NDT-DEV email list created

Status: New
Owner: ----
Labels: Type-Defect Severity-Medium

New issue 29 by sekharnv73: Throughput detected is more than the limit  
displayed in moredetails window.
http://code.google.com/p/ndt/issues/detail?id=29

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 client TCP parameters as bellow
        echo 1 > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
        echo 131071 > /proc/sys/net/core/wmem_max
        echo 131071 > /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. Set the server TCP parameters as bellow.
        echo 0 > /proc/sys/net/ipv4/tcp_moderate_rcvbuf
        echo 131071 > /proc/sys/net/core/wmem_max
        echo 131071 > /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

5. Open the browser and open the NDT home page.
6. Start test by clicking Start button and check the results on main window
and in more details window.

What is the expected output? What do you see instead?
Normally the throughput detected should be less than or equal to the
throughput calculated in the more details window.
Server receive buffer limiting the throughput is less where as the outbound
throughput displayed in main window is more.

What version of the product are you using? On what operating system?
NDT server 3.6.1
Client : Linux (Fedora 8)

Please provide any additional information below.

Attachments:
        Outbound Throughput.png  224 KB
        Outbound throughput1.png  235 KB

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