Date: Fri, 18 Mar 2011 15:56:47 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Bruce Evans <brde@optusnet.com.au> Cc: freebsd-hackers@freebsd.org, Jung-uk Kim <jkim@freebsd.org>, Maxim Dounin <mdounin@mdounin.ru> Subject: Re: get_cyclecount(9) deprecation Message-ID: <20110318135647.GY78089@deviant.kiev.zoral.com.ua> In-Reply-To: <20110318162252.S984@besplex.bde.org> References: <201103171436.22283.jkim@FreeBSD.org> <20110318162252.S984@besplex.bde.org>
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--+cM0fg6xnYQzCTTM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Mar 18, 2011 at 05:26:53PM +1100, Bruce Evans wrote: ... > - set cputicker() has some design bugs. It assumes that the tick frequency > is the same across all CPUs, but the TSC is per-CPU. I have an old SMP > system with CPUs of different frequency that can demonstrate bugs from > this. We definitely do not support configurations with different models of CPUs in SMP, this is what Simmetric is about. Different as in frequency or stepping. --+cM0fg6xnYQzCTTM Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk2DZJ8ACgkQC3+MBN1Mb4jipACgzJaB/F9l5tXTRnNwuwWND5BF +TgAoIbACHkiEEe9YTG9PDm4Vw5tpaCp =NGa3 -----END PGP SIGNATURE----- --+cM0fg6xnYQzCTTM--
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