I definitely don't have updated installed on the box. I'm monitoring it the
moment and it seems BackupPC_nightly is running while performing a backup of
2 servers, it must run run backuppc_nightly for the first few hours every
night.
Output from top, CPU usage is in the 9th column.
12269 backuppc 20 0 117m 114m 2364 D 55 2.9 2:47.40
BackupPC_dump
12270 backuppc 20 0 226m 216m 2356 D 35 5.5 1:22.66
BackupPC_dump
13538 backuppc 20 0 185m 176m 1324 D 29 4.5 0:25.90
BackupPC_dump
12264 backuppc 20 0 11116 8076 2060 D 10 0.2 0:22.06
BackupPC_nightl
12262 backuppc 20 0 11136 8092 2060 D 5 0.2 0:25.46
BackupPC_nightl
12267 backuppc 20 0 11160 8112 2060 D 4 0.2 0:23.40
BackupPC_nightl
13109 backuppc 20 0 106m 101m 1324 S 3 2.6 0:52.04
BackupPC_dump
12268 backuppc 20 0 11024 8088 2060 D 2 0.2 0:23.84
BackupPC_nightl
12261 backuppc 20 0 11148 8120 2072 D 1 0.2 0:24.46
BackupPC_nightl
12265 backuppc 20 0 11136 8088 2060 D 1 0.2 0:23.90
BackupPC_nightl
10 root 15 -5 0 0 0 S 1 0.0 38:30.83
ksoftirqd/2
182 root 15 -5 0 0 0 S 1 0.0 16:12.28
kblockd/0
351 root 15 -5 0 0 0 S 1 0.0 1296:21
kswapd0
12263 backuppc 20 0 11132 8112 2060 D 1 0.2 0:21.20
BackupPC_nightl
12266 backuppc 20 0 11024 8084 2060 D 1 0.2 0:24.10
BackupPC_nightl
On Tue, Jul 7, 2009 at 6:20 PM, Leen Besselink <l...@consolejunky.net>wrote:
> Stephen Vaughan wrote:
> > The box isn't used for anything else..I can keep an eye on it tonight
> > and see whats causing the load in those first few hours..
> >
> > On Tue, Jul 7, 2009 at 1:57 PM, Les Mikesell <lesmikes...@gmail.com
> > <mailto:lesmikes...@gmail.com>> wrote:
> >
> > Stephen Vaughan wrote:
> > > I'm only running 2 concurrent backups. The disk is/was mounted with
> > > noatime,data=journal. I've changed this to
> > noatime,nodiratime,data=writeback
> > >
> > > I've also just enabled the checksum-seed option in rsyncargs. I
> have
> > > munin running on the box, it looks as though there is a bit of
> > iowait on
> > > the cpu, iostat doesn't look too bad to me, but I might be reading
> it
> > > wrong..
> > >
> > > I've attached some graphs which might shed some light..
> >
> > The only thing that seems slightly strange in the graphs is the load
> > average
> > going to 12 as the backups start and staying there a couple of
> > hours. Normally
> > that's the average number of 'other' processes that are waiting for
> > CPU but
> > otherwise runnable (i.e. not themselves blocked on i/o). Do you
> > have other
> > things running that should be active at this time? Idle daemons
> > wouldn't count
> > because they should be blocked waiting for input.
>
> The load and waiting on I/O is definitly suspicious.
>
> Maybe something like a cronjob running updatedb for locate ?
>
> /etc/updatedb.conf holds the paths that should be excluded if you
> don't want to turn it off completely.
>
> As they are both doing a lot of disk activity it will slow down rsync.
>
> I suggest having a good look at syslog looking for CRON and/or check:
> /etc/crontab
> /etc/cron.d/
> /etc/cron.hourly/
> /etc/cron.daily/
> /etc/cron.weekly/
> /etc/cron.monthly/
> /var/spool/cron/
>
>
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>
--
Best Regards,
Stephen
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