Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Skip to content

Commit 7bce3e9

Browse files
bmomjianbmomjian
committed
Remove mutex mention. Fixed now.
1 parent 182722f commit 7bce3e9

File tree

1 file changed

+10
-68
lines changed

1 file changed

+10
-68
lines changed

‎doc/TODO.detail/performance

Lines changed: 10 additions & 68 deletions
Original file line numberDiff line numberDiff line change
@@ -345,7 +345,7 @@ From owner-pgsql-hackers@hub.org Tue Oct 19 10:31:10 1999
345345
Received: from renoir.op.net (root@renoir.op.net [209.152.193.4])
346346
by candle.pha.pa.us (8.9.0/8.9.0) with ESMTP id KAA29087
347347
for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 10:31:08 -0400 (EDT)
348-
Received: from hub.org (hub.org [216.126.84.1]) by renoir.op.net (o1/$Revision: 1.7 $) with ESMTP id KAA27535 for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 10:19:47 -0400 (EDT)
348+
Received: from hub.org (hub.org [216.126.84.1]) by renoir.op.net (o1/$Revision: 1.8 $) with ESMTP id KAA27535 for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 10:19:47 -0400 (EDT)
349349
Received: from localhost (majordom@localhost)
350350
by hub.org (8.9.3/8.9.3) with SMTP id KAA30328;
351351
Tue, 19 Oct 1999 10:12:10 -0400 (EDT)
@@ -371,7 +371,7 @@ Date: Tue, 19 Oct 1999 10:09:15 -0400
371371
Message-ID: <9036.940342155@sss.pgh.pa.us>
372372
From: Tom Lane <tgl@sss.pgh.pa.us>
373373
Sender: owner-pgsql-hackers@postgreSQL.org
374-
Status: OR
374+
Status: RO
375375

376376
"Hiroshi Inoue" <Inoue@tpf.co.jp> writes:
377377
> 1. shared cache holds committed system tuples.
@@ -454,7 +454,7 @@ From owner-pgsql-hackers@hub.org Tue Oct 19 21:25:30 1999
454454
Received: from renoir.op.net (root@renoir.op.net [209.152.193.4])
455455
by candle.pha.pa.us (8.9.0/8.9.0) with ESMTP id VAA28130
456456
for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 21:25:26 -0400 (EDT)
457-
Received: from hub.org (hub.org [216.126.84.1]) by renoir.op.net (o1/$Revision: 1.7 $) with ESMTP id VAA10512 for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 21:15:28 -0400 (EDT)
457+
Received: from hub.org (hub.org [216.126.84.1]) by renoir.op.net (o1/$Revision: 1.8 $) with ESMTP id VAA10512 for <maillist@candle.pha.pa.us>; Tue, 19 Oct 1999 21:15:28 -0400 (EDT)
458458
Received: from localhost (majordom@localhost)
459459
by hub.org (8.9.3/8.9.3) with SMTP id VAA50745;
460460
Tue, 19 Oct 1999 21:07:23 -0400 (EDT)
@@ -487,7 +487,7 @@ X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0
487487
X-Mimeole: Produced By Microsoft MimeOLE V4.72.2106.4
488488
Importance: Normal
489489
Sender: owner-pgsql-hackers@postgreSQL.org
490-
Status: ORr
490+
Status: RO
491491

492492
> -----Original Message-----
493493
> From: Hiroshi Inoue [mailto:Inoue@tpf.co.jp]
@@ -573,7 +573,7 @@ From: Tom Lane <tgl@sss.pgh.pa.us>
573573
X-Mailing-List: pgsql-hackers@postgresql.org
574574
Precedence: bulk
575575
Sender: pgsql-hackers-owner@hub.org
576-
Status: ORr
576+
Status: RO
577577

578578
Those of you with long memories may recall a benchmark that Edmund Mergl
579579
drew our attention to back in May '99. That test showed extremely slow
@@ -648,7 +648,7 @@ Content-Type: text/plain; charset=us-ascii
648648
Content-Disposition: inline
649649
User-Agent: Mutt/1.2i
650650
In-Reply-To: <200101191703.MAA25873@candle.pha.pa.us>; from pgman@candle.pha.pa.us on Fri, Jan 19, 2001 at 12:03:58PM -0500
651-
Status: OR
651+
Status: RO
652652

653653
On Fri, Jan 19, 2001 at 12:03:58PM -0500, Bruce Momjian wrote:
654654
>
@@ -722,7 +722,7 @@ Content-Type: text/plain;
722722
charset="iso-8859-1"
723723
Precedence: bulk
724724
Sender: pgsql-hackers-owner@postgresql.org
725-
Status: OR
725+
Status: RO
726726

727727
> > Tom, did we ever test this? I think we did and found that
728728
> > it was the same or worse, right?
@@ -760,7 +760,7 @@ Subject: Re: 7.2 items
760760
References: <200106071503.f57F32n03924@candle.pha.pa.us>
761761
Content-Type: text/plain; charset=us-ascii
762762
Content-Transfer-Encoding: 7bit
763-
Status: OR
763+
Status: RO
764764

