Messages in this thread | | | Date | Sun, 26 Dec 2004 21:33:05 -0700 (MST) | From | Zwane Mwaikambo <> | Subject | Re: Prezeroing V2 [3/4]: Add support for ZEROED and NOT_ZEROED free maps |
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On Mon, 27 Dec 2004, Ingo Oeser wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Monday 27 December 2004 00:24, Florian Weimer wrote: > > By the way, some crazy idea that occurred to me: What about > > incrementally scrubbing a page which has been assigned previously to > > this CPU, while spinning inside spinlocks (or busy-waiting somewhere > > else)? > > Crazy idea, indeed. spinlocks are like safety belts: You should > actually not need them in the normal case, but they will save your butt > and you'll be glad you have them, when they actually trigger. > > So if you are making serious progress here, you have just uncovered > a spinlockcontention problem in the kernel ;-)
You'd also be evicting the cache contents thus making the lock contention case even worse. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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