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Clean up some inconsistencies with GUC declarations

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This is similar to 7d25958, and this commit takes care of all the
remaining inconsistencies between the initial value used in the C
variable associated to a GUC and its default value stored in the GUC
tables (as of pg_settings.boot_val).

Some of the initial values of the GUCs updated rely on a compile-time
default.  These are refactored so as the GUC table and its C declaration
use the same values.  This makes everything consistent with other
places, backend_flush_after, bgwriter_flush_after, port,
checkpoint_flush_after doing so already, for example.

Extracted from a larger patch by Peter Smith.  The spots updated in the
modules are from me.

Author: Peter Smith, Michael Paquier
Reviewed-by: Nathan Bossart, Tom Lane, Justin Pryzby
Discussion: https://postgr.es/m/CAHut+PtHE0XSfjjRQ6D4v7+dqzCw=d+1a64ujra4EX8aoc_Z+w@mail.gmail.com
This commit is contained in:
Michael Paquier
2022-10-31 12:44:48 +09:00
parent a9f8ca6005
commit d9d873bac6
19 changed files with 70 additions and 58 deletions
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9
src/include/storage/bufmgr.h
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@@ -69,6 +69,15 @@ extern PGDLLIMPORT bool zero_damaged_pages;
extern PGDLLIMPORT int bgwriter_lru_maxpages;
extern PGDLLIMPORT double bgwriter_lru_multiplier;
extern PGDLLIMPORT bool track_io_timing;
/* only applicable when prefetching is available */
#ifdef USE_PREFETCH
#define DEFAULT_EFFECTIVE_IO_CONCURRENCY 1
#define DEFAULT_MAINTENANCE_IO_CONCURRENCY 10
#else
#define DEFAULT_EFFECTIVE_IO_CONCURRENCY 0
#define DEFAULT_MAINTENANCE_IO_CONCURRENCY 0
#endif
extern PGDLLIMPORT int effective_io_concurrency;
extern PGDLLIMPORT int maintenance_io_concurrency;