Re: Problems with inconsistant query performance.

On Thu, Sep 28, 2006 at 11:28:43AM -0400, Bill Moran wrote:
> In response to Matthew Schumacher <matt(dot)s(at)aptalaska(dot)net>:
> >
> > What I really need is a way to profile my proc when it runs slow so that
> > I can resolve which of the queries is really slow. Anyone with an idea
> > on how to do this?
>
> You could turn on statement logging and duration logging. This would
> give you a record of when things run and how long they take. A little
> work analyzing should show you which queries are running when your
> favorite query slows down.

By default, that doesn't help you debug what's happening inside a
function, because you only get the call to the function. I don't know if
you can increase verbosity to combat that.

Something else to consider is that gettimeofday() on some platforms is
painfully slow, which could completely skew all your numbers.
--
Jim Nasby jim(at)nasby(dot)net
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)