On Thursday, June 14, 2018, Rodney W. Grimes <free...@pdx.rh.cn85.dnsmgr.net> wrote:
> > Author: kib > > Date: Wed Jun 13 17:55:09 2018 > > New Revision: 335072 > > URL: https://svnweb.freebsd.org/changeset/base/335072 > > > > Log: > > Enable eager FPU context switch by default on amd64. > > > > With compilers making increasing use of vector instructions the > > performance benefit of lazily switching FPU state is no longer a > > desirable tradeoff. Linux switched to eager FPU context switch some > > time ago, and the idea was floated on the FreeBSD-current mailing list > > some years ago[1]. > > > > Enable eager FPU context switch by default on amd64, with a > tunable/sysctl > > available to turn it back off. > > > > [1] https://lists.freebsd.org/pipermail/freebsd-current/ > 2015-March/055198.html > > > > Reviewed by: jhb > > Tested by: pho > > Sponsored by: The FreeBSD Foundation > > MFC: ? Already done. > > ... > > -- > Rod Grimes > rgri...@freebsd.org > _______________________________________________ > svn-src-head@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/svn-src-head > To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org" > _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
