Em Thu, Apr 21, 2016 at 12:17:07PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Apr 21, 2016 at 12:48:58PM +0200, Peter Zijlstra escreveu:
> > On Wed, Apr 20, 2016 at 07:47:30PM -0300, Arnaldo Carvalho de Melo wrote:
> > > +++ b/kernel/events/callchain.c
>
> > > @@ -73,7 +81,7 @@ static int
Em Thu, Apr 21, 2016 at 12:48:58PM +0200, Peter Zijlstra escreveu:
> On Wed, Apr 20, 2016 at 07:47:30PM -0300, Arnaldo Carvalho de Melo wrote:
> > The default remains 127, which is good for most cases, and not even hit
> > most of the time, but then for some cases, as reported by Brendan, 1024+
> >
On Wed, Apr 20, 2016 at 07:47:30PM -0300, Arnaldo Carvalho de Melo wrote:
> The default remains 127, which is good for most cases, and not even hit
> most of the time, but then for some cases, as reported by Brendan, 1024+
> deep frames are appearing on the radar for things like groovy, ruby.
yea
Em Wed, Apr 20, 2016 at 05:10:17PM -0600, David Ahern escreveu:
> On 4/20/16 4:47 PM, Arnaldo Carvalho de Melo wrote:
> > # echo 256 > /proc/sys/kernel/perf_event_max_stack
> > # cat /proc/sys/kernel/perf_event_max_stack
> > 256
> I would love to see something like this go in. Right now I h
On 4/20/16 4:47 PM, Arnaldo Carvalho de Melo wrote:
The new file is:
# cat /proc/sys/kernel/perf_event_max_stack
127
Chaging it:
# echo 256 > /proc/sys/kernel/perf_event_max_stack
# cat /proc/sys/kernel/perf_event_max_stack
256
But as soon as there is some event using callchain
On Wed, Apr 20, 2016 at 07:47:30PM -0300, Arnaldo Carvalho de Melo wrote:
> The default remains 127, which is good for most cases, and not even hit
> most of the time, but then for some cases, as reported by Brendan, 1024+
> deep frames are appearing on the radar for things like groovy, ruby.
>
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