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Home -> Community -> Mailing Lists -> Oracle-L -> 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: K Gopalakrishnan
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services ---------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Thu Jul 10 2003 - 10:50:51 CDT
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