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Complete TODO item:

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* Remove wal_files postgresql.conf option because WAL files are
	  now recycled
This commit is contained in:
Bruce Momjian
2002-08-30 16:50:50 +00:00
parent fefb57ce74
commit 63653f7ffa
5 changed files with 18 additions and 56 deletions
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24
src/backend/access/transam/xlog.c
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.102 2002/08/17 15:12:06 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.103 2002/08/30 16:50:50 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -87,7 +87,6 @@
/* User-settable parameters */
int CheckPointSegments = 3;
int XLOGbuffers = 8;
int XLOGfiles = 0; /* # of files to preallocate during ckpt */
int XLOG_DEBUG = 0;
char *XLOG_sync_method = NULL;
const char XLOG_sync_method_default[] = DEFAULT_SYNC_METHOD_STR;
@@ -97,7 +96,7 @@ char XLOG_archive_dir[MAXPGPATH]; /* null string means
/*
* XLOGfileslop is used in the code as the allowed "fuzz" in the number of
* preallocated XLOG segments --- we try to have at least XLOGfiles advance
* segments but no more than XLOGfiles+XLOGfileslop segments. This could
* segments but no more than XLOGfileslop segments. This could
* be made a separate GUC variable, but at present I think it's sufficient
* to hardwire it as 2*CheckPointSegments+1. Under normal conditions, a
* checkpoint will free no more than 2*CheckPointSegments log segments, and
@@ -1422,7 +1421,7 @@ XLogFileInit(uint32 log, uint32 seg,
* ours to pre-create a future log segment.
*/
if (!InstallXLogFileSegment(log, seg, tmppath,
*use_existent, XLOGfiles + XLOGfileslop,
*use_existent, XLOGfileslop,
use_lock))
{
/* No need for any more future segments... */
@@ -1568,20 +1567,9 @@ PreallocXlogFiles(XLogRecPtr endptr)
uint32 _logSeg;
int lf;
bool use_existent;
int i;
XLByteToPrevSeg(endptr, _logId, _logSeg);
if (XLOGfiles > 0)
{
for (i = 1; i <= XLOGfiles; i++)
{
NextLogSeg(_logId, _logSeg);
use_existent = true;
lf = XLogFileInit(_logId, _logSeg, &use_existent, true);
close(lf);
}
}
else if ((endptr.xrecoff - 1) % XLogSegSize >=
if ((endptr.xrecoff - 1) % XLogSegSize >=
(uint32) (0.75 * XLogSegSize))
{
NextLogSeg(_logId, _logSeg);
@@ -1635,11 +1623,11 @@ MoveOfflineLogs(uint32 log, uint32 seg, XLogRecPtr endptr)
/*
* Before deleting the file, see if it can be recycled as
* a future log segment. We allow recycling segments up
* to XLOGfiles + XLOGfileslop segments beyond the current
* to XLOGfileslop segments beyond the current
* XLOG location.
*/
if (InstallXLogFileSegment(endlogId, endlogSeg, path,
true, XLOGfiles + XLOGfileslop,
true, XLOGfileslop,
true))
{
elog(LOG, "recycled transaction log file %s",

7
src/backend/utils/misc/guc.c
View File

@@ -5,7 +5,7 @@
* command, configuration file, and command line options.
* See src/backend/utils/misc/README for more information.
*
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.87 2002/08/29 21:02:12 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.88 2002/08/30 16:50:50 momjian Exp $
*
* Copyright 2000 by PostgreSQL Global Development Group
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -640,11 +640,6 @@ static struct config_int
8, 4, INT_MAX, NULL, NULL
},
{
{ "wal_files", PGC_SIGHUP }, &XLOGfiles,
0, 0, 64, NULL, NULL
},
{
{ "wal_debug", PGC_SUSET }, &XLOG_DEBUG,
0, 0, 16, NULL, NULL