unresponsive ssh sessions

[Rajeev Prasad]

few more things:
1. my VM has private IP addr: 192.168.231.129
2. host machine is on another IP addr scheme (class C)
3. the ssh session hangs if no activity for 1-2 hours.


________________________________
 From: Rajeev Prasad <rp.neuli at yahoo.com>
To: Ubuntu technical support not for general discussions <ubuntu-users at lists.ubuntu.com> 
Sent: Tuesday, April 23, 2013 11:38 AM
Subject: unresponsive ssh sessions
 


I have ubuntu running in a VM on Win 7. problem is, my ssh connections to remote host on ethernet LANs become unresponsive next day (or maybe after some hours). I can see the window fine and if open another session to the same host, i can see my old session on remote host (with command w).

I am guessing ti is because of limited RAM, but I am not sure. I do not run any server App or big script program etc. on this VM, mainly for ssh into remote hosts and run a few small scripts here and there.



Win7 (host) details from Performance Monitor:

___with normal apps running on win7 and nothing unusual running on ubuntu_VM___

used physical memory: 74%

Installed: 4096MB
Total: 4046MB
Available: 1005MB
Cached: 984MB

HW reserve: 50MB
In use: 3040MB
modified: 2MB
standby:
 984MB
free: 22MB

vmware-vmx.exe: working set: 1017832 KB


____VM Resource Allocation details___

VM resource allocation:
 CPU cores: 2
 RAM: 1GB



____VM running____

(ouput of top command)

top - 16:15:19 up 25 days,  1:52, 12 users,  load average: 0.64, 0.32, 0.16
Tasks: 164 total,   1 running, 163 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.2%us,  0.2%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   1012336k total,   805416k used,   206920k free,    41560k buffers
Swap:  1046524k total,   253560k used,   792964k free,   307304k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+ 
 COMMAND                                                                
 2324 rp1396    20   0 1155m  25m 7524 S    0  2.6  44:28.06 compiz                                                                 
 2783 rp1396    20   0 
 571m  60m 6676 S    0  6.2   8:20.78 gnome-terminal                                                         
38409 root      20   0     0    0    0 S    0  0.0   0:00.59
 kworker/0:2                                                            
    1 root      20   0 24436 1960 1036 S    0  0.2   0:07.32 init                                                                   
    2
 root      20   0     0    0    0 S    0  0.0   0:00.31 kthreadd                                                               
    3 root      20   0     0    0    0 S    0  0.0   0:08.15
 ksoftirqd/0                                                            
    6 root      RT   0     0    0    0 S    0  0.0   0:12.33 migration/0                                                            
    7
 root      RT   0     0    0    0 S    0  0.0   0:22.61 watchdog/0                                                             
    8 root      RT   0     0    0    0 S    0  0.0   0:13.41
 migration/1                                                            
   10 root      20   0     0    0    0 S    0  0.0   0:11.42 ksoftirqd/1                                                            
   12
 root      RT   0     0    0    0 S    0  0.0   0:25.58 watchdog/1                                                             
   13 root       0 -20     0    0    0 S    0  0.0   0:00.00
 cpuset                                                                 
   14 root       0 -20     0    0    0 S    0  0.0   0:00.00 khelper  



____VM NOT running____

win7 performance monitor stats:

used physical memory: 49%

Installed: 4096MB
Total: 4046MB
Available: 2042MB
Cached: 1182MB

HW reserve: 50MB
In use: 2003MB
modified: 2MB
standby: 1213MB
free: 818MB

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