On Thu, 2005-11-17 at 15:19 +0100, Tarjei Huse wrote:
> On Thu, Nov 17, 2005 at 02:20:14PM +0100, Guus Houtzager wrote:
[...]
> > Let me guess: ext3 filesystem? If yes, you've just been hit by the "ext3
> > doesn't scale for large number of files" problem. Use reiser or xfs.
> Wrong guess :-)
>
> The box runs XFS and reiserfs. It's a Suse 8.2 box that has been upgraded to
> 9.2.
Hm. Strange. The slowdown didn't appear just after you upgraded the box
to 9.2 but later? Just to be sure: your /var/lib/backuppc isn't on a
broken raid volume? Or dma has been disabled on your disks?
What hardware are you running on the backuppc server?
> > > Versions:
> > > Rsync: 2.6.3 (on the client)
> > > File::RsyncD (on server) : 0.52
> > > BackupPC 2.1.1
> >
> > If you use ext3, I'm rather curious what kernel you're running, because
> > ext3 is supposed to have become better at this in recent times. Although
> > I do not know if the btree patches are included in the vanilla kernels.
> Well, sorry, no ext3 :-)
>
> But: Thanks a bundle for answering!
>
> I'm quite at loss at what is happening on the server. It seems to download
> quite a lot of files that shouldn't have been changed. What is the simplest
> way to see what files have been downloaded to the server? If it just to zgrep
> the Xferlog for create ?
I would run BackupPC_dump for a known slow host manually with the -v
flag, so you can see what's going on. If that doesn't provide enough
info, try to strace -p the process and see what's going on.
I can think of 2 problems which can cause what you're seeing:
1. you run out of memory with the rsync filelist, which makes the server
start to swap and after that everything goes horribly slow.
2. something is wrong with the filesystem.
> Kind regards
> Tarjei
Hth,
--
Guus Houtzager Email: [EMAIL PROTECTED]
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Early to rise, early to bed, makes a man healthy, wealthy and dead.
--Rincewind, The Light Fantastic
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