Openmoko Bug #2320: icmp ping RTT over wifi plotted over time forms a sawtooth wave

[Openmoko Public Trac]

#2320: icmp ping RTT over wifi plotted over time forms a sawtooth wave
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 Reporter:  lindi            |          Owner:  openmoko-kernel    
     Type:  defect           |         Status:  new                
 Priority:  normal           |      Milestone:                     
Component:  System Software  |        Version:  unspecified        
 Severity:  normal           |       Keywords:  wifi latency kernel
 Haspatch:  0                |      Blockedby:                     
Estimated:                   |    Patchreview:                     
 Blocking:                   |   Reproducible:  always             
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Comment(by lindi):

 Ping from WLAN AP to openmoko:

 {{{
 64 bytes from 192.168.2.114: seq=126 ttl=64 time=39.549 ms
 64 bytes from 192.168.2.114: seq=127 ttl=64 time=267.092 ms
 64 bytes from 192.168.2.114: seq=128 ttl=64 time=187.093 ms
 64 bytes from 192.168.2.114: seq=129 ttl=64 time=105.514 ms
 64 bytes from 192.168.2.114: seq=130 ttl=64 time=332.957 ms
 64 bytes from 192.168.2.114: seq=131 ttl=64 time=50.108 ms
 64 bytes from 192.168.2.114: seq=132 ttl=64 time=72.653 ms
 64 bytes from 192.168.2.114: seq=133 ttl=64 time=99.016 ms
 64 bytes from 192.168.2.114: seq=134 ttl=64 time=115.992 ms
 64 bytes from 192.168.2.114: seq=135 ttl=64 time=41.259 ms
 64 bytes from 192.168.2.114: seq=136 ttl=64 time=168.386 ms
 64 bytes from 192.168.2.114: seq=137 ttl=64 time=83.513 ms
 64 bytes from 192.168.2.114: seq=138 ttl=64 time=415.499 ms
 64 bytes from 192.168.2.114: seq=139 ttl=64 time=32.077 ms
 64 bytes from 192.168.2.114: seq=140 ttl=64 time=58.256 ms
 64 bytes from 192.168.2.114: seq=141 ttl=64 time=80.228 ms
 64 bytes from 192.168.2.114: seq=142 ttl=64 time=101.869 ms
 64 bytes from 192.168.2.114: seq=143 ttl=64 time=24.256 ms
 64 bytes from 192.168.2.114: seq=144 ttl=64 time=49.201 ms
 64 bytes from 192.168.2.114: seq=145 ttl=64 time=72.739 ms
 64 bytes from 192.168.2.114: seq=146 ttl=64 time=97.274 ms
 64 bytes from 192.168.2.114: seq=147 ttl=64 time=111.870 ms
 64 bytes from 192.168.2.114: seq=148 ttl=64 time=31.072 ms
 64 bytes from 192.168.2.114: seq=149 ttl=64 time=53.700 ms
 64 bytes from 192.168.2.114: seq=150 ttl=64 time=82.951 ms
 64 bytes from 192.168.2.114: seq=151 ttl=64 time=411.524 ms
 64 bytes from 192.168.2.114: seq=152 ttl=64 time=21.095 ms
 64 bytes from 192.168.2.114: seq=153 ttl=64 time=152.479 ms
 64 bytes from 192.168.2.114: seq=154 ttl=64 time=74.238 ms
 }}}

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2320#comment:1>
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