RE: How to do kernel packet forwarding performance analysys - please comment on my method

adamski (adam_lista_linux@poczta.onet.pl)
Fri, 27 Jun 2003 15:59:21 +0200

> i would like to start two flows through linux router: PHB EF and BE PHB..
> like voip and ftp or so...
>
> than i want to analyse what exactly happens ... since my theoretical
> analysys show delays (or latencies - from packet entering the NIC to
going
> out of the outgoing interface) of hundereds of usec (~200us) while
> experiments shows 5-10ms !!!!! with CBQ (configured like CBWFQ and LLQ)

Seems you have to add your own hooks for this and I guess you've seen
CONFIG_NET_PROFILE which does accurate measurements for network related
operations. It was long time since I used though...

.... could you please say something about CONFIG_NET_PROFILE and hooks you
have mentioned????

are there any documents ... related with hooks and CONFIG_NET_PROFILE

best regards

adam

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