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):

 Ok, thanks! After ./wmiconfig -i eth0 --power maxperf I get

 {{{
 64 bytes from 192.168.2.1: icmp_seq=219 ttl=64 time=7.45 ms
 64 bytes from 192.168.2.1: icmp_seq=220 ttl=64 time=15.2 ms
 64 bytes from 192.168.2.1: icmp_seq=221 ttl=64 time=5.51 ms
 64 bytes from 192.168.2.1: icmp_seq=222 ttl=64 time=5.48 ms
 64 bytes from 192.168.2.1: icmp_seq=223 ttl=64 time=15.3 ms
 64 bytes from 192.168.2.1: icmp_seq=224 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=225 ttl=64 time=10.0 ms
 64 bytes from 192.168.2.1: icmp_seq=226 ttl=64 time=11.3 ms
 64 bytes from 192.168.2.1: icmp_seq=227 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=228 ttl=64 time=15.3 ms
 64 bytes from 192.168.2.1: icmp_seq=229 ttl=64 time=6.90 ms
 64 bytes from 192.168.2.1: icmp_seq=230 ttl=64 time=14.7 ms
 64 bytes from 192.168.2.1: icmp_seq=231 ttl=64 time=15.3 ms
 64 bytes from 192.168.2.1: icmp_seq=232 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=233 ttl=64 time=15.4 ms
 64 bytes from 192.168.2.1: icmp_seq=234 ttl=64 time=10.1 ms
 64 bytes from 192.168.2.1: icmp_seq=235 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=236 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=237 ttl=64 time=9.91 ms
 64 bytes from 192.168.2.1: icmp_seq=238 ttl=64 time=10.1 ms
 64 bytes from 192.168.2.1: icmp_seq=239 ttl=64 time=10.0 ms
 64 bytes from 192.168.2.1: icmp_seq=240 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=241 ttl=64 time=10.2 ms
 64 bytes from 192.168.2.1: icmp_seq=242 ttl=64 time=6.56 ms
 64 bytes from 192.168.2.1: icmp_seq=243 ttl=64 time=17.0 ms
 64 bytes from 192.168.2.1: icmp_seq=244 ttl=64 time=14.1 ms
 64 bytes from 192.168.2.1: icmp_seq=245 ttl=64 time=15.4 ms
 64 bytes from 192.168.2.1: icmp_seq=246 ttl=64 time=10.2 ms
 }}}

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Ticket URL: <https://docs.openmoko.org/trac/ticket/2320#comment:3>
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