I have an ALIX with 2 Wistron DCMA-82 radios running Voyage 0.5.2 fully
upgraded. Ath0 is a production backhaul and at the time of testing
(this morning) was averaging about 5-8mbs. The plan was to have ath1
also carry backhaul traffic for increased capacity (and possible bonding
later on). The other end of the two links are separate systems mounted
less than 1m a part at about 7300m - perfect LOS.
Testing the second (new) ath1 link with iperf I'm able to get right at
30mbs. However, during the iperf test on ath1, ath0 data rate drops
from the 5-8mbs to a few, < 20, kbs returning back to its previous rate
immediately after iperf terminates. Top also shows ksoftirqd/0 going
from 0% to 70%+ during the 10s iperf.
Running iperf on ath0 consistently returns numbers indicting the free
overhead above the base traffic level.
Running iperf -s on the board and hitting it on the ethernet side also
all but stops the input on ath0 during the run.
I had hoped to have the two radios happily handle 25+ mbs in parallel
and route out the 100mbs ethernet port but am convinced this will not
work as hoped.
Has anyone run two radios at full capacity simultaneously on other
hardware? Would this be a kernel or driver issue? In the short term, I
will mount another ALIX system with a single radio but would dearly love
to make the above arrangement work.
Regards,
Edwin
--
<=+=+=+==+=+=+==+=+=+=+=+=+=+=+=>
Edwin Whitelaw, P.E.
New River Valley Unwired, LLC
2200 Lonesome Dove Dr
Christiansburg, VA 24073
540-239-0318
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