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Additional mop-up for sync-to-fsync changes: avoid issuing fsyncs for

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temp tables, and avoid WAL-logging truncations of temp tables.  Do issue
fsync on truncated files (not sure this is necessary but it seems like
a good idea).
This commit is contained in:
Tom Lane
2004-05-31 20:31:33 +00:00
parent e674707968
commit 91d20ff7aa
5 changed files with 94 additions and 52 deletions
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32
src/backend/storage/smgr/md.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.105 2004/05/31 03:48:06 tgl Exp $
* $PostgreSQL: pgsql/src/backend/storage/smgr/md.c,v 1.106 2004/05/31 20:31:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -270,7 +270,7 @@ mdunlink(RelFileNode rnode, bool isRedo)
* already. Might as well pass in the position and save a seek.
*/
bool
mdextend(SMgrRelation reln, BlockNumber blocknum, char *buffer)
mdextend(SMgrRelation reln, BlockNumber blocknum, char *buffer, bool isTemp)
{
long seekpos;
int nbytes;
@@ -311,8 +311,11 @@ mdextend(SMgrRelation reln, BlockNumber blocknum, char *buffer)
return false;
}
if (!register_dirty_segment(reln, v))
return false;
if (!isTemp)
{
if (!register_dirty_segment(reln, v))
return false;
}
#ifndef LET_OS_MANAGE_FILESIZE
Assert(_mdnblocks(v->mdfd_vfd, BLCKSZ) <= ((BlockNumber) RELSEG_SIZE));
@@ -465,7 +468,7 @@ mdread(SMgrRelation reln, BlockNumber blocknum, char *buffer)
* mdwrite() -- Write the supplied block at the appropriate location.
*/
bool
mdwrite(SMgrRelation reln, BlockNumber blocknum, char *buffer)
mdwrite(SMgrRelation reln, BlockNumber blocknum, char *buffer, bool isTemp)
{
long seekpos;
MdfdVec *v;
@@ -485,8 +488,11 @@ mdwrite(SMgrRelation reln, BlockNumber blocknum, char *buffer)
if (FileWrite(v->mdfd_vfd, buffer, BLCKSZ) != BLCKSZ)
return false;
if (!register_dirty_segment(reln, v))
return false;
if (!isTemp)
{
if (!register_dirty_segment(reln, v))
return false;
}
return true;
}
@@ -565,7 +571,7 @@ mdnblocks(SMgrRelation reln)
* Returns # of blocks or InvalidBlockNumber on error.
*/
BlockNumber
mdtruncate(SMgrRelation reln, BlockNumber nblocks)
mdtruncate(SMgrRelation reln, BlockNumber nblocks, bool isTemp)
{
MdfdVec *v;
BlockNumber curnblk;
@@ -624,6 +630,11 @@ mdtruncate(SMgrRelation reln, BlockNumber nblocks)
if (FileTruncate(v->mdfd_vfd, lastsegblocks * BLCKSZ) < 0)
return InvalidBlockNumber;
if (!isTemp)
{
if (!register_dirty_segment(reln, v))
return InvalidBlockNumber;
}
v = v->mdfd_chain;
ov->mdfd_chain = NULL;
}
@@ -640,6 +651,11 @@ mdtruncate(SMgrRelation reln, BlockNumber nblocks)
#else
if (FileTruncate(v->mdfd_vfd, nblocks * BLCKSZ) < 0)
return InvalidBlockNumber;
if (!isTemp)
{
if (!register_dirty_segment(reln, v))
return InvalidBlockNumber;
}
#endif
return nblocks;