Ath9k bw and dynack

ackto is calculated by sending and receiving timestamps

ackto = ack_ts - st_ts->tstamp - st_ts->dur;

Two devices are on my desk, the same location, 20M bandwidth and 10M bandwidth, the difference between the time stamps sent and received is very different

ls :
bw 20M:
ack_ts = 9574642, tstamp = 9574536, dur = 52
9574642-9574642= 106

bw 10M:
ack_ts = 218056504, tstamp = 218056258, dur = 56
218056504-218056258=246

Does this look normal?

Looks like the same topic as this thread...

yes.But the problem is different