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Remove the separate 'stats buffer' process, letting backend stats messages

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be delivered directly to the collector process.  The extra process context
swaps required to transfer data through the buffer process seem to outweigh
any value the buffering might have.  Per recent discussion and tests.
I modified Bruce's draft patch to use poll() rather than select() where
available (this makes a noticeable difference on my system), and fixed
up the EXEC_BACKEND case.
This commit is contained in:
Tom Lane
2006-06-29 20:00:08 +00:00
parent cd4609e2a4
commit 51e400c9c6
4 changed files with 192 additions and 567 deletions
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3
src/include/pgstat.h
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@ -5,7 +5,7 @@
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.47 2006/06/19 01:51:21 tgl Exp $
* $PostgreSQL: pgsql/src/include/pgstat.h,v 1.48 2006/06/29 20:00:08 tgl Exp $
* ----------
*/
#ifndef PGSTAT_H
@ -362,7 +362,6 @@ extern int pgstat_start(void);
extern void pgstat_reset_all(void);
#ifdef EXEC_BACKEND
extern void PgstatBufferMain(int argc, char *argv[]);
extern void PgstatCollectorMain(int argc, char *argv[]);
#endif