Date: Tue, 12 Feb 2002 16:16:25 -0600 From: "David W. Chapman Jr." <dwcjr@inethouston.net> To: "David Malone" <dwmalone@maths.tcd.ie> Cc: "Mike Silbersack" <silby@silby.com>, <cvs-committers@FreeBSD.org>, <cvs-all@FreeBSD.org> Subject: Re: cvs commit: src/sys/conf options.i386 options.pc98 src/sys/i386/conf NOTES src/sys/i386/i386 initcpu.c Message-ID: <010701c1b412$e8e27210$d800a8c0@dwcjr> References: <200202122207.aa14319@salmon.maths.tcd.ie>
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> Look at the Features line in /var/run/dmesg.boot and see if it > contains SSE: > > Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV, PAT > ,PSE36,MMX,FXSR,SSE> > > If it doesn't then the BIOS may have forgotten. If you check the > "Id = " number on the previous line of dmesg.boot and the id looks > like "0x66y" or "0x67y" then this patch should help. > > To actually use SSE within FreeBSD you'll need the CPU_ENABLE_SSE > option too. Thanks for the info. I'm asking mainly for CPUTYPE optomization when building applications under freebsd. I hear that CPUTYPE=i686 apps might actually run faster than CPUTYPE=althon but I think that is because our current GCC doesn't have better optomizations for althons. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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