Thanks! Indeed, my program spends majority of time in C code. So for 1.8, would the profiling actually include C/C++ funciton informations? That's actually a major incentive for me to use Go, because it saves so much time reinventing the wheel on tasks like this
On Sun, Jan 15, 2017 at 5:47 PM Ian Lance Taylor <i...@golang.org> wrote: > On Sun, Jan 15, 2017 at 1:04 AM, Yucong Sun <sunyuc...@gmail.com> wrote: > > > > Sorry for replying late. > > > > 1: operating system is linux > > 2. golang 1.7 > > 3. I'm statically linking Go with C++ code, so I guess that is > > -buildmode=c-archive. > > With 1.7, if your program spends most of its time in C code that runs > in threads created by C code, then most of the profiling information > will be discarded. This is fixed in 1.8 > (https://golang.org/cl/30252). So my first suggestion is that you try > the 1.8 release candidate to see if it fixes the problem. > > Ian > > > > On Tue, Jan 10, 2017 at 1:21 PM Ian Lance Taylor <i...@golang.org> > wrote: > >> > >> On Tue, Jan 10, 2017 at 12:52 PM, Yucong Sun <sunyuc...@gmail.com> > wrote: > >> > > >> > I've successfully compile and staticlly linked my C++ project and CGO > , > >> > I > >> > was trying to get on demand CPU profling to work, but it keeps > >> > generating > >> > empty outputs. > >> > > >> > The CPU profiling page mentioned that if code built in C mode, i need > to > >> > do > >> > something with SIGPROF , but no examples were given, could anyone > >> > enlighten > >> > me? > >> > >> What operating system? > >> > >> What version of Go? > >> > >> What is the "CPU profiling page"? Do you mean > >> https://golang.org/pkg/runtime/pprof? The references there to SIGPROF > >> are specific to using -buildmode=c-archive or -buildmode=c-shared. > >> Are you using one of those build modes? > >> > >> 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. For more options, visit https://groups.google.com/d/optout.
