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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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10
src/backend/storage/buffer/bufmgr.c
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@ -142,22 +142,22 @@ bool track_io_timing = false;
* for buffers not belonging to tablespaces that have their
* effective_io_concurrency parameter set.
*/
int effective_io_concurrency = 0;
int effective_io_concurrency = DEFAULT_EFFECTIVE_IO_CONCURRENCY;
/*
* Like effective_io_concurrency, but used by maintenance code paths that might
* benefit from a higher setting because they work on behalf of many sessions.
* Overridden by the tablespace setting of the same name.
*/
int maintenance_io_concurrency = 0;
int maintenance_io_concurrency = DEFAULT_MAINTENANCE_IO_CONCURRENCY;
/*
* GUC variables about triggering kernel writeback for buffers written; OS
* dependent defaults are set via the GUC mechanism.
*/
int checkpoint_flush_after = 0;
int bgwriter_flush_after = 0;
int backend_flush_after = 0;
int checkpoint_flush_after = DEFAULT_CHECKPOINT_FLUSH_AFTER;
int bgwriter_flush_after = DEFAULT_BGWRITER_FLUSH_AFTER;
int backend_flush_after = DEFAULT_BACKEND_FLUSH_AFTER;
/* local state for StartBufferIO and related functions */
static BufferDesc *InProgressBuf = NULL;