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benchmarks: Record and replay calls to EXECBUFFER2

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This slightly idealises the behaviour of clients with the aim of
measuring the kernel overhead of different workloads. This test focuses
on the cost of relocating batchbuffers.

A trace file is generated with an LD_PRELOAD intercept around
execbuffer, which we can then replay at our leisure. The replay replaces
the real buffers with a set of empty ones so the only thing that the
kernel has to do is parse the relocations. but without a real workload
we lose the impact of having to rewrite active buffers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Chris Wilson
2015-08-09 17:39:41 +01:00
parent 74a8068086
commit 0393e7288b
5 changed files with 534 additions and 0 deletions
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benchmarks/Makefile.am
+4
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@@ -4,3 +4,7 @@ include Makefile.sources
AM_CPPFLAGS = -I$(top_srcdir) -I$(top_srcdir)/lib
AM_CFLAGS = $(DRM_CFLAGS) $(CWARNFLAGS) $(CAIRO_CFLAGS) $(LIBUNWIND_CFLAGS)
LDADD = $(top_builddir)/lib/libintel_tools.la $(DRM_LIBS) $(PCIACCESS_LIBS) $(CAIRO_LIBS) $(LIBUNWIND_LIBS) -lm
noinst_LTLIBRARIES = generate_trace.la
generate_trace_la_LDFLAGS = -module -avoid-version -no-undefined
generate_trace_la_LIBADD = -ldl