On Oct 21, "David Touitou" wrote:

> Mike Hunter wrote:
> 
> >>I guess faster CPU is still the answer ?
> >>At least, kernel/NIC is not the problem.
> >
> >What OS are you using (you may have said in an earlier mail, sorry)?  Both
> >linux and freebsd have ways of turning up the network buffer size.  
> 
> FreeBSD 4.9-RC
> 
> >See this post in the flow-tools list:
> >http://www.pairlist.net/pipermail/flow-tools/2003-February/001089.html  
> 
> I just stopped ntop and change the buffers as shown in the mail.
> Of course, a lot less free RAM (showed with top).
> 
> But ntop traffic stats are more and more funny...
> 2500% lost packets just after launch.
> And after 2 minutes :
>       Total                   321,377
>       Dropped by the kernel   770,577 [239.77 %]

That's extremely lame.  I wonder if there's a problem with 4.9...do you
have any way of testing this on 4.8?  You may want to write to a freebsd
mailing list....

The last thing I have to suggest is `rtprio`.

> I've just noticed ntop only shows ONE thread doing "ps aux" or "top", is 
> that normal (build with ./configure on FreeBSD 4.9-RC).

I think that ntop is single-threaded.

Mike
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