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?