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strange behaviour of the node [message #50803] Wed, 06 November 2013 16:51 Go to next message
spenchev is currently offline  spenchev
Messages: 3
Registered: November 2013
Junior Member
Hello,

We have noticed a strange behaviour of the OpenVZ server that we have. One of the machines on the node is highly loaded. All of it resources are taken, but there is many free resources on the node, as you can see on the below results.

[root@ovz01 ~]# top
top - 18:26:13 up 28 days, 9:02, 1 user, load average: 14.04, 11.09, 7.37
Tasks: 315 total, 21 running, 292 sleeping, 0 stopped, 2 zombie
Cpu(s): 16.7%us, 1.8%sy, 0.0%ni, 81.5%id, 0.0%wa, 0.0%hi, 0.1%si, 0.0%st
Mem: 8031308k total, 6993140k used, 1038168k free, 478168k buffers
Swap: 10485752k total, 0k used, 10485752k free, 5125828k cached

- This is the laverage of all ctids :

[root@ovz01 ~]# vzlist -o ctid,laverage
CTID LAVERAGE
102 0.00/0.00/0.00
105 14.31/11.68/7.90
106 0.00/0.00/0.00
107 0.00/0.00/0.00
108 0.00/0.00/0.00
109 0.00/0.00/0.00

- The CPU utilisation :

[root@ovz01 ~]# vzcpucheck
Current CPU utilization: 1042
Power of the node: 480017

- The kernel version :

[root@ovz01 ~]# uname -a
2.6.32-042stab079.5 #1 SMP Fri Aug 2 17:16:15 MSK 2013 x86_64 x86_64 x86_64 GNU/Linux

My question is - Can we trust the TOP command and only the VM resources are taken, but not the resources of the whole node, or there is another better way to monitor the node resources ?

Thank you in advance!
Re: strange behaviour of the node [message #50822 is a reply to message #50803] Sun, 10 November 2013 22:40 Go to previous messageGo to next message
pavel.odintsov is currently offline  pavel.odintsov
Messages: 24
Registered: February 2010
Junior Member
Hello!

Could you show your /etc/vz/conf/$CTID.conf file?


Re: strange behaviour of the node [message #50833 is a reply to message #50822] Wed, 13 November 2013 09:10 Go to previous messageGo to next message
spenchev is currently offline  spenchev
Messages: 3
Registered: November 2013
Junior Member
Hello,

Thank you for your answer. Please refer to attached zip file.

Best Regards!
  • Attachment: CTID.zip
    (Size: 4.30KB, Downloaded 261 times)
Re: strange behaviour of the node [message #50905 is a reply to message #50833] Wed, 27 November 2013 10:26 Go to previous messageGo to next message
pavel.odintsov is currently offline  pavel.odintsov
Messages: 24
Registered: February 2010
Junior Member
Hello!

Thank you! Could you show top from overloaded container and ps aux from it?


Re: strange behaviour of the node [message #51089 is a reply to message #50803] Thu, 30 January 2014 11:12 Go to previous message
spenchev is currently offline  spenchev
Messages: 3
Registered: November 2013
Junior Member
Hello,

I`m sorry for the late answer.

Please refer to the two attached load logs for a container. Currently we dont have a ''ps aux'' output, but next time when a load happen we will send you the ps aux output. Note that a load can happen 5 times per day, but it can happen only 1 time for a month, so there is no estimate time.

We are using this software to monitor our OpenVZ : download.openvz.org/contrib/utils/monbean/
During a load we receive a email message that container uses all of it resources.

Tell me if you need any additional information.

Regards!
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