Messages in this thread | | | Subject | Re: [PATCH 1/7] Simple Performance Counters: Core Piece | From | (Frank Ch. Eigler) | Date | 31 Jul 2007 21:30:27 -0400 |
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Christoph Lameter <clameter@sgi.com> writes:
> Simple performance counters are a way to measure the performance on > code paths in the Linux kernel. Code must be instrumented with calls > that signal the start and the stop of a measurement. [...]
For what it's worth, this kind of measurement widget could be usefully recast as a pure client of the lttng/systemtap markers that Mathieu is still working on. Instead of the custom pc_start/pc_stop functions, you would have generic markers to identify the start/end spots, and a bit of callback code to compute/export the statistics to procfs.
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