On 8/20/2019 4:34 PM, Jiri Olsa wrote:
On Fri, Aug 16, 2019 at 10:13:43AM +0800, Jin Yao wrote:
SNIP
static void
hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
{
@@ -1662,6 +1794,10 @@ static void data__hpp_register(struct data__file *d, int
idx)
On Fri, Aug 16, 2019 at 10:13:43AM +0800, Jin Yao wrote:
SNIP
> static void
> hpp__entry_unpair(struct hist_entry *he, int idx, char *buf, size_t size)
> {
> @@ -1662,6 +1794,10 @@ static void data__hpp_register(struct data__file *d,
> int idx)
> fmt->color = hpp__color_cycles;
This patch prints the stddev and hist for the cycles diff of
program block. It can help us to understand if the cycles
is noisy or not.
This patch is inspired by Andi Kleen's patch
https://lwn.net/Articles/600471/
We create new option '--cycles-hist'.
Example:
perf record -b ./div
perf record
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