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I want to get the memory consumption by a process. I am using RSS parameter to determine it.

I am getting same RSS value when I am using pmap -xx <PID> and with smem tool. But when I am using ps v <PID> to get the RSS then it is showing different value.

I know for pmap and smem they use /proc/pid/smaps file to get RSS value but I don't have idea about ps tool.

What are the basis of this calculation in ps tool and which is correct ps or pmap and smem

mnille
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Mohit Ranawat
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  • The same question was asked 6 years earlier: https://unix.stackexchange.com/q/56469/474546 – Inego Nov 11 '21 at 05:13

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