Also In case of change in the overcommit value the total capacity will change instantaneously, but the used resource and the total available will change when the capacity checker thread runs. The interval at which this will run can be changed from the global settings.
Thanks, Bharat. On 22-Apr-2015, at 9:50 am, Bharat Kumar <bharat.ku...@citrix.com> wrote: > Hi, > > The change in cpu overcommit factor will not change the amount of resource > that are available to you. It will change the way you want to use the free > resource available at that time. It won’t change > what was already allocated. > > for example if you have deployed the VMs with overcommit say 2 and after a > while you change the overcommit to 3, the used resource will be scaled based > on the change. > changing the overcommit cannot create resource. It can only change the way > you want to use the free resource. So now after the change in overcommit you > can deploy 3 times more VMs (of > a given service offering) than usual using the the resource that is free at > the time of changing the overcommit value. The perviously allocated resource > cannot be freed until you > restart the VMs. > > This link will tell you how resource allocation calculations are made. > https://cwiki.apache.org/confluence/display/CLOUDSTACK/CPU+and+RAM+Overcommit > > Thanks, > Bharat. > > > On 21-Apr-2015, at 11:20 pm, Rafael Weingärtner > <rafaelweingart...@gmail.com<mailto:rafaelweingart...@gmail.com>> wrote: > > I have not looked at the code, but that seems odd. > Restarting VMs instances to update the resource usage/resource availability > when changing the overprovisioning factor. > > On Tue, Apr 21, 2015 at 12:51 PM, S. Brüseke - proIO GmbH < > s.brues...@proio.com<mailto:s.brues...@proio.com>> wrote: > > Please try to stop and start the vm. Maybe reboot is not working here. You > should start to see more free CPU after the first vm. > > Mit freundlichen Grüßen / With kind regards, > > Swen Brüseke > > -----Ursprüngliche Nachricht----- > Von: Ugo Vasi [mailto:ugo.v...@procne.it] > Gesendet: Dienstag, 21. April 2015 16:40 > An: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org> > Betreff: Re: AW: cpu overprovisioning > > Hi Swen, > I try rebboting 2 vm but the amount of cpu MHz is not changed. Do I have > to restart all vm before you see a change? > > > Il 21/04/2015 16:16, S. Brüseke - proIO GmbH ha scritto: > This is because the factor of overprovisioning is attached to the > instance too! And this factor is only changing after rebooting the instance. > So after a change of cpu.overprovisioning.factor you need to reboot all > instances on this cluster which were running before this change was made. > > Mit freundlichen Grüßen / With kind regards, > > Swen Brüseke > > -----Ursprüngliche Nachricht----- > Von: Ugo Vasi [mailto:ugo.v...@procne.it] > Gesendet: Dienstag, 21. April 2015 16:06 > An: users@cloudstack.apache.org<mailto:users@cloudstack.apache.org> > Betreff: Re: cpu overprovisioning > > If I change the over-provisioning ratio in cluster-relative settings > (infrastructure->cluser->cluster-name->settings) the dashboard show the > sum of real GHz the overprovisioned amount of GHz (324GHz) as aspected, but > after a while also the sum of Ghz is multiplied by the same factor making > it unnecessary... > > Il 21/04/2015 15:26, Bharat Kumar ha scritto: > In case of cloudstack, cpu capacity for host is total of cpus * no of > Ghz * overporvisoning. > > total capacity = sum of capacities of individual hosts. > > Thanks, > Bharat. > > On 21-Apr-2015, at 6:49 pm, Abhinandan Prateek < > abhinandan.prat...@shapeblue.com<mailto:abhinandan.prat...@shapeblue.com>> > wrote: > > Available CPU will be 3 times the actual CPU when over provisioned by > 3. > > The UI not showing the over provisioned value seems like a bug. > > -abhi > > > On 21-Apr-2015, at 6:34 pm, Ugo Vasi > <ugo.v...@procne.it<mailto:ugo.v...@procne.it>> wrote: > > Hi all, > we have a cluster of three machines with 16 CPU at 2.2GHz each and we > have set a cpu-overprovizioning to 3. > > I would expect that the CPU system capacity of the dashboard appear > with the sum of megahertz CPUs multiplied by three instead I get the real > sum (108MHz). > > I do not understand if this overprovisioning allows me to allocate > more MHz of real ones asthe documentation say since in reality the virtual > machines occupy on average only 20% of the computing power. > > thanks in advance > > -- > > U g o V a s i <ugo.v...@procne.it<mailto:ugo.v...@procne.it>> > P r o c n e s.r.l >) > via Cotonificio 45 33010 Tavagnacco IT > phone: +390432486523 fax: +390432486523 > > Le informazioni contenute in questo messaggio sono riservate e > confidenziali ed è vietata la diffusione in qualunque modo eseguita. > Qualora Lei non fosse la persona a cui il presente messaggio è > destinato, La invitiamo ad eliminarlo e a non leggerlo, dandocene > gentilmente comunicazione. > Per qualsiasi informazione si prega di contattare > supp...@procne.it<mailto:supp...@procne.it> . > Rif. 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Any > views or opinions expressed are solely those of the author and do not > necessarily represent those of Shape Blue Ltd or related companies. If you > are not the intended recipient of this email, you must neither take any > action based upon its contents, nor copy or show it to anyone. Please > contact the sender if you believe you have received this email in error. > Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue > Services India LLP is a company incorporated in India and is operated under > license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a > company incorporated in Brasil and is operated under license from Shape > Blue Ltd. ShapeBlue SA Pty Ltd is a company registered by The Republic of > South Africa and is traded under license from Shape Blue Ltd. ShapeBlue is > a registered trademark. > > > > > > > -- > > U g o V a s i <ugo.v...@procne.it<mailto:ugo.v...@procne.it>> > P r o c n e s.r.l >) > via Cotonificio 45 33010 Tavagnacco IT > phone: +390432486523 fax: +390432486523 > > Le informazioni contenute in questo messaggio sono riservate e > confidenziali ed è vietata la diffusione in qualunque modo eseguita. > Qualora Lei non fosse la persona a cui il presente messaggio è > destinato, La invitiamo ad eliminarlo e a non leggerlo, dandocene > gentilmente comunicazione. > Per qualsiasi informazione si prega di contattare > supp...@procne.it<mailto:supp...@procne.it> . > Rif. D.L. 196/2003 > > > > > > - proIO GmbH - > Geschäftsführer: Swen Brüseke > Sitz der Gesellschaft: Frankfurt am Main > > USt-IdNr. DE 267 075 918 > Registergericht: Frankfurt am Main - HRB 86239 > > Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte > Informationen. > Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich > erhalten haben, > informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. > Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail sind > nicht gestattet. > > This e-mail may contain confidential and/or privileged information. > If you are not the intended recipient (or have received this e-mail in > error) please notify > the sender immediately and destroy this e-mail. > Any unauthorized copying, disclosure or distribution of the material in > this e-mail is strictly forbidden. > > > > > > -- > Rafael Weingärtner >
