From: Andres Freund Date: Thu, 24 Sep 2015 12:53:33 +0000 (+0200) Subject: Lower *_freeze_max_age minimum values. X-Git-Tag: REL9_1_19~25 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ff090bbb76b24d8070a8c1a5f434f912d908ec19;p=postgresql Lower *_freeze_max_age minimum values. The old minimum values are rather large, making it time consuming to test related behaviour. Additionally the current limits, especially for multixacts, can be problematic in space-constrained systems. 10000000 multixacts can contain a lot of members. Since there's no good reason for the current limits, lower them a good bit. Setting them to 0 would be a bad idea, triggering endless vacuums, so still retain a limit. While at it fix autovacuum_multixact_freeze_max_age to refer to multixact.c instead of varsup.c. Reviewed-By: Robert Haas Discussion: CA+TgmoYmQPHcrc3GSs7vwvrbTkbcGD9Gik=OztbDGGrovkkEzQ@mail.gmail.com Backpatch: 9.0 (in parts) --- diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index 00a635fff2..b9b6b2053f 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -2248,7 +2248,7 @@ static struct config_int ConfigureNamesInt[] = }, &autovacuum_freeze_max_age, /* see pg_resetxlog if you change the upper-limit value */ - 200000000, 100000000, 2000000000, + 200000000, 100000, 2000000000, NULL, NULL, NULL }, {