[Tsung] Enabling kernel poll support

[Jason Tucker]

Wow... can someone tell me more about this? We're in the midst of an attempt
to generate >1 million client connections w/ tsunami and I'm not familiar
with this kernel poll option.

What benefit does it give?
We're currently using R10-B5 on Solaris 10... if that matters.

BTW, would it be possible to get the list administrators to configure the
tsung-users list so it uses a "Reply-To: tsung-users at process-one.net"
header? I hate that every time I respond to someone on this list, by default
it goes to the original sender, and not to the list. Thanks!

__Jason

On 5/15/07, Nicolas Niclausse <nicolas at niclux.org> wrote:
>
> Vinod Panicker wrote:
>
> > I'm using tsung to generate a huge number of concurrent users on a
> > jabber server.  I believe that enabling kernel poll support should
> > significantly improve the cpu utilization on the client machines.
>
> It should if you have lots of users in a each beam
>
> > How do I go about doing that?  I've added '+K true' in the tsung shell
> > script -
> >
> > ERL_OPTS=" +A 1 -shared +K true  "
>
> > But how do I verify whether this option is being used or not?  I'm
> > running tsung in a distributed fashion.  All client machines support
> > kernel poll, as verified by starting erl with +K true shows it to be
> > enabled.
>
> The option will only be used on the controller and will not be
> propagated to remote clients. This patch should fix the problem:
>
> --- ts_config_server.erl        (revision 721)
> +++ ts_config_server.erl        (working copy)
> @@ -354,6 +354,7 @@
>          " -boot_var ", ?TSUNGPATH, " ",PathVar,
>          " -pa ", PA1,
>          " -pa ", PA2,
> +        " +K true ",
>          " -tsung debug_level ", integer_to_list(?config(debug_level)),
>          " -tsung dump ", atom_to_list(?config(dump)),
>          " -tsung log_file ", LogDir
>
>
> --
> Nicolas
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>
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