Contents
Does Apache use RAM?
Apache modules consume memory. Also tune your Apache Prefork Module configurations.
How do I allocate more memory to Apache?
Enable HTTP persistent connections (Keep-Alive) in Apache configuration. In theory this will reduce CPU load (caused by tcp handshaking) and increase memory consumption (in a busy server) as Apache will spawn new worker processes / threads to server new requests.
How much RAM does PHP need?
A typical appropriate memory limit for PHP running Drupal is 128MB per process; for sites with a lot of contributed modules or with high-memory pages, 256MB may be more appropriate.
How do you increase MaxRequestWorkers?
To increase it, you must also raise MaxRequestWorkers using the following formula: ServerLimit value x 25 = MaxRequestWorkers value. For example, if ServerLimit is set to 20, then MaxRequestWorkers will be 20 x 25 = 500. MPM Prefork: The default MaxRequestWorkers value is 256.
How to know how much memory Apache is using?
Run this command to find the average memory each apache2 process is using ps aux | grep ‘apache2’ | awk ‘ {print $6/1024;}’ | awk ‘ {avg += ($1 – avg) / NR;} END {print avg ” MB”;}’ Call that value x Restart your apache server by using sudo service apache2 restart and take a note of how much free memory you have.
What happens if I Make Apache memory too big?
It you make it too big, then the process will keep using more and more memory before being killed. If you make it too small, then the processes will die too quickly and that will present an overhead on your system. I usually keep it somewhere between 4000 and 10000.
How can I reduce the memory usage in Apache?
For e.g., By default Apache uses mod_PHP. But, by using PHP-FPM we can limit the memory consumption and also improve performance. Similarly, in MySQL we can adjust the Key buffer size, Query Cache, Table Cache parameters etc., to reduce the memory usage.
How much memory does Apache use in AWS?
We are on 16GB AWS instance and I am finding it to be really slow. When I ran I can see about 60+ apache processes. It is showing almost all memory being used by apache.