On Wednesday 18 January 2006 14:30, Marcin Wasilewski wrote:
> ----- Original Message -----
> From: "Florian Schnabel" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Wednesday, January 18, 2006 11:53 AM
> Subject: Re: [Bacula-users] How to speed up the backup.
>
> > Marcin Wasilewski wrote:
> >> Hello,
> >>
> >> I wonder if You have any ideas how to speed up my bacula backup.
> >> I'm using Bacula 1.36.3 on Debian with MySQL 4.1.15 on machine 2x1.4GHz,
> >> 2Gb RAM, 2x80Gb HDD RAID1.
> >> Network connection is:
> >>
> >> FD Files Written: 515,401
> >>
> >> SD Files Written: 515,401
> >>
> >> FD Bytes Written: 232,278,974,474
> >>
> >> SD Bytes Written: 232,353,930,829
> >>
> >> Rate: 11186.1 KB/s
> >>
> >> It took about 6 hours to backup it..
> >
> > are you using spooling ?
> >
> > Florian
>
> I don't use spooling now, i tried this but the backup time was similar...
I agree with Florian, your speed looks quite good, probably better than what
most of us are getting.
- It is possible you can squeeze a bit more speed by upgrading to 1.38.4 for
several reasons:
1. It uses larger network buffer sizes.
2. It updates the database File records in one SQL statement rather than two.
- You should also ensure that you have an SQL index on JobId in the File
table. The manual discusses how to verify this if you are unsure.
- Make sure you are communicating to MySQL using a socket rather than TCP/IP
if your MySQL server is on the same machine as the Director.
- Move your MySQL server to another machine or if you have plenty of CPU
power, at least ensure that its databases are located on a dedicated fast
disk, and that you have it configured to use lots of memory ...
- If you want more speed, how about doing a bit of performance testing?
1. You can look at the #defines at the bottom of the src/version.h file. They
allow you to disable parts of the backup so that you can time the different
parts. This allows focusing on where the bottleneck is.
2. Someone should do a gprof on the Bacula components at some point to figure
out where the various daemon bottlenecks are. I leave this to you if you are
interested ...
--
Best regards,
Kern
(">
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