pre-2.1.90-2 other network feature

Andrea Arcangeli (arcangeli@mbox.queen.it)
Mon, 16 Mar 1998 23:51:52 +0100 (CET)


I noticed that running tcpspray over the loopback device every second or
more I get always >20Mbyte/sec of througput, but if I run it faster I get
always some kbyte/sec. Is it normal?

andrea@arca:~/devel/kernel/linux/arch/i386/kernel$ while :; do tcpspray arca; sleep 1; done

Transmitted 102400 bytes in 0.005229 seconds (19124.116 kbytes/s)

Transmitted 102400 bytes in 0.004443 seconds (22507.315 kbytes/s)

Transmitted 102400 bytes in 0.004516 seconds (22143.490 kbytes/s)

Transmitted 102400 bytes in 0.004490 seconds (22271.715 kbytes/s)

Transmitted 102400 bytes in 0.004446 seconds (22492.128 kbytes/s)

Transmitted 102400 bytes in 0.004526 seconds (22094.565 kbytes/s)

Transmitted 102400 bytes in 0.004417 seconds (22639.801 kbytes/s)

Transmitted 102400 bytes in 0.004426 seconds (22593.764 kbytes/s)

andrea@arca:~/devel/kernel/linux/arch/i386/kernel$ while :; do tcpspray arca; done

Transmitted 102400 bytes in 0.005320 seconds (18796.992 kbytes/s)

Transmitted 102400 bytes in 0.999235 seconds (100.077 kbytes/s)

Transmitted 102400 bytes in 0.999293 seconds (100.071 kbytes/s)

Transmitted 102400 bytes in 0.999281 seconds (100.072 kbytes/s)

Transmitted 102400 bytes in 0.998502 seconds (100.150 kbytes/s)
...

You can found tcpspray sources from
andrea@arca:~/devel/kernel/linux/arch/i386/kernel$ dpkg -S tcpspray
netdiag: /usr/bin/tcpspray
netdiag: /usr/man/man1/tcpspray.1.gz
andrea@arca:~/devel/kernel/linux/arch/i386/kernel$ dpkg -s netdiag | grep Section
Section: net

...here:

ftp://ftp.debian.org/debian/hamm/hamm/source/net/netdiag*.orig.tar.gz

Andrea[s] Arcangeli

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