the
checksums are less than I expected.

Craig