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I want to figure out how much memory a specific command uses but I'm not sure how to check for the peak memory of the command. Is there anything like the time([command]) usage but for memory?

Basically, I'm going to have to run an interactive queue using SLURM, then test a command for a program I need to use for a single sample, see how much memory was used, then submit a bunch of jobs using that info.

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  • time([command]) that's odd syntax, it's never time(), after time there's a space time command. Commented Jan 8, 2023 at 9:52

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Yes, time is the program that monitors programs and shows the Maximum resident set size. Not to be confused with time Bash builtin that only shows real/user/sys times. On my Arch Linux you have to install time with pacman -S time, it's a separate package.

$ command time -v echo 1 1 Command being timed: "echo 1" User time (seconds): 0.00 System time (seconds): 0.00 Percent of CPU this job got: 0% Elapsed (wall clock) time (h:mm:ss or m:ss): 0:00.00 Average shared text size (kbytes): 0 Average unshared data size (kbytes): 0 Average stack size (kbytes): 0 Average total size (kbytes): 0 Maximum resident set size (kbytes): 1968 Average resident set size (kbytes): 0 Major (requiring I/O) page faults: 0 Minor (reclaiming a frame) page faults: 90 Voluntary context switches: 1 Involuntary context switches: 1 Swaps: 0 File system inputs: 0 File system outputs: 0 Socket messages sent: 0 Socket messages received: 0 Signals delivered: 0 Page size (bytes): 4096 Exit status: 0 

Note:

$ type time time is a shell keyword $ time -V bash: -V: command not found real 0m0.002s user 0m0.000s sys 0m0.002s $ command time -V time (GNU Time) 1.9 $ /bin/time -V time (GNU Time) 1.9 $ /usr/bin/time -V time (GNU Time) 1.9 
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For any macOS users, see stackoverflow.com/a/41207962/2836621
How do you check peak memory?

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