| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Bernd Helmle <mailings(at)oopsware(dot)de>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Greg Smith <greg(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [PATCH] dtrace probes for memory manager |
| Date: | 2009-12-11 20:50:27 |
| Message-ID: | 23515.1260564627@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM> writes:
> Tom Lane pe v p 11. 12. 2009 v 15:11 -0500:
>> If we go this route it would be nice to think about making a facility
>> that has some usefulness for non-DTrace platforms too.
> Do you mean general facility for switching memory allocator?
No, I was thinking of some sort of memory allocation stats collection
that doesn't depend on DTrace. It's amazing to me that we've never
gone back and improved on the original quick-and-dirty
MemoryContextStats mechanism. I certainly find myself using that a
lot for issues like tracking down memory leaks. While palloc has a lot
of advantages, the fact that you can't easily plug in a debug-friendly
substitute malloc package is not one of them :-(
regards, tom lane
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