From: wojtek@power.com.pl (Wojtek Narczynski)
Subject: Re: State Threads
Date: 7 Sep 2004 08:20:36 -0700
Date: 2004-09-07T08:20:36-07:00 [thread overview]
Message-ID: <5ad0dd8a.0409070720.4026fb02@posting.google.com> (raw)
In-Reply-To: wvbry8jmjsqu.fsf@sun.com
Hello,
> One (very old) way of doing this is the way it has tradionally been
> done in TP monitors. (...)
Gray & Reuter 'Transaction processing: concepts and techniques' is one
of my favourite tech books.
> On a Unix system the select or poll system calls would be the
> natural choiche to handle your sockets, although I wonder how it would
> scale to 100K connections.
They would not, this is why xBSD has kqueue and Linux has epoll.
> Also observe that the state-threads library has no explicit
> support for multiple CPU's.
Observed, need to fork one process per CPU.
> You might argue that in a typical web server, each new request will
> result in blocking disk IO, thus leading to an ever increasing number
> of threads. But the answer is, just don't increase the number of
> threads. If the disk is the bottleneck, increasing the number of
> active requests will not give you any better throughput as long as you
> have a reasonable number of active entries in the disk queue at any
> time.
In the application, we're looking at writing, there is no disk IO at
all, there are only TCP and UDP conversations. But I think I could
have a separate, internally threaded, file server process. BTW, Linux
2.6 can do asynchronous disk IO, after all these years...
Currently I am attempting to renovate fsu threading, as I described in
anoter other post. I'm stuck with assembly code, bleh! If this fails,
I will re-read the G&R book on TP monitor architecture.
Thanks,
Wojtek
next prev parent reply other threads:[~2004-09-07 15:20 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-23 18:27 Feasibility of using Ada in new development Robert Law
2004-08-23 19:05 ` Martin Dowie
2004-08-23 19:09 ` Jeffrey Carter
2004-08-24 0:06 ` Florian Weimer
2004-08-24 1:31 ` Stephen Leake
2004-08-24 3:59 ` Adrian Hoe
2004-08-24 4:13 ` Steve
2004-08-24 11:09 ` Phong Ho
2004-08-24 11:40 ` Jeff C,
2004-08-24 20:25 ` Robert Law
2004-08-25 21:05 ` Dan McLeran
2004-08-26 2:42 ` John B. Matthews
2004-08-26 11:49 ` Georg Bauhaus
2004-08-26 19:31 ` Dan McLeran
2004-08-26 20:04 ` Simon Wright
2004-08-27 12:47 ` Georg Bauhaus
2004-08-27 21:08 ` Dan McLeran
2004-08-28 0:28 ` Stephen Leake
2004-09-01 4:09 ` Adrian Hoe
2004-09-01 4:07 ` Adrian Hoe
2004-09-01 14:14 ` Hyman Rosen
2004-09-01 15:30 ` Ed Falis
2004-09-05 20:50 ` Florian Weimer
2004-09-05 21:27 ` Ed Falis
2004-08-26 18:15 ` Ludovic Brenta
2004-08-28 17:57 ` Dan McLeran
2004-08-28 18:37 ` Ludovic Brenta
2004-08-30 17:06 ` Dan McLeran
2004-08-30 18:00 ` Georg Bauhaus
2004-08-30 18:55 ` Jeffrey Carter
2004-08-31 17:11 ` Dan McLeran
2004-08-31 17:46 ` stephane richard
2004-08-31 19:19 ` Björn Persson
2004-09-01 12:32 ` Georg Bauhaus
2004-09-01 14:35 ` Björn Persson
2004-09-02 15:18 ` Dan McLeran
2004-09-02 22:03 ` Randy Brukardt
2004-09-03 14:56 ` Dan McLeran
2004-09-03 18:09 ` Jeffrey Carter
2004-09-03 23:42 ` Randy Brukardt
2004-09-04 15:06 ` Stephen Leake
2004-09-04 18:31 ` Georg Bauhaus
2004-09-05 8:18 ` Pascal Obry
2004-09-07 8:32 ` Jacob Sparre Andersen
2004-09-07 8:57 ` Georg Bauhaus
2004-09-08 12:26 ` Stephen Leake
2004-09-08 13:07 ` Georg Bauhaus
2004-08-31 18:12 ` Jeffrey Carter
2004-08-31 18:14 ` stephane richard
2004-08-31 20:09 ` Hyman Rosen
2004-09-02 8:56 ` Martin Dowie
2004-09-02 16:23 ` Martin Krischik
2004-09-03 8:30 ` Martin Dowie
2004-09-03 18:04 ` Jeffrey Carter
2004-09-02 15:11 ` Dan McLeran
2004-09-02 16:17 ` Code completion Björn Persson
2004-09-02 17:42 ` Georg Bauhaus
2004-09-02 19:29 ` Feasibility of using Ada in new development Simon Wright
2004-09-03 14:57 ` Dan McLeran
2004-08-26 9:52 ` Pascal Obry
2004-09-03 7:14 ` Case Crab
2004-09-03 12:21 ` Georg Bauhaus
2004-08-25 1:08 ` Puckdropper
2004-08-25 6:02 ` Adrian Hoe
2004-08-25 8:12 ` Martin Dowie
2004-08-25 12:54 ` Florian Weimer
2004-08-24 23:01 ` Luke A. Guest
2004-08-26 17:17 ` Warren W. Gay VE3WWG
2004-08-31 6:22 ` Wojtek Narczynski
2004-09-01 4:04 ` Adrian Hoe
2004-09-04 15:38 ` Wojtek Narczynski
2004-09-05 8:27 ` Pascal Obry
2004-09-05 11:54 ` Marius Amado Alves
2004-09-05 12:18 ` State Threads (was: Feasibility of using Ada in new development) Björn Persson
2004-09-05 13:13 ` State Threads Marius Amado Alves
2004-09-06 13:15 ` Wojtek Narczynski
2004-09-06 14:28 ` Marius Amado Alves
2004-09-06 18:24 ` Wojtek Narczynski
2004-09-07 0:23 ` Marius Amado Alves
2004-09-07 8:13 ` Wojtek Narczynski
2004-09-07 10:03 ` Marius Amado Alves
2004-09-07 10:08 ` Ole-Hjalmar Kristensen
2004-09-07 15:20 ` Wojtek Narczynski [this message]
2004-09-06 16:23 ` Georg Bauhaus
2004-09-07 8:01 ` Wojtek Narczynski
2004-09-07 9:16 ` Georg Bauhaus
2004-09-08 12:38 ` Wojtek Narczynski
2004-09-08 13:26 ` Georg Bauhaus
2004-09-06 12:19 ` Feasibility of using Ada in new development Wojtek Narczynski
2004-09-06 17:56 ` Wojtek Narczynski
2004-09-06 20:52 ` Pascal Obry
2004-09-07 8:40 ` Wojtek Narczynski
2004-09-07 23:59 ` Randy Brukardt
2004-09-08 9:10 ` Wojtek Narczynski
2004-09-09 1:12 ` Randy Brukardt
2004-09-09 10:26 ` Wojtek Narczynski
2004-09-09 21:46 ` Randy Brukardt
2004-09-06 3:11 ` Adrian Hoe
2004-09-06 8:17 ` Mark Lorenzen
2004-09-06 12:31 ` Wojtek Narczynski
2004-09-06 7:36 ` Ole-Hjalmar Kristensen
2004-09-06 15:32 ` Wojtek Narczynski
2004-09-07 23:51 ` Randy Brukardt
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