On Wed, 2014-12-03 at 13:14 +0800, Hayes Wang wrote: > If the data size is more than half of the AGG_BUG_SZ, allocate a new > rx buffer and use skb_clone() to avoid the memory copy. > > The original method is that allocate the memory and copy data for each > packet in a rx buffer. The new one is that when the data size for a rx > buffer is more than RX_THRESHOLD_CLONED, allocate a new rx buffer and > use skb_clone for each packet in the rx buffer. According to the > experiment, the new mothod has better performance. Better performance for what workload exactly ? cloning in rx path has many drawbacks, with skb->truesize being usually wrong. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
