From owner-freebsd-java Sun Dec 9 21:32:17 2001 Delivered-To: freebsd-java@freebsd.org Received: from hawk.prod.itd.earthlink.net (hawk.mail.pas.earthlink.net [207.217.120.22]) by hub.freebsd.org (Postfix) with ESMTP id 819A837B419 for ; Sun, 9 Dec 2001 21:32:15 -0800 (PST) Received: from dhcp151-67-151-24.nt01-c3.cpe.charter-ne.com ([24.151.67.151]) by hawk.prod.itd.earthlink.net with smtp (Exim 3.33 #1) id 16DJ2o-0002FW-00; Sun, 09 Dec 2001 21:32:02 -0800 Received: by dhcp151-67-151-24.nt01-c3.cpe.charter-ne.com (sSMTP sendmail emulation); Mon, 10 Dec 2001 00:32:00 -0500 Date: Mon, 10 Dec 2001 00:32:00 -0500 From: Dylan Carlson To: Nate Williams Cc: absinthe@pobox.com, Bill Huey , shanon loveridge , freebsd-java@FreeBSD.ORG Subject: Re: jdk1.3.1p5 Message-ID: <20011210003200.C1152@absinthe> Reply-To: absinthe@pobox.com References: <20011210001702.10731.qmail@web14303.mail.yahoo.com> <20011210024138.GA3148@gnuppy> <20011209223635.A1152@absinthe> <15380.15272.167683.46148@caddis.yogotech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: absinthe@pobox.com Organization: Retrovertigo X-Editor: VIM - Vi IMproved 6.0 2001 Sep 26 http://www.vim.org/ Sender: owner-freebsd-java@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Nate Williams wrote: > Why? The native threading that we're using now is no better/worse than > the internal green threads implementation. Without kernel threads, > native threads have *EXACTLY* the same sorts of problems that exist with > green threads. First, I'll say that I know very little about all of this, comparatively speaking. My understanding is that native threads were not dependent on kernel threads; that is, native threads are there to, among other things, reduce I/O overhead. I understand as much to know that to go SMP inside of the Java VM requires kernel threads. But again, the way I understand it is that by talking to a VM built around pthreads, that some performance gains can be had. So I guess that (until SMPng becomes a reality) what I'm asking is whether a native VM build exists around pthreads. -- Dylan Carlson (absinthe@pobox.com) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message