Date: Tue, 27 Nov 2007 23:04:22 -0800 (PST) From: Brian <bri@numail.brianwhalen.net> To: "Aryeh M. Friedman" <aryeh.friedman@gmail.com> Cc: Bruce Cran <bruce@cran.org.uk>, Pieter de Goeje <pieter@degoeje.nl>, Andy Greenwood <greenwood.andy@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Upper limit on make -j ? Message-ID: <20071127230252.L3826@numail.brianwhalen.net> In-Reply-To: <474CE269.4000608@gmail.com> References: <bef9a7920711270025k73cfd90i4d3abe3c6eab6160@mail.gmail.com> <474C3A12.9040107@gmail.com> <200711271657.00637.pieter@degoeje.nl> <474CA4E7.9060401@cran.org.uk> <20071127161036.L1233@numail.brianwhalen.net> <474CE269.4000608@gmail.com>
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There's a thread on the -stable list about 8 cores being an issue in a very specific case. I couldn't imagine setting j to something more than 2x or 3x at the most of your available cores. Brian On Tue, 27 Nov 2007, Aryeh M. Friedman wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Brian wrote: >> Isn't 1000 an unrealistically high value? >> > > For the next few years maybe but with core counts going up I can > easily see a 512 or 1024 core machine by say 2015.. i.e. Moore's law > may not apply to single tasking chips any mores but it seems to be in > full force for multi-core ones... this brings me to why I tried it in > the first place I was exploring weither or not FreeBSD was ready for > this kind of core count (specifically the idea of a multitasking OS > scheduling by allocating one process per core for core counts greater > then say 64)... I am in the process of considering the design > requirements for a OS I plan to do from the ground up and like to know > the limits of current ones. > > > - -- > Aryeh M. Friedman > Developer, not business, friendly > http://www.flosoft-systems.com > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.4 (FreeBSD) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iD8DBQFHTOJpJ9+1V27SttsRAhMCAJ902zwVIxCGecI2cAdIm2bywN383ACfU243 > HMUWkzcO8hH87PecYBmkgLc= > =5614 > -----END PGP SIGNATURE----- > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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