Tatsuo Ishii <[EMAIL PROTECTED]> writes:
>>> Interesting. We (some Japanese companies including SRA OSS,
>>> Inc. Japan) did some PG scalability testing using a Unisys's big 16
>>> (physical) CPU machine and found PG scales up to 8 CPUs. However
>>> beyond 8 CPU PG does not scale anymore. The result can be viewed at
>>> "OSS iPedia" web site (http://ossipedia.ipa.go.jp). Our conclusion was
>>> PG has a serious lock contention problem in the environment by
>>> analyzing the oprofile result.

Can you retry this test case using CVS tip?  I'm curious to see if
having partitioned the BufMappingLock helps ...

                        regards, tom lane

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