From owner-freebsd-questions Tue Apr 24 9:47:28 2001 Delivered-To: freebsd-questions@freebsd.org Received: from calcon.calcon.net (ns.calcon.net [63.149.52.2]) by hub.freebsd.org (Postfix) with ESMTP id BE62D37B424 for ; Tue, 24 Apr 2001 09:47:25 -0700 (PDT) (envelope-from degan@calcon.net) Received: from calcon.net (vpn1.calcon.net [63.149.52.253]) by calcon.calcon.net (8.11.2/8.11.2) with ESMTP id f3OGlGu07765 for ; Tue, 24 Apr 2001 11:47:16 -0500 Message-ID: <3AE5AE1C.AE5DF04A@calcon.net> Date: Tue, 24 Apr 2001 11:47:24 -0500 From: Douglas Egan X-Mailer: Mozilla 4.75 [en] (X11; U; NetBSD 1.5 i386) X-Accept-Language: en MIME-Version: 1.0 To: questions@FreeBSD.ORG Subject: Re: How Is The FeeBSD OS Like and Different Than Say Redhat or Suse LINUX References: <15077.43308.609040.214405@guru.mired.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I have found that most linux filesystems benchmarks have been run with the standard "async" mount option for the filesystem under test. The only way I have found to benchmark and compare apples to apples is to mount the linux fs as sync and also mount the bsd fs as sync (both async). This way all data and metadata are written synchronously and should allow a worst case filesystem/driver test and comparison. Or mount them both async as described below. The defaults of the 2 are definitely not equivalent. Doug Egan Mike Meyer wrote: > Dave Leimbach types: > > FreeBSD 4.2 still beats linux in every network benchmark except email > > handling... even in the 2.4.x kernels. > > It's probably the file system, which email handling exercies > heavily. Linux runs their file systems in async mode by default (I'm > not sure if this can be fixed), which makes the file system faster but > less robust. If you're doing benchmarks, you can mount FreeBSD file > systems async so long as you don't have softupdates enabled on the > file system. > > -- > Mike Meyer http://www.mired.org/home/mwm/ > Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message