From owner-freebsd-questions@FreeBSD.ORG Fri Jul 24 14:47:49 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B0569106564A for ; Fri, 24 Jul 2009 14:47:49 +0000 (UTC) (envelope-from steve@ibctech.ca) Received: from smtp.ibctech.ca (v6.ibctech.ca [IPv6:2607:f118::b6]) by mx1.freebsd.org (Postfix) with SMTP id 2C2968FC1D for ; Fri, 24 Jul 2009 14:47:49 +0000 (UTC) (envelope-from steve@ibctech.ca) Received: (qmail 42379 invoked by uid 89); 24 Jul 2009 14:47:52 -0000 Received: from unknown (HELO ?IPv6:2607:f118::5?) (steve@ibctech.ca@2607:f118::5) by 2607:f118::b6 with ESMTPA; 24 Jul 2009 14:47:52 -0000 Message-ID: <4A69C8FD.7060603@ibctech.ca> Date: Fri, 24 Jul 2009 10:45:17 -0400 From: Steve Bertrand User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: John Nielsen References: <4A68F5CF.8030303@ibctech.ca> <200907241022.15985.lists@jnielsen.net> In-Reply-To: <200907241022.15985.lists@jnielsen.net> X-Enigmail-Version: 0.96.0 Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms050206020006040806000003" Cc: freebsd-questions@freebsd.org Subject: Re: VMWare ESX and FBSD 7.2 AMD64 guest X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Jul 2009 14:47:50 -0000 This is a cryptographically signed message in MIME format. --------------ms050206020006040806000003 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit John Nielsen wrote: > On Thursday 23 July 2009 19:44:15 Steve Bertrand wrote: >> My problem is performance. I'm only willing to make this box virtual if >> I can keep the abstraction performance loss to <25% (my ultimate goal >> would be 15%). >> usable memory = 8575160320 (8177 MB) >> avail memory = 8273620992 (7890 MB) >> >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >> cpu0 (BSP): APIC ID: 0 >> cpu1 (AP): APIC ID: 1 >> cpu2 (AP): APIC ID: 6 >> cpu3 (AP): APIC ID: 7: > > Did you give the VM 4 virtual processors as well? How much RAM did it have? > What type of storage does the server have? Did the VM just get a .vmdk on > VMFS? What version of ESX? I gave it all four procs to use, and all available memory. See below about storage system. > The system time is what's running away. My guess is that > that is largely due to disk I/O and virtualization of same. What you can do > to address this depends on what hardware you have. Giving the VM a raw > slice/LUN/disk instead of a .vmdk file may improve matters somewhat. If you > do use a disk file be sure that it lives on a stripe (or whatever unit is > relevant) boundary of the underlying storage. Ways to do that (if any) depend > on the storage. Improving the RAID performance, etc. of the storage will > improve your benchmark overall, and may or may not narrow the divide. The storage system is the following, with 512MB cache. I'm trying to figure out if the cache has a battery backup installed, as I've read that disk performance could be affected without it. kernel: ciss0: With six Fujitsu MHW2120BS 120GB 5.4k SATA laptop drives. After performing multiple in-OS and outside-of-OS benchmark tests, the maximum read speed I can achieve is ~7MBps. Before I reconfigured the machine from the default RAID6 to RAID1+0, I was capped at ~5. This is certainly a huge bottleneck. I'm not impressed in any way with that type of performance, when a lesser system that I have running FBSD 7.2 and ZFS can achieve ~160MBps. I know the drives are only 5.4k, but ~7MB just isn't right. I'm off to see what we can do about that. 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