fast udp generator

[Robert Morris]

Werner,

We used Click to generate UDP packets. Click is good for this because
it does not need to cross between user and kernel space and it avoids
interrupts by polling the device hardware.

Here's a reasonable Click configuration for sending Ethernet packets
out eth0 quickly:

FastUDPSource(RATE, COUNT, 60, SRCETH, SRCIP, 1001,
              DSTETH, DSTIP, 1002, 1)
  -> ToDevice(eth0);
PollDevice(eth0) -> Discard;

You want to change RATE to the number of packets per second you want,
COUNT to the total number of packets you want, SRCETH to the source
ethernet address (e.g. 1:2:3:4:5:6), SRCIP to the source IP address
(e.g. 10.0.0.1), and DSTETH and DSTIP to the destination Ethernet and
IP addresses.

This Click configuration can generate 60-byte packets at the maximum
possible 100-megabit Ethernet rate on our 450 mHz PCs; that's about
148,000 packets per second. With Intel gigabit ethernet devices and a
800 mHz PC Click can send 1,000,000 60-byte packets per second.

Robert

> Date: Thu, 19 Apr 2001 11:19:47 +0200
> From: Werner =?iso-8859-1?Q?R=E4tscher?= <werner.raetscher at mchp.siemens.de>
> To: click at amsterdam.lcs.mit.edu
> Subject: fast udp generator
> 
> Hello,
> 
> I have to do some performance measurements on routers and I need
> therefore a fast udp packet generator. I have tried the tools MGEN and
> RUDE, but on a 650 MHz Pentium I get only 40,000 64 byte packets per
> second. I have read in your click-paper that the tool you  have used for
> the experimental setup generates up to 147,900 UDP packets per second on
> the source host. What kind of pc did you use for the source host and
> which UDP generator is that?
> 
> Kindly regards,
> 
> Werner Raetscher