Messages in this thread |  | | | Date | Fri, 26 Dec 2003 03:56:47 -0800 | | From | William Lee Irwin III <> | | Subject | Re: 2.6.0 Huge pages not working as expected |
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On Fri, Dec 26, 2003 at 10:54:33AM +0000, Nick Craig-Wood wrote: > I wrote a little test program to show the benefits of huge pages by > reducing TLB thrashing - it fills up 16 MB with sequential numbers > then adds them with different strides - very much the sort of thing > FFTs do. However huge pages show a performance decrease not increase > for large strides! For smaller ones there is a small speedup. > I've been testing on > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 8 > model name : Pentium III (Coppermine) P-III has something like 2 TLB entries usable for large pages. I recommend trying this again on a P-IV.
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