Tom Lane wrote:
> 
> "Mikheev, Vadim" <[EMAIL PROTECTED]> writes:
> > access/heap/hio.c:RelationGetBufferForRelation() uses LockPage
> > (ie lmgr -> semops) to syncronize table extending.
> 
> But no semop should occur unless somebody is actually blocking on
> the lock.  John's trace only showed one active backend, so I figured
> that there shouldn't be any blockage.

Keep in mind that I only sent a sample of trace data to show the kind of
things I was seeing, not the entire process from end-to-end.

-- 
John Coers            Intrinsity, Inc.        
[EMAIL PROTECTED]  Austin, Texas

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