[Trac #915] iperf/tcp fails between meshed xo's

Zarro Boogs per Child bugtracker at laptop.org
Wed Mar 21 17:02:28 EDT 2007


#915: iperf/tcp fails between meshed xo's
----------------------+-----------------------------------------------------
 Reporter:  jcardona  |        Owner:  marcelo 
     Type:  defect    |       Status:  reopened
 Priority:  high      |    Milestone:  BTest-3 
Component:  wireless  |   Resolution:          
 Keywords:            |  
----------------------+-----------------------------------------------------
Changes (by carrano):

  * status:  closed => reopened
  * resolution:  fixed =>

Comment:

 It seems we have iperf stalls back, when using the msh0 interface.

 ----------------------------
 I used the following script:

 # My ip is 10.0.0.2, iperf server IP is 10.0.0.1
 for dur in 10 30 60 120
 do
         i=0
         fim=0
         while [ $fim != "1" ]
         do
                 let i=$i+1
                 iperf -c 10.0.0.1 -i 1 -t $dur| tee iperf-$dur-$i.txt
                 sleep 1
                 if [ $i == "20" ]; then fim=1; fi
         done
         sleep 120
 done
 ----------------------------

 When I use the eth0 interface (iwconfig eth0 mode ad-hoc essid test;
 ifconfig eth0 10.0.0.1) everything works fine. No stalls.

 But if I use the msh0 interface instead, it stalls. I did it theee times.
 first try: stalled after 30 loops (20 execs of 10 seconds and 10 of 30
 seconds)
 second try: stalled after 38 loops (20 execs of 10 seconds and 18 of 30
 seconds)
 third try: stalled after 20 loops (20 execs of 10 seconds iperf)

 I can send the output files, if you think they are useful.

-- 
Ticket URL: <http://dev.laptop.org/ticket/915#comment:18>
One Laptop Per Child <http://laptop.org/>



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