Slower than expected 802.11n wireless network speeds
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by Ian
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Published on 2010-03-22T01:21:00Z
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2010/03/22
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I have two ASUS laptops running Windows 7 connected wirelessly via 802.11n at 150 Mbit, as reported by Task Manager. The router is Netgear WNDR3700.
When testing the wireless connection speed using iperf, I'm not getting nearly 150 Mbit:
C:\>iperf -c 10.0.0.123 -t 30
------------------------------------------------------------
Client connecting to 10.0.0.123, TCP port 5001
TCP window size: 8.00 KByte (default)
------------------------------------------------------------
[148] local 10.0.0.116 port 53819 connected with 10.0.0.123 port 5001
[ ID] Interval Transfer Bandwidth
[148] 0.0-30.0 sec 41.2 MBytes 11.5 Mbits/sec
That's a typical result. Running parallel client threads does not increase the overall total speed.
Why would I only be getting 11.5 Mbit on a 150 Mbit connection?
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