Hi,
Is anyone here using Cloud Volumes ONTAP in Azure? I’m trying to figure out why it is the Azure dashboard claims our CVO instance is always running at 100% CPU, but if one ssh’s to the virtual appliance and does a sysstat -m on the node it shows all cpus at 0%-1%. Any ideas on the discrepancy between what Azure sees and what ONTAP claims?
— Scott
I don't know the exact details, but it's connected to resource allocation. You want the storage system to always respond promptly, and there's code in CVO that makes sure that it's already ready to run and response promptly to IO. A side-effect is that the dashboard thinks the CPU is always busy. It's not really busy, it's just ready to be busy.
You'll need to use the native NetApp monitoring tools to know the actual CPU utilization.
-----Original Message----- From: SE s.eno@me.com Sent: Monday, March 4, 2019 1:35 PM To: Toasters toasters@teaparty.net Subject: Azure CVO and CPU
Hi,
Is anyone here using Cloud Volumes ONTAP in Azure? I’m trying to figure out why it is the Azure dashboard claims our CVO instance is always running at 100% CPU, but if one ssh’s to the virtual appliance and does a sysstat -m on the node it shows all cpus at 0%-1%. Any ideas on the discrepancy between what Azure sees and what ONTAP claims?
— Scott
Thank you sir! I guess as long as there isn’t a cost associated with the “high cpu” usage there’s no real issue other than throwing off the data collected by OCI from our subscription. CVO will always show as the highest utilized VM from a CPU perspective. ¯_(ツ)_/¯
Sent from my iPad
On Mar 4, 2019, at 4:36 PM, Steiner, Jeffrey Jeffrey.Steiner@netapp.com wrote:
I don't know the exact details, but it's connected to resource allocation. You want the storage system to always respond promptly, and there's code in CVO that makes sure that it's already ready to run and response promptly to IO. A side-effect is that the dashboard thinks the CPU is always busy. It's not really busy, it's just ready to be busy.
You'll need to use the native NetApp monitoring tools to know the actual CPU utilization.
-----Original Message----- From: SE s.eno@me.com Sent: Monday, March 4, 2019 1:35 PM To: Toasters toasters@teaparty.net Subject: Azure CVO and CPU
Hi,
Is anyone here using Cloud Volumes ONTAP in Azure? I’m trying to figure out why it is the Azure dashboard claims our CVO instance is always running at 100% CPU, but if one ssh’s to the virtual appliance and does a sysstat -m on the node it shows all cpus at 0%-1%. Any ideas on the discrepancy between what Azure sees and what ONTAP claims?
— Scott
You should be able to use OCI to monitor the ONTAP Cloud instance as a storage system. That should show accurate CPU utilization. Monitoring it as a simple Azure VM won't work, as you've seen.
From: S Eno s.eno@me.com Sent: Monday, March 4, 2019 9:11 PM To: Steiner, Jeffrey Jeffrey.Steiner@netapp.com Cc: Toasters toasters@teaparty.net Subject: Re: Azure CVO and CPU
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Thank you sir! I guess as long as there isn’t a cost associated with the “high cpu” usage there’s no real issue other than throwing off the data collected by OCI from our subscription. CVO will always show as the highest utilized VM from a CPU perspective. ¯_(ツ)_/¯ Sent from my iPad
On Mar 4, 2019, at 4:36 PM, Steiner, Jeffrey <Jeffrey.Steiner@netapp.commailto:Jeffrey.Steiner@netapp.com> wrote: I don't know the exact details, but it's connected to resource allocation. You want the storage system to always respond promptly, and there's code in CVO that makes sure that it's already ready to run and response promptly to IO. A side-effect is that the dashboard thinks the CPU is always busy. It's not really busy, it's just ready to be busy.
You'll need to use the native NetApp monitoring tools to know the actual CPU utilization.
-----Original Message----- From: SE <s.eno@me.commailto:s.eno@me.com> Sent: Monday, March 4, 2019 1:35 PM To: Toasters <toasters@teaparty.netmailto:toasters@teaparty.net> Subject: Azure CVO and CPU
Hi,
Is anyone here using Cloud Volumes ONTAP in Azure? I’m trying to figure out why it is the Azure dashboard claims our CVO instance is always running at 100% CPU, but if one ssh’s to the virtual appliance and does a sysstat -m on the node it shows all cpus at 0%-1%. Any ideas on the discrepancy between what Azure sees and what ONTAP claims?
— Scott
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S Eno -
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Steiner, Jeffrey