Messages in this thread |  | | | Date | Wed, 28 Mar 2007 14:00:44 -0700 (PDT) | | From | Christoph Lameter <> | | Subject | Re: [RFC] i386: Remove page sized slabs for pgds and pmds |
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On Wed, 28 Mar 2007, William Lee Irwin III wrote:
> Getting the relevant results without tremendous amounts of noise from > other kernel activity needs something like lmbench's fault and fork() > microbenchmarks. Also, /proc/profile and/or oprofile results would be > useful here to get useful notions of what's happening performancewise, > in particular oprofile with L2 cache miss performance counters.
The machine had a minimal debian root and it was run on a serial console.
> it's in the noise. PMD and PTE caching are only pertinent to fork() > anyway, so the vast majority of your workload is unaffected, and it's
I'd be interested to see some numbers here. I still believe the situation to be better on IA64 and other platforms due to the larger page sizes containing many more cachelines which should make the effect bigger.
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