On Fri, 8 May 2015 15:28:59 -0400 Josef Bacik <[email protected]> wrote: > I had to use trace-cmd profile to debug a regression with hhvm recently. > These > are the patches I needed to make trace-cmd profile useful to me. There are a > few changes in here > > 1) Adding --merge to trace-cmd profile. This merges events for like comms > together. HHVM is a huge app that spawns worker threads to handle requests, I > needed all of this data in one place to see how the app as a whole was > behaving, > --merge provides this. > > 2) Fixup the output formatting. I also wanted to see which syscalls were > taking > the longest but this was hard because we were just spitting out the syscall > number and it wasn't in any order, so now all the events are ordered based on > time taken and the syscall names are printed instead of the number. > > 3) Random trace-cmd hist fix, because it didn't work right with instances. > > I've been using these in production for a couple of weeks now and they seem to > work well. Thanks, >
Josef, Thanks a lot! I really appreciate this. I'll take a look at it next week as I have other things on my plate for today. Ping me if I somehow forget to do so. Thanks again, -- Steve -- 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/
