Shared memory - using ps(1)
Top shows shared memory, but I'm not clear how to read shared memory
with ps. I'm curious how much total memory these Apache process are
using -- and how much is shared between the processes.
Does RSS include memory that might be shared with other processes?
$ ps --ppid 29903 -F
UID PID PPID C SZ RSS PSR STIME TTY TIME CMD
112 29908 29903 1 16016 46480 0 18:52 ? 00:00:04 /usr/sbin/apache2 -k start -DSSL
112 29909 29903 1 15908 46160 0 18:52 ? 00:00:03 /usr/sbin/apache2 -k start -DSSL
112 29910 29903 1 16002 46556 0 18:52 ? 00:00:04 /usr/sbin/apache2 -k start -DSSL
112 29911 29903 0 15528 44568 0 18:52 ? 00:00:01 /usr/sbin/apache2 -k start -DSSL
112 29912 29903 0 15759 45504 0 18:52 ? 00:00:01 /usr/sbin/apache2 -k start -DSSL
112 29918 29903 0 16007 46452 0 18:52 ? 00:00:02 /usr/sbin/apache2 -k start -DSSL
112 29920 29903 0 16067 46748 0 18:52 ? 00:00:02 /usr/sbin/apache2 -k start -DSSL
$ ps --ppid 29903 v
PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
29908 ? S 0:04 2 364 63699 46480 5.1 /usr/sbin/apache2 -k start -DSSL
29909 ? S 0:03 0 364 63267 46160 5.0 /usr/sbin/apache2 -k start -DSSL
29910 ? S 0:04 0 364 63643 46556 5.1 /usr/sbin/apache2 -k start -DSSL
29911 ? S 0:01 1 364 61747 44568 4.9 /usr/sbin/apache2 -k start -DSSL
29912 ? S 0:01 4 364 62671 45504 5.0 /usr/sbin/apache2 -k start -DSSL
29918 ? S 0:02 1 364 63663 46452 5.1 /usr/sbin/apache2 -k start -DSSL
29920 ? S 0:02 4 364 63903 46748 5.1 /usr/sbin/apache2 -k start -DSSL
Also, ps is always showing the UID # instead of the name. Shouldn't
that come from /etc/passwd?
$ fgrep 112 /etc/passwd
subversion:x:112:112:subversion:/var/lib/projects:/bin/sh
--
Bill Moseley
moseley@hank.org
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