What is the Physical Memory Usage?

Mrinmoy

• February 02, 2019 06:32

Currently, I am using a shared hosting plan from Godaddy which gives access to cPanel. I am seeing that there is factor called "Physical Memory Usage" its been like 11.62mb out of 512mb. I want to know what exactly is it?

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  ES - George

  • February 02, 2019 15:39

  [QUOTE] Physical memory limit corresponds to the amount of memory actually used by end customer's processes. You can see individual process physical memory usage by monitoring RES column in top output for the process. Because similar processes (like PHP) share a lot of their memory, physical memory usage is often much lower then virtual memory usage. Additionally physical memory includes shared memory used by the customer, as well as disk cache. In case of disk cache -- if user is starting to lack physical memory, the memory used for disk cache will be freed up, without causing any memory faults. When LVE goes over physical memory limit, CloudLinux will first free up memory used for disk cache, and if that is not enough, it will kill some of the processes within that LVE, and increment fPMEM counter. This will usually cause web server to serve 500 and 503 errors. Physical memory limit is a much better way to limit memory for shared hosting.
  Source: Memory Limits

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  cPanelMichael

  • February 04, 2019 19:17

  Hello @Mrinmoy, The information in the previous post should answer your question. Let us know if you require any additional assistance. Thanks!

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