Re: [PATCH 1/5] trace: do not disable wake up tracer on output oftrace
From: Ingo Molnar
Date: Thu Jan 22 2009 - 04:30:28 EST
* Ingo Molnar <mingo@xxxxxxx> wrote:
> auto-disabling latency tracing while the trace is being output is
> essential. Measurement should never impact the workload that is being
> measured.
On the other hand - the latencies caused by tracing output itself should be
quite low, correct? If not then that needs fixing too. So i've picked up
your change - lets see how useful the result is.
But "if it hurts, disable tracing before reading the tracing result" method
you expressed is really not acceptable.
Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/