Re: Libpcap speed problem

[Aaron Turner <synfinatic () gmail com>]

On Mon, Jan 11, 2010 at 12:41 AM, Arif UGUREL <arifugurel () gmail com> wrote:
> Hi all,
> I'm using libpcap on OpenSuse 11.1. I have 2 interfaces ie. eth0 and
> eth1. I'm trying to capture packets from eth0 and send them thru eth1.
> I'm doing some logging operations before sending thru eth1. I developed
> a simple application, when i deployed the box to our network, everything
> is fine but after a while capture speed dramatically decreases and
> starts to miss packets. I'm checking memory and CPU usage but everything
> seems fine and total system memory is stable. I'm using an Intel board
> with 1.6 Ghz atom CPU and 1 GB of RAM. I think my hardware is enough for
> capturing 10Mbit network.
> I'm confused about the speed decrease after some time. What do u think,
> can it be the libpcap's internal problem, or my misuse.

Based on the info you've provided, I'm going to guess your code is the
problem.  I don't see this problem with tcpbridge which does the same
thing.


-- 
Aaron Turner
http://synfin.net/
http://tcpreplay.synfin.net/ - Pcap editing and replay tools for Unix & Windows
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
    -- Benjamin Franklin
"carpe diem quam minimum credula postero"
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