Matt,
What are jumbo frames? Are these assigning private
network IPs to cluster_interconnects parameter?
-Ravi.
- Matthew Zito <[EMAIL PROTECTED]> wrote:
>
> And are you using jumbo frames on your interconnect?
> That can make a
> significant contribution to reducing overhead from a
> system standpoint.
>
> Thanks,
> Matt
>
> --
> Matthew Zito
> GridApp Systems
> Email: [EMAIL PROTECTED]
> Cell: 646-220-3551
> Phone: 212-358-8211 x 359
> http://www.gridapp.com
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> > Behalf Of K Gopalakrishnan
> > Sent: Thursday, July 10, 2003 11:44 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject: RE: RAC system Calls
> >
> >
> > Ravi:
> >
> > Do you have a statspack report? I would like to
> see that. But
> > in any case, 45% kernel is just too much?
> >
> > BTW have you verified the private interconnect is
> used
> > for cache fusion transfer.. Make sure the cache
> fusion
> > is not going thru the public network.
> >
> >
> >
> > Best Regards,
> > K Gopalakrishnan
> >
> >
> >
> >
> > -----Original Message-----
> > Ravi Kulkarni
> > Sent: Thursday, July 10, 2003 9:30 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Hello List,
> >
> > We are running Benchmark tests on Solaris 2-Node
> RAC.
> > Consistently noticed the following :
> > - Very high Kernel usage (averaging 45%) on TOP
> > - Statspack has "IPC Send Completion sync" waits
> (70%
> > Total ela time)
> > - On trussing top process, found Oracle to be
> issuing
> > huge number of "times" system calls in addition to
>
> > read/writes(which I think are select/inserts). Has
> anyone
> > noticed this in your environment. I am guessing
> these to be
> > inter-instance pings, but could not get any hits
> in
> > Doc/Metalink to confirm this. "times" call is
> clocking lot of
> > CPU. Is this normal ?
> > Any pointers would be helpful ? If this is out of
> > context, is there a separate list for RAC?
> >
> > Thanks,
> > Ravi.
> >
> >
> >
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> > Author: Ravi Kulkarni
> > INET: [EMAIL PROTECTED]
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Received on Thu Jul 10 2003 - 13:56:26 CDT