diff options
| author | Tom Lane | 2004-05-08 19:09:25 +0000 |
|---|---|---|
| committer | Tom Lane | 2004-05-08 19:09:25 +0000 |
| commit | 4af3421161ce7847a019ec0799c898586574801f (patch) | |
| tree | 3ec8744681ef2d3e03b4479a677151a15a68b3f1 /src/include/utils | |
| parent | 1fe11fad543fcaaf9ae7826f1234530a9d59c1b0 (diff) | |
Get rid of rd_nblocks field in relcache entries. Turns out this was
costing us lots more to maintain than it was worth. On shared tables
it was of exactly zero benefit because we couldn't trust it to be
up to date. On temp tables it sometimes saved an lseek, but not often
enough to be worth getting excited about. And the real problem was that
we forced an lseek on every relcache flush in order to update the field.
So all in all it seems best to lose the complexity.
Diffstat (limited to 'src/include/utils')
| -rw-r--r-- | src/include/utils/rel.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/include/utils/rel.h b/src/include/utils/rel.h index 8532c5a737a..e5008e56ea5 100644 --- a/src/include/utils/rel.h +++ b/src/include/utils/rel.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.73 2004/02/10 01:55:27 tgl Exp $ + * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.74 2004/05/08 19:09:25 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -107,7 +107,6 @@ typedef struct RelationData RelFileNode rd_node; /* relation physical identifier */ /* use "struct" here to avoid needing to include smgr.h: */ struct SMgrRelationData *rd_smgr; /* cached file handle, or NULL */ - BlockNumber rd_nblocks; /* number of blocks in rel */ BlockNumber rd_targblock; /* current insertion target block, or * InvalidBlockNumber */ int rd_refcnt; /* reference count */ |