Date: Sat, 29 Sep 2007 18:10:50 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: RW <mlt01@mlists.homeunix.com> Cc: freebsd-questions@freebsd.org Subject: Re: Questions on the scheduler Message-ID: <46FE790A.1000101@FreeBSD.org> In-Reply-To: <20070924184415.7bffd7d2@gumby.homeunix.com.> References: <80f4f2b20709240723m121aad88ofaf728f384dd6c20@mail.gmail.com> <20070924184415.7bffd7d2@gumby.homeunix.com.>
next in thread | previous in thread | raw e-mail | index | archive | help
RW wrote: > The FreeBSD response was to make the kernel more SMP friendly with > finer-grained locking, and to bring-in the ULE scheduler. Dragonfly BSD > was a fork off 4.x by people who thought a more radical kernel rewrite > was needed. Their kernel avoids a lot of the locking problems by using > message queues. Just to clarify, that was the theory and intention behind Dragonfly, but in practise they have yet to achieve it after 4 years and any benefits of their ideas remain unproven. Basically they have achieved no performance gains on SMP and have effectively abandoned working on it. Kris
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?46FE790A.1000101>