Rudder

I have 4 GB RAM configured. Postgres is configured (on the advice of ncharles) with 800M shared_buffers.

The output of top for mem usage is:

# top -b -n 1 | grep -i postgres
 5870 postgres  20   0  953372  27496  27232 S   0.0  0.7   1:22.79 postgres
 5872 postgres  20   0  954036 796240 795264 S   0.0 19.7  16:33.60 postgres
 5873 postgres  20   0  953776 755616 754952 S   0.0 18.7   4:00.80 postgres
 5874 postgres  20   0  953776   8892   8660 S   0.0  0.2   3:36.56 postgres
 5875 postgres  20   0  954596   1480    992 S   0.0  0.0   0:54.97 postgres
 5876 postgres  20   0  102420    836    360 S   0.0  0.0   5:55.41 postgres
 6687 postgres  20   0  954968 801124 799644 S   0.0 19.8 175:37.15 postgres
18559 postgres  20   0  956636 816872 813944 S   0.0 20.2  16:33.29 postgres
18562 postgres  20   0  957768 828240 823896 S   0.0 20.5  19:53.75 postgres
18563 postgres  20   0  957732 791764 787456 S   0.0 19.6   8:28.75 postgres
18615 postgres  20   0  961124 817096 810044 S   0.0 20.2   9:46.15 postgres
18616 postgres  20   0  960116 828488 822224 S   0.0 20.5  25:43.11 postgres
# top -b -n 1 | grep -i slapd
5834 root      20   0 2669604 292584  17892 S   0.0  7.2  32:43.12 slapd
# top -b -n 1 | grep -i java
18190 root      20   0 2596388 1.226g   5048 S   0.0 31.8 242:36.77 java
# top -b -n 1 | grep -i rsyslog
 1074 syslog    20   0  769460   7280   1924 S  31.7  0.2 160:58.41 rsyslogd
# top -b -n 1 | grep -i cf-serverd
 2583 root      20   0  310312   9460   1532 S   0.0  0.2   6:35.29 cf-serverd

Edit (FAR): for more context, the installation is small, with around 100 nodes managed.