Too high on linux VM memory usage

We have a linux virtual machine that uses so the amount of memory.  It helps to be on a physical server with only a gig of memory, now it's on a virtual machine with 1.5 GB of memory and it is often the sending of alerts that the memory usage is of the order of 90 to 98%.  Maybe something was wrong when we converted to a physical process to a virtual machine?  It runs only Apache 2.0 so I don't think I need to increase the memory.  Everything that I can check, or perhaps something that should be done after the conversion of a physical to virtual machine?

  • Make sure you have installed and after installation script executed vmtools

  • know what process consumes all this memory, you can get this data by using the ps command
    PS - eo mmtp, rss, vsize, args pcpu | Sort - k 1-r

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