Re: [PATCH v1] perf top: Make zeroing histogram on refresh the default

[Ravi Bangoria]

On 5/17/2024 3:51 AM, Ian Rogers wrote:
> Instead of decaying histograms over time change it so that they are
> zero-ed on each perf top refresh. Previously the option '-z', or
> pressing 'z' in tui mode, would enable this behavior. Decaying samples
> is non-intuitive as it isn't how "top" works. Make zeroing on refresh
> the default and rename the command line options from 'z' to 'Z' and
> 'zero' to 'decay'.
I've also felt `perf top` decay as non-intuitive. Esp. when system becomes
idle after some heavy workload, even decayed samples are far more compared
to samples from currently running processes and thus `perf top` keeps
showing already finished processes at the top, which is kind of confusing.
fwiw:

Acked-by: Ravi Bangoria <ravi.bangoria@xxxxxxx>