Date: Mon, 8 Jul 2013 21:31:17 -0700 From: "Simon J. Gerraty" <sjg@juniper.net> To: Devin Teske <dteske@FreeBSD.org> Cc: "svn-src-head@freebsd.org" <svn-src-head@FreeBSD.org>, "svn-src-all@freebsd.org" <svn-src-all@FreeBSD.org>, Alfred Perlstein <alfred@FreeBSD.org>, "src-committers@freebsd.org" <src-committers@FreeBSD.org>, Garrett Cooper <yaneurabeya@gmail.com> Subject: Re: svn commit: r253002 - head Message-ID: <20130709043117.C181758097@chaos.jnpr.net> In-Reply-To: <13CA24D6AB415D428143D44749F57D7201FB7609@ltcfiswmsgmb21> References: <201307072039.r67KdCdR028908@svn.freebsd.org> <9D4C7540-A3B0-45E5-8219-6A455D41DF70@gmail.com> <51D9DA55.2090808@freebsd.org> <13CA24D6AB415D428143D44749F57D7201FB7609@ltcfiswmsgmb21>
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>We've run as high as -j48 ... number of logical cpu's "times-two" (it was o= >n a box with 24 logical CPUs). We've (ok dhw@ has) done a lot of empirical measurement to determine optimal jobs_factor numbers for various machines. Right now we are using .75 for boxes with > 16 cores. For smaller boxes we use up to 1.5 Scaling on NUMA boxes is a sore point ;-) If someone could get FreeBSD to scale on larger (64 core) NUMA boxes that would be excellent.
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