Chuck Fossen | 10 May 2010 18:25
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FW: building iperf 2.0.5b1 under cygwin

Sending to the list...

Hi Jon,
Thanks, the trunk built fine under cygwin. 
I was interested in the changes for cpu utilization when running as a
client. Or was that already in 2.0.4? (I only had the 1.7.0 windows
binary.) It works fine - so far - I've only done a quick test.
I'll try to give the VS patch a try sometime I have a chance.
chuck

>Hi Chuck, 
>
>You might try trunk.  I did some work a couple of weeks ago to clean up
the
>autoconf stuff.  Cygwin would be a good test to see if that succeeded.
>
>There is also a patch in the tracker to make Iperf build under the
Visual
>Studio.  It's a pretty big patch and I haven't had time to review it to
see
>how invasive it is.  You can find it at:
>
>http://sourceforge.net/tracker/?func=detail&aid=2919936&group_id=128336
&ati>d=711373
>
>No Iperf for Windows is the most common complaint I hear, so I'd love
to >see
>patches to make Cygwin work as well as the visual studio patches.
>I don't have Visual Studio or much experience with Windows so it isn't
>something I'm likely to get to anytime soon.
(Continue reading)

Jon Dugan | 11 May 2010 01:18

Re: FW: building iperf 2.0.5b1 under cygwin

Excerpts from Chuck Fossen's message of Mon May 10 11:25:17 -0500 2010:
> Sending to the list...
> 
> Hi Jon,
> Thanks, the trunk built fine under cygwin. 
> I was interested in the changes for cpu utilization when running as a
> client. Or was that already in 2.0.4? (I only had the 1.7.0 windows
> binary.) It works fine - so far - I've only done a quick test.
> I'll try to give the VS patch a try sometime I have a chance.

The latest client cpu improvements made it into 2.0.5b1.  However, I'm not at
all familiar with threads under Cygwin, so while it is likely that the CPU
fixes helped for the Cygwin build it's by no means certain.

Jon
--

-- 
Jon M. Dugan <jdugan@...>
ESnet Network Engineering Group
Lawrence Berkeley National Laboratory

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Chuck Fossen | 11 May 2010 15:48
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Re: FW: building iperf 2.0.5b1 under cygwin

>The latest client cpu improvements made it into 2.0.5b1.  However, I'm
not >at all familiar with threads under Cygwin, so while it is likely
that the >CPU fixes helped for the Cygwin build it's by no means
certain.
>
>Jon

Yes, it is definitely fixed. It went from using 98% down to 0% cpu
utilization on windows.

chuck

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