Dear List, I made an effort to profile the performance of cake with perf in openwrt. perf was run on a WRT1900ACS router while downloading archlinux.iso via torrent in a LAN client. You can find the annotated sch_cake.c in the attachment as well as a performance histogram of sch_cake (percentages are relative to sch_cake). Hopefully people can take a look at it, and see if there are performance concerns. Best, George