On Sat, 26 Aug 2023 12:11:03 -0400 (EDT) Vladimir Dergachev <volo...@mindspring.com> wrote:
> On Sat, 26 Aug 2023, Ahmad Nouralizadeh wrote: > > > I want to count the processor-initiated memory accesses. On my 4K > > display, a huge number of accesses originate from the iGPU and > > dedicated GPU. I want to exclude these accesses. The IMC counter > > can only track the dedicated GPU accesses. Therefore, I have to > > turn the screen off to exclude those originated from the iGPU. > > Those accesses might not stop with just the display off - some > applications may keep redrawing. > > The simplest solution would be to boot to console mode with X off. > The display will still work, but GPU usage would be minimal. I'm not sure a graphical benchmark will run without a graphical system running? Maybe do the reverse of what I suggested. Run the benchmark but send the output to a remote display. Is it possible to just measure the memory accesses by process somehow? As Vladimir suggests. Since IMC counters appear to be a feature of the powerpc architecture, you might get a better response from some list/forum specific to that architecture. > There is more than one console (usually), you can switch between them > with Alt-F1, Alt-F2, etc.. > > There are also ways to restrict profiling to a single process, > like "perf top -p 12345". > > best > > Vladimir Dergachev > > > > > On Saturday, August 26, 2023, 08:10:15 PM GMT+4:30, Dave Howorth > > <x...@howorth.org.uk> wrote: > > > > > > On Sat, 26 Aug 2023 15:28:52 +0000 (UTC) > > Ahmad Nouralizadeh <ahmadnouraliza...@yahoo.com> wrote: > > > > > I need to run a set of (graphical) benchmarks with the screen > > > disabled. > > > > > > Can I ask why? What is you're trying to accomplish? Somehow affect > > the benchmarks? Stop people seeing the benchmarks being performed? > > > > And what is the benchmark measuring? Elapsed time or CPU time or > > what? > > > > Turn the display off and run the benchmarks by ssh-ing in from > > another machine? > > > >
