Date: Thu, 15 Jan 2009 12:54:25 -0500 From: Michael Powell <nightrecon@verizon.net> To: freebsd-questions@freebsd.org Subject: Re: kernel configuration Message-ID: <gknt72$39i$1@ger.gmane.org> References: <496E06D1.2070706@gmail.com> <20090114181522.GB4487@aurora.oekb.co.at> <B4DD918A-6026-4206-9C14-70DCD0028CFB@mac.com>
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Chuck Swiger wrote: [snip] > > While it is true that you can comment out all but i686 and get a > working kernel, you will experience reduced performance. There are a > number of low-level assembly routines (cf sys/i386/i386/support.s such > as i586_bcopy) that are conditionalized off of I586_CPU only, even > though they provide an advantage on i686 platforms also. > Thank you very kindly for this info tidbit. In my ignorance I had routinely built my kernels with only I686_CPU. Since the few boxen I have are all downlevel every niche I can squeak out some performance is sought after. Thanks indeed! -Mike
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