[Tsung] Enabling kernel poll support

[Nicolas Niclausse]

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