Date: Tue, 04 Mar 2003 14:39:30 -0600 From: "Alan L. Cox" <alc@imimic.com> To: John Baldwin <jhb@FreeBSD.org> Cc: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/conf options.i386 src/sys/i386/conf NOTESsrc/sys/i386/i386 mp_machdep.c Message-ID: <3E650F02.AA2109F2@imimic.com> References: <200303042024.h24KOrhu053770@repoman.freebsd.org>
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John Baldwin wrote: > > jhb 2003/03/04 12:24:53 PST > > FreeBSD src repository > > Modified files: > sys/conf options.i386 > sys/i386/conf NOTES > sys/i386/i386 mp_machdep.c > Log: > Wrap the hyperthreading support code with the HTT kernel option. > Hyperthreading support is now off unless the HTT option is added. > > MFC-after: 3 days > > Revision Changes Path > 1.185 +1 -0 src/sys/conf/options.i386 > 1.1078 +1 -0 src/sys/i386/conf/NOTES > 1.204 +21 -0 src/sys/i386/i386/mp_machdep.c How hard would it be to configure the system so that the 2nd logical CPU on a chip did nothing but field interrupts? Given that interrupts are going to pollute the cache and TLB anyway, two of the detrimental effects of hyperthreading are already "bought and paid for". Alan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-src" in the body of the message
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