Date: Tue, 4 Dec 2001 23:43:25 -0600 From: Doug Poland <doug@polands.org> To: questions@freebsd.org Subject: Affect of CPU/Bus speed on disk performance Message-ID: <20011204234325.A58051@polands.org>
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Hi, I'm building a file server for a small windows network (Win2K clients) whose only purpose in life will be to serve up samba file requests. The NIC's involved are all Intel Pro 10/100B/100+ using a SMC 10/100 switche. Given that, I'd like general guidance on how CPU/Bus speed will affect access on the samba server. For simplicty sake, let's say I've got a single 9.1GB, 7200RPM SCSI drive on the server with an Adaptec 2940UW host adapter in a Pentium 133MHz box. Would this CPU/bus be the bottleneck? If I wanted better performance, would it be better to buy a 10,000 or 15,000 RPM drive or move up in processor speed? Or maybe in this configuration the 100Mbit network is the bottleneck? My feeling is that even a modest CPU will spend most of it's time waiting for the fastest disk. So if I'm on a limited budget, the most bang for the buck would be to buy the fastest disks I can, and RAID them. If I need better performance, what would be the next component to upgrade? Gigabit NICs and switch? New MOBO/CPU? Many thanks for your thoughts and advice. -- Regards, Doug To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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