Re: [SLUB 0/3] SLUB: The unqueued slab allocator V4

On Fri, 9 Mar 2007, Mel Gorman wrote:

The results without slub_debug were not good except for IA64. x86_64 and ppc64
both blew up for a variety of reasons. The IA64 results were

Yuck that is the dst issue that Adrian is also looking at. Likely an issue
with slab merging and RCU frees.

KernBench Comparison
--------------------
2.6.21-rc2-mm2-clean 2.6.21-rc2-mm2-slub
%diff
User CPU time 1084.64 1032.93 4.77%
System CPU time 73.38 63.14 13.95%
Total CPU time 1158.02 1096.07 5.35%
Elapsed time 307.00 285.62 6.96%

Wow! The first indication that we are on the right track with this.

AIM9 Comparison
2 page_test 2097119.26 3398259.27 1301140.01 62.04% System Allocations & Pages/second

Wow! Must have all stayed within slab boundaries.

8 link_test 64776.04 7488.13 -57287.91 -88.44% Link/Unlink Pairs/second

Crap. Maybe we straddled a slab boundary here?
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