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Give a better error message when trying to change
"effective_io_concurrency" on systems without posix_fadvise().
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parent
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@ -10,7 +10,7 @@
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* Written by Peter Eisentraut <peter_e@gmx.net>.
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.498 2009/04/02 03:51:43 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.499 2009/04/02 19:57:19 momjian Exp $
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*
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*--------------------------------------------------------------------
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*/
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@ -1713,7 +1713,13 @@ static struct config_int ConfigureNamesInt[] =
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},
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{
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{"effective_io_concurrency", PGC_USERSET, RESOURCES,
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{"effective_io_concurrency",
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#ifdef USE_PREFETCH
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PGC_USERSET,
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#else
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PGC_INTERNAL,
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#endif
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RESOURCES,
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gettext_noop("Number of simultaneous requests that can be handled efficiently by the disk subsystem."),
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gettext_noop("For RAID arrays, this should be approximately the number of drive spindles in the array.")
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},
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