From owner-freebsd-chat Thu Jul 15 11:37:48 1999 Delivered-To: freebsd-chat@freebsd.org Received: from shell.webmaster.com (mail.webmaster.com [209.133.28.73]) by hub.freebsd.org (Postfix) with ESMTP id B193215584 for ; Thu, 15 Jul 1999 11:37:45 -0700 (PDT) (envelope-from davids@webmaster.com) Received: from whenever ([209.133.29.2]) by shell.webmaster.com (Post.Office MTA v3.5.3 release 223 ID# 0-12345L500S10000V35) with SMTP id com; Thu, 15 Jul 1999 11:37:23 -0700 From: "David Schwartz" To: "Jamie Bowden" Cc: "Doug" , "Terry Lambert" , , , Subject: RE: Known MMAP() race conditions ... ? Date: Thu, 15 Jul 1999 11:37:23 -0700 Message-ID: <000a01becef1$14003270$021d85d1@youwant.to> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2377.0 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Importance: Normal Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > On Wed, 14 Jul 1999, David Schwartz wrote: > > : > :> I can give you a list of things from my experience (not a > :> webmaster.com employee). Threads, SMP, NFS, and purify. I > can't think of > :> anything NT does better than any unix though. :) > : > : Large RAID arrays. 4-way SMP. Applications requiring large > numbers of > :threads. Log-based system. There's nothing I know of in any UNIX > that comes > :close to NT's completion ports for efficient network I/O. > > Irix can do all that, and use different familys and speeds in the same > box. Want to mix 200mhz R10k's and 250mhz R12k's in your Origin2k? Go > for it. We have a half a terrabyte RAID onsite at NASA LaRC, hanging off > an Irix box. That machine has more processors than NT can handle. Oh, > and it doesn't go down. Again, the question was "what does NT do better than _any_ UNIX", not "what does NT do better than _every_ UNIX". The only thing I know of that NT does better than _every_ UNIX is its I/O completion port mechanism. And those of you who are going to complain about things like where its buffers get handed off between user and kernel space simply don't understand that I/O completion ports are not about I/O, they're about thread management. DS To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message