On 12/16/2015 12:10 AM, Alexei Starovoitov wrote: ...
this rounding to cache line is great for performance, but it's extra memory upfront which may not be needed. The per-allocation is a classic performance vs memory trade-off. In other cases it may hurt. So could you change the patch to do pre-allocation only when requested by user space via extra flag for hash map or via new BPF_MAP_TYPE_HASH_PREALLOC type? Not sure yet whether flag or new type is better. I guess implementation will dictate.
Was also thinking about this, probably new map type makes sense. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
