Date: Sat, 11 Feb 2012 17:35:35 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-hackers@freebsd.org, Andriy Gapon <avg@freebsd.org> Subject: Re: [RFT][patch] Scheduling for HTT and not only Message-ID: <20120211153535.GT3283@deviant.kiev.zoral.com.ua> In-Reply-To: <4F367965.6000602@FreeBSD.org> References: <4F2F7B7F.40508@FreeBSD.org> <4F366E8F.9060207@FreeBSD.org> <4F367965.6000602@FreeBSD.org>
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--RIfOR5N0tZJV8I5p Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Feb 11, 2012 at 04:21:25PM +0200, Alexander Motin wrote: > At this moment I am using different penalty coefficients for SMT and=20 > shared caches (for unrelated processes sharing is is not good). No=20 > problem to add more types there. Separate flag for shared FPU could be=20 > used to have different penalty coefficients for usual threads and=20 > FPU-less kernel threads. It is very easy to record the fact of FPU access during the quantum on the context switch-out. So you can at least distinguish numeric code. This can be useful for bulldozer-like machines, if we ever want to optimize for FPU on them. --RIfOR5N0tZJV8I5p Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAk82iscACgkQC3+MBN1Mb4jZ0gCdF7mjb+P1V6sWc8+wdfEnlkVO YnMAn3u+jH7at7Ewnkk+l0UCHUeafwL4 =MELH -----END PGP SIGNATURE----- --RIfOR5N0tZJV8I5p--
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