database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-27 23:21:58 +03:00
Code Activity

More fixes for 8.4 DTrace probes. Remove useless BUFFER_HIT/BUFFER_MISS

Browse Source 
probes --- the BUFFER_READ_DONE probe provides the same information and more
besides.  Expand the LOCK_WAIT_START/DONE probe arguments so that there's
actually some chance of telling what is being waited for.  Update and
clean up the documentation.
This commit is contained in:
Tom Lane
2009-03-23 01:52:38 +00:00
parent c242e6b6d4
commit 471913a6a5
5 changed files with 296 additions and 221 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/backend/storage/buffer/bufmgr.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.248 2009/03/22 22:39:05 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/buffer/bufmgr.c,v 1.249 2009/03/23 01:52:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -272,14 +272,7 @@ ReadBuffer_common(SMgrRelation smgr, bool isLocalBuf, ForkNumber forkNum,
ReadLocalBufferCount++;
bufHdr = LocalBufferAlloc(smgr, forkNum, blockNum, &found);
if (found)
{
LocalBufferHitCount++;
TRACE_POSTGRESQL_BUFFER_HIT(true); /* true = local buffer */
}
else
{
TRACE_POSTGRESQL_BUFFER_MISS(true); /* ditto */
}
}
else
{
@ -291,14 +284,7 @@ ReadBuffer_common(SMgrRelation smgr, bool isLocalBuf, ForkNumber forkNum,
*/
bufHdr = BufferAlloc(smgr, forkNum, blockNum, strategy, &found);
if (found)
{
BufferHitCount++;
TRACE_POSTGRESQL_BUFFER_HIT(false); /* false = shared buffer */
}
else
{
TRACE_POSTGRESQL_BUFFER_MISS(false); /* ditto */
}
}
/* At this point we do NOT hold any locks. */