On Wed, Oct 21, 2015 at 1:06 AM, Ingo Molnar <[email protected]> wrote: > > * Arnaldo Carvalho de Melo <[email protected]> wrote: > >> Indeed, finding a default that is deemed adequate for most people is, ho-hum, >> difficult 8-) >> >> Ingo, what do you think? > > So I think the new default is a lot more intuitive, because it starts with a > high > level top-down 'overview' kind of output, allowing one to drill down to the > details. >
Yes, it may be more intuitive. > That's what most other tools do as well by default, and people migrating to > perf > found it pretty confusing that we do a bottom-up kind of callgraph. > [...] But I don't think it's commonplace. Which other tools do this? Java Flight Recorder? GUIs? Certainly not text-based system profilers or debuggers (I made a list in another email). Although, these are usually printing entire stacks. So the most alien change would be to flip the "perf script" order (please don't do this). You could argue that the perf report/top tree view is not commonplace from other text-based profilers or debuggers, so changing it won't be as confusing. In fact, it's like a sideways flame graph (except it doesn't fit on the screen!). Brendan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
