| From: | Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Chuck McDevitt <cmcdevitt(at)greenplum(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Multiple sorts in a query |
| Date: | 2009-05-19 20:19:54 |
| Message-ID: | 1242764394.1252.24.camel@localhost |
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| Lists: | pgsql-hackers |
Chuck McDevitt píše v út 19. 05. 2009 v 09:33 -0700:
>
> 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?)
>
There are severals memory allocator on Solaris. You can choose what you
need. See
mapalloc (it uses mmap insted of srbk)
mtmalloc (optimized fro multi threaded apps)
mumem_alloc
watchmalloc
bsdmalloc
maybe more.
What I heart is that standard malloc is not good, but it is still here
for compatibility reason with old application which depends on some
functionality.
Zdenek
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