Messages in this thread | | | Date | Mon, 4 Aug 2008 16:21:46 +0100 | From | Jamie Lokier <> | Subject | Re: No, really, stop trying to delete slab until you've finished making slub perform as well |
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Jamie Lokier wrote: > Vaguely on this topic, has anyone studied the effects of SLAB/SLUB > etc. on MMUless systems?
The reason is that MMU-less systems are extremely sensitive to fragmentation. Every program started on those systems must allocate a large contiguous block for the code and data, and every malloc >1 page is the same. If memory is too fragmented, starting new programs fails.
The high-order page-allocator defragmentation lately should help with that.
The different behaviours of SLAB/SLUB might result in different levels of fragmentation, so I wonder if anyone has compared them on MMU-less systems or fragmentation-sensitive workloads on general systems.
Thanks, -- Jamie
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