easily strace all your apache *child* processes

strace -c $(ps -u www-data o pid= | sed 's/^/-p/')
On debian parent process is running as root, workers as www-data. You can run strace in backgroud, get its PID, curl your webpage, kill strace and read your stats.

0
By: brablc
2015-11-25 08:10:52

8 Alternatives + Submit Alt

  • 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


    7
    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace
    px · 2011-03-14 21:45:22 7
  • Like the original version except it does not include the parent apache process or the grep process and adds "sudo" so it can be run by user.


    3
    ps h --ppid $(cat /var/run/apache2.pid) | awk '{print"-p " $1}' | xargs sudo strace
    colinmollenhour · 2012-03-21 01:59:41 0
  • Will open strace on all apache process, on systems using sbin/apache (debian) or sbin/httpd (redhat), and will follow threads newly created.


    3
    ps auxw | grep -E 'sbin/(apache|httpd)' | awk '{print"-p " $2}' | xargs strace -F
    gormux · 2016-08-04 10:59:58 3
  • This version also attaches to new processes forked by the parent apache process. That way you can trace all current and *future* apache processes.


    1
    ps auxw | grep sbin/apache | awk '{print"-p " $2}' | xargs strace -f
    msealand · 2013-02-19 19:14:57 0

  • 0
    pgrep -f /usr/sbin/httpd | awk '{print"-p " $1}' | xargs strace
    savagemike · 2015-06-10 22:55:35 4

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johnson20007 · 21 weeks and 4 days ago

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