Need help with this client pool size

[ronen]

http://java-monitor.com/postedimages/10eacb74-198f-40ee-9f1a-ef7a4c1fd166.png

Hi All,

I' running some load testing on openfire 3.6.3
and every time client pool size reach the limit 17
my client got disconnected.

is it possible to increase this number ? from where ?
what does it mean ?

Thanks
Ronen