Thank you for your quick response:

I run the 3.4.3-2 version. Installing the latest stable version didnt work. 

user@Sender:~$ svn co svn://svn.synfin.net/tcpreplay/branches/3.4 tcpreplay-3.4 
svn: Can't connect to host 'svn.synfin.net': Connection refused

Downloading the tar.gz file and compiling from source didnt work:
checking for libpcap... configure: error: Unable to find matching library for 
header file in /usr

The packets specified and the packets truly sent differ a lot. 

In the beginning:
Next transmit will be at 326 pps at 2013_03_21 00:01:09
Actual: 97800 packets (5868000 bytes) sent in 305.52 seconds
Rated: 19206.6 bps, 0.15 Mbps, 320.11 pps

After a while:

Next transmit will be at 299800 pps at 2013_03_21 03:17:55
Actual: 6826050 packets (409563000 bytes) sent in 138.54 seconds
Rated: 2956279.8 bps, 22.55 Mbps, 49271.33 pps
Statistics for network device: eth0
        Attempted packets:         6826050
        Successful packets:        6826050
        Failed packets:            0
        Retried packets (ENOBUFS): 0
        Retried packets (EAGAIN):  0


I send the same ARP broadcast packets. 


On Mar 22, 2013, at 4:31 PM, Aaron Turner wrote:

> 
> 
> On Fri, Mar 22, 2013 at 5:57 AM, Rawi Ramdhan <rawi_ramd...@hotmail.com> 
> wrote:
> Hi All,
> 
> I have an issue with TCPReplay. I increment my PPS every N seconds. But the 
> traffic is being transmitted in weird way. 
> 
> I expect it to be linearly  but as you can see in the graph, its nothing like 
> that.  I've run multiple tests but the they all have the same 
> characteristics. 
> 
> [code]
> 
> #!/bin/bash
> for n in {1000..2000000..5000}
> do
> timer=30
> max=$(( $n * $timer ))
> 
> tcpreplay -p $n -l 9999 -L $max -q -i eth0 total.pcap >> results4.txt &
> 
>    my_PID=$!
>    sleep $timer
>    kill -15 $my_PID
> done
> 
> [/code]
> 
> What version of tcpreplay?  what does tcpreplay report in terms of packet 
> rates?
>  
> 
> -- 
> Aaron Turner
> http://synfin.net/         Twitter: @synfinatic
> 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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> Support Information: http://tcpreplay.synfin.net/trac/wiki/Support


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