765765
Bruce Momjian wrote:
766766

@@ -829,7 +829,7 @@ X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
829829
MIME-Version: 1.0
830830
Content-Type: text/plain; charset="us-ascii"
831831
Content-Transfer-Encoding: 7bit
832-
Status: OR
832+
Status: RO
833833

834834
And in addition,
835835

@@ -930,7 +930,7 @@ In-Reply-To: <3B1FC9CB.57C72AD6@mohawksoft.com>
930930
Message-ID: <Pine.GSO.4.33.0106072234120.6015-100000@ra.sai.msu.su>
931931
MIME-Version: 1.0
932932
Content-Type: TEXT/PLAIN; charset=US-ASCII
933-
Status: OR
933+
Status: RO
934934

935935
I think it's possible to implement bitmap indexes with a little
936936
effort using GiST. at least I know one implementation
@@ -1002,61 +1002,3 @@ Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
10021002
phone: +007(095)939-16-83, +007(095)939-23-83
10031003

10041004

1005-
From pgsql-hackers-owner+M11649@postgresql.org Wed Aug 1 15:22:46 2001
1006-
Return-path: <pgsql-hackers-owner+M11649@postgresql.org>
1007-
Received: from postgresql.org (webmail.postgresql.org [216.126.85.28])
1008-
by candle.pha.pa.us (8.10.1/8.10.1) with ESMTP id f71JMjN09768
1009-
for <pgman@candle.pha.pa.us>; Wed, 1 Aug 2001 15:22:45 -0400 (EDT)
1010-
Received: from postgresql.org.org (webmail.postgresql.org [216.126.85.28])
1011-
by postgresql.org (8.11.3/8.11.1) with SMTP id f71JMUf62338;
1012-
Wed, 1 Aug 2001 15:22:30 -0400 (EDT)
1013-
(envelope-from pgsql-hackers-owner+M11649@postgresql.org)
1014-
Received: from sectorbase2.sectorbase.com (sectorbase2.sectorbase.com [63.88.121.62] (may be forged))
1015-
by postgresql.org (8.11.3/8.11.1) with SMTP id f71J4df57086
1016-
for <pgsql-hackers@postgresql.org>; Wed, 1 Aug 2001 15:04:40 -0400 (EDT)
1017-
(envelope-from vmikheev@SECTORBASE.COM)
1018-
Received: by sectorbase2.sectorbase.com with Internet Mail Service (5.5.2653.19)
1019-
id <PG1LSSPZ>; Wed, 1 Aug 2001 12:04:31 -0700
1020-
Message-ID: <3705826352029646A3E91C53F7189E32016705@sectorbase2.sectorbase.com>
1021-
From: "Mikheev, Vadim" <vmikheev@SECTORBASE.COM>
1022-
To: "'pgsql-hackers@postgresql.org'" <pgsql-hackers@postgresql.org>
1023-
Subject: [HACKERS] Using POSIX mutex-es
1024-
Date: Wed, 1 Aug 2001 12:04:24 -0700
1025-
MIME-Version: 1.0
1026-
X-Mailer: Internet Mail Service (5.5.2653.19)
1027-
Content-Type: text/plain;
1028-
charset="koi8-r"
1029-
Precedence: bulk
1030-
Sender: pgsql-hackers-owner@postgresql.org
1031-
Status: OR
1032-
1033-
1. Just changed
1034-
TAS(lock) to pthread_mutex_trylock(lock)
1035-
S_LOCK(lock) to pthread_mutex_lock(lock)
1036-
S_UNLOCK(lock) to pthread_mutex_unlock(lock)
1037-
(and S_INIT_LOCK to share mutex-es between processes).
1038-
1039-
2. pgbench was initialized with scale 10.
1040-
SUN WS 10 (512Mb), Solaris 2.6 (I'm unable to test on E4500 -:()
1041-
-B 16384, wal_files 8, wal_buffers 256,
1042-
checkpoint_segments 64, checkpoint_timeout 3600
1043-
50 clients x 100 transactions
1044-
(after initialization DB dir was saved and before each test
1045-
copyed back and vacuum-ed).
1046-
1047-
3. No difference.
1048-
Mutex version maybe 0.5-1 % faster (eg: 37.264238 tps vs 37.083339 tps).
1049-
1050-
So - no gain, but no performance loss "from using pthread library"
1051-
(I've also run tests with 1 client), at least on Solaris.
1052-
1053-
And so - looks like we can use POSIX mutex-es and conditional variables
1054-
(not semaphores; man pthread_cond_wait) and should implement light lmgr,
1055-
probably with priority locking.
1056-
1057-
Vadim
1058-
1059-
---------------------------(end of broadcast)---------------------------
1060-
TIP 2: you can get off all lists at once with the unregister command
1061-
(send "unregister YourEmailAddressHere" to majordomo@postgresql.org)
1062-

0 commit comments

Comments
 (0)