The MHz has 2 uses that I know of in Cloudstack:
1 - it sets the CPU weight (ie priority, higher number gets higher
access to host CPU, at least with KVM)
2 - can be used to get a statistical view of load on a hypervisor
(comparing against the combined MHz of the physical cores).
See this from long time ago which goes further into this (credit goes to
Marcus).
https://lists.apache.org/thread/f10qtbsnvz2df7hr8lhybfr6pwtmkbvz
It does NOT limit the actual MHz of the virtual CPU, I don't think this
is even possible.
HTH
On 2023-03-22 16:38, Alex Mattioli wrote:
I think it's supposed to limit the frequency of the CPU, but I've never
seen it actually do anything.
-----Original Message-----
From: Christian Reichert <christian.reich...@scsynergy.com>
Sent: 22 March 2023 16:49
To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org>
Subject: AW: Adding Tags to Service Offerings in use
Hi Alex,
okay so I'm creating new compute offerings with the tags.
One more question, when creating new offerings it is possible to
specify "CPU in MHz)", what is the exact impact on the offering?
Best regards,
Christian
-----Ursprüngliche Nachricht-----
Von: Alex Mattioli [mailto:alex.matti...@shapeblue.com]
Gesendet: Mittwoch, 22. März 2023 11:06
An: users@cloudstack.apache.org
Betreff: RE: Adding Tags to Service Offerings in use
With computer offerings it's a bit more "dangerous" and your VMs might
not start up properly.
I would suggest creating new compute offerings and "scaling" your VMs
to those, even if the CPU/RAM is the same.
-----Original Message-----
From: Christian Reichert <christian.reich...@scsynergy.com>
Sent: 22 March 2023 08:23
To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org>
Subject: AW: Adding Tags to Service Offerings in use
Hi Alex,
thanks for the feedback, I will try it.
Do you see any problem when doing the same with compute offerings?
Best regards,
Christian
-----Ursprüngliche Nachricht-----
Von: Alex Mattioli [mailto:alex.matti...@shapeblue.com]
Gesendet: Dienstag, 21. März 2023 19:31
An: users@cloudstack.apache.org
Betreff: RE: Adding Tags to Service Offerings in use
Hi Christian,
If you do add the same tags to the corresponding primary storages and
migrate all relevant volumes to those same primary storages then it
should be fine. I've done exactly that in the past without issues.
Cheers
Alex
-----Original Message-----
From: Christian Reichert <christian.reich...@scsynergy.com>
Sent: 21 March 2023 19:26
To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org>
Subject: AW: Adding Tags to Service Offerings in use
Hi Alex,
I will add tags to disk offerings to put disks on separate primary
storages.
Thanks,
Christian
-----Ursprüngliche Nachricht-----
Von: Alex Mattioli [mailto:alex.matti...@shapeblue.com]
Gesendet: Dienstag, 21. März 2023 19:16
An: users@cloudstack.apache.org
Betreff: RE: Adding Tags to Service Offerings in use
Indeed you can only do that in the DB afaik.
As any other manual DB manipulation, you need to be extremely careful.
Which tags are you planning on adding and what for exactly? That will
help evaluate how dangerous (or not) it's likely to be.
Cheers
Alex
From: Christian Reichert <christian.reich...@scsynergy.com>
Sent: 21 March 2023 19:10
To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org>
Subject: Adding Tags to Service Offerings in use
Hi,
is it possible to add tags to service offerings already in use?
On the UI I get an error message but I cloud do it on the database,
good idea or will I end up with some other problems?
Thanks and best regards,
Christian
