Can anyone remember the recommended tc/ip - udp testing software from this 
group a year or two back?
Freebie software that ran under a dos box with one machine set to run as a 
server and another as client.
Very useful, I used it to verify a home lan, inc. ethernt over mains, 
throughput with realistic results.

I seem to have cleared it out and can't for the life of me remember what it 
was called or where I downloaded it from.

Will wrote:
> Can anyone remember the recommended tc/ip - udp testing software from this 
> group a year or two back?
> Freebie software that ran under a dos box with one machine set to run as a 
> server and another as client.
> Very useful, I used it to verify a home lan, inc. ethernt over mains, 
> throughput with realistic results.
> 
> I seem to have cleared it out and can't for the life of me remember what it 
> was called or where I downloaded it from. 
> 
> 

iperf?
http://sourceforge.net/projects/iperf

If you feel like a GUI you can also use jperf.

> iperf?
> http://sourceforge.net/projects/iperf
>
> If you feel like a GUI you can also use jperf.

Yes that's the one, many thanks indeed.

"william" <1> wrote in message 
news:2cidnTfG6aqIhkjVnZ2dnUVZ8vSdnZ2d@bt.com...
>> iperf?
>> http://sourceforge.net/projects/iperf
>>
>> If you feel like a GUI you can also use jperf.
>
> Yes that's the one, many thanks indeed.

This looks as if it could be a useful utility.

One thing: is the "jitter" graph supposed to have any points on it? When I 
run it with my desktop PC as server and laptop as client, the jitter graph 
on the server does not have any points/line on it, whereas the data rate 
graph does.

It's very interesting to see how the data rate over wireless drops as I move 
away from the router, even in situations where I still get a "very good" (4 
out 5 bars) 54 Mb/sec connection: 2500 KB/sec drops to 500 KB/sec.

Mortimer wrote:
> "william" <1> wrote in message 
> news:2cidnTfG6aqIhkjVnZ2dnUVZ8vSdnZ2d@bt.com...
>>> iperf?
>>> http://sourceforge.net/projects/iperf
>>>
>>> If you feel like a GUI you can also use jperf.
>> Yes that's the one, many thanks indeed.
> 
> This looks as if it could be a useful utility.
> 
> One thing: is the "jitter" graph supposed to have any points on it? When I 
> run it with my desktop PC as server and laptop as client, the jitter graph 
> on the server does not have any points/line on it, whereas the data rate 
> graph does.

Do you not get something like this:

http://xjperf.googlecode.com/files/jperf-1.jpg


> 
> It's very interesting to see how the data rate over wireless drops as I move 
> away from the router, even in situations where I still get a "very good" (4 
> out 5 bars) 54 Mb/sec connection: 2500 KB/sec drops to 500 KB/sec. 
> 
>

> Do you not get something like this:
>
> http://xjperf.googlecode.com/files/jperf-1.jpg
>
>
>>
>> It's very interesting to see how the data rate over wireless drops as I 
>> move away from the router, even in situations where I still get a "very 
>> good" (4 out 5 bars) 54 Mb/sec connection: 2500 KB/sec drops to 500 
>> KB/sec.

It was the dos (box) one I was after, I've not used the jperf.  Is there a 
gui for XP users? (if so where, the one I saw looked unix).

FWIW, I tried the iperf on the wireless first today, laptop static, 
'excellent' signal (g), about 25' away outside, and it managed 14.3Mb/s 
throughput consistently (all c.14Mb/s) - I just knew it wouldn't make 27Mb!!

A result anyway, I wanted to test my duplexer and it performed without any 
measurable loss of speed at all (c.74),  makes me want to think about 
gigabit (if only).

Will wrote:

> It was the dos (box) one I was after, I've not used the jperf.  Is there a 
> gui for XP users? (if so where, the one I saw looked unix).
> 
http://xjperf.googlecode.com/files/jperf2.0.0.zip

>>
> http://xjperf.googlecode.com/files/jperf2.0.0.zip

Ah, yes thanks.  Try the pretty version now then.

"LR"  wrote in message 
news:qOmdnes6aLOdqEjVRVnyjgA@bt.com...
> Mortimer wrote:
>> "william" <1> wrote in message 
>> news:2cidnTfG6aqIhkjVnZ2dnUVZ8vSdnZ2d@bt.com...
>>>> iperf?
>>>> http://sourceforge.net/projects/iperf
>>>>
>>>> If you feel like a GUI you can also use jperf.
>>> Yes that's the one, many thanks indeed.
>>
>> This looks as if it could be a useful utility.
>>
>> One thing: is the "jitter" graph supposed to have any points on it? When 
>> I run it with my desktop PC as server and laptop as client, the jitter 
>> graph on the server does not have any points/line on it, whereas the data 
>> rate graph does.
>
> Do you not get something like this:
>
> http://xjperf.googlecode.com/files/jperf-1.jpg

No, I get

http://img230.imageshack.us/img230/9231/jperfkf0.jpg

on both an XP PC and a Vista PC as server, with another XP PC as client, and 
also for XP as server and Vista as client or vise versa.

"Mortimer"  wrote in message 
news:3uedneXVV-V29UjVRVnyhgA@posted.plusnet...
> "LR"  wrote in message 
> news:qOmdnes6aLOdqEjVRVnyjgA@bt.com...
>> Mortimer wrote:
>>> "william" <1> wrote in message 
>>> news:2cidnTfG6aqIhkjVnZ2dnUVZ8vSdnZ2d@bt.com...
>>>>> iperf?
>>>>> http://sourceforge.net/projects/iperf
>>>>>
>>>>> If you feel like a GUI you can also use jperf.
>>>> Yes that's the one, many thanks indeed.
>>>
>>> This looks as if it could be a useful utility.
>>>
>>> One thing: is the "jitter" graph supposed to have any points on it? When 
>>> I run it with my desktop PC as server and laptop as client, the jitter 
>>> graph on the server does not have any points/line on it, whereas the 
>>> data rate graph does.
>>
>> Do you not get something like this:
>>
>> http://xjperf.googlecode.com/files/jperf-1.jpg
>
> No, I get
>
> http://img230.imageshack.us/img230/9231/jperfkf0.jpg
>
> on both an XP PC and a Vista PC as server, with another XP PC as client, 
> and also for XP as server and Vista as client or vice versa.

Ah - just spotted the difference between the image you refer to and my 
image: if I configure both client and server to use UDP rather than TCP, I 
get jitter figures in the results window and points on the jitter graph.