From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Reduce default value of max_prepared_transactions from 50 to 5. |
Date: | 2005-08-29 21:38:18 |
Message-ID: | 20050829213818.D1B4ED7E37@svr1.postgresql.org |
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Lists: | pgsql-committers |
Log Message:
-----------
Reduce default value of max_prepared_transactions from 50 to 5. This
saves nearly 700kB in the default shared memory segment size, which seems
worthwhile, and it is a feature that many users won't use anyway. Per
Heikki's argument, there is no point in a compromise value --- those who
are using 2PC at all will probably want it at least equal to max_connections.
But we can't set it to zero by default without breaking the prepared_xacts
regression test.
Modified Files:
--------------
pgsql/doc/src/sgml:
runtime.sgml (r1.348 -> r1.349)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/runtime.sgml.diff?r1=1.348&r2=1.349)
pgsql/src/backend/access/transam:
twophase.c (r1.10 -> r1.11)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/twophase.c.diff?r1=1.10&r2=1.11)
pgsql/src/backend/utils/misc:
guc.c (r1.286 -> r1.287)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.286&r2=1.287)
postgresql.conf.sample (r1.161 -> r1.162)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample.diff?r1=1.161&r2=1.162)
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