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This benchmark is an attempt to eliminate cache effects from string benchmarks. The benchmark walks both ways through a large memory area and copies different sizes of memory and alignments one at a time instead of looping around in the same memory area. This is a good metric to have alongside the simple memmove benchmark (which is only really useful for smaller sizes) especially for larger sizes where the likelihood of the call being done only once is pretty high. This benchmark is different from memcpy in that it also tests overlapping copies. * benchtests/bench-memmove-walk.c: New file. * benchtests/Makefile (string-benchset): Add it.
221 lines
7.1 KiB
Makefile
221 lines
7.1 KiB
Makefile
# Copyright (C) 2013-2017 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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# Makefile for benchmark tests. The only useful target here is `bench`.
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# Add benchmark functions in alphabetical order.
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subdir := benchtests
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include ../Makeconfig
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bench-math := acos acosh asin asinh atan atanh cos cosh exp exp2 log log2 \
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modf pow rint sin sincos sinh sqrt tan tanh fmin fmax fminf \
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fmaxf powf trunc truncf expf exp2f logf log2f
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bench-pthread := pthread_once thread_create
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bench-string := ffs ffsll
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bench := $(bench-math) $(bench-pthread) $(bench-string)
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# String function benchmarks.
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string-benchset := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
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mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \
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strcat strchr strchrnul strcmp strcpy strcspn strlen \
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strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
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strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \
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strcoll memcpy-large memcpy-random memmove-large memset-large \
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memcpy-walk memset-walk memmove-walk
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# Build and run locale-dependent benchmarks only if we're building natively.
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ifeq (no,$(cross-compiling))
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wcsmbs-benchset := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \
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wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn \
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wmemchr wmemset wmemcmp
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else
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wcsmbs-benchset :=
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endif
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string-benchset-all := $(string-benchset) ${wcsmbs-benchset}
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ifeq (no,$(cross-compiling))
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# We have to generate locales
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LOCALES := en_US.UTF-8 tr_TR.UTF-8 cs_CZ.UTF-8 fa_IR.UTF-8 fr_FR.UTF-8 \
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ja_JP.UTF-8 si_LK.UTF-8 en_GB.UTF-8 vi_VN.UTF-8 ar_SA.UTF-8 \
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da_DK.UTF-8 pl_PL.UTF-8 pt_PT.UTF-8 el_GR.UTF-8 ru_RU.UTF-8 \
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he_IL.UTF-8 is_IS.UTF-8 es_ES.UTF-8 hi_IN.UTF-8 sv_SE.UTF-8 \
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hu_HU.UTF-8 it_IT.UTF-8 sr_RS.UTF-8 zh_CN.UTF-8
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include ../gen-locales.mk
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endif
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stdlib-benchset := strtod
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stdio-common-benchset := sprintf
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math-benchset := math-inlines
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benchset := $(string-benchset-all) $(stdlib-benchset) $(stdio-common-benchset) \
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$(math-benchset)
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CFLAGS-bench-ffs.c += -fno-builtin
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CFLAGS-bench-ffsll.c += -fno-builtin
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CFLAGS-bench-sqrt.c += -fno-builtin
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CFLAGS-bench-fmin.c += -fno-builtin
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CFLAGS-bench-fminf.c += -fno-builtin
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CFLAGS-bench-fmax.c += -fno-builtin
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CFLAGS-bench-fmaxf.c += -fno-builtin
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CFLAGS-bench-trunc.c += -fno-builtin
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CFLAGS-bench-truncf.c += -fno-builtin
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bench-malloc := malloc-thread
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$(addprefix $(objpfx)bench-,$(bench-math)): $(libm)
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$(addprefix $(objpfx)bench-,$(math-benchset)): $(libm)
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$(addprefix $(objpfx)bench-,$(bench-pthread)): $(shared-thread-library)
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$(objpfx)bench-malloc-thread: $(shared-thread-library)
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# Rules to build and execute the benchmarks. Do not put any benchmark
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# parameters beyond this point.
