git.net

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: number of cores


Eric:

If you change any of memory or cpu over provisioning factors, you need to restart (from GUI or API) all running VM instances, otherwise the reported allocation/available numbers would still reflect data before your changes. If you also add/delete instances at the same time, you could lose track of actual allocated and available resources very quickly until you restart all your instances.

Yiping

On 11/19/18, 3:59 PM, "Eric Lee Green" <eric.lee.green@xxxxxxxxx> wrote:

    On 11/19/18 3:47 PM, Yiping Zhang wrote:
    > Eric:
    >
    > What's your value for global setting cpu.overprovisioning.factor?
    >
    > I have this value set to 3.0. Right now, one of my servers with 32 cores @ 2.0 GHz (with HT enabled), I can allocate a total of 79 vCPU and 139 GHz to 26 VM instances.  That's over 200% over provisioning!
    
    I changed it to 4.0 and restarted the management server first thing. It 
    started out at 1.5. At 1.5, my zone shows 41% usage with the typical 
    workload -- 169.60Ghz / 409.78Ghz.  I have 2x24x3.03ghz and 1x24x2.40ghz 
    servers for a total of 203.04Ghz actual, so even without the multiplier 
    I'm not over provisioning my CPU Mhz.
    
    > On 11/19/18, 6:43 AM, "Andrija Panic" <andrija.panic@xxxxxxxxx> wrote:
    >
    >      Unless someone gives you better answer, I guess it's for fun - to have more
    >      detailed numbers in dashboard (may be it's related to other hypervisor
    >      types, just assuming... or not...)
    >      
    >      Cheers
    >      
    >      On Mon, 19 Nov 2018 at 14:11, Ugo Vasi <ugo.vasi@xxxxxxxxx> wrote:
    >      
    >      > Hi Andrija,
    >      > not having noticed this new voice before I wondered if it is limiting
    >      > the fact of reaching or exceeding the number of physical cores.
    >      >
    >      > What is the purpose of this dashboard pane?
    >      >
    >      >
    >      > Il 19/11/18 12:56, Andrija Panic ha scritto:
    >      > > Hi Ugo,
    >      > >
    >      > > Why would you want to do this, just curious ?
    >      > >
    >      > > I believe it's not possible, but anyway (at least with KVM, probably same
    >      > > for other hypervisors) it doesn't even makes sense/use, since when
    >      > > deploying a VM, ACS query host free/unused number of MHz (GHz), so it's
    >      > not
    >      > > even relevant for ACS - number of cores in not relevant in ACS
    >      > calculations
    >      > > during VM deployment.
    >      > >
    >      > >
    >      > > Cheers,
    >      > > Andrija
    >      > >
    >      > > On Mon, Nov 19, 2018, 11:31 Ugo Vasi <ugo.vasi@xxxxxxxxx.invalid wrote:
    >      > >
    >      > >> Hi all,
    >      > >> in the dashboard of an ACS installation vesion 4.11.1.0 (Ubuntu 16.04
    >      > >> with KVM hypervisor), the new entry "# of CPU Cores" appears.
    >      > >> Is it possible to over-provision like for MHz or storage?
    >      > >>
    >      > >> Thanks
    >      > >>
    >      > >>
    >      > >> --
    >      > >>
    >      > >> *Ugo Vasi* / System Administrator
    >      > >> ugo.vasi@xxxxxxxxx <mailto:ugo.vasi@xxxxxxxxx>
    >      > >>
    >      > >>
    >      > >>
    >      > >>
    >      > >> *Procne S.r.l.*
    >      > >> +39 0432 486 523
    >      > >> via Cotonificio, 45
    >      > >> 33010 Tavagnacco (UD)
    >      > >> www.procne.it <http://www.procne.it/>
    >      > >>
    >      > >>
    >      > >> Le informazioni contenute nella presente comunicazione ed i relativi
    >      > >> allegati possono essere riservate e sono, comunque, destinate
    >      > >> esclusivamente alle persone od alla Società sopraindicati. La
    >      > >> diffusione, distribuzione e/o copiatura del documento trasmesso da parte
    >      > >> di qualsiasi soggetto diverso dal destinatario è proibita sia ai sensi
    >      > >> dell'art. 616 c.p., che ai sensi del Decreto Legislativo n. 196/2003
    >      > >> "Codice in materia di protezione dei dati personali". Se avete ricevuto
    >      > >> questo messaggio per errore, vi preghiamo di distruggerlo e di informare
    >      > >> immediatamente Procne S.r.l. scrivendo all' indirizzo e-mail
    >      > >> info@xxxxxxxxx <mailto:info@xxxxxxxxx>.
    >      > >>
    >      > >>
    >      > >
    >      > >
    >      > >
    >      >
    >      >
    >      > --
    >      >
    >      > *Ugo Vasi* / System Administrator
    >      > ugo.vasi@xxxxxxxxx <mailto:ugo.vasi@xxxxxxxxx>
    >      >
    >      >
    >      >
    >      >
    >      > *Procne S.r.l.*
    >      > +39 0432 486 523
    >      > via Cotonificio, 45
    >      > 33010 Tavagnacco (UD)
    >      > www.procne.it <http://www.procne.it/>
    >      >
    >      >
    >      > Le informazioni contenute nella presente comunicazione ed i relativi
    >      > allegati possono essere riservate e sono, comunque, destinate
    >      > esclusivamente alle persone od alla Società sopraindicati. La
    >      > diffusione, distribuzione e/o copiatura del documento trasmesso da parte
    >      > di qualsiasi soggetto diverso dal destinatario è proibita sia ai sensi
    >      > dell'art. 616 c.p., che ai sensi del Decreto Legislativo n. 196/2003
    >      > "Codice in materia di protezione dei dati personali". Se avete ricevuto
    >      > questo messaggio per errore, vi preghiamo di distruggerlo e di informare
    >      > immediatamente Procne S.r.l. scrivendo all' indirizzo e-mail
    >      > info@xxxxxxxxx <mailto:info@xxxxxxxxx>.
    >      >
    >      >
    >      
    >      --
    >      
    >      Andrija Panić
    >      
    >