I'm getting some conflicting information regarding the memory use of a virtualized server. The most alarming information is this:
Note that the server has only 4GB of RAM allocated, even though committed shows 12GB.
Also, if i run ps aux | grep httpd
I get the following:
root 1566 0.1 9.5 580392 375540 ? Ss Jun18 96:15 /usr/local/apache/bin/httpd -k start -DSSL
root 4212 0.0 9.4 580388 371948 ? S 08:01 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 7674 0.6 9.5 580392 373600 ? S 08:26 0:02 /usr/local/apache/bin/httpd -k start -DSSL
nobody 10894 0.6 9.5 580532 373508 ? S 08:28 0:01 /usr/local/apache/bin/httpd -k start -DSSL
nobody 11668 0.6 9.5 580392 373600 ? S 08:29 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 11669 0.6 9.5 580392 373512 ? S 08:29 0:01 /usr/local/apache/bin/httpd -k start -DSSL
nobody 11975 0.6 9.5 580392 373492 ? S 08:29 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 12108 0.7 9.5 580392 373492 ? S 08:29 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 12993 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13080 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13211 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13496 0.6 9.5 580392 373520 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13497 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13829 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13858 0.6 9.5 580392 373492 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 13963 0.6 9.5 580392 373484 ? S 08:30 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14070 0.7 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14290 0.6 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14404 0.6 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14745 0.6 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14850 0.6 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 14957 0.5 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15061 0.6 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15174 0.8 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15228 0.6 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15263 0.4 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15264 0.5 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15290 0.7 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15291 0.5 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15294 0.4 9.5 580392 373484 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15296 0.6 9.5 580392 373492 ? S 08:31 0:00 /usr/local/apache/bin/httpd -k start -DSSL
nobody 15401 0.5 9.5 580392 373484 ? S 08:32 0:00 /usr/local/apache/bin/httpd -k start -DSSL
root 15506 0.0 0.0 103228 840 pts/0 S+ 08:32 0:00 grep httpd
This totals up to over 294.5% of memory used.
top
gives similar results too.
However, if I run free -m
I get this:
total used free shared buffers cached
Mem: 3831 3647 184 0 257 2358
-/+ buffers/cache: 1031 2799
Swap: 4031 29 4002
This seems OK to me, no sign of overcommitted memory.
The server is relatively quick, there's no unusual downtime/sluggishness, and I'd like to keep it that way. Are the abnormal readings just an anomaly, or something more serious?