Re: Linux 2.6.9 pktgen module causes INIT process respawning andsickness

[Jeff V. Merkey]

Additionally, when packets sizes 64, 128, and 256 are selected, pktgen 
is unable to achieve > 500,000 pps (349,000 only on my system).
A Smartbits generator can achieve over 1 million pps with 64 byte 
packets on gigabit.  This is one performance
issue for this app.  However, at 1500 and 1048 sizes, gigabit saturation 
is achievable. 

Jeff

Jeff V. Merkey wrote:

> With pktgen.o configured to send 123MB/S on a gigabit on a system 
> using pktgen set to the following parms:
>
> pgset "odev eth1"
> pgset "pkt_size 1500"
> pgset "count 0"
> pgset "ipg 5000"
> pgset "src_min 10.0.0.1"
> pgset "src_max 10.0.0.254"
> pgset "dst_min 192.168.0.1"
> pgset "dst_max 192.168.0.254"
>
> After 37 hours of continual packet generation into a gigabit 
> regeneration tap device,
> the server system console will start to respawn the INIT process about 
> every 10-12
> hours of continuous packet generation.
>
> As a side note, this module in Linux is extremely useful and the "USE 
> WITH CAUTION" warnings
> are certainly will stated.  The performance of this tool is excellent.
>
> Jeff
>
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