Open Stack

I have three node openstack

1. Controller - 16G memory
2. Compute1
3. Compute2

On controller node we have all component running except nova-compute.

Here is the memory usage of controller node and in botton you can see
neutron, nova-conductor and nova-api using most of memory.

[root at controller- ~]# /usr/local/bin/ps_mem.py
 Private  +   Shared  =  RAM used       Program

104.0 KiB +  16.5 KiB = 120.5 KiB       sleep
164.0 KiB +  19.5 KiB = 183.5 KiB       lsmd
172.0 KiB +  16.5 KiB = 188.5 KiB       rngd
224.0 KiB +  42.0 KiB = 266.0 KiB       atd
252.0 KiB +  71.0 KiB = 323.0 KiB       agetty (2)
304.0 KiB + 163.0 KiB = 467.0 KiB       inet_gethost (2)
504.0 KiB +  50.0 KiB = 554.0 KiB       irqbalance
416.0 KiB + 145.0 KiB = 561.0 KiB       ksmtuned
344.0 KiB + 238.0 KiB = 582.0 KiB       mysqld_safe
524.0 KiB +  65.0 KiB = 589.0 KiB       auditd
560.0 KiB +  29.0 KiB = 589.0 KiB       systemd-machined
560.0 KiB +  64.0 KiB = 624.0 KiB       smartd
548.0 KiB + 119.0 KiB = 667.0 KiB       chronyd
600.0 KiB +  75.5 KiB = 675.5 KiB       gssproxy
676.0 KiB +  37.0 KiB = 713.0 KiB       crond
712.0 KiB +  56.0 KiB = 768.0 KiB       nrpe
812.0 KiB +  40.5 KiB = 852.5 KiB       systemd-logind
848.0 KiB +  80.5 KiB = 928.5 KiB       systemd-udevd
852.0 KiB +  90.0 KiB = 942.0 KiB       dbus-daemon
676.0 KiB + 330.0 KiB =   1.0 MiB       avahi-daemon (2)
492.0 KiB + 534.0 KiB =   1.0 MiB       monitor (2)
996.0 KiB +  66.0 KiB =   1.0 MiB       ovsdb-client
  1.1 MiB + 100.0 KiB =   1.2 MiB       master
956.0 KiB + 328.0 KiB =   1.3 MiB       ovsdb-server
  1.2 MiB +  90.0 KiB =   1.3 MiB       lvmetad
  1.3 MiB +  57.0 KiB =   1.4 MiB       nagios
  1.2 MiB + 240.0 KiB =   1.4 MiB       pickup
  1.3 MiB + 243.0 KiB =   1.5 MiB       qmgr
  1.5 MiB +  82.0 KiB =   1.6 MiB       memcached
  1.3 MiB + 541.5 KiB =   1.9 MiB       abrt-watch-log
  1.7 MiB + 263.5 KiB =   1.9 MiB       bash
  1.4 MiB + 712.0 KiB =   2.0 MiB       sudo (2)
  2.4 MiB +  69.0 KiB =   2.4 MiB       epmd
  2.1 MiB + 582.5 KiB =   2.6 MiB       abrtd
  2.6 MiB + 849.0 KiB =   3.4 MiB       sshd (2)
  3.8 MiB + 108.5 KiB =   3.9 MiB       systemd
  4.8 MiB +  30.0 KiB =   4.8 MiB       redis-server
 10.5 MiB + 262.5 KiB =  10.8 MiB       polkitd
 10.1 MiB +   1.0 MiB =  11.1 MiB       libvirtd
 11.9 MiB + 255.5 KiB =  12.2 MiB       neutron-rootwra (2)
 12.7 MiB + 363.0 KiB =  13.0 MiB       tuned
  3.2 MiB +  26.8 MiB =  30.1 MiB       rsyslogd
 37.1 MiB + 262.0 KiB =  37.4 MiB       ceilometer-coll
 38.7 MiB + 677.5 KiB =  39.3 MiB       nova-novncproxy
 41.7 MiB + 227.0 KiB =  41.9 MiB       mongod
 42.2 MiB + 231.5 KiB =  42.4 MiB       ceilometer-agen
 45.9 MiB + 235.0 KiB =  46.1 MiB       neutron-dhcp-ag
 47.7 MiB + 238.0 KiB =  47.9 MiB       neutron-l3-agen
 48.5 MiB + 237.5 KiB =  48.7 MiB       neutron-openvsw
 56.1 MiB + 491.0 KiB =  56.6 MiB       ceilometer-api
 23.6 MiB +  40.0 MiB =  63.6 MiB       systemd-journald
 63.3 MiB + 339.5 KiB =  63.6 MiB       cinder-schedule
 71.8 MiB + 618.0 KiB =  72.5 MiB       ceilometer-alar (2)
 80.5 MiB +   1.2 MiB =  81.7 MiB       ceilometer-poll (2)
 99.9 MiB + 366.0 KiB = 100.2 MiB       nova-cert
101.7 MiB + 366.0 KiB = 102.1 MiB       nova-scheduler
 86.7 MiB +  17.8 MiB = 104.5 MiB       cinder-volume (2)
105.8 MiB + 367.5 KiB = 106.2 MiB       nova-consoleaut
114.1 MiB +   1.2 MiB = 115.3 MiB       nova-compute
116.8 MiB + 621.5 KiB = 117.4 MiB       ovs-vswitchd
145.4 MiB +  39.4 MiB = 184.8 MiB       neutron-metadat (25)
349.3 MiB + 569.5 KiB = 349.9 MiB       mysqld
387.9 MiB + 765.0 KiB = 388.7 MiB       beam.smp
520.6 MiB +  13.2 MiB = 533.8 MiB       httpd (15)
580.5 MiB +  67.1 MiB = 647.6 MiB       glance-api (25)
782.9 MiB +  33.3 MiB = 816.2 MiB       glance-registry (25)
  1.7 GiB +  22.1 MiB =   1.7 GiB       cinder-api (25)
  1.8 GiB +  38.6 MiB =   1.9 GiB       nova-conductor (25)
  2.7 GiB +  49.5 MiB =   2.7 GiB       neutron-server (49)
  2.9 GiB + 194.5 MiB =   3.1 GiB       nova-api (73)
---------------------------------
                         13.6 GiB
=================================


[root at controller ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:          15759       14182         203          97        1373        1020
Swap:          4095           0        4095