Date: Tue, 9 Apr 2002 12:37:49 -0400 (EDT) From: Daniel Eischen <eischen@pcnet1.pcnet.com> To: Nate Williams <nate@yogotech.com> Cc: Herve Quiroz <hquiroz@esil.univ-mrs.fr>, freebsd-java@FreeBSD.ORG Subject: Re: FreeBSD 5.0 Developer Preview #1 Now Available Message-ID: <Pine.GSO.4.10.10204091234080.21403-100000@pcnet1.pcnet.com> In-Reply-To: <15539.4987.918286.268041@caddis.yogotech.com>
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On Tue, 9 Apr 2002, Nate Williams wrote: > > > A Developer Preview release of FreeBSD 5.0-CURRENT is now available > > > for widespread testing. This preview is a significant milestone > > > towards the eventual release of FreeBSD 5.0 in late 2002. Some of the > > > many new features that are available in this snapshot are listed > > > below: > > > > > > * SMP support has been largely reworked, incorporating code from > > > BSD/OS 5.0 (in progress). > > > > [...] > > > > > * An implementation of scheduler activations has been added to > > > the kernel to more efficiently handle multi-threaded > > > programs. (in progress). > > > > > > Has anyone tried the native jdk 1.3 under this 5.0-current and noticed > > significant improvements ? > > I would be suprised it it worked at all, given all the kernel changes in > 5.0. > > > Note: I am single-CPUed anyway but maybe the new scheduler makes wonders > > (hope)... > > Nope, because the scheduler activations aren't (yet) made available to > userland processes like the JDK. When that happens (it'll be a while), > then the JDK will have to be re-tooled to take advantage of the new > threading model. If it uses pthreads, it shouldn't need to be retooled, except perhaps for any MD Java thread context manipulations. SA (or KSEs) shouldn't normally be used directly except within the threads library itself. -- Dan Eischen To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message
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