Re: VM utilisation issues
Hi Joan,
Yes we have CPU Cap enabled. Is it better for us to turn it off?
FYI this VM is quite large, 32Core 128GB running on AMD7713.
We also have other VMs that manage to show CPU utilisation about 50% with
CPU Cap turned on btw. Im not sure if this info helps?
Regards,
Palash
On Wed, 7 Feb 2024 at 1:39 PM, Joan g wrote:
> Palash,
>
> Does CPU Capping enabled in compute offering?
>
> We are observing similar issues in VM with cpu capping.
>
> Joan.
>
> On Wed, 7 Feb, 2024, 10:33 Palash Biswas, wrote:
>
> > Hi Daan,
> >
> > We measure by using Zabbix Agent inside the VM. Zabbix Agent is calling
> > these keys for accurate CPU Utilisation.
> >
> > Windows: perf_counter["\Processor(_Total)\% Processor Time",1] Linux :
> > mpstat 1 1 | awk '/Average:/ {print 100-$NF}'
> >
> >
> > This VM has 32Core, 128GB RAM
> >
> > Regards,
> > Palash
> >
> >
> > On Tue, 6 Feb 2024 at 11:18 PM, Daan Hoogland
> > wrote:
> >
> > > Palash,
> > > Are you logged in to the VM while measuring? That might explain (part)
> of
> > > the difference.
> > > What utilisation are you referring to? (cpu mem)
> > > In the case of CPU; how many cpus are you measuring? (i.e. 95 ≃ 50*2)
> > >
> > > On Tue, Feb 6, 2024 at 3:29 PM Palash Biswas
> > wrote:
> > >
> > > > Hi Community,
> > > >
> > > > I have a VM. When i monitor the contents of the VM, it shows the
> > > > utilisation is 95% and above.
> > > >
> > > > But from Cloudstack Metrics, it shows only 50% Max Utilisation.
> > > >
> > > > How does Cloudstack monitor the VM Metrics (CPU and Memory). Is there
> > any
> > > > way to make it more accurate?
> > > >
> > > > My Vm stats interval (vm.stats.interval) is set to 6Miliseconds
> (60
> > > > Seconds)
> > > >
> > > > Regards,
> > > > Palash
> > > >
> > > >
> > > >
> > >
> > > --
> > > Daan
> > >
> >
>
Re: VM utilisation issues
Palash,
Does CPU Capping enabled in compute offering?
We are observing similar issues in VM with cpu capping.
Joan.
On Wed, 7 Feb, 2024, 10:33 Palash Biswas, wrote:
> Hi Daan,
>
> We measure by using Zabbix Agent inside the VM. Zabbix Agent is calling
> these keys for accurate CPU Utilisation.
>
> Windows: perf_counter["\Processor(_Total)\% Processor Time",1] Linux :
> mpstat 1 1 | awk '/Average:/ {print 100-$NF}'
>
>
> This VM has 32Core, 128GB RAM
>
> Regards,
> Palash
>
>
> On Tue, 6 Feb 2024 at 11:18 PM, Daan Hoogland
> wrote:
>
> > Palash,
> > Are you logged in to the VM while measuring? That might explain (part) of
> > the difference.
> > What utilisation are you referring to? (cpu mem)
> > In the case of CPU; how many cpus are you measuring? (i.e. 95 ≃ 50*2)
> >
> > On Tue, Feb 6, 2024 at 3:29 PM Palash Biswas
> wrote:
> >
> > > Hi Community,
> > >
> > > I have a VM. When i monitor the contents of the VM, it shows the
> > > utilisation is 95% and above.
> > >
> > > But from Cloudstack Metrics, it shows only 50% Max Utilisation.
> > >
> > > How does Cloudstack monitor the VM Metrics (CPU and Memory). Is there
> any
> > > way to make it more accurate?
> > >
> > > My Vm stats interval (vm.stats.interval) is set to 6Miliseconds (60
> > > Seconds)
> > >
> > > Regards,
> > > Palash
> > >
> > >
> > >
> >
> > --
> > Daan
> >
>
Re: VM utilisation issues
Hi Daan,
We measure by using Zabbix Agent inside the VM. Zabbix Agent is calling
these keys for accurate CPU Utilisation.
Windows: perf_counter["\Processor(_Total)\% Processor Time",1] Linux :
mpstat 1 1 | awk '/Average:/ {print 100-$NF}'
This VM has 32Core, 128GB RAM
Regards,
Palash
On Tue, 6 Feb 2024 at 11:18 PM, Daan Hoogland
wrote:
> Palash,
> Are you logged in to the VM while measuring? That might explain (part) of
> the difference.
> What utilisation are you referring to? (cpu mem)
> In the case of CPU; how many cpus are you measuring? (i.e. 95 ≃ 50*2)
>
> On Tue, Feb 6, 2024 at 3:29 PM Palash Biswas wrote:
>
> > Hi Community,
> >
> > I have a VM. When i monitor the contents of the VM, it shows the
> > utilisation is 95% and above.
> >
> > But from Cloudstack Metrics, it shows only 50% Max Utilisation.
> >
> > How does Cloudstack monitor the VM Metrics (CPU and Memory). Is there any
> > way to make it more accurate?
> >
> > My Vm stats interval (vm.stats.interval) is set to 6Miliseconds (60
> > Seconds)
> >
> > Regards,
> > Palash
> >
> >
> >
>
> --
> Daan
>
Re: VM utilisation issues
Palash, Are you logged in to the VM while measuring? That might explain (part) of the difference. What utilisation are you referring to? (cpu mem) In the case of CPU; how many cpus are you measuring? (i.e. 95 ≃ 50*2) On Tue, Feb 6, 2024 at 3:29 PM Palash Biswas wrote: > Hi Community, > > I have a VM. When i monitor the contents of the VM, it shows the > utilisation is 95% and above. > > But from Cloudstack Metrics, it shows only 50% Max Utilisation. > > How does Cloudstack monitor the VM Metrics (CPU and Memory). Is there any > way to make it more accurate? > > My Vm stats interval (vm.stats.interval) is set to 6Miliseconds (60 > Seconds) > > Regards, > Palash > > > -- Daan
