Ryan,
I'm not sure what you mean, or how to test for this. What gets
written to the catalog, when does it get written, and how does that
affect the rest of the job?
Thanks,
Shon
btw - Have you healed since we last corresponded?
On Nov 6, 2007 9:10 PM, Ryan Novosielski <[EMAIL PROTECTED]> wrote:
> It is quite possible that your catalog database cannot keep up with your
> backups. I'd start there.
>
> ...... Original Message .......
>
> On Tue, 06 Nov 2007 11:17:10 -0500 "Shon Stephens"
> <[EMAIL PROTECTED]> wrote:
> >I was just wondering what the factors limiting the speed with which
> >Bacula writes to tape are? I performed some testing on my LTO-3 drive
> >and found that the theoretical limit is 276G/hr, while my backups are
> >writing at around 174G/hr. The client is the Bacula system itself. The
> >FD is reading files from a filesystem that resides on a SATAbeast FCA
> >attached storage array. The files are Oracle dumps, and the options I
> >have specified are:
> >
> > signature = MD5
> > verify = pins5
> > sparse = yes
> > noatime = yes
> >
> >The only compression I am using is the tape devices compression, which
> >at 2:1 compression should be over 500G/hr. I wrote a 3.4T job in
> >19h30m. At what seems to be a compression of 1.5:1. This should still
> >be faster than the 174G/hr its acheiving.
> >
> >Would using MD5 signatures slow this up?
> >Are any of these settings tunable and do they affect Bacula performance?
> >
> >mt-back4.director Version: 2.0.3 (06 March 2007) i386-pc-solaris2.8 solaris
> >5.8
> >Daemon started 05-Nov-07 07:07, 5 Jobs run since started.
> > Heap: bytes=72,064 max_bytes=74,700 bufs=376 max_bufs=397
> >
> >
> >Thanks,
> >Shon
> >
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