netdev
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: pktgen

from [Lennert Buytenhek] [Permanent Link][Original]
To: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
Subject: Re: pktgen
From: Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
Date: Sat, 27 Nov 2004 14:53:54 +0100
Cc: hadi@xxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <16808.28005.74903.881087@robur.slu.se>
References: <20041111233507.GA3202@xi.wantstofly.org> <20041124161848.GA18059@xi.wantstofly.org> <16804.48120.375307.718766@robur.slu.se> <20041124170948.GC18059@xi.wantstofly.org> <16804.60621.990421.525393@robur.slu.se> <20041125030450.GA24417@xi.wantstofly.org> <16805.40983.937641.670275@robur.slu.se> <20041127002841.GA17184@xi.wantstofly.org> <20041127004325.GA17401@xi.wantstofly.org> <16808.28005.74903.881087@robur.slu.se>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.4.1i 
On Sat, Nov 27, 2004 at 01:04:53PM +0100, Robert Olsson wrote:

> 60    825789
> 64    748975
> 68    729149
> 72    719721
> 76    720204
> 80    720127
> 84    702722
> 88    702799
> 92    705107
> 96    701711
> 100   703858
> 104   692120
> 108   696139
> 112   708936
> 116   697780
> 120   677887
> 124   678158
> 128   739290
> 132   737070
> 136   736894
> 140   737645
> 144   737816
> 148   682755
> 152   648547
> 156   646464

This part is strange.  In my case the pps rate for 132-byte packets is
100kpps lower than for 60-byte packets, in your case the curve is rather
flat.  Perhaps you're CPU-bound here (or hitting some NIC limit.)

Your data is a bit noisy -- can you rerun the test for the 60-200 byte
packet range but using 10M packets per run instead of 1M?


> 160   679270

From this point onwards your HW can saturate the pipe, this is the
boring part of the graph.


thanks,
Lennert
[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: crappy/good gigabit chipsets?, Francois Romieu
Next by Date:  tcp port reuse checking TCP_LISTEN state, Ilya Pashkovsky
Previous by Thread:  Re: pktgen, Robert Olsson
Next by Thread:  Re: pktgen, Lennert Buytenhek
Indexes:  [Date] [Thread] [Top] [All Lists]