topic Re: 100% CPU utilization on VM host machine in Operating System - HP-UX

100% CPU utilization on VM host machine

Where can i get EVA5000 — Mon, 10 Mar 2014 05:36:30 GMT

Hi All,

100% CPU utilization on VM host machine but on VM guests cpu utilization always is less than 5%.

Could you please let me know what could be the issue here.

Regards,

Mahesh

P.S. This thread has been moved from HP-UX>System Administration to HP-UX > Virtualization. -HP Forum Moderator

Re: 100% CPU utilization on VM host machine

Dave Olker — Fri, 07 Mar 2014 22:00:33 GMT

Have you verified which processes/threads are consuming the high CPU time on the VSP? What does Glance or top show?

Dave

Re: 100% CPU utilization on VM host machine

Where can i get EVA5000 — Fri, 07 Mar 2014 22:02:50 GMT

Hi Dave,

These are the process causing this issue

hpvmapp 12544 root 55.8 22 10.1 34.4gb 49.2gb OTHER
hpvmapp 4020 root 8.6 20 1.7 11.6gb 32.6gb OTHER

Re: 100% CPU utilization on VM host machine

Dave Olker — Fri, 07 Mar 2014 22:42:19 GMT

Assuming you cut/pasted that output from Glance, the columns line up as follows:

User CPU % Thrd Disk Memory Block
Process Name PID Name (1600% max) Cnt IO rate RSS VSS On
-----------------------------------------------------------------------------
hpvmapp 12544 root 55.8 22 10.1 34.4gb 49.2gb OTHER
hpvmapp 4020 root 8.6 20 1.7 11.6gb 32.6gb OTHER

Which means the guests are using 55.8% and 8.6% CPU respectively, or 64.4% of a single CPU. How many CPUs are on the VSP and what is taking up the rest of the CPU time?

Re: 100% CPU utilization on VM host machine

Where can i get EVA5000 — Fri, 07 Mar 2014 23:01:49 GMT

Hi Dave,

On this HPVM HOST machine 4 CPUs and 2 cores per CPU. Please see below output and let me know. On this host Memory utilization is also 100%.

Memory on this server is : 144.0gb

These are process are consuming more Memory on Host machine..

51633280 root 12544 hpvmapp -d aydb1dle
34199680 root 4020 hpvmapp -d bydbledt1

CPU info:
   Intel(R) Itanium 2 9100 series processor (1.59 GHz, 18 MB)
   2 cores, 2 logical processors per socket
   532 MT/s bus, CPU version A1
          Active processor count:
          4 sockets
          8 cores (2 per socket)

Class       I H/W Path Driver    S/W State   H/W Type     Description
========================================================================
processor   0 120       processor   CLAIMED     PROCESSOR    Processor
processor   1 122       processor   CLAIMED     PROCESSOR    Processor
processor   2 124       processor   CLAIMED     PROCESSOR    Processor
processor   3 126       processor   CLAIMED     PROCESSOR    Processor
processor   4 128       processor   CLAIMED     PROCESSOR    Processor
processor   5 130       processor   CLAIMED     PROCESSOR    Processor
processor   6 132       processor   CLAIMED     PROCESSOR    Processor
processor   7 134       processor   CLAIMED     PROCESSOR    Processor

Re: 100% CPU utilization on VM host machine

Dave Olker — Fri, 07 Mar 2014 23:07:23 GMT

I'm still confused.

Your VSP server has 800% CPU capacity and you opened this thread saying the system is running 100% busy. So far you've shown me two processes running on the system that combined consume 64% of a single CPU. That means there's ~730% CPU capacity unaccounted for.

Re: 100% CPU utilization on VM host machine

Where can i get EVA5000 — Fri, 07 Mar 2014 23:20:16 GMT

Yes Dave, 730% CPU capacity unaccounted on this host but I dont why glance is showing like this and restarted mwa as well but still same output. Can you please tell me what could be the issue.

-Mahesh

Re: 100% CPU utilization on VM host machine

karthikbalu — Sun, 09 Mar 2014 07:24:48 GMT

Do you get the similar O/P from other monitoring utility(Vmstat, sar, top) as well? Sometimes it can be a bug from glance...

Is that clustered to migrate a VM's across hosts? If yes, try migrate a VM and monitor the CPU.