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KernelTrap: Overview of the Perfmon2 Interface

Dec 27, 2005, 08:30 (0 Talkback[s])

"Stephane Eranian posted an overview of the perfmon2 interface, highlighting key features. He begins, 'the goal of the perfmon2 interface is to provide access to the hardware performance counters present in all modern processors.' He goes on to explain, 'the interface is designed to be builtin, very generic, flexible and extensible. It is not designed to support a single application or a small class of monitoring tools. The goal is to avoid fragmentation where you have one tool using one interface. Because we want the interface to be an integral part of the kernel, special care is taken to make it robust and secure. The interface is uniform across all hardware platforms, i.e., it offers the same level of software functionalities on each platform...'"

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