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Give a better error message when trying to change 

"effective_io_concurrency" on systems without posix_fadvise().
This commit is contained in:
Bruce Momjian 2009-04-02 19:57:19 +00:00
parent 2faa8e2ac1
commit 3b07182e61
1 changed files with 8 additions and 2 deletions
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10
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>. * Written by Peter Eisentraut <peter_e@gmx.net>.
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.498 2009/04/02 03:51:43 tgl Exp $ * $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.499 2009/04/02 19:57:19 momjian Exp $
* *
*-------------------------------------------------------------------- *--------------------------------------------------------------------
*/ */
@ -1713,7 +1713,13 @@ static struct config_int ConfigureNamesInt[] =
}, },
{ {
{"effective_io_concurrency", PGC_USERSET, RESOURCES, {"effective_io_concurrency",
#ifdef USE_PREFETCH
PGC_USERSET,
#else
PGC_INTERNAL,
#endif
RESOURCES,
gettext_noop("Number of simultaneous requests that can be handled efficiently by the disk subsystem."), gettext_noop("Number of simultaneous requests that can be handled efficiently by the disk subsystem."),
gettext_noop("For RAID arrays, this should be approximately the number of drive spindles in the array.") gettext_noop("For RAID arrays, this should be approximately the number of drive spindles in the array.")
}, },