whats the "pool"-number in external apps section a

[ts77]

Hi there,
... another question about the useability .
whats the "pool"-number in external apps section about?

I've defined a fcgi-handler for my php-install.
Its set to

Max Connections	20
Environment	PHP_FCGI_MAX_REQUESTS=500
PHP_FCGI_CHILDREN=20

but I always see only 2 in "pool" which I understand as only 2 php-processes are used.
There are at least 10 concurrent requests to php-scripts at the same time ... .

Just wanting to know what that number means therefore .


thanks in advance,

thomas