Re: [PATCH 4/5] perf record: mmap output file - v5
From: Ingo Molnar
Date: Tue Nov 19 2013 - 01:55:09 EST
* Namhyung Kim <namhyung@xxxxxxxxxx> wrote:
> > Well, with 1 khz sampling of a single threaded workload it's 8MB
> > per second - that's 80 MB for 10 seconds profiling - not the end
> > of the world.
>
> We now use 4 khz sampling frequency by default, just FYI. :)
Yes, but if someone samples with 1 khz that's still plenty enough for
a long enough run.
With 4k sampling you coul do 2.5 seconds of profiling and still have
80 MB of data :-)
Thanks,
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/