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Allow ShowBufferUsage() to report the number of reads/writes that have

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occurred to temporary files.  This replaces the unused
NDirectFileRead/NDirectFileWrite counters.

Itagaki Takahiro
This commit is contained in:
Tom Lane
2008-09-17 13:15:55 +00:00
parent 32f159cc55
commit 35c2a3c3cf
5 changed files with 17 additions and 29 deletions
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7
src/backend/storage/file/buffile.c
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/file/buffile.c,v 1.31 2008/05/02 01:08:27 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/file/buffile.c,v 1.32 2008/09/17 13:15:55 tgl Exp $
*
* NOTES:
*
@@ -36,6 +36,7 @@
#include "storage/fd.h"
#include "storage/buffile.h"
#include "storage/buf_internals.h"
/*
* We break BufFiles into gigabyte-sized segments, regardless of RELSEG_SIZE.
@@ -238,6 +239,8 @@ BufFileLoadBuffer(BufFile *file)
file->nbytes = 0;
file->offsets[file->curFile] += file->nbytes;
/* we choose not to advance curOffset here */
BufFileReadCount++;
}
/*
@@ -300,6 +303,8 @@ BufFileDumpBuffer(BufFile *file)
file->offsets[file->curFile] += bytestowrite;
file->curOffset += bytestowrite;
wpos += bytestowrite;
BufFileWriteCount++;
}
file->dirty = false;