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Re: User concurrency thresholding: where do I look?

From: "Simon Riggs" <simon(at)2ndquadrant(dot)com>
To: "Jignesh K(dot) Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM>
Cc: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>,"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 15:25:31
Message-ID: 1185463531.4190.72.camel@ebony.site (view raw or flat)
Thread:
Lists: pgsql-performance
On Thu, 2007-07-26 at 10:29 -0400, Jignesh K. Shah wrote:
> The count is only for a 10-second snapshot.. Plus remember there are 
> about 1000 users running so the connection  being profiled only gets 
> 0.01 of the period on CPU..  And the count is for that CONNECTION only.

Is that for one process, or all processes aggregated in some way?

>  CheckpointStartLock          Shared               6
>  CheckpointStartLock       Exclusive             102

That's definitely whacked. Surely we didn't start 102 checkpoints yet
attempt to commit 6 times?
   
-- 
  Simon Riggs
  EnterpriseDB  http://www.enterprisedb.com


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