On 6/25/2015 8:59 AM, Alan Brown wrote:
> On 25/06/15 13:47, SPQR wrote:
>> Hello again,
>>
>> at the moment I'm using compression = gzip; how can I change the level of 
>> compression?
>>
>> Can I just write compression = lzo without any problems?
> Yes, but.....
>
> If you reduce the compression level then the disk will be hit harder,
> which means that your io load will go up.
>
> About compression:
>
> There is no need to use compression if the client's connection to server
> is 1Gb/s or faster and not much point at 100Mb/s. (Compression
> frequently slows things down at higher speeds as the CPU becomes a
> bottleneck. Using it is a tradeoff.)
>
> Compression is one of those things best only used for backups across a
> WAN. If you myst use it, then _benchmark_ things with and without. Most
> of the time where you think it will benefit communications on the wire
> you will find it actually penalises throughput.

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.


------------------------------------------------------------------------------
Monitor 25 network devices or servers for free with OpManager!
OpManager is web-based network management software that monitors 
network devices and physical & virtual servers, alerts via email & sms 
for fault. Monitor 25 devices for free with no restriction. Download now
http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users