Bacula-users

[Bacula-users] Short (minimiscule) spool files -> poo performance

2008-06-11 06:35:45
Subject: [Bacula-users] Short (minimiscule) spool files -> poo performance
From: Terry Collins <terryc AT woa.com DOT au>
To: bacula-users AT lists.sourceforge DOT net
Date: Wed, 11 Jun 2008 20:28:12 +1000
As I understand it,the idea behind a spool file is to buffer the tape 
device,so that the tape drive is kept in streaming mode as much as possible.

HJowever, my installation has this habit of deciding to buffer in 1.2Mb 
chuncks, for a 44Gb backup,

This is a bit from the report
.................................................
Looking for ideas to overcome the problemThis is a shot fr

11-Jun 12:03 bluewren-dir: Start Backup JobId 1063, 
Job=HarrierFull.2008-06-11_11.30.00
11-Jun 12:03 bluewren-sd: Spooling data ...
11-Jun 12:03 bluewren-sd: User specified spool size reached.
11-Jun 12:03 bluewren-sd: Writing spooled data to Volume. Despooling 
1,290,480 bytes ...
11-Jun 12:03 bluewren-sd: Spooling data again ...
11-Jun 12:03 bluewren-sd: User specified spool size reached.
11-Jun 12:03 bluewren-sd: Writing spooled data to Volume. Despooling 
1,290,480 bytes ...
11-Jun 12:03 bluewren-sd: Spooling data again ...
11-Jun 12:03 bluewren-sd: User specified spool size reached.
11-Jun 12:03 bluewren-sd: Writing spooled data to Volume. Despooling 
1,290,480 bytes ...
11-Jun 12:0

........................................................
I have a 20gb spool file area defined in as below;

Device {
      Name = Drive0
      Media Type = DLT
      Archive Device = /dev/nst0
      Automatic Mount = Yes;
      Always Open = Yes;
      Random Acess = No;
      Spool directory = /data1/bacula-spool-dir
      Spool size = 20480000000
}

Is ths correct?
And should it befined anywhere else?

this is part of looking for cluebies to improve performance really. 
somedays it all flies like the clappers and other days it struggles.

Basically 100Mb UTP through #com switch (aka good one0 and DLT does 
about 5Mb/sec reported on Adapted 2940(scsi wide 68pin). The 
boxen(debian sarge) really jst runs bacula and nfs to two linux boxen 
and samba to two mswin boxen that do very little.

T.I.A.


-- 
Terry Collins {:-)}}}}}
Email: terryc200710 - at - woa.com.au Web: http://www.woa.com.au/terryc
Bicycles, Bushwalking, GIS, Appropriate Technology, Natural Environment, 
Welding

-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users

<Prev in Thread] Current Thread [Next in Thread>