Ruke:
check out http://www.greatbridge.org/genpage?replication_top
for a project on PostGres replication and related info
Mauricio
From: Ruke Wang [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [HACKERS] database synchronization
Date: Tue, 29 May 2001 11:36:13 -0700
Hi there,
Folks:
As I study the source of LockBuffer in bufmgr.c I came across
the following code snippet for the case of releasing a
shared (read) lock:
if (mode == BUFFER_LOCK_UNLOCK)
{
if (*buflock BL_R_LOCK)
{
Oleg:
I concur with this, and would like to collaborate as possible.
[You may recall my messages from a couple weeks back. I'm looking at
ways of implementing 'concurrent' PostGres on a NUMA machine that has
both local memory and (a bit more costly) access to a shared memory].
Bettina
Breternitz Jr, Ph.D.
Times N Systems Inc.
1908 Kramer Ln, Braker Building B, Suite P
Austin, TX 78758
phone (512) 977 5368
[EMAIL PROTECTED]
Mauricio Breternitz Jr, Ph.D.
Times N Systems Inc.
1908 Kramer Ln, Braker Building B, Suite P
Austin, TX 78758
phone (512) 977 5368
[EMAIL PROTECTED
to a
write lock)
- copy 'out' the buffer on a WRITE lock release
I would appreciate comments and input on this approach, as I
foresee putting a lot of effort into it soon,
regards
Mauricio
From: Tom Lane [EMAIL PROTECTED]
To: Mauricio Breternitz [EMAIL PROTECTED
Folks:
I'm planning a port of Postgres to a multiprocessor
architecture in which all nodes have both local memory
and fast access to a shared memory. Shared memory it more
expensive than local memory.
My intent is to put the shmem lock structures in
shared memory, but use a
