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Today's topics:

* IPerf & JPerf (was Re: Basic questions about telecommunications) - 4
messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/86ac7da2cbac660c?hl=en

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TOPIC: IPerf & JPerf (was Re: Basic questions about telecommunications)
http://groups.google.com/group/sci.electronics.repair/t/86ac7da2cbac660c?hl=en
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== 1 of 4 ==
Date: Sat, Jan 1 2011 8:56 pm
From: David Nebenzahl

On 1/1/2011 4:19 PM Jeff Liebermann spake thus:

> Incidentally, if you want to do useful performance measuring, with
> clues as to what's going on behind the magic curtain, I suggest you
> look at IPerf and JPerf.
> <http://openmaniak.com/iperf.php>
> <http://code.google.com/p/xjperf/>

Regarding that: I looked at the first site and am intrigued, but don't
understand something. I see you need a host and client to make this
work, which makes sense, and as you point out you might (or might not)
be able to use someone else's web-based host; but if not, what then? Can
you somehow set up both host and client on your computah and have the
packets make a "round trip"? (Although that would be a problem since I
notice my upload speeds are a lot slower than download.) How would I use
this to test my dial-up connection?

Also, do I want to test using TCP, UDP or both? Which are used when I
talk to my ISP?

--
Comment on quaint Usenet customs, from Usenet:

To me, the *plonk...* reminds me of the old man at the public hearing
who stands to make his point, then removes his hearing aid as a sign
that he is not going to hear any rebuttals.

== 2 of 4 ==
Date: Sat, Jan 1 2011 11:51 pm
From: Jeff Liebermann

On Sat, 01 Jan 2011 20:56:14 -0800, David Nebenzahl
<nobody@but.us.chickens> wrote:

>On 1/1/2011 4:19 PM Jeff Liebermann spake thus:
>
>> Incidentally, if you want to do useful performance measuring, with
>> clues as to what's going on behind the magic curtain, I suggest you
>> look at IPerf and JPerf.
>> <http://openmaniak.com/iperf.php>
>> <http://code.google.com/p/xjperf/>

>Regarding that: I looked at the first site and am intrigued, but don't
>understand something. I see you need a host and client to make this
>work, which makes sense, and as you point out you might (or might not)
>be able to use someone else's web-based host; but if not, what then?

If you can't find an iperf server, you're stuck. I did some quick
Googling and couldn't find one that's publicly accessible.

I use IPerf and JPerf mostly for local wireless testing. I setup one
machine to act as a server, and test thruput via wireless under
various conditions. For testing a dialup connection, you would need
an IPerf server located at your ISP or somewhere on the internet. I
could set a temporary server here, at my house, but you would be
limited to my 384Kbit/sec DSL outgoing thruput. Probably good enough
for a dialup modem test. If you want to try that, please let me know.

>Can
>you somehow set up both host and client on your computah and have the
>packets make a "round trip"? (Although that would be a problem since I
>notice my upload speeds are a lot slower than download.) How would I use
>this to test my dial-up connection?

No. It's not possible to use one computer for both a client and
server. Well, actually, I haven't tried it, but I suspect there will
be problems.

>Also, do I want to test using TCP, UDP or both? Which are used when I
>talk to my ISP?

Do TCP and forget about UDP for now. UDP testing is tricky and
sometimes results in bizarre results. TCP is reliable.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

== 3 of 4 ==
Date: Sun, Jan 2 2011 12:03 am
From: Jeff Liebermann

On Sat, 01 Jan 2011 20:50:40 -0800, David Nebenzahl
<nobody@but.us.chickens> wrote:

>On 1/1/2011 7:25 PM Jeff Liebermann spake thus:
>
>> On Sat, 01 Jan 2011 18:13:15 -0800, David Nebenzahl
>> <nobody@but.us.chickens> wrote:
>>
>>> Anything else you want to know?
>>
>> Nope. Just the name of the Firefox add-on. You supplied everything
>> else.
>
>What Firefox add-on? Didn't you read through the thread? The speed
>reporting is from my firewall, Sygate Personal Firewall.

I just re-read all 10 of your messages in this thead and did not see
Sygate mentioned anywhere. Unless there was an article that didn't
appear on Giganews, I don't believe you mentioned that the graph came
from Sygate. You did mention that your "test application" was
Firefox, which is why I guessed that it was an add-on.

>I just went to find their website and was dismayed to find out they've
>been bought out by Norton (ugh): http://us.norton.com/sygate

The mediocre shall inherit the earth.

I was going to try and duplicate your setup, but with such an old
program, it's not going to happen. Sorry, but I've gone as far as I
can trying to explain why you're seeing those variations in speed.

Try this speed test:
<http://www.ispgeeks.com/wild/modules.php?name=CapacityTest>
It's not a nice neat graph as you were expecting, but it does give
repeatable tests from a well connected server. I'll see if I can find
another server that gives repeated data suitable for graphing.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

== 4 of 4 ==
Date: Sun, Jan 2 2011 12:29 am
From: Jeff Liebermann

On Sun, 02 Jan 2011 00:03:46 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:

>I'll see if I can find
>another server that gives repeated data suitable for graphing.

This looks like a likely candidate:
<http://speedtestpro.net>
No clue if it works with W2K.

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

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