| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Jan Wieck <JanWieck(at)Yahoo(dot)com> |
| Cc: | Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Peter Childs <Blue(dot)Dragon(at)blueyonder(dot)co(dot)uk>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [GENERAL] 7.4Beta |
| Date: | 2003-08-15 18:49:41 |
| Message-ID: | 20020.1060973381@sss.pgh.pa.us |
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| Lists: | pgsql-general pgsql-hackers |
Jan Wieck <JanWieck(at)Yahoo(dot)com> writes:
> I'm thinking instead of a way to "cache" entire executors for this. Each
> SPI plan used during a transaction would need it's own executor, and I
> don't know offhand what type and how much resources an executor requires
> (I think it's only some memory that get's initialized and the VFD's
> opened).
Hmm. This is probably more feasible now than it would have been a year
ago, because I did some cleanup work to ensure that executor state is
localized into a specific memory context. I'm not certain about the
amount of overhead either, but it's surely worth a try.
regards, tom lane
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