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Re: patch: tsearch - some memory diet

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Teodor Sigaev <teodor(at)sigaev(dot)ru>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: patch: tsearch - some memory diet
Date: 2010-10-06 23:36:42
Message-ID: 15008.1286408202@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Teodor Sigaev <teodor(at)sigaev(dot)ru> writes:
>> on 32bit from 27MB (3399 blocks) to 13MB (1564 blocks)
>> on 64bit from 55MB to cca 27MB.

> Good results. But, I think, there are more places in ispell to use hold_memory():
> - affixes and affix tree
> - regis (REGex for ISpell, regis.c)

I fixed the affix stuff as much as possible (some of the structures are
re-palloc'd so they can't easily be included).  It appears that hacking
up regis, or any of the remaining allocations, wouldn't be worth the
trouble.  Using the Czech dictionary on a 32-bit machine, I see about
16MB going through the compacted-alloc code and only about 375K going
through regular small palloc's.

			regards, tom lane

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Subject: Re: patch: tsearch - some memory diet
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