| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Daniel Åkerud <zilch(at)home(dot)se>, PostgreSQL-general <pgsql-general(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Multiple Indexing, performance impact |
| Date: | 2001-06-22 22:02:45 |
| Message-ID: | 6081.993247365@sss.pgh.pa.us |
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| Lists: | pgsql-general pgsql-hackers |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>> This does remind me that I'd been thinking of suggesting that we
>> raise the default -B to something more reasonable, maybe 1000 or so
>> (yielding an 8-meg-plus shared memory area).
> BSD/OS has a 4MB max but we document how to increase it by recompiling
> the kernel.
Hmm. Anyone like the idea of a platform-specific default established
by configure? We could set it in the template file on platforms where
the default SHMMAX is too small to allow 1000 buffers.
regards, tom lane
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