7/25/2023 0 Comments Linux list processes by ram usage![]() If ps can not determineĭisplay width, as when output is redirected (piped) into a file or another command, the output When specified last, this column will extend to the edge of the display. Root 475 0.0 0.1 3004 1600 ? S is partly dead, waiting to be fully destroyed by its parent. USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND Given that little piece of background information, here's how we can sort the ps command output by memory usage: Sort Linux `ps` output by memory (RAM), from high to low The "+" is optional since default direction is increasing numerical or Sorting syntax is keykey]Ĭhoose a multi-letter key from the STANDARD FORMAT SPECIFIERS section. Here’s a quick look at the -sort information from the ps command man page: The `ps -sort` optionīefore I get started, it’s important to note that the Linux ps command supports a -sort argument, and that argument takes a number of key values, and those keys indicate how you want to support the ps output. In this article I’ll show how to sort the Linux ps command output, without using the Linux sort command. Mem: 3083924 2177300 906624 0 461344 837008Īlthough there are only 906624 bytes of RAM sitting completely unused at the moment, there are an additional 461344 bytes of buffers and 837008 bytes of cached data which can be made available more-or-less instantly if something more important (i.e., just about anything) needs the memory, giving me a total of 2204976 bytes actually available to me.Linux ps command FAQ: Can you share some examples of how to sort the ps command? That's the line which will tell you how much memory is actually tied up by running programs, ignoring what's being used for the moment by buffers and cache.įor example, my machine currently shows: total used free shared buffers cached You need to be looking at the second line of output from free, the one labeled -/+ buffers/cache. Linux is very aggressive about caching data from disk, even including "swapped out" virtual memory pages, in RAM and all that cached data is counted as "used" in free's first line, even though it can be made available again in a microsecond (or less, these days) if needed. Ignore the first line of output from free. Looks like you're running free, looking at the first line, and freaking out.
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