Re: [PATCH 05/37] perf tools: Create separate mmap for dummy tracking event

[David Ahern]

On 12/24/14 12:15 AM, Namhyung Kim wrote:
> When multi file support is enabled, a dummy tracking event will be
> used to track metadata (like task, comm and mmap events) for a session
> and actual samples will be recorded in separate files.
>
> Provide separate mmap to the dummy tracking event.  The size is fixed
> to 128KiB (+ 1 page) as the event rate will be lower than samples.  I

Have you tried stress tests like a kernel compile with -j Ncpus (Ncpus = 
16 or higher)?

David
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