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Re: User concurrency thresholding: where do I look?

From: Robert Lor <Robert(dot)Lor(at)Sun(dot)COM>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "Jignesh K(dot) Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-performance(at)postgresql(dot)org, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Subject: Re: User concurrency thresholding: where do I look?
Date: 2007-07-26 19:56:08
Message-ID: 46A8FC58.7060301@sun.com (view raw or flat)
Thread:
Lists: pgsql-performance
Tom Lane wrote:
> 
> That path would be taking CLogControlLock ... so you're off by at least
> one.  Compare the script to src/include/storage/lwlock.h.
> 

Indeed, the indexing was off by one due to the removal of 
BuffMappingLock in src/include/storage/lwlock.h between 8.1 and 8.2 
which was not updated in the DTrace script.

Thanks,
Robert


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