Date: Sat, 25 Nov 2006 09:36:05 +0100 From: Divacky Roman <xdivac02@stud.fit.vutbr.cz> To: Mike Tancsa <mike@sentex.net> Cc: freebsd-performance@freebsd.org Subject: Re: em forwarding performance (was Proposed 6.2 em RELEASE patch Message-ID: <20061125083605.GA17350@stud.fit.vutbr.cz> In-Reply-To: <200611242117.kAOLHuBP012313@lava.sentex.ca> References: <4558E3DC.6080800@samsco.org> <200611200454.kAK4sdat083568@lava.sentex.ca> <7.1.0.9.0.20061120160757.14d4a728@sentex.net> <200611220247.kAM2l9JP095066@lava.sentex.ca> <20061122130947.GM20405@obiwan.tataz.chchile.org> <200611231652.kANGqJsr005016@lava.sentex.ca> <1164356894.4306.1.camel@massimo.datacode.it> <200611242027.kAOKRYZg012113@lava.sentex.ca> <20061124210305.GA49228@stud.fit.vutbr.cz> <200611242117.kAOLHuBP012313@lava.sentex.ca>
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On Fri, Nov 24, 2006 at 04:18:03PM -0500, Mike Tancsa wrote: > At 04:03 PM 11/24/2006, Divacky Roman wrote: > >On Fri, Nov 24, 2006 at 03:27:40PM -0500, Mike Tancsa wrote: > >> At 03:28 AM 11/24/2006, Massimo Lusetti wrote: > >> >On Thu, 2006-11-23 at 11:52 -0500, Mike Tancsa wrote: > >> > > >> >> I might give OpenBSD a quick try as a reference. > >> > > >> >That would be very interesting. > >> > >> OpenBSD 4.0 i386 panics on boot. > >> > >> I also posted some results with PMC compiled into the kernel > >> > >> ipfw compiled into the kernel, with 1 rule > >> > >> http://www.tancsa.com/pmc/ > > > >I see generic_bzero/bcopy used quite often. why dont you define > >cpu I586_CPU > >in your kernel config? > > Hi, > > I had > > cpu I486_CPU > cpu I586_CPU > cpu I686_CPU hm.. now I am confused. the rule is that having I586_CPU improves performance because optimized bzero/bcopy is included (its not included if you only have I686_CPU). I dont understand why the generic version is used.
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