#3341 NORM Untriag: Failure to transfer large files over mesh interface while associated

[Zarro Boogs per Child]

#3341: Failure to transfer large files over mesh interface while associated
-----------------------+----------------------------------------------------
  Reporter:  jcardona  |       Owner:  jcardona                         
      Type:  defect    |      Status:  new                              
  Priority:  normal    |   Milestone:  Untriaged                        
 Component:  wireless  |     Version:  Development build as of this date
Resolution:            |    Keywords:                                   
  Verified:  0         |  
-----------------------+----------------------------------------------------
Changes (by jcardona):

 * cc: dcbw, rckoksi, mbletsas (added)


Comment:

 I reproduced with build 573 (wireless firmware 5.110.17.p3) with slightly
 different results.  In essence, without NM transfers also stall due to
 loss of association on one of the two hosts.

 On xo1:

 {{{
 -bash-3.2# dd if=/dev/zero of=bf10M bs=1024 count=$[100*1024]
 104857600 bytes (105 MB) copied, 42.2111 s, 2.5 MB/s
 }}}

 On xo2:
 {{{
 -bash-3.2# sftp 169.254.7.208:bf10M
 Connecting to 169.254.7.208...
 Fetching /root/bf10M to bf10M
 /root/bf10M                                    45%   23MB 416.7KB/s
 01:09 ETA
 /root/bf10M                                    46%   24MB 353.0KB/s
 01:19 ETA
 /root/bf10M                                    74%   39MB 441.8KB/s -
 stalled -
 -bash-3.2# sftp 169.254.7.208:bf10M
 Connecting to 169.254.7.208...
 root at 169.254.7.208's password:
 Fetching /root/bf10M to bf10M
 /root/bf10M                                     6% 3168KB   1.1MB/s
 00:46 ETA
 /root/bf10M                                     8% 4672KB 617.8KB/s
 01:17 ETA
 /root/bf10M                                    27%   14MB 800.3KB/s
 00:47 ETA
 /root/bf10M                                    32%   17MB 230.6KB/s -
 stalled -
 /root/bf10M                                    32%   17MB   9.8KB/s -
 stalled -
 /root/bf10M                                    32%   17MB   8.8KB/s -
 stalled -Killed by signal 15.
 }}}

 Killed NM on both machines and retried:
 {{{
 -bash-3.2# killall NetworkManager
 -bash-3.2# iwconfig eth0 mode managed essid cozybit
 -bash-3.2# sftp 169.254.7.208:bf10M
 Connecting to 169.254.7.208...
 Fetching /root/bf10M to bf10M
 /root/bf10M                                     8% 4512KB 979.5KB/s
 00:49 ETA
 /root/bf10M                                    17% 9248KB   1.0MB/s
 00:41 ETA
 /root/bf10M                                    35%   18MB   1.1MB/s
 00:30 ETA
 /root/bf10M                                    52%   27MB   1.1MB/s
 00:22 ETA
 /root/bf10M                                    68%   35MB   1.1MB/s
 00:14 ETA
 /root/bf10M                                    83%   43MB   1.1MB/s
 00:07 ETA
 /root/bf10M                                    97%   50MB 862.8KB/s
 00:01 ETA
 /root/bf10M                                    97%   50MB 270.8KB/s -
 stalled -
 /root/bf10M                                    97%   50MB  19.4KB/s -
 stalled -
 /root/bf10M                                    97%   50MB   3.2KB/s -
 stalled -
 /root/bf10M                                    97%   50MB   2.9KB/s -
 stalled -Killed by signal 15.
 -bash-3.2# iwconfig
 lo        no wireless extensions.

 msh0      IEEE 802.11b/g  Nickname:"Mesh"
           Mode:Repeater  Frequency:2.437 GHz  Bit Rate:1 Mb/s   Tx-
 Power=13 dBm
           Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B
           Encryption key:off
           Power Management:off
           Link Quality=100/100  Signal level=-256 dBm  Noise level=-96 dBm
           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:21476
           Tx excessive retries:7255  Invalid misc:13155   Missed beacon:0

 eth0      IEEE 802.11b/g  ESSID:"cozybit"  Nickname:"MRVL-USB8388"
           Mode:Managed  Frequency:2.437 GHz  Access Point:
 00:13:10:FC:57:FF
           Bit Rate:1 Mb/s   Tx-Power=13 dBm
           Retry limit:8   RTS thr=2347 B   Fragment thr=2346 B
           Encryption key:off
           Power Management:off
           Link Quality=91/100  Signal level=-49 dBm  Noise level=-90 dBm
           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:18700
           Tx excessive retries:8754  Invalid misc:15576   Missed beacon:0

 ... but xo2 association.
 }}}


 Retried several times.  I each test case the transfer stalls because one
 of the two nodes lost association.

-- 
Ticket URL: <https://dev.laptop.org/ticket/3341#comment:1>
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