Re: patch: tsearch - some memory diet
Robert Haas <robertmhaas@gmail.com>
From: Robert Haas <robertmhaas@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Teodor Sigaev <teodor@sigaev.ru>, Pavel Stehule <pavel.stehule@gmail.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2010-10-06T23:44:46Z
Lists: pgsql-hackers
On Wed, Oct 6, 2010 at 7:36 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote: > Teodor Sigaev <teodor@sigaev.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. Nice. What was the overall effect on memory consumption? -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company