Messages in this thread |  | | Date | Sat, 7 Sep 2002 13:03:34 -0700 | | From | William Lee Irwin III <> | | Subject | Re: LMbench2.0 results |
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Paolo Ciarrocchi wrote: >> Hi all, >> I've just ran lmbench2.0 on my laptop. >> Here the results (again, 2.5.33 seems to be "slow", I don't know why...)
On Sat, Sep 07, 2002 at 09:20:56AM -0700, Andrew Morton wrote: > The fork/exec/mmap slowdown is the rmap overhead. I have some stuff > which partialy improves it.
Hmm, Where does it enter the mmap() path? PTE instantiation is only done for the VM_LOCKED case IIRC. Otherwise it should be invisible.
Perhaps testing with overcommit on would be useful.
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