From owner-freebsd-hackers Tue Apr 24 9:23:51 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 1549F37B423 for ; Tue, 24 Apr 2001 09:23:48 -0700 (PDT) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id f3OGNk107441; Tue, 24 Apr 2001 09:23:46 -0700 (PDT) Date: Tue, 24 Apr 2001 09:23:46 -0700 From: Alfred Perlstein To: Alan Tegel Cc: hackers@FreeBSD.ORG Subject: Re: Question about Posix Threads Message-ID: <20010424092346.M1790@fw.wintelcom.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from alan.tegel@openwave.com on Tue, Apr 24, 2001 at 07:29:21AM -0700 X-all-your-base: are belong to us. Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Alan Tegel [010424 07:29] wrote: > How well does FreeBSD 4.3 do with Posix Threads? > > This is a question I posted to a news group. > > Hello. I work for a unix performance and capacity group. owever, we have > had some dismal performance from RedHat 6.2. The question that I would > like to know is how well does FreeBSD support Posix threads and is there > any caveats in perfromance and stability? Note, we have the ability to > push Unix (whatever version) to the extremes (very fun and very insane > job).... > > Any comments would be helpful. How is performance dismal under redhat? FreeBSD should do a really good job of running thousands of threads as long as you don't have too much disk IO since all the threads are multiplexed into a single process, if you have an IO intensive program FreeBSD threads will probably not help you all that much. There are plans on replacing the FreeBSD threads library with a multiplexed userland<->kernel scheme in the near future. -- -Alfred Perlstein - [alfred@freebsd.org] Represent yourself, show up at BABUG http://www.babug.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message