08-28-2001
zombies
"zombie" processes do not consume any CPU or
memory whatsoever. The only system resource they
consume is a slot in the process table.
zombies typically occurr when some process
terminates abnormally and it's parent no longer
exists or the process itself is a process group
leader. You may want to check the man page
on the wait(2) system call or the wait(1)
command (in the case of a shell script).
You might want to find out what is causing
these zombies and eliminate the problem at the
source. In any case, removeing zombies will not
do anything to increase performance for the
reason stated above.
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kill(1) General Commands Manual kill(1)
Name
kill - send a signal to a process
Syntax
kill [-sig] processid...
kill -l
Description
The command sends the TERM (terminate, 15) signal to the specified processes. If a signal name or number preceded by `-' is given as first
argument, that signal is sent instead of terminate. For further information, see
The terminate signal kills processes that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be caught.
By convention, if process number 0 is specified, all members in the process group (that is, processes resulting from the current login) are
signaled. This works only if you use and not if you use To kill a process it must either belong to you or you must be superuser.
The process number of an asynchronous process started with `&' is reported by the shell. Process numbers can also be found by using It
allows job specifiers ``%...'' so process ID's are not as often used as arguments. See for details.
Options
-l Lists signal names. The signal names are listed by `kill -l', and are as given in /usr/include/signal.h, stripped of the common SIG
prefix.
See Also
csh(1), ps(1), kill(2), sigvec(2)
kill(1)