Re: UDP Throughput Definition
- To: iperf-users --at-- dast.nlanr.net
- Subject: Re: UDP Throughput Definition
- From: "Marc Herbert" <Marc.Herbert --at-- free.fr>
- Date: Thu, 7 Feb 2008 14:39:21 +0100
- Content-disposition: inline
- Content-transfer-encoding: 7bit
- Content-type: text/plain; charset=ISO-8859-1
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:reply-to:sender:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; bh=JKIqDRHEYBazJhunkOVbwatPWTmp0VKfS40jXQZKgsg=; b=lFnL7ceVhYkyQW/1SW1LEYQIqBTcBmmq78MRpBBW1Do+0TLlyLlULKi9ngIW1sFb21TKRvIb/5ZyvQwrkz69n532USUxKr5za0VKYmTxM7s/mfGsczWkxy0esHwQqADInbQSUS4QoXDZc/hD+s+zPQfr4ah7xJ0FnHcspm4D/is=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:reply-to:sender:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=KqNBvJOrwGOaooNeAkKotye+5Qy7iYzZ/+U+dDG9pTNEKN6zLriA/QkpDW3v78a58dbesCIqOcZmtnPWREBhFOcdTKL23p6DHjqvPlecyVVm9uTlOBqA4dhEg9Sv+kFMe5+SdHCAeFDq9Was7r3Xs4VrJ5xKr7+pOlZrMxZcges=
- In-reply-to: <ac5252c90802050653t449d4ed9qf97f36f62175df7f@mail.gmail.com>
- References: <ac5252c90802050653t449d4ed9qf97f36f62175df7f@mail.gmail.com>
- Reply-to: iperf-users --at-- dast.nlanr.net
- Sender: owner-iperf-users --at-- dast.nlanr.net
2008/2/5, Reginald Smith <rsmith --at-- sloan.mit.edu>:
> I am using iperf in a network measurement experiment and I want to know if
> for the UDP measurements of throughput/total bytes sent and received are
> header bytes from Ethernet frames, UDP, and IP included or excluded from
> throughput measurements? Thanks for any help.
This looks like a Frequently Asked Question. However I could not find
it in the FAQ. Yet?
It can be found in the list archive:
<http://www.google.com/search?hl=fr&q=site%3Aarchive.ncsa.uiuc.edu++headers+rate>
There is no portable and reliable way to know the size of the headers
of lower layers. For instance TCP and UDP can run on non-Ethernet
networks.
AFAICT, iperf does NO random guesses at lower layers. It just
precisely reports what it sees: user data transfered.