Messages in this thread | | | Date | Mon, 16 Jul 2007 11:24:35 +0200 | From | Nick Piggin <> | Subject | Re: [rfc][patch 2/2] x86_64: FIFO ticket spinlocks |
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On Mon, Jul 16, 2007 at 10:16:54AM +0100, Alan Cox wrote: > > however the difference is quite small on Core2 and Opteron when working out of > > cache, and becomes almost insignificant even on P4 when the lock misses cache. > > trylock is more significantly slower, but they are relatively rare. > > This has a 255 processor limit (worst case). That should probably be > clearly documented for the future.
Yeah good point. I added an #error for it. - 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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