diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2002-08-06 02:36:35 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2002-08-06 02:36:35 +0000 |
| commit | 5df307c7782518c4a3c19ffd05c7cb591b97e23c (patch) | |
| tree | 0ff988dc5b7b115e9f6bbf29852dd4bad7fcaeea /src/include/access/xlog.h | |
| parent | 35cd432b185938c33967c9fa48223ce33e1c66bd (diff) | |
| download | postgresql-5df307c7782518c4a3c19ffd05c7cb591b97e23c.tar.gz postgresql-5df307c7782518c4a3c19ffd05c7cb591b97e23c.zip | |
Restructure local-buffer handling per recent pghackers discussion.
The local buffer manager is no longer used for newly-created relations
(unless they are TEMP); a new non-TEMP relation goes through the shared
bufmgr and thus will participate normally in checkpoints. But TEMP relations
use the local buffer manager throughout their lifespan. Also, operations
in TEMP relations are not logged in WAL, thus improving performance.
Since it's no longer necessary to fsync relations as they move out of the
local buffers into shared buffers, quite a lot of smgr.c/md.c/fd.c code
is no longer needed and has been removed: there's no concept of a dirty
relation anymore in md.c/fd.c, and we never fsync anything but WAL.
Still TODO: improve local buffer management algorithms so that it would
be reasonable to increase NLocBuffer.
Diffstat (limited to 'src/include/access/xlog.h')
| -rw-r--r-- | src/include/access/xlog.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h index 4b661f53d32..132fef26c88 100644 --- a/src/include/access/xlog.h +++ b/src/include/access/xlog.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: xlog.h,v 1.33 2002/08/05 01:24:16 thomas Exp $ + * $Id: xlog.h,v 1.34 2002/08/06 02:36:35 tgl Exp $ */ #ifndef XLOG_H #define XLOG_H @@ -182,6 +182,7 @@ extern StartUpID ThisStartUpID; /* current SUI */ extern bool InRecovery; extern XLogRecPtr MyLastRecPtr; extern bool MyXactMadeXLogEntry; +extern bool MyXactMadeTempRelUpdate; extern XLogRecPtr ProcLastRecEnd; /* these variables are GUC parameters related to XLOG */ |