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

[Cameron Paine]

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.

If, as you seem to suggest, the Orca process is running on
a different machine, I'm guessing that your engineers aren't
thinking clearly.

FWIW I use a 280R with 1 gig ethernet as our NBU master and
media server. I've not seen the SE process have any adverse
effect on the performance of that system. And we looked
*really* hard at it when we first started running SE just on
12 months ago.

Cameron