Performance Counter Tools?

[Alex Merritt]

Hello,

Can anyone point me to tools that run on DragonFly which access CPU
performance counters? Tools like likwid run only on Linux, requiring the
"msr" kernel module (arch/x86/kernel/msr.c), or others use some
Linux-specific APIs, such as perf_events (the Perf tool).

If there are none, what would be required to support one of the common
tools? Could we port the MSR API from Linux (even as a hack, initially)?

Thanks!
Alex
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