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Message-ID: <20090114114247.GB23674@vanheusden.com> Date: Wed, 14 Jan 2009 12:42:47 +0100 From: Folkert van Heusden <folkert@...heusden.com> To: Peter Zijlstra <peterz@...radead.org> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH -v8][RFC] mutex: implement adaptive spinning > > The key criteria for the busy wait is that the lock owner has to be running on > > a (different) cpu. The idea is that as long as the owner is running, there is a > > fair chance it'll release the lock soon, and thus we'll be better off spinning > > instead of blocking/scheduling. > > Won't this make Linux less "green"? (-> use more power since busy loops > use more power than idle loops) If so, maybe it should be make > configurable somewhere? Oh darn, it *is* configurable at run-time. Sorry for the noise. Folkert van Heusden -- Multitail est un outil permettant la visualisation de fichiers de journalisation et/ou le suivi de l'exécution de commandes. Filtrage, mise en couleur de mot-clé, fusions, visualisation de différences (diff-view), etc. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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