Hello, Christoph. On Thu, Dec 04, 2014 at 02:28:10PM -0600, Christoph Lameter wrote: > Well this is not a common use case and that is not what the per cpu > allocator was designed for. There is bound to be signifcant fragmentation > with the current design. The design was for rare allocations when > structures are initialized. My unverified gut feeling is that fragmentation prolly is a lot less of a problem for percpu allocator given that most percpu allocations are fairly small. On the other hand, we do wanna pack them tight as percpu memory is really expensive space-wise. I could be wrong tho. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>