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.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com




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