We are running 1.6.3 server version with 1 master and 2 slaves.

We've 4 web servers using Java MongoDB driver 2.5.3. Each web server has 1 read connection pool of size 400 to all mongo servers
and 1 write connection pool of size 400 to master.

We want to increase read connection pool size on the web server. However, we want to know what is the default connection
on sever. There is no information on the mongodb.org.