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Add lock_timeout configuration parameter.

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This GUC allows limiting the time spent waiting to acquire any one
heavyweight lock.

In support of this, improve the recently-added timeout infrastructure
to permit efficiently enabling or disabling multiple timeouts at once.
That reduces the performance hit from turning on lock_timeout, though
it's still not zero.

Zoltán Böszörményi, reviewed by Tom Lane,
Stephen Frost, and Hari Babu
This commit is contained in:
Tom Lane
2013-03-16 23:22:17 -04:00
parent d2bef5f7db
commit d43837d030
16 changed files with 511 additions and 116 deletions
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5
src/bin/pg_dump/pg_backup_archiver.c
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@ -2592,9 +2592,12 @@ _tocEntryIsACL(TocEntry *te)
static void
_doSetFixedOutputState(ArchiveHandle *AH)
{
/* Disable statement_timeout in archive for pg_restore/psql */
/* Disable statement_timeout since restore is probably slow */
ahprintf(AH, "SET statement_timeout = 0;\n");
/* Likewise for lock_timeout */
ahprintf(AH, "SET lock_timeout = 0;\n");
/* Select the correct character set encoding */
ahprintf(AH, "SET client_encoding = '%s';\n",
pg_encoding_to_char(AH->public.encoding));