Michael Edwards writes:
>
> Am I going about this wrong?
It seems like a reasonable optimization, but it's likely a lot of work.
> Is there some better way to pursue the
> high-level goal of gathering PMC-based statistics frequently and
> efficiently from all cores, without breaking everything e
I'm working on a system-wide profiling tool that uses perf_event to
gather CPU-local performance counters (L2/L3 cache misses, etc.)
across all CPUs (hyperthreads) of a multi-socket system. We'd like
for the monitoring process to run on a single core, and to be able to
sample at frequent, regular
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