[igt-dev] [PATCH i-g-t 00/17] Media scalability tooling

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

A bunch of patches to trace.pl and gem_wsim which enable simulation and load
balancing analysis of the Virtual Engine work done separately by Chris Wilson.

Culmination is being able to simulate a so called frame split media workloads.

Example workload for this looks like this (annotated only for cover letter):

  X.1.0			    ; disable preemption on context 1
  M.1.VCS1		    ; configure engine map on context 1
  B.1			    ; turn on load balancing on context 1
  X.2.0			    ; \
  M.2.VCS2		    ; -> same as above but for context 2
  B.2			    ; /
  b.2.1.VCS1		    ; bond VCS2 in context 2 with VCS1
  f			    ; create an unsignaled fence
  1.DEFAULT.*.f-1.0	    ; submit an infinite batch to ctx 1, with input fence
  2.DEFAULT.4000-6000.s-1.0 ; submit a 4-6ms batch to ctx 2, with submit fence from the previous step
  a.-3			    ; advance the fence created 3 lines above
  s.-2			    ; wait for ctx 2 batch to complete
  T.-4			    ; terminate ctx 1 infinite batch
  3.RCS.2000-4000.-5/-4.0   ; submit 2-4ms ctx 3 batch to RCS, with data dependencies
  3.VECS.2000.-1.0	    ; submit 2ms ctx 3 batch to VECS, data dependency on previous batch
  4.BCS.1000.-1.0	    ; submit 1ms ctx 4 batch to BCS, data dependency on previous batch
  s.-2			    ; wait for ctx 3 batch to complete
  p.16667		    ; start next iteration to hit 60fps simulation

And can be run for instance like this:

  ./gem_wsim -n <calibration> -w wsim/frame_split_60fps.wsim -r 60 -c 3

This runs three clients of the same workload, 60 iterations each.

This can then also be captured with trace.pl and a HTML representation of the
execution timeline analysed:

  ../scripts/trace.pl --trace ./gem_wsim ...
  perf script | ../scripts/trace.pl -s -c --gpu-timeline --html >timeline.html

[Vis npm module is required to be present in the same directory as the HTML    ]
[file, see trace.pl --help for instructions.				       ]

Tvrtko Ursulin (17):
  lib: Update uapi headers
  trace.pl: Virtual engine support
  trace.pl: Virtual engine preemption support
  wsim/media-bench: i915 balancing
  gem_wsim: Use IGT uapi headers
  gem_wsim: Fix shadowed local
  gem_wsim: Factor out common error handling
  gem_wsim: More wsim_err
  gem_wsim: Submit fence support
  gem_wsim: Extract str to engine lookup
  gem_wsim: Engine map support
  gem_wsim: Save some lines by changing to implicit NULL checking
  gem_wsim: Compact int command parsing with a macro
  gem_wsim: Engine map load balance command
  gem_wsim: Engine bond command
  gem_wsim: Some more example workloads
  gem_wsim: Infinite batch support

 benchmarks/gem_wsim.c                       | 1060 +++++++++++++------
 benchmarks/wsim/README                      |  111 +-
 benchmarks/wsim/frame-split-60fps.wsim      |   18 +
 benchmarks/wsim/high-composited-game.wsim   |   11 +
 benchmarks/wsim/media-1080p-player.wsim     |    5 +
 benchmarks/wsim/medium-composited-game.wsim |    9 +
 include/drm-uapi/amdgpu_drm.h               |   52 +-
 include/drm-uapi/drm.h                      |   16 +
 include/drm-uapi/drm_fourcc.h               |  224 ++++
 include/drm-uapi/drm_mode.h                 |   26 +-
 include/drm-uapi/etnaviv_drm.h              |    6 +
 include/drm-uapi/exynos_drm.h               |  240 +++++
 include/drm-uapi/i915_drm.h                 |  239 ++++-
 include/drm-uapi/msm_drm.h                  |    2 +
 include/drm-uapi/sync_file.h                |   98 --
 include/drm-uapi/tegra_drm.h                |  492 ++++++++-
 include/drm-uapi/v3d_drm.h                  |  194 ++++
 include/drm-uapi/vc4_drm.h                  |   13 +-
 include/drm-uapi/virtgpu_drm.h              |    1 +
 include/drm-uapi/vmwgfx_drm.h               |  166 ++-
 scripts/media-bench.pl                      |    9 +-
 scripts/trace.pl                            |  244 ++++-
 22 files changed, 2705 insertions(+), 531 deletions(-)
 create mode 100644 benchmarks/wsim/frame-split-60fps.wsim
 create mode 100644 benchmarks/wsim/high-composited-game.wsim
 create mode 100644 benchmarks/wsim/media-1080p-player.wsim
 create mode 100644 benchmarks/wsim/medium-composited-game.wsim
 delete mode 100644 include/drm-uapi/sync_file.h
 create mode 100644 include/drm-uapi/v3d_drm.h

-- 
2.17.1