I had a similar experience on OPS when we tried with releasable locks. What is the platform? What kind of interconnect do you have?
On 2003.07.10 12:44, K Gopalakrishnan wrote:
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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