Date: Thu, 12 Sep 2002 09:39:48 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Luigi Rizzo <rizzo@icir.org> Cc: Bruce Evans <bde@zeta.org.au>, smp@FreeBSD.ORG Subject: Re: wakeup handling on SMP boxes Message-ID: <3D80C354.5041D6E2@mindspring.com> References: <20020912043148.B98062@iguana.icir.org> <20020912232323.G6445-100000@gamplex.bde.org> <20020912070529.B98735@iguana.icir.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Luigi Rizzo wrote: > On Thu, Sep 12, 2002 at 11:41:54PM +1000, Bruce Evans wrote: > > I think the values of kernel priority don't actually matter much. > > If there are no competing processes in the kernel, then any priority > > will do. If there are some, then in most cases it doesn't help for > > them to be different, since scheduling decisions usually aren't acted > > on until the current process returns to user mode. > > precisely my point... But you mean that they don't matter if they're low, whereas Bruce means they don't matter if they're high. 8-). Personally, I buy Bruce's argument about urgent events, and I almost made his second argument, about priority not being properly raised myself, yesterday, but found something else to do, on the off chance someone else would say something. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3D80C354.5041D6E2>