Memory usage of fresh nginx

[etrader]

I installed nginx (0.8.7) by rpm on Centos with php-fpm. The total
memory used was about 45K

I installed nginx (1.0.4) from source on the same conditions, but the
total memory used is about 90K

as I compared the memory usage by top, I can see the amount used by each
php-fpm process is double in the latter case. Any idea? Do I need to
adjust setting?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,207506,207506#msg-207506