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Slower than expected 802.11n wireless network speeds

Fresh7 days ago
Mar 15, 20266213 views
Confidence Score0%
0%

Problem

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: That's a typical result. Running parallel client threads does…

Error Output

C:\>iperf -c 10.0.0.123 -t 30
------------------------------------------------------------
Client connecting to 10.0.0.123, TCP port 5001
TCP window …

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix for: Slower than expected 802.11n wireless network speeds

Low Risk

The rule of thumb for TCP throughput over Wi-Fi is that you can get 50-60% of your signaling rate. So in your case, you should see 75-90 megabits per second of TCP throughput. Wait, why is your TCP window size just 8 KibiBytes? That strikes me as an…

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Environment