database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-04 20:11:56 +03:00
Code Activity

Add an EXPLAIN (BUFFERS) option to show buffer-usage statistics.

Browse Source 
This patch also removes buffer-usage statistics from the track_counts
output, since this (or the global server statistics) is deemed to be a better
interface to this information.

Itagaki Takahiro, reviewed by Euler Taveira de Oliveira.
This commit is contained in:
Robert Haas
2009-12-15 04:57:48 +00:00
parent 6f1bf75d50
commit cddca5ec13
25 changed files with 274 additions and 140 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/storage/file/buffile.c
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/file/buffile.c,v 1.34 2009/06/11 14:49:01 momjian Exp $
* $PostgreSQL: pgsql/src/backend/storage/file/buffile.c,v 1.35 2009/12/15 04:57:47 rhaas Exp $
*
* NOTES:
*
@@ -34,6 +34,7 @@
#include "postgres.h"
#include "executor/instrument.h"
#include "storage/fd.h"
#include "storage/buffile.h"
#include "storage/buf_internals.h"
@@ -240,7 +241,7 @@ BufFileLoadBuffer(BufFile *file)
file->offsets[file->curFile] += file->nbytes;
/* we choose not to advance curOffset here */
BufFileReadCount++;
pgBufferUsage.temp_blks_read++;
}
/*
@@ -304,7 +305,7 @@ BufFileDumpBuffer(BufFile *file)
file->curOffset += bytestowrite;
wpos += bytestowrite;
BufFileWriteCount++;
pgBufferUsage.temp_blks_written++;
}
file->dirty = false;