On 04/18/2018 03:55 PM, Jack Stalnaker wrote: > Yeah, I realize it's a difficult question with no example. It would be > quite difficult to chop out a chunk of the code showing the 5x slowdown, > though, I think. I was probing for something big or obvious I may have > missed, or some known issue with the later versions, since this is so > dramatic, and since the only thing that has changed is the compiler. The > compilation options are minimal. I'm using -g -Og, and that's it. I have > tried a release build with some finer tuning, but that doesn't show much > improvement. I would use perf or some other tool to look at where your program is spending most of its time and differences between your program compiled with one release vs another. jeff
