If I run GNU time with some large program, I get the following output:
604.90user 13.16system 11:05.56elapsed 92%CPU (0avgtext+0avgdata 0maxresident)k
712inputs+0outputs (5major+76648minor)pagefaults 0swaps
Question – I would guess that maxresident would refer to maximum resident memory usage of the program that I ran, but why is it always zero?
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As the man page states, “Not all resources are measured by all versions of Unix, so some of the values might be reported as zero.” On my Gentoo GNU/Linux machine avgtext and avgdata are zero, but maxresident is not zero.
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