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linux - ps aux output meaning - Super User When typing the command ps aux, what does each column of the output mean? For example: $ ps aux timothy 29217 0 0 0 0 11916 4560 pts 21 S+ 08:15 0:00 pine root 29505 0 0 0 0 38196
What memory statistics does Linux ps command really display? $ ps lp 3974 F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND 0 1000 3974 3972 20 0 7064 660 - Ss+ pts 0 0:00 tail -F var log syslog However, with the exception of the VSZ field from the l output, these all differ more or less from the info pmap gives about the individual mappings
ps - Virtual memory usage vs resident set size - Super User 4 When I launch php-script and do ps aux and have huge number for VSZ, about 450MB Whilst RSS -- Resident set size -- is about 10MB From wikipedia, Resident set size is is the portion of a process's memory that is held in RAM But does Virtual memory size include memory held somewhere else, say in filesystem?
Understand what is happening in Linux with ps, top, and free VSZ (summed as 144 GB) is not certainly a memory required by a process! It is the allocated virtual memory space of a process which does not need to correspond to an allocated physical memory at all (RAM, swap, memory mapped files) This number is in most cases useless
Understanding top command in unix - Super User When I run top -c command on my UNIX box I get the output below: top - 03:09:34 up 5 days, 6:14, 1 user, load average: 0 00, 0 00, 0 00 Tasks: 175 total, 1 running, 174 sleeping, 0 stopped,
Linux: find out what process is using all the RAM? - Super User On Linux in the top process you can press < key to shift the output display sort left By default it is sorted by the %CPU so if you press the key 4 times you will sort it by VIRT which is virtual memory size giving you your answer Another way to do this is: ps -e -o pid,vsz,comm= | sort -n -k 2 should give you and output sorted by processes virtual size Here's the long version: ps