Debian x86_64 + Nginx + PHP5-FPM optimization
- by Olal'a
I used to have a VPS (512MB) from Linode and I was running nginx + php5-fpm (which comes with php5.3.3) on Debian Lenny (i686). The total memory usage was about 90-100MB.
Now I have another VPS (different hosting company) and I also run nginx + php5-fpm on Debian Lenny (x86_64). The system is 64-bit, so the memory usage is higher now, about 210-230MB, which I think is too much.
Here is my php5-fpm.conf:
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 5
pm.max_requests = 300
That's what top command tells me:
top - 15:36:58 up 3 days, 16:05, 1 user, load average: 0.00, 0.00, 0.00
Tasks: 209 total, 1 running, 208 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni, 99.9%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 532288k total, 469628k used, 62660k free, 28760k buffers
Swap: 1048568k total, 408k used, 1048160k free, 210060k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
22806 www-data 20 0 178m 67m 31m S 1 13.1 0:05.02 php5-fpm
8980 mysql 20 0 241m 55m 7384 S 0 10.6 2:42.42 mysqld
22807 www-data 20 0 162m 43m 22m S 0 8.3 0:04.84 php5-fpm
22808 www-data 20 0 160m 41m 23m S 0 8.0 0:04.68 php5-fpm
25102 www-data 20 0 151m 30m 21m S 0 5.9 0:00.80 php5-fpm
10849 root 20 0 44100 8352 1808 S 0 1.6 0:03.16 munin-node
22805 root 20 0 145m 4712 1472 S 0 0.9 0:00.16 php5-fpm
21859 root 20 0 66168 3248 2540 S 1 0.6 0:00.02 sshd
21863 root 20 0 66028 3188 2548 S 0 0.6 0:00.06 sshd
3956 www-data 20 0 31756 3052 928 S 0 0.6 0:06.42 nginx
3954 www-data 20 0 31712 3036 928 S 0 0.6 0:06.74 nginx
3951 www-data 20 0 31712 3008 928 S 0 0.6 0:06.42 nginx
3957 www-data 20 0 31688 2992 928 S 0 0.6 0:06.56 nginx
3950 www-data 20 0 31676 2980 928 S 0 0.6 0:06.72 nginx
3955 www-data 20 0 31552 2896 928 S 0 0.5 0:06.56 nginx
3953 www-data 20 0 31552 2888 928 S 0 0.5 0:06.42 nginx
3952 www-data 20 0 31544 2880 928 S 0 0.5 0:06.60 nginx
So, the question is there any way to use less memory? Btw, I have 16 cores and it would be nice to make use of them...
