| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Richard J Kuhns <rjk(at)grauel(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>, Philip Warner <pjw(at)rhyme(dot)com(dot)au>, Justin Clift <aa2(at)bigpond(dot)net(dot)au>, The Hermit Hacker <scrappy(at)hub(dot)org>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Performance monitor |
| Date: | 2001-03-08 19:46:03 |
| Message-ID: | 200103081946.OAA15563@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> Bruce Momjian writes:
> ...
> > The problem I see with the shared memory idea is that some of the
> > information needed may be quite large. For example, query strings can
> > be very long. Do we just allocate 512 bytes and clip off the rest. And
> > as I add more info, I need more shared memory per backend. I just liked
> > the file system dump solution because I could modify it pretty easily,
> > and because the info only appears when you click on the process, it
> > doesn't happen often.
> >
> Have you thought about using a named pipe? They've been around for quite a
> while, and should (he said with a :-)) be available on most-if-not-all
> currently supported systems.
Nifty idea.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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