If your backups are slow, it seems that 2GB of RAM might be insufficient
for rsync to perform optimally.
On Mon, Nov 5, 2012 at 1:15 PM, Richard Shaw <[email protected]> wrote:
> On Mon, Nov 5, 2012 at 1:02 PM, Cassiano Surek <[email protected]> wrote:
>
>> Hello all,
>>
>> This is my first post to the list, so please be gentle. :)
>>
>> I have been running a backuppc server for a while, but recently it has
>> been running way too slow to be useful.
>>
>
> Mike is the guru here but I'll do my best to answer and I'm sure he'll
> correct me if I miss the mark. The first thing would be to make sure you're
> measuring the right metric :) See below:
>
>
>>
>> Both are connected to the same switch at the data centre using gigabit
>> interfaces.
>>
>> This yields:
>>
>> Backup size: 105.58 Gb (yep, it is quite big)
>> Speed: 0.29 Mb/s
>>
>> I believe the above is horrifically slow, but would welcome your wise
>> input.
>>
>
> I think you should me using the time it takes to complete the backup not
> the data rate. Rsync is only sending files that have changed (by time stamp
> for incrementals and checksums for full backups) so the data rate is a
> fairly useless metric after the first (or second?) full backup. Most of the
> time is probably spent making comparisons, not moving data.
>
> Richard
>
>
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--
Jeff Folsom
------------------------------------------------------------------------------
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