Remove mutex mention. Fixed now.

doc/TODO.detail/performance

@@ -345,7 +345,7 @@ From owner-pgsql-hackers@hub.org Tue Oct 19 10:31:10 1999
 Received: from renoir.op.net (root@renoir.op.net [209.152.193.4])
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@@ -371,7 +371,7 @@ Date: Tue, 19 Oct 1999 10:09:15 -0400
 Message-ID: <9036.940342155@sss.pgh.pa.us>
 From: Tom Lane <tgl@sss.pgh.pa.us>
 Sender: owner-pgsql-hackers@postgreSQL.org
-Status: OR
+Status: RO
 
 "Hiroshi Inoue" <Inoue@tpf.co.jp> writes:
 > 1. shared cache holds committed system tuples.
@@ -454,7 +454,7 @@ From owner-pgsql-hackers@hub.org Tue Oct 19 21:25:30 1999
 Received: from renoir.op.net (root@renoir.op.net [209.152.193.4])
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@@ -487,7 +487,7 @@ X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0
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 > -----Original Message-----
 > From: Hiroshi Inoue [mailto:Inoue@tpf.co.jp]
@@ -573,7 +573,7 @@ From: Tom Lane <tgl@sss.pgh.pa.us>
 X-Mailing-List: pgsql-hackers@postgresql.org
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 Those of you with long memories may recall a benchmark that Edmund Mergl
 drew our attention to back in May '99.  That test showed extremely slow
@@ -648,7 +648,7 @@ Content-Type: text/plain; charset=us-ascii
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 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
-Status: OR
+Status: RO
 
 On Fri, Jan 19, 2001 at 12:03:58PM -0500, Bruce Momjian wrote:
 > 
@@ -722,7 +722,7 @@ Content-Type: text/plain;
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 Precedence: bulk
 Sender: pgsql-hackers-owner@postgresql.org
-Status: OR
+Status: RO
 
 > > Tom, did we ever test this?  I think we did and found that 
 > > it was the same or worse, right?
@@ -760,7 +760,7 @@ Subject: Re: 7.2 items
 References: <200106071503.f57F32n03924@candle.pha.pa.us>
 Content-Type: text/plain; charset=us-ascii
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 Bruce Momjian wrote:
 
@@ -829,7 +829,7 @@ X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
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 And in addition,
 
@@ -930,7 +930,7 @@ In-Reply-To: <3B1FC9CB.57C72AD6@mohawksoft.com>
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+Status: RO
 
 I think it's possible to implement bitmap indexes with a little
 effort using GiST. at least I know one implementation
@@ -1002,61 +1002,3 @@ Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
 phone: +007(095)939-16-83, +007(095)939-23-83
 
 
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-To: "'pgsql-hackers@postgresql.org'" <pgsql-hackers@postgresql.org>
-Subject: [HACKERS] Using POSIX mutex-es
-Date: Wed, 1 Aug 2001 12:04:24 -0700 
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-
-1. Just changed
-	TAS(lock) to pthread_mutex_trylock(lock)
-	S_LOCK(lock) to pthread_mutex_lock(lock)
-	S_UNLOCK(lock) to pthread_mutex_unlock(lock)
-(and S_INIT_LOCK to share mutex-es between processes).
-
-2. pgbench was initialized with scale 10.
-   SUN WS 10 (512Mb), Solaris 2.6 (I'm unable to test on E4500 -:()
-   -B 16384, wal_files 8, wal_buffers 256,
-   checkpoint_segments 64, checkpoint_timeout 3600
-   50 clients x 100 transactions
-   (after initialization DB dir was saved and before each test
-    copyed back and vacuum-ed).
-
-3. No difference.
-   Mutex version maybe 0.5-1 % faster (eg: 37.264238 tps vs 37.083339 tps).
-
-So - no gain, but no performance loss "from using pthread library"
-(I've also run tests with 1 client), at least on Solaris.
-
-And so - looks like we can use POSIX mutex-es and conditional variables
-(not semaphores; man pthread_cond_wait) and should implement light lmgr,
-probably with priority locking.
-
-Vadim
-
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