> 2022年9月1日 01:36，Kent Overstreet <kent.overstreet@xxxxxxxxx> 写道： > > On Thu, Sep 01, 2022 at 01:02:37AM +0800, Coly Li wrote: >> Can I understand that rate = 1/frequency ? Then frequency 4 is around to rate 0. > > Correct, rate = 1/frequency. > >>> The quantiles are for the duration, they give you an idea of the statistical >>> distribution, see https://en.wikipedia.org/wiki/Quantile >> >> I wanted to ask how to read the quantiles line. Does it mean that 1 ns is >> equally divided by 15 segments, and the counter values are for the divided >> 1/15 ns segments? > > It is the 15 boundaries between 16 equal segments, yes. > >> Quantiles are much humane, standard deviation is scared… Just FYI LOL. > > That's valuable feedback then, maybe we'll keep both. The more expensive part of > time stats is just ingesting data points, but we've got a percpu buffer frontend > for that - just doing a bit more moth doesn't cost much. I don’t have more question so far. Thanks for the detailed replay. Coly Li
