Sysadmin Utilize more memory

Be sure you're reading memory usage correctly first - Help! Linux ate my RAM! Allocating more memory doesn't necessarily make things run faster. Your web apps have to require and utilise the actual memory which is different from allocating it otherwise it still is unused generally.

You need to figure out each components memory usage as well as their relevant settings to adjust i.e. nginx, php-fpm, mariadb, elasticsearch, zend opcache, redis, memcached etc and tune/allocate memory to relevant buffers or settings.

Centmin Mod is provide as is, so short of scripted related bugs or issues, any further optimisation to the web stack components - nginx, php-fpm, mariadb mysql, csf firewall etc or web app specific configurations are left to the Centmin Mod user to deal with. So I do not provide any free support for such.

However, there's many linux tools and scripts that can help you figure out usage at least. Including starting with PHP Opcode cache/memcached statistics pages PHP Opcode and Memcached statistics pages

Tools and commands you will want to read up on and learn for basic system admin tasks and troubleshooting.

• 20 Command Line Tools to Monitor Linux Performance
• 13 Linux Performance Monitoring Tools - Part 2
• 80 Linux Monitoring Tools for SysAdmins - Server Density Blog
• Amazing ! 25 Linux Performance Monitoring Tools
• 20 Linux System Monitoring Tools Every SysAdmin Should Know
• How to monitor disk I/O in Linux from command line - Xmodulo
  
• 10 Useful Sar (Sysstat) Examples for UNIX / Linux Performance Monitoring
  
• Generate CPU, Memory & I/O report using SAR command
  
• My mysqlmymonlite.sh script can help with that mysqlmymonlite.sh README text file has instructions for setting up a cronjob to email you reports i.e. every 10/15min or every hour.

Notes:

• Centmin Mod already installed Glances tool. It can be invoked from SSH command glances or top2. Official Glances site at nicolargo.github.io/glances/ and documentation here.

However, Centmin Mod users are free to help each other out and ask questions or give answers on this community forum. My hopes are that this community forum evolves so that more veteran long time Centmin Mod users help new Centmin Mod users out

 

FYI, you may get more performance out of these tips here than just blindly over allocating memory