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Improve logging of checkpoints. Patch by Greg Smith, worked over

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by Heikki and a little bit by me.
This commit is contained in:
Tom Lane
2007-06-30 19:12:02 +00:00
parent 2910ccefb4
commit 9fc25c0511
7 changed files with 246 additions and 111 deletions
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37
src/include/access/xlog.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.79 2007/06/28 00:02:39 tgl Exp $
* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.80 2007/06/30 19:12:02 tgl Exp $
*/
#ifndef XLOG_H
#define XLOG_H
@@ -16,6 +16,7 @@
#include "lib/stringinfo.h"
#include "storage/buf.h"
#include "utils/pg_crc.h"
#include "utils/timestamp.h"
/*
@@ -150,6 +151,7 @@ extern char *XLogArchiveCommand;
extern int XLogArchiveTimeout;
extern char *XLOG_sync_method;
extern const char XLOG_sync_method_default[];
extern bool log_checkpoints;
#define XLogArchivingActive() (XLogArchiveCommand[0] != '\0')
@@ -157,12 +159,39 @@ extern const char XLOG_sync_method_default[];
extern bool XLOG_DEBUG;
#endif
/* OR-able flags for RequestCheckpoint, CreateCheckPoint and subsidiaries */
/*
* OR-able request flag bits for checkpoints. The "cause" bits are used only
* for logging purposes. Note: the flags must be defined so that it's
* sensible to OR together request flags arising from different requestors.
*/
/* These directly affect the behavior of CreateCheckPoint and subsidiaries */
#define CHECKPOINT_IS_SHUTDOWN 0x0001 /* Checkpoint is for shutdown */
#define CHECKPOINT_IMMEDIATE 0x0002 /* Do it without delays */
#define CHECKPOINT_FORCE 0x0004 /* Force even if no activity */
#define CHECKPOINT_WARNONTIME 0x0008 /* Enable CheckPointWarning */
#define CHECKPOINT_WAIT 0x0010 /* Wait for completion */
/* These are important to RequestCheckpoint */
#define CHECKPOINT_WAIT 0x0008 /* Wait for completion */
/* These indicate the cause of a checkpoint request */
#define CHECKPOINT_CAUSE_XLOG 0x0010 /* XLOG consumption */
#define CHECKPOINT_CAUSE_TIME 0x0020 /* Elapsed time */
/* Checkpoint statistics */
typedef struct CheckpointStatsData
{
TimestampTz ckpt_start_t; /* start of checkpoint */
TimestampTz ckpt_write_t; /* start of flushing buffers */
TimestampTz ckpt_sync_t; /* start of fsyncs */
TimestampTz ckpt_sync_end_t; /* end of fsyncs */
TimestampTz ckpt_end_t; /* end of checkpoint */
int ckpt_bufs_written; /* # of buffers written */
int ckpt_segs_added; /* # of new xlog segments created */
int ckpt_segs_removed; /* # of xlog segments deleted */
int ckpt_segs_recycled; /* # of xlog segments recycled */
} CheckpointStatsData;
extern CheckpointStatsData CheckpointStats;
extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info, XLogRecData *rdata);