40 lines
1.3 KiB
Bash
Executable File
40 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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PAGESIZE=`getconf PAGESIZE`;
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TOTAL_MEMORY=`cat /proc/meminfo | head -n 1 | awk '{print $2}'`;
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# Mimic the output of ps -ax -o pid=,ppid=,pcpu=,pmem=,command=
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# Read all numeric subdirectories in /proc
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for pid in `cd /proc && ls -d [0-9]*`
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do {
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if [ -e /proc/$pid/stat ]
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then
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echo $pid;
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# ppid is the word at index 4 in the stat file for the process
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awk '{print $4}' /proc/$pid/stat;
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# pcpu - calculation will be done later, this is a placeholder value
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echo "0.0"
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# pmem - ratio of the process's working set size to total memory.
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# use the page size to convert to bytes, total memory is in KB
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# multiplied by 100 to get percentage, extra 10 to be able to move
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# the decimal over by one place
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RESIDENT_SET_SIZE=`awk '{print $24}' /proc/$pid/stat`;
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PERCENT_MEMORY=$(((1000 * $PAGESIZE * $RESIDENT_SET_SIZE) / ($TOTAL_MEMORY * 1024)));
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if [ $PERCENT_MEMORY -lt 10 ]
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then
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# replace the last character with 0. the last character
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echo $PERCENT_MEMORY | sed 's/.$/0.&/'; #pmem
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else
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# insert . before the last character
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echo $PERCENT_MEMORY | sed 's/.$/.&/';
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fi
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# cmdline
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xargs -0 < /proc/$pid/cmdline;
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fi
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} | tr "\n" "\t"; # Replace newlines with tab so that all info for a process is shown on one line
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echo; # But add new lines between processes
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done
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