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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2001-08-05 02:06:50 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2001-08-05 02:06:50 +0000 |
| commit | e8f1097361d9d2012c751d7e66cd4dd1b6d26ac6 (patch) | |
| tree | e507c9ebaf5da19a1234c0927485fb49c6c83c78 /src/include/pgstat.h | |
| parent | 5181d37e4c88c2b622fe54feb74845320e36c71e (diff) | |
| download | postgresql-e8f1097361d9d2012c751d7e66cd4dd1b6d26ac6.tar.gz postgresql-e8f1097361d9d2012c751d7e66cd4dd1b6d26ac6.zip | |
Endeavor to make pgstats buffer process (a) safe and (b) useful.
Make sure it exits immediately when collector process dies --- in old code,
buffer process would hang around and compete with the new buffer process
for packets. Make sure it doesn't block on writing the pipe when the
collector falls more than a pipeload behind. Avoid leaking pgstats FDs
into every backend.
Diffstat (limited to 'src/include/pgstat.h')
| -rw-r--r-- | src/include/pgstat.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/src/include/pgstat.h b/src/include/pgstat.h index fc9dc43326a..646cc27e770 100644 --- a/src/include/pgstat.h +++ b/src/include/pgstat.h @@ -5,7 +5,7 @@ * * Copyright (c) 2001, PostgreSQL Global Development Group * - * $Id: pgstat.h,v 1.5 2001/08/04 00:14:43 tgl Exp $ + * $Id: pgstat.h,v 1.6 2001/08/05 02:06:50 tgl Exp $ * ---------- */ #ifndef PGSTAT_H @@ -24,11 +24,11 @@ * ---------- */ #define PGSTAT_STAT_INTERVAL 500 /* How often to write the status */ - /* file in milliseconds. */ + /* file, in milliseconds. */ #define PGSTAT_DESTROY_DELAY 10000 /* How long to keep destroyed */ /* objects known to give delayed */ - /* UDP packets time to arrive */ + /* UDP packets time to arrive, */ /* in milliseconds. */ #define PGSTAT_DESTROY_COUNT (PGSTAT_DESTROY_DELAY \ @@ -36,7 +36,7 @@ /* ---------- - * How much of the actual query to send to the collector. + * How much of the actual query string to send to the collector. * ---------- */ #define PGSTAT_ACTIVITY_SIZE 256 @@ -56,13 +56,10 @@ #define PGSTAT_MTYPE_RESETCOUNTER 7 /* ---------- - * TODO - * For simplicity now, the number of messages buffered in - * pgstat_recvbuffer(). Should be an amount of bytes used - * for a gapless wraparound buffer. + * Amount of space reserved in pgstat_recvbuffer(). * ---------- */ -#define PGSTAT_RECVBUFFERSZ 1024 +#define PGSTAT_RECVBUFFERSZ ((int) (1024 * sizeof(PgStat_Msg))) /* ---------- @@ -338,6 +335,7 @@ extern bool pgstat_collect_blocklevel; extern int pgstat_init(void); extern int pgstat_start(int real_argc, char *real_argv[]); extern int pgstat_ispgstat(int pid); +extern void pgstat_close_sockets(void); extern void pgstat_beterm(int pid); /* ---------- |