About the least_conn (http://nginx.org/r/least_conn) load balancing option and php-fpm

Server NGINX
1

Hello,

I’m testing the least_conn option for php-fpm.

I’m curious whether what I should set
“listen.backlog” in php-fpm.conf settings?

Should I try listen.backlog=0? or some other setting for least_conn load
balancing?

Thanks.