[Orca-users] I/O contention with orca se process?

[Blair Zajac]

Cameron Paine wrote:
> 
> Joel wrote:
> >
> > Our "super-smart" (ha) engineering team seems to think that
> > there is a lot
> > of I/O contention on our Veritas Netbackup servers because I
> > have started
> > running se for orca on those servers. Does this make any
> > sense? ...
> 
> Smells like drivel. Theoretical sanity check: SE writes,
> at most, a few KB every five minutes. Your Orca process--the
> one that maintains the RRD files--will typically read that
> data once every 5 minutes. It also does a stat before it
> reads the file. That doesn't seem like it would lead to a
> contention situation to me.

I definitely agree.  Have them run top and watch the SE process.
Unless it's watching a busy web server and processing its
access_log, there's not much it does except sleep.

Best,
Blair

-- 
Blair Zajac <blair at orcaware.com>
Plots of your system's performance - http://www.orcaware.com/orca/