[Xen-users] domUs high memory usage (FC5 -- Xen 3.0.2)

[dgreen@xxxxxxxxxxx]

Situation:

I start up my domU's (in a console) and they seem to run at ~75MB (out of
256MB) of memory.  The only thing I have done on the VMs is to use ping to
test RTT's.  I come back to the VM's the next day and notice that all of
them are running ~256MB.  I haven't started any other services.

My environment:

dom0 -- FC5  (2.6.17-1.2157_FC5xen0, using 512MB RAM)
domUs -- FC5  (2.6.17-1.2157_FC5xen0, using 256MB RAM)
domUs HD -- 5GB, only 42% used

domU 'top' output:

top - 13:35:58 up 3 days,  1:02,  1 user,  load average: 0.00, 0.00, 0.00
Tasks:  49 total,   1 running,  48 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0% us,  0.0% sy,  0.0% ni, 100.0% id,  0.0% wa,  0.0% hi,  0.0% si
Mem:    262284k total,   258704k used,     3580k free,    67520k buffers
Swap:   524280k total,        0k used,   524280k free,   127740k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  886 root      16   0 25464  604  420 S  0.0  0.2   0:00.00 hpiod
  891 root      15   0 11856 5064 1160 S  0.0  1.9   0:00.11 python
18360 root      16   0  9040 2700 1760 S  0.0  1.0   0:00.04 cupsd
  997 root      16   0  8324 2108 1032 S  0.0  0.8   0:00.07 sendmail
 1005 smmsp     16   0  7368 1696  856 S  0.0  0.6   0:00.00 sendmail
 1028 root      16   0  5192 1124  576 S  0.0  0.4   0:00.00 crond
  979 root      16   0  4980 1104  784 S  0.0  0.4   0:00.00 sshd
  701 root      15   0  4740  596  316 S  0.0  0.2   0:00.00 rpc.idmapd
 1134 root      15   0  4464 1452 1224 S  0.0  0.6   0:00.00 bash
 1113 haldaemo  15   0  4392 2632 1684 S  0.0  1.0   0:00.03 hald
 1059 xfs       16   0  3660 1572  756 S  0.0  0.6   0:00.00 xfs
 1114 root      24   0  3148 1016  908 S  0.0  0.4   0:00.00 hald-runner
 1103 root      25   0  3144 1184 1064 S  0.0  0.5   0:00.00 cups-config-dae
  715 dbus      15   0  3072  964  776 S  0.0  0.4   0:00.00 dbus-daemon
 1093 avahi     15   0  2816 1448 1272 S  0.0  0.6   0:00.00 avahi-daemon
 1094 avahi     25   0  2816  324  184 S  0.0  0.1   0:00.00 avahi-daemon
 1126 root      17   0  2744 1180  920 S  0.0  0.4   0:00.00 login

Questions:
1) Any recommendations of services to check?
2) What other commands could help diagnose this? 'ps'?
3) Has anyone noticed if any services are getting started and never freed
up when finished?
4) Could dom0 be the culprit?

Thanks in advance for any help.

Vince

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