[Openstack] KVM shows several processes for a single VM on the host

Narayanan, Krishnaprasad narayana at uni-mainz.de
Tue Sep 9 15:08:08 UTC 2014


Hi Chris,



They appear to be processes when I see it in htop. I have attached the screenshot of a VM named "instance-000001bf" that has 4 virtual cores. In total, I can see 6 processes for the above referred VM.



[cid:image001.png at 01CFCC50.9FCAED00]



Can I know is there a way to differentiate between  processes and threads?



Best regards,

Krishnaprasad



-----Original Message-----
From: Chris Friesen [mailto:chris.friesen at windriver.com]
Sent: Dienstag, 9. September 2014 16:31
To: openstack at lists.openstack.org
Subject: Re: [Openstack] KVM shows several processes for a single VM on the host



On 09/09/2014 07:58 AM, Narayanan, Krishnaprasad wrote:

> Hallo all,

>

> I have an OpenStack setup based on Havana with several compute nodes.

> When I instantiate a virtual machine with 1 or more virtual cores, in

> the process list of the compute node, I am able to see more than 1

> process associated to the same VM. The process list that I refer is

> the process which can be seen by running either top or htop.

>

> Can I know the significance of other processes which are associated to

> the same VM? Are these child processes?



Are they separate processes or separate threads?  Separate threads would be expected, but separate processes would not be.



Chris





_______________________________________________

Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack

Post to     : openstack at lists.openstack.org<mailto:openstack at lists.openstack.org>

Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140909/1e09c3c0/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 38818 bytes
Desc: image001.png
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140909/1e09c3c0/attachment.png>


More information about the Openstack mailing list