Re: Packets dropped !!!

[Jim F. <fer...@nc...>]

At 04:33 PM 2/22/2004 -0600, you wrote:
>This means that packets were dropped from the logging. Not that the
>packets were not sent on the wire. Due to the high CPU utilization of
>Iperf it is hard to listen to all the traffic with TCPDump which is also
>on the high side of utilization especially if you are dumping to disk or
>gziping or other entensive tasks. If Iperf reports no lost datagrams then
>there were no lost datagrams between the two copies of Iperf running not



>that some other app saw them all. When in doubt believe Iperf.   <<<---

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>Kevin
>
>On Sun, 22 Feb 2004, Massimo Onorati wrote:
>
> > I am using  Jperf measurement tool in UDP mode, it shows lost datagrams
> > = 0  but if  I use the following command :"tcpdump -i eth2"  the system
> > tells me : "1020 packets dropped by  Kernel".  Why ?
> >
> > Thanks in advaqnce.
> >