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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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14
src/backend/storage/buffer/bufmgr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.237 2008/08/11 11:05:11 heikki Exp $
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.238 2008/09/17 13:15:55 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -64,12 +64,6 @@ bool zero_damaged_pages = false;
int bgwriter_lru_maxpages = 100;
double bgwriter_lru_multiplier = 2.0;
long NDirectFileRead; /* some I/O's are direct file access. bypass
* bufmgr */
long NDirectFileWrite; /* e.g., I/O in psort and hashjoin. */
/* local state for StartBufferIO and related functions */
static volatile BufferDesc *InProgressBuf = NULL;
static bool IsForInput;
@ -1572,7 +1566,7 @@ ShowBufferUsage(void)
ReadLocalBufferCount - LocalBufferHitCount, LocalBufferFlushCount, localhitrate);
appendStringInfo(&str,
"!\tDirect blocks: %10ld read, %10ld written\n",
NDirectFileRead, NDirectFileWrite);
BufFileReadCount, BufFileWriteCount);
return str.data;
}
@ -1586,8 +1580,8 @@ ResetBufferUsage(void)
LocalBufferHitCount = 0;
ReadLocalBufferCount = 0;
LocalBufferFlushCount = 0;
NDirectFileRead = 0;
NDirectFileWrite = 0;
BufFileReadCount = 0;
BufFileWriteCount = 0;
}
/*