Messages in this thread | | | Date | Thu, 29 Jun 2017 12:05:50 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH v2] mm: Add SLUB free list pointer obfuscation |
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On Sun, 25 Jun 2017, Kees Cook wrote:
> The difference gets lost in the noise, but if the above is sensible, > it's 0.07% slower. ;)
Hmmm... These differences add up. Also in a repetative benchmark like that you do not see the impact that the additional cacheline use in the cpu cache has on larger workloads. Those may be pushed over the edge of l1 or l2 capacity at some point which then causes drastic regressions.
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