Hello, why we have in reports host cores but not logical cpu cores? For example in "Cluster Capacity Vs. Usage" report I always have more vCores then Host Cores. Thank you.
H Alexandr, The vCores are the logical cpu cores, and if you has more vCores than Host Cores it means that you have over allocation for the hosts. So, if on a specific vm one of the cores will be on 100% usage than all the vms using this core will show 100% as well. Best, --- Shirly Radco BI Software Engineer Red Hat Israel Ltd. ----- Original Message -----
From: "Alexandr Krivulya" <shuriku@shurik.kiev.ua> To: users@ovirt.org Sent: Tuesday, May 12, 2015 3:30:32 PM Subject: [ovirt-users] engine-reports portal and cpu cores
Hello, why we have in reports host cores but not logical cpu cores? For example in "Cluster Capacity Vs. Usage" report I always have more vCores then Host Cores. Thank you. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Ок, I understand it. But in admin portal on hosts detail tab I see for example 32 logical cores vs 16 in reports because of Hyper-Threading enabled. All VM's on this host consumes 26 vCores. Does it overallocation? According to report - yes, but actually I think not. Can you clarify? 13.05.2015 10:32, Shirly Radco пишет:
H Alexandr,
The vCores are the logical cpu cores, and if you has more vCores than Host Cores it means that you have over allocation for the hosts. So, if on a specific vm one of the cores will be on 100% usage than all the vms using this core will show 100% as well.
Best, --- Shirly Radco BI Software Engineer Red Hat Israel Ltd.
----- Original Message -----
From: "Alexandr Krivulya" <shuriku@shurik.kiev.ua> To: users@ovirt.org Sent: Tuesday, May 12, 2015 3:30:32 PM Subject: [ovirt-users] engine-reports portal and cpu cores
Hello, why we have in reports host cores but not logical cpu cores? For example in "Cluster Capacity Vs. Usage" report I always have more vCores then Host Cores. Thank you. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On 05/13/2015 10:49 AM, Alexandr Krivulya wrote:
Ок, I understand it. But in admin portal on hosts detail tab I see for example 32 logical cores vs 16 in reports because of Hyper-Threading enabled. All VM's on this host consumes 26 vCores. Does it overallocation? According to report - yes, but actually I think not.
Can you clarify? This article is good reading material for this: http://wahlnetwork.com/2013/09/30/hyper-threading-gotcha-virtual-machine-vcp...
It's still over allocation since you have more logical cores than physical, but it is weird that the database reports something different than the UI. Eli, when hyper-threading is enabled, how is that saved in the database, does the UI display vale change, but the database values stay the same?
13.05.2015 10:32, Shirly Radco пишет:
H Alexandr,
The vCores are the logical cpu cores, and if you has more vCores than Host Cores it means that you have over allocation for the hosts. So, if on a specific vm one of the cores will be on 100% usage than all the vms using this core will show 100% as well.
Best, --- Shirly Radco BI Software Engineer Red Hat Israel Ltd.
----- Original Message -----
From: "Alexandr Krivulya" <shuriku@shurik.kiev.ua> To: users@ovirt.org Sent: Tuesday, May 12, 2015 3:30:32 PM Subject: [ovirt-users] engine-reports portal and cpu cores
Hello, why we have in reports host cores but not logical cpu cores? For example in "Cluster Capacity Vs. Usage" report I always have more vCores then Host Cores. Thank you. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Yaniv Dary Technical Product Manager Red Hat Israel Ltd. 34 Jerusalem Road Building A, 4th floor Ra'anana, Israel 4350109 Tel : +972 (9) 7692306 8272306 Email: ydary@redhat.com IRC : ydary
participants (3)
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Alexandr Krivulya -
Shirly Radco -
Yaniv Dary