> 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: ? ... -- Rod Grimes rgri...@freebsd.org _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
