#12151 NORM 13.1.0: losses and high latency caused by NetworkManager with 8787 wireless module

[Zarro Boogs per Child]

#12151: losses and high latency caused by NetworkManager with 8787 wireless module
---------------------------------------+------------------------------------
           Reporter:  shep             |       Owner:  shep         
               Type:  defect           |      Status:  new          
           Priority:  normal           |   Milestone:  13.1.0       
          Component:  network manager  |     Version:  not specified
         Resolution:                   |    Keywords:               
        Next_action:  never set        |    Verified:  0            
Deployment_affected:                   |   Blockedby:               
           Blocking:                   |  
---------------------------------------+------------------------------------

Comment(by shep):

 With kernel patch c83171b43d2529e5a93b1621b1b51f5b76aa38fa from 3.5 weeks
 ago which crudely disables the creation of the uap0 interface, things seem
 pretty stable.

 The remaining problem is the latency introduced by the scans, which when
 doing 1 Hz pings typically do not lead to any packets dropped but do delay
 some packets for as long as it takes the scan to happen (6 to 10 seconds
 to cover both bands).   Maybe this ticket should be split into two new
 tickets...  one for getting the right fix for mwifiex or NetworkManager to
 properly handle the presence of the uap0 interface (so we don't have to
 carry the crude patch that disables the uap0 interface), and another
 ticket to track the problem of delayed packets while the scan is
 happening.

 A patch was posted to linux-wireless which is supposed to improve the
 delayed packets while scanning problem.   We should investigate that
 patch.

-- 
Ticket URL: <http://dev.laptop.org/ticket/12151#comment:10>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system