Date: Thu, 16 Jan 1997 20:20:24 -0500 From: John Duncan <jddst19+@pitt.edu> To: "FreeBSD-questions@freebsd.org" <FreeBSD-questions@freebsd.org> Subject: RE: Info on "I686_CPU" and FDESC kernel compile options please Message-ID: <01BC03EB.AA361440@ehdup-p-7.rmt.net.pitt.edu>
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---------- From: That Doug Guy[SMTP:tiller@connectnet.com] Sent: Thursday, January 16, 1997 4:46 AM To: FreeBSD-questions@freebsd.org Subject: Info on "I686_CPU" and FDESC kernel compile options please Howdy, :) [on a p6] We are running a 2.1.5-Release system, and I am wondering if the "I686_CPU" option is available to me, and if it would help significantly. The I686_CPU is an option that, if used singularly, should make use of a few of the things that make P6s useful. I would say that it will increase in speed, although the clock rate should be the most major improvement that a p6 offers. An increase in performance for IRC servers come from wide-bus scsi drivers, faster network channels, etc. Also, we run an IRC server on this system that makes heavy use of File Descriptors. Would installing support for the FDESC filesystem be of use to me? I can't find any documentation on it in the Handbook/FAQ search, and nothing that helped me in the mail list search. No, you would not gain any speed. You should look into the ccd0 driver. If you have two scsi or ide channels, that is, adapters, then concatenating _identical_ disks will garner a definite performance increase. IRC usually requires many file accesses,, which are best-performed by ccds. Also, caching scsi controllers can help, but I'm not sure if we have the support. Any other info on what to look for would be appreciated as well. Thanks, Doug
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