Date: Thu, 13 Mar 2008 22:06:54 -0400 From: David Schultz <das@FreeBSD.ORG> To: Julian Elischer <julian@elischer.org> Cc: Daniel Eischen <deischen@FreeBSD.ORG>, FreeBSD Current <current@FreeBSD.ORG> Subject: Re: KSE Message-ID: <20080314020654.GA35542@zim.MIT.EDU> In-Reply-To: <47D82E6F.6010302@elischer.org> References: <47D82E6F.6010302@elischer.org>
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On Wed, Mar 12, 2008, Julian Elischer wrote: > In the last few years several things have happened that have > changed the threading landscape, in particular the fact is, that > with it's commanding position, Linux has forced most developers to > abandon threading their applications in a way that is not suitable for > 1:1. Because of this, even if all of you had done the world's best SA implementation in the world, it might not have improved performance for any of the "killer applications" at all. That's because the designers of these apps have put a lot of effort into making them run well on many platforms, including ones where threads are expensive; hence, M:N threads are just extra baggage. Solaris had a pretty mature M:N threading implementation that they essentially abandoned several years ago, probably for similar reasons. It's a shame things worked out this way, because it pushes more complexity into the apps, but that's life. Thanks for all the work you guys put into it.
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