How much RAM is Apache using?

ps -o rss -C httpd | tail -n +2 | (sed 's/^/x+=/'; echo x) | bc
Display the amount of memory used by all the httpd processes. Great in case you are being Slashdoted!

4
2009-07-31 15:15:08

These Might Interest You

  • This version also attaches to new processes forked by the parent apache process. That way you can trace all current and *future* apache processes.


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    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace -f
    msealand · 2013-02-19 19:14:57 0
  • Will open strace on all apache process, on systems using sbin/apache (debian) or sbin/httpd (redhat), and will follow threads newly created.


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    ps auxw | grep -E 'sbin/(apache|httpd)' | awk '{print"-p " $2}' | xargs strace -F
    gormux · 2016-08-04 10:59:58 0
  • Simply add this to whatever apache startup script you have, or if you are on a MAC, create a new automator application. This will show a pretty growl notification whenever theres a new Apache error log entry. Useful for local development


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    /usr/bin/tail -fn0 /path/to/apache_error.log | while read line; do /usr/local/bin/growlnotify --title "Apache Notice" --message "$line"; done &
    jhyland87 · 2013-01-22 05:25:41 0
  • This one-liner will use strace to attach to all of the currently running apache processes output and piped from the initial "ps auxw" command into some awk. Show Sample Output


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    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace
    px · 2011-03-14 21:45:22 7

What Others Think

Is this K bite, or K byte or what? :)
tiagocruz · 463 weeks and 4 days ago
man ps ... rss RSS resident set size, the non-swapped physical memory that a task has used (in kiloBytes). (alias rssize, rsz). ...
ricardoarguello · 463 weeks and 4 days ago
See also: http://www.pixelbeat.org/scripts/ps_mem.py
pixelbeat · 463 weeks and 4 days ago
Depends on the version of ps as -C is not always for matching command names or even a valid option.
drizzt · 463 weeks and 4 days ago
or per pid: ps -ylC httpd | awk '{print $8}' | sed '1d'
unixx · 463 weeks and 4 days ago
Estrange: # ps -o rss -C httpd | tail -n +2 | (sed 's/^/x+=/'; echo x) | bc 1719572 So... 1719572 KB ~= 1679.26 MB? # ./ps_mem.py | grep http Private + Shared = RAM used Program 350.1 MiB + 7.2 MiB = 357.3 MiB httpd (201) What's correct number? :/
tiagocruz · 463 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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