I have
- php-fpm 7.0.11 - with ioncube
- nginx 1.10.x
- mariadb 10.1
I'm using the PHP-FPM to static, I never had any problems with this. The High CPU usage occurred randomly, and now it's permanent. I didn't make any changes.
At the time we are talking the CPU usage is at 100% with most of the PHP-FPM processes in R state.
Here is a top output My CPU is 16 threads
top - 08:21:15 up 31 min, 2 users, load average: 799.18, 782.54, 620.78
Tasks: 1082 total, 799 running, 283 sleeping, 0 stopped, 0 zombie
%Cpu(s): 98.5 us, 1.3 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.2 si, 0.0
My webserver is getting more than 5000 requests / second but with this amount everything was fine before.
Is very strange because:
If i replace the ioncubed , with the original source of PHP file, the load is decreasing to 8 , as well as the cpu usage to only 15-20%
If i KEEP the ioncube, but stop the mysql, the load average and cpu is decreasing too.
Sometimes when i change the sysctl config, the cpu is decreasing for 10 seconds but then again it goes 100%
I can't explain this, because if it was the ioncube, i would have the problem with the 2) but i don't.
I really have lost my hair trying to find the real cause of it and it makes me crazy because that happened when i didn't change anything.
My sysctl file is as follow:
net.core.wmem_max= 1677721600
net.core.rmem_max= 1677721600
net.ipv4.tcp_rmem= 1024000 8738000 1677721600
net.ipv4.tcp_wmem= 1024000 8738000 1677721600
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_no_metrics_save = 1
net.core.netdev_max_backlog = 8000
net.ipv4.route.flush=1
fs.file-max=265536
net.core.somaxconn = 65535
vm.max_map_count=655300
