lundi 24 mars 2014

[Q] High PING Latency From PC To MotoG topic




I just bought two Moto G's to use in my research in computer networking.

As a test, I pinged one on them from a Windows 7 PC over WiFI, and got really high latency, consistently between 10-500 milliseconds. I pinged the other one, and got nearly identical results. I then fired up an old laptop running Windows XP, bunny, in another part of my lab, and for bunny, the ping was consistently under 1 millisecond. I tried pinging two other pristine Windows 7 laptops, in different parts of my lab, and again, the pings were always under 3 milliseconds. I tried moving the MotoG's around the lab, with same results, no matter their location.

Wi-Fi router is stock Linksys WRT54G.

Both MotoG's are virgin, totally unloaded, as they had been turned on less than 3 minutes each.

Frankly, the reason I did the PING in the first place is because I was curious to see if there might be an issue with latency through WiFi path on Android phones.

Does anyone else experience latency > 10 milliseconds? Is this considered normal? Do all Android phones exhibit such high latency?


C:\>ping 192.168.1.101

Pinging 192.168.1.101 with 32 bytes of data:
Reply from 192.168.1.101: bytes=32 time=417ms TTL=64
Reply from 192.168.1.101: bytes=32 time=30ms TTL=64
Reply from 192.168.1.101: bytes=32 time=256ms TTL=64
Reply from 192.168.1.101: bytes=32 time=180ms TTL=64

Ping statistics for 192.168.1.101:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 30ms, Maximum = 417ms, Average = 220ms

C:\>ping bunny

Pinging bunny [192.168.1.105] with 32 bytes of data:
Reply from 192.168.1.105: bytes=32 time=2ms TTL=128
Reply from 192.168.1.105: bytes=32 time=1ms TTL=128
Reply from 192.168.1.105: bytes=32 time=2ms TTL=128
Reply from 192.168.1.105: bytes=32 time=1ms TTL=128

Ping statistics for 192.168.1.105:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 2ms, Average = 1ms

C:\>





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