Messages in this thread | | | Date | Thu, 24 Mar 2011 12:30:20 -0500 | From | Jack Steiner <> | Subject | Re: [PATCH RFC] x86: avoid atomic operation in test_and_set_bit_lock if possible |
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> > This cacheline bouncing was actually observed and measured > on SGI UV systems, but I'm not certain we're permitted to publish > that data. I'm copying the two SGI guys who had reported that > issue (and the special case fix, which Nikanth simply generalized) > to us, for them to decide.
We frequently run into the cacheline bouncing issues. I don't have the data handy that you refer to, but feel free to publish it.
--- jack
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