| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Chuck McDevitt <cmcdevitt(at)greenplum(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Multiple sorts in a query |
| Date: | 2009-05-19 17:01:32 |
| Message-ID: | 1242752492.27960.9.camel@ebony.2ndQuadrant |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Tue, 2009-05-19 at 09:33 -0700, Chuck McDevitt wrote:
> > Is it possible that Solaris's default malloc isn't appropriate for
> > repeated use in complex queries that use multiple sorts?
> > http://developers.sun.com/solaris/articles/multiproc/multiproc.html
> > and recent OpenSolaris bug reports.
>
> Solaris default malloc always uses sbrk(), and never ever tried to
> reduce the sbrk point.
>
> If you want a malloc that uses mmap, there is an non-default malloc
> that does that (libumem or something?)
OK, thanks Chuck. Doesn't sound good.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
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