Re: data on devel code perf dip - Mailing list pgsql-hackers

From Mark Wong
Subject Re: data on devel code perf dip
Date
Msg-id 200508162307.j7GN71jA007197@smtp.osdl.org
Whole thread Raw
In response to Re: data on devel code perf dip  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: data on devel code perf dip  (Mary Edie Meredith <maryedie@osdl.org>)
List pgsql-hackers
On Tue, 16 Aug 2005 18:53:55 -0400
Tom Lane <tgl@sss.pgh.pa.us> wrote:

> Mary Edie Meredith <maryedie@osdl.org> writes:
> > I'm still very concerned about what I'm seeing in the oprofile:
> > namely:  .CreateLWLocks is the second highest entry for postgres.
> > http://developer.osdl.org/maryedie/DBT2_PGSQL/59/oprofile.txt
> 
> This says there's something wrong with your oprofile setup.
> CreateLWLocks is run *once* at postmaster startup, and it doesn't
> take all that long.  Check to see if maybe your executables are
> out of sync with what oprofile is looking at?

It is a POWER5 platform, if that has anything to do with it.  It
certainly doesn't look sane, but for user apps oprofile is supposed to
be getting the symbols directly from the binaries its using.  I'm
inclined to blame the platform support. ;)

Mark


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