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Some *very* major changes by darrenk@insightdist.com (Darren King)

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==========================================
What follows is a set of diffs that cleans up the usage of BLCKSZ.

As a side effect, the person compiling the code can change the
value of BLCKSZ _at_their_own_risk_.  By that, I mean that I've
tried it here at 4096 and 16384 with no ill-effects.  A value
of 4096 _shouldn't_ affect much as far as the kernel/file system
goes, but making it bigger than 8192 can have severe consequences
if you don't know what you're doing.  16394 worked for me, _BUT_
when I went to 32768 and did an initdb, the SCSI driver broke and
the partition that I was running under went to hell in a hand
basket. Had to reboot and do a good bit of fsck'ing to fix things up.

The patch can be safely applied though.  Just leave BLCKSZ = 8192
and everything is as before.  It basically only cleans up all of the
references to BLCKSZ in the code.

If this patch is applied, a comment in the config.h file though above
the BLCKSZ define with warning about monkeying around with it would
be a good idea.

Darren  darrenk@insightdist.com

(Also cleans up some of the #includes in files referencing BLCKSZ.)
==========================================
This commit is contained in:
Marc G. Fournier
1998-01-13 04:05:12 +00:00
parent f0445dcbc4
commit 374bb5d261
15 changed files with 156 additions and 167 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/backend/access/nbtree/nbtsort.c
View File

@@ -5,7 +5,7 @@
*
*
* IDENTIFICATION
* $Id: nbtsort.c,v 1.26 1998/01/07 21:01:59 momjian Exp $
* $Id: nbtsort.c,v 1.27 1998/01/13 04:03:41 scrappy Exp $
*
* NOTES
*
@@ -49,13 +49,12 @@
#include <fcntl.h>
#include <postgres.h>
#include <utils/memutils.h>
#include <storage/bufpage.h>
#include <access/nbtree.h>
#include <storage/bufmgr.h>
#include "postgres.h"
#include "access/nbtree.h"
#include "storage/bufmgr.h"
#include "storage/bufpage.h"
#include "utils/memutils.h"
#ifndef HAVE_MEMMOVE
#include <regex/utils.h>
@@ -64,7 +63,7 @@
#endif
#ifdef BTREE_BUILD_STATS
#include <tcop/tcopprot.h>
#include "tcop/tcopprot.h"
extern int ShowExecutorStats;
#endif
@@ -85,7 +84,7 @@ static void _bt_uppershutdown(Relation index, BTPageState *state);
#define FASTBUILD_MERGE
#define MAXTAPES (7)
#define TAPEBLCKSZ (MAXBLCKSZ << 2)
#define TAPEBLCKSZ (BLCKSZ << 2)
#define TAPETEMP "pg_btsortXXXXXX"
extern int NDirectFileRead;
@@ -458,7 +457,7 @@ _bt_tapewrite(BTTapeBlock *tape, int eor)
{
tape->bttb_eor = eor;
FileWrite(tape->bttb_fd, (char *) tape, TAPEBLCKSZ);
NDirectFileWrite += TAPEBLCKSZ / MAXBLCKSZ;
NDirectFileWrite += TAPEBLCKSZ / BLCKSZ;
_bt_tapereset(tape);
}
@@ -496,7 +495,7 @@ _bt_taperead(BTTapeBlock *tape)
return (0);
}
Assert(tape->bttb_magic == BTTAPEMAGIC);
NDirectFileRead += TAPEBLCKSZ / MAXBLCKSZ;
NDirectFileRead += TAPEBLCKSZ / BLCKSZ;
return (1);
}