On Tue, Feb 26, 2002 at 05:02:45PM -0800, Radhakrishnan Vijay wrote: > I am using the tc functionality provided by iproute2 > to setup classes and queueing disciplines. I have a > requirement to determine the queueing delay of each > packet belonging to a particular class so that i can > measure the average queueing delay over a time > interval for a particular traffic class. I would be > grateful if somebody could give me pointers on how i > possibly can achieve this. I suspect that i would have > to modify the source code of iproute2 , but am not too > sure on what segment of the code i should be > modifying. Right now the actual delay is not measured by the kernel, so I don't see how you would get at it. You could calculate the effective class bandwidth and multiply that by the average qlength, but that would be pretty indirect. Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services http://www.tk the dot in .tk http://lartc.org Linux Advanced Routing & Traffic Control HOWTO