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Network Diagnostic Tool
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Ifconfig output shows receive packets are dropped and the outbound throughput reported is low. #51

Open aaronmbr opened 9 years ago

aaronmbr commented 9 years ago

Original issue 51 created by aaronmbr on 2010-06-18T23:23:11.000Z:

What steps will reproduce the problem?

  1. Connect server and client in a 1GBit Switch
  2. Start both servers (fakewww and web100)
  3. Set the following tcp paramters in client. echo 1 > /proc/sys/net/ipv4/tcp_moderate_rcvbuf echo 4194304 > /proc/sys/net/core/wmem_max echo 4194304 > /proc/sys/net/core/rmem_max echo "4096 87380 4194304" > /proc/sys/net/ipv4/tcp_rmem echo "4096 16384 4194304" > /proc/sys/net/ipv4/tcp_wmem echo "1" > /proc/sys/net/ipv4/tcp_timestamps echo "1" > /proc/sys/net/ipv4/tcp_window_scaling echo "1" > /proc/sys/net/ipv4/tcp_sack echo "0" > /proc/sys/net/ipv4/tcp_ecn
  4. Check the ifconfig output.
  5. Click the start button to start the test and wait till client complete the test.
  6. Check the ifconfig output.

What is the expected output? What do you see instead? Outbound throughput should be around 1Gbit but the throughput reported is in the range 470Mbit to 700Mbit. Ifconfig output show RX packet drop.

What version of the product are you using? On what operating system? NDT server 3.6.3 Client : Linux (Ubuntu 9)

Please use labels and text to provide additional information.

aaronmbr commented 9 years ago

Comment #1 originally posted by aaronmbr on 2014-06-25T08:17:00.000Z:

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aaronmbr commented 9 years ago

Comment #2 originally posted by aaronmbr on 2014-06-25T08:27:35.000Z:

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