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

From: David Ahern
Date: Fri Dec 26 2014 - 11:52:33 EST

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)?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at