[Click] [click] Why fwd_delivery_rate and rev_delivery_rate are so low

[欧阳鑫]

Hi, everyone.
       I am running roofnet experiments on 2 Ubuntu hosts with 2.6.32-26
kernel. Both are AR5416 cards with ath9k driver, and I have updated ath9k
driver to compat-wireless-2011-01-15, and also patched. All cards run in
Monitor mode. They can ping each other with vitural interface srcr. But now
I have a question
is that I do not know why fwd_delivery_rate and rev_delivery_rate are so
low.
       The two PCs are very near, the distance between them is about 4
meters. Command "read srcr/ets.bcast_stats" as follows:
       200 Read handler 'srcr/es.bcast_stats' OK
       DATA 805
       5.50.202.240 20-7C-8F-32-CA-F0 seq 1295576865 period 30000 tau 300000
sent 131 last_rx 1.357288
       5.50.202.240 20-7C-8F-32-CA-F0 [ 2 60 0 80 201 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 12 60 10 70 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 2 1500 90 0 -1 -1 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 4 1500 100 50 200 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 11 1500 80 60 202 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 22 1500 40 60 202 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 12 1500 20 70 204 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 18 1500 20 80 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 24 1500 20 80 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 36 1500 10 80 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 48 1500 10 80 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 72 1500 10 90 203 0 ]
       5.50.202.240 20-7C-8F-32-CA-F0 [ 96 1500 10 80 203 0 ]
      the fwd_delivery_rate and rev_delivery_rate are so low, but why it is
so?

Yours
Yuan.