From: Bill Davidsen <davidsen@tmr.com>
To: linux-kernel@vger.kernel.org
Cc: libc-alpha@sources.redhat.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: [ANN] Userspace M-on-N threading model implementation. Alpha release.
Date: Fri, 02 Feb 2007 11:12:02 -0500 [thread overview]
Message-ID: <45C362D2.2040407@tmr.com> (raw)
In-Reply-To: <66910A579C9312469A7DF9ADB54A8B7D5C2B90@exchange.ZeugmaSystems.local>
Kaz Kylheku wrote:
> Evgeniy Polyakov wrote:
>> I described in details why and how M:N model better, and its drawbacks
>> include all issues mentioned by Ulrich Drepper, but nevertheless its
>> advantages are far too superiour than those which can be
>> provided by 1:1
>> model.
>
> M:N threading is an unnecessary performance hack that's needed by people
> who are living in a C or C++ exile away from some language that has
> lexical closures, generators or first-class continuations.
Yes, that's called the "real world." Arguments of the "I don't need it,
in a perfect world you wouldn't either, therefore it's a bad idea" type
simply contribute nothing.
Because user threading can avoid context switches, there will always be
cases where it will outperform o/s threads for hardware reasons.
--
Bill Davidsen <davidsen@tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
next prev parent reply other threads:[~2007-02-02 16:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-30 21:16 [ANN] Userspace M-on-N threading model implementation. Alpha release Kaz Kylheku
2007-01-31 8:47 ` Evgeniy Polyakov
2007-02-02 16:12 ` Bill Davidsen [this message]
2007-02-03 15:26 ` Arjan van de Ven
2007-02-04 20:12 ` Bill Davidsen
2007-02-04 20:20 ` Jakub Jelinek
2007-02-04 21:42 ` Bill Davidsen
2007-02-05 6:14 ` Arjan van de Ven
2007-02-14 12:17 ` Pavel Machek
2007-02-04 22:52 ` Davide Libenzi
[not found] <40f323d00701290747y68c8e27ege824694bfa378f58@mail.gmail.com>
2007-01-29 14:52 ` Evgeniy Polyakov
2007-01-29 14:57 ` Evgeniy Polyakov
2007-01-29 16:40 ` Chris Friesen
2007-01-30 9:46 ` Evgeniy Polyakov
2007-01-30 1:18 ` Samuel Thibault
2007-01-30 9:53 ` Evgeniy Polyakov
2007-01-30 10:24 ` Samuel Thibault
2007-01-30 10:43 ` Evgeniy Polyakov
2007-02-01 4:28 ` Lee Revell
2007-02-01 7:09 ` Evgeniy Polyakov
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