Messages in this thread | | | Subject | Re: [Patch 3/3] prepopulate/cache cleared pages | From | Arjan van de Ven <> | Date | Fri, 24 Feb 2006 10:15:42 +0100 |
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> Arjan, just to get an idea of your workload: obviously it is a mix of > read and write on the mmap_sem (read only will not really benefit from > reducing lock width because cacheline transfers will still be there).
yeah it's threads that each allocate, use and then free memory with mmap()
> Is it coming from brk() from the allocator? Someone told me a while ago > that glibc doesn't have a decent amount of hysteresis in its allocator > and tends to enter the kernel quite a lot... that might be something > to look into.
we already are working on that angle; I just posted the kernel stuff as a side effect basically
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