Date: Tue, 16 Jan 2007 14:25:06 -0800 From: "Kip Macy" <kip.macy@gmail.com> To: "Ivan Voras" <ivoras@fer.hr> Cc: freebsd-current@freebsd.org, freebsd-arch@freebsd.org Subject: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs Message-ID: <b1fa29170701161425n7bcfe1e5m1b8c671caf3758db@mail.gmail.com> In-Reply-To: <eoji7s$cit$2@sea.gmane.org> References: <3bbf2fe10607250813w8ff9e34pc505bf290e71758@mail.gmail.com> <3bbf2fe10607250814m1a476f09p2d962dedc0c99be1@mail.gmail.com> <200607251232.51230.jhb@freebsd.org> <3bbf2fe10607251004wf94e238xb5ea7a31c973817f@mail.gmail.com> <3bbf2fe10607261127p3f01a6c3w80027754f7d4e594@mail.gmail.com> <3bbf2fe10607281004o6727e976h19ee7e054876f914@mail.gmail.com> <3bbf2fe10701160851r79b04464m2cbdbb7f644b22b6@mail.gmail.com> <20070116154258.568e1aaf@pleiades.nextvenue.com> <b1fa29170701161355lc021b90o35fa5f9acb5749d@mail.gmail.com> <eoji7s$cit$2@sea.gmane.org>
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On 1/16/07, Ivan Voras <ivoras@fer.hr> wrote: > Kip Macy wrote: > > x86 pre-P4 had 32-byte cache lines. Thus older processors will not benefit. > > But it does seem to hurt the performance a bit - maybe it's time to add > another CPU option like I586_CPU and I686_CPU? Unless there is a compelling reason not to do so, I think that that would be a good idea. -Kip
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