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romant
Asked: 2010-01-08 22:15:45 +0800 CST

iometer - cpu utilization not being returned

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everything I want gets picked up from the dynamo process.

Although for some reason the CPU Utilization isn't being presented and recorded.

Any ideas?

Thank you

EDIT:

SYSTEM - Linux x86_64, Virtual Machine, running atop ESX4.0 on an IBM HS21 Blade

linux vmware-esx iometer

1 Answers

  1. Whether your tools works or not CPU measurement from within a VM is utterly pointless, any data you get is flawed. This is because the OS and/or tool assumes it has full control of the (actually virtual) CPU so measurement is based on load over time and time isn't linear in VM-land due to time-slicing.

    Measure from the hypervisor, it's the only way to know what's going on.

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