Bacula-users

Re: [Bacula-users] Bacula causing high disk-io on clients

2015-06-27 05:51:27
Subject: Re: [Bacula-users] Bacula causing high disk-io on clients
From: Dmitri Maziuk <dmaziuk AT bmrb.wisc DOT edu>
To: bacula-users AT lists.sourceforge DOT net
Date: Sat, 27 Jun 2015 04:45:39 -0500
On 6/26/2015 7:26 AM, Josh Fisher wrote:

> However, for backup devices lacking hardware compression (such as disk),
> compression may be warranted regardless of client connection speed. This
> is why a SD level compression feature would be useful.

Compressing data on the client means fewer bytes to send over the wire. 
Block-level compression like bzip2 tends to be completely cpu-bound and 
anything bigger than a cellphone tends to have plenty of cycles to 
spare. SD level compression is saving bandwidth where it's scarce at the 
cost of cycles that are abundant -- why would anyone *not* want it?

Dima


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