From owner-freebsd-hackers Fri Apr 7 9:11:33 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from kcmso1.proxy.att.com (kcmso1.att.com [192.128.133.69]) by hub.freebsd.org (Postfix) with ESMTP id 1AC1F37BE95 for ; Fri, 7 Apr 2000 09:11:20 -0700 (PDT) (envelope-from myevmenkin@att.com) Received: from njb140r1.ems.att.com ([135.65.202.58]) by kcmso1.proxy.att.com (AT&T IPNS/MSO-2.2) with ESMTP id MAA04834; Fri, 7 Apr 2000 12:11:06 -0400 (EDT) Received: from njb140bh1.ems.att.com by njb140r1.ems.att.com (8.8.8+Sun/ATTEMS-1.4.1 sol2) id MAA18439; Fri, 7 Apr 2000 12:10:15 -0400 (EDT) Received: by njb140bh1.ems.att.com with Internet Mail Service (5.5.2650.21) id <23Y3X3HB>; Fri, 7 Apr 2000 12:11:07 -0400 Message-ID: From: "Yevmenkin, Maksim N, CSCIO" To: "'Gustavo V G C Rios'" Cc: "'freebsd-hackers@freebsd.org'" Subject: RE: Is traditional unixes kernel really stable ? Date: Fri, 7 Apr 2000 12:10:56 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG [...] > > only one :-) performance :-) context switch is a slow operation. > > > Excuse me gentleman, who said that ? Well, Intel does :) > Take time to visit this site: > http://www.qnx.com/iat/download/index.html I know this OS. It looks great. Perhaps, it is a good choice for embeded OS. A good OS design could help to reduce context switch overhead. Just to give you some examples of context switching overhead, please take a look at http://www.atnf.csiro.au/~rgooch/benchmarks/linux-scheduler.html Thanks, emax To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message