Guides tagged “memory”
Step-by-step MdmHost guides about memory, sorted A-Z.
8 guides
Add a swap file on a Linux VPS
Create a swap file, make it survive reboots, tune swappiness, and learn when swap helps and when you really need more RAM.
Fix PHP "Allowed memory size exhausted" fatal error
PHP stops a script when it tries to allocate more memory than memory_limit allows. Find the script that hit the limit, raise the limit in the right place, and fix the cause.
High CPU or RAM usage on a Linux VPS: find the cause and fix it
Track down what is eating CPU or memory on your Linux VPS with top, ps and logs, then fix runaway PHP, MySQL, bots, Docker containers or a lack of swap.
How much RAM does a VPS need? A practical sizing guide
Learn how the operating system and your apps use memory, rough starting points for common workloads on Linux and Windows, and the signs that your server is running out of RAM.
Monitor processes with top and htop on Linux
Read top and htop on your Linux VPS: load average, CPU, memory and swap, sort by usage, find the process slowing the server and stop it safely.
Tune Apache MPM settings to stop memory exhaustion
Size Apache's MaxRequestWorkers to the RAM you really have, choose between prefork and event, set ServerLimit and KeepAlive sensibly and spot the MaxRequestWorkers warning in your logs.
Tune MySQL and MariaDB memory settings for a small VPS
Set innodb_buffer_pool_size, max_connections and other my.cnf values so MySQL or MariaDB fits the RAM on your Linux VPS and stops swapping.
Tune PHP-FPM pools (pm.max_children) for your RAM
Size PHP-FPM to your server's memory. Choose between dynamic, ondemand and static, calculate pm.max_children from real per-process memory, set pm.max_requests, and act on the max_children warning.
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