Bacula-users

[Bacula-users] Bacula transfer limited 100Mbit/s

2013-05-03 17:32:50
Subject: [Bacula-users] Bacula transfer limited 100Mbit/s
From: jburkemx <bacula-forum AT backupcentral DOT com>
To: bacula-users AT lists.sourceforge DOT net
Date: Fri, 03 May 2013 14:28:45 -0700
When spooling to disk I still get only a max of 100Mbit.  When writing to tape 
I get exactly the same network transfer speed.  Here is a screen shot of a run 
with spooling enabled. 

http://screencast.com/t/rCU6UAZ8MpHj

Those dips are when the 20GB spool is written to the tape.  Notice that the 
dips are much shorter which means the Tape drive is faster than the network 
speed.

I have an TL2000 w/dual LTO5 and when running the btape speed tests I get the 
the following results:

zero data = 146.4 MB/s to 189.4 MB/s
random data = 56.51 MB/s to 116 MB/S

zero data and bacula block structure = 111 MB/s to 151.5 MB/S

The slowest tape speed (56.51 MB/s = 452 Mbit/s) is still way faster than the 
network transfer speed.


Though now that i'm running a test rsync I'm getting the same bandwidth 
limiting.. odd, so it's probably not bacula at all.

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