It can sometimes be useful in such situations to look at the pprof "tree" output style (as opposed to graph).
Than On Sat, Oct 19, 2019 at 4:14 AM Piers Powlesland <pierspowlesl...@gmail.com> wrote: > Kind of, but due to the sheer number of nodes and edged the edges end up > lying on top of each other so in certain cases you end up having to check > the source of several nodes to see which is the caller. > > On Sat, 19 Oct 2019, 03:08 Robert Engels, <reng...@ix.netcom.com> wrote: > >> But also can’t you just find that node in the graph and see the callers? >> >> On Oct 18, 2019, at 8:54 PM, Robert Engels <reng...@ix.netcom.com> wrote: >> >> >> Yes. When using the command pprof viewer there is a way to show the >> hotspots with the callers. Again I don’t have access to dev at the moment. >> >> On Oct 18, 2019, at 8:44 PM, Piers Powlesland <pierspowlesl...@gmail.com> >> wrote: >> >> >> Hi Robert, >> >> I think I found the options you were referring to, and I was able to get >> the whole overview with the following. >> >> go tool pprof -http :9999 -edgefraction 0 -nodefraction 0 -nodecount >> 100000 cpu.prof >> >> Its a bit of a screenfull though, and I was wondering if there is any >> simpler way to find out who is calling what? >> So that I could dig down through top and if the function isn't in my code >> follow the callstack to find what part of my code >> initiated the call. >> >> On Fri, Oct 18, 2019 at 8:52 PM Robert Engels <reng...@ix.netcom.com> >> wrote: >> >>> I am pretty sure there is a way to filter nodes that are less than X %, >>> and some of that filtering is on by default - so you may want to turn that >>> off (can't say for sure since not at dev machine right now). >>> >>> >>> >>> >>> >>> -----Original Message----- >>> >From: Ian Lance Taylor <i...@golang.org> >>> >Sent: Oct 18, 2019 2:43 PM >>> >To: Piers Powlesland <pierspowlesl...@gmail.com> >>> >Cc: golang-nuts <golang-nuts@googlegroups.com> >>> >Subject: Re: [go-nuts] pprof not showing call hierarchy for time.now >>> and time.Until >>> > >>> >On Fri, Oct 18, 2019 at 12:37 PM <pierspowlesl...@gmail.com> wrote: >>> >> >>> >> I used pprof to get an overview of where time is being spent in my >>> latest project and I'm >>> >> getting a result I don't understand. When using the web view, there >>> are certain function >>> >> calls that are taking up a large percentage of the time but they >>> appear un-rooted as in >>> >> there seems to be no parent call calling them. >>> >> >>> >> I have attached a picture of the web view showing just the un-rooted >>> functions. >>> >> >>> >> I generated the profile with the following command. >>> >> >>> >> go test -cpuprofile cpu.prof -count 4 . -run MyTest >>> >> >>> >> and I viewed the profile with the following command. >>> >> >>> >> go tool pprof -http :9999 cpu.prof >>> >> >>> >> I'd really like to track down what is causing all this time in the >>> time package, but I'm >>> >> at a bit of a loss. >>> > >>> >Which version of Go and which GOOS/GOARCH? There have been bugs in >>> >this area in the past, and at least some of them are fixed in 1.13. >>> > >>> >Ian >>> > >>> >-- >>> >You received this message because you are subscribed to the Google >>> Groups "golang-nuts" group. >>> >To unsubscribe from this group and stop receiving emails from it, send >>> an email to golang-nuts+unsubscr...@googlegroups.com. >>> >To view this discussion on the web visit >>> https://groups.google.com/d/msgid/golang-nuts/CAOyqgcWReW9e79szp29F11nmvVEzhZr7O%3D1Qp5WXkGBLwWprBA%40mail.gmail.com >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/876AA5BF-E048-4A7D-8842-9E40B3F9FA26%40ix.netcom.com >> <https://groups.google.com/d/msgid/golang-nuts/876AA5BF-E048-4A7D-8842-9E40B3F9FA26%40ix.netcom.com?utm_medium=email&utm_source=footer> >> . >> >> -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/CAFXacX%3DJrvC8VqUs%2BCQr0SOBgfH4vtO5fyrYGVFidduH067OrA%40mail.gmail.com > <https://groups.google.com/d/msgid/golang-nuts/CAFXacX%3DJrvC8VqUs%2BCQr0SOBgfH4vtO5fyrYGVFidduH067OrA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CA%2BUr55F%2Bn%2BqJzLACB1jY9x9xAdDThDyq6gfpSDs%2BRa1f%3DEgq8A%40mail.gmail.com.
