On Mon, Apr 26, 2021 at 11:00 AM Andi Kleen <a...@linux.intel.com> wrote:
> > There are multiple directional changes in this new tool: > > 1) it uses perf-script trace output (in text) as input profile data; > > I suspect this will break regularly too > > (I personally did numerous changes to perf script output, and also > wrote a lot of parsing scripts) > > The perf script output has some bad problems, e.g. for file names or > processes > with spaces and some other issues. To make it handleable would need some > redesign to actually generate in a machine friendly format. > Andi, thanks for the input. +authors of the llvm-profgen tool for their experience with using perf script output. David > > A perf.data parser should be fine, just don't fill it up with asserts > and "be liberal what you accept" and ignore unknown records. > > -Andi >