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# We don't want the benchmark programs to run in parallel since that could
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# affect their performance.
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.NOTPARALLEL:
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bench-extra-objs = json-lib.o
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extra-objs += $(bench-extra-objs)
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others-extras = $(bench-extra-objs)
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include ../Rules
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binaries-bench := $(addprefix $(objpfx)bench-,$(bench))
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binaries-benchset := $(addprefix $(objpfx)bench-,$(benchset))
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binaries-bench-malloc := $(addprefix $(objpfx)bench-,$(bench-malloc))
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# The default duration: 10 seconds.
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ifndef BENCH_DURATION
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BENCH_DURATION := 10
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endif
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CPPFLAGS-nonlib += -DDURATION=$(BENCH_DURATION)
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# Use clock_gettime to measure performance of functions. The default is to use
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# HP_TIMING if it is available.
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ifdef USE_CLOCK_GETTIME
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CPPFLAGS-nonlib += -DUSE_CLOCK_GETTIME
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endif
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DETAILED_OPT :=
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ifdef DETAILED
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DETAILED_OPT := -d
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endif
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# This makes sure CPPFLAGS-nonlib and CFLAGS-nonlib are passed
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# for all these modules.
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cpp-srcs-left := $(binaries-benchset:=.c) $(binaries-bench:=.c) \
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$(binaries-bench-malloc:=.c)
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lib := nonlib
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include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
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bench-deps := bench-skeleton.c bench-timing.h Makefile
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run-bench = $(test-wrapper-env) \
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$(run-program-env) \
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$($*-ENV) $(test-via-rtld-prefix) $${run}
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timing-type := $(objpfx)bench-timing-type
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bench-clean:
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rm -f $(binaries-bench) $(addsuffix .o,$(binaries-bench))
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rm -f $(binaries-benchset) $(addsuffix .o,$(binaries-benchset))
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rm -f $(binaries-bench-malloc) $(addsuffix .o,$(binaries-bench-malloc))
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rm -f $(timing-type) $(addsuffix .o,$(timing-type))
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rm -f $(addprefix $(objpfx),$(bench-extra-objs))
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# Define the bench target only if the target has a usable python installation.
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ifdef PYTHON
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bench: bench-build bench-set bench-func bench-malloc
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else
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bench:
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@echo "The bench target needs python to run."
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@exit 1
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endif
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# Target to only build the benchmark without running it. We generate locales
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# only if we're building natively.
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ifeq (no,$(cross-compiling))
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bench-build: $(gen-locales) $(timing-type) $(binaries-bench) \
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$(binaries-benchset) $(binaries-bench-malloc)
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else
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bench-build: $(timing-type) $(binaries-bench) $(binaries-benchset) \
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$(binaries-bench-malloc)
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endif
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bench-set: $(binaries-benchset)
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for run in $^; do \
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echo "Running $${run}"; \
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$(run-bench) > $${run}.out; \
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done
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bench-malloc: $(binaries-bench-malloc)
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run=$(objpfx)bench-malloc-thread; \
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for thr in 1 8 16 32; do \
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echo "Running $${run} $${thr}"; \
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$(run-bench) $${thr} > $${run}-$${thr}.out; \
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done
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# Build and execute the benchmark functions. This target generates JSON
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# formatted bench.out. Each of the programs produce independent JSON output,
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# so one could even execute them individually and process it using any JSON
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# capable language or tool.
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bench-func: $(binaries-bench)
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{ timing_type=$$($(timing-type)); \
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echo "{\"timing_type\": \"$${timing_type}\","; \
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echo " \"functions\": {"; \
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for run in $^; do \
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if ! [ "x$${run}" = "x$<" ]; then \
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echo ","; \
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fi; \
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echo "Running $${run}" >&2; \
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$(run-bench) $(DETAILED_OPT); \
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done; \
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echo; \
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echo " }"; \
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echo "}"; } > $(objpfx)bench.out-tmp; \
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if [ -f $(objpfx)bench.out ]; then \
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mv -f $(objpfx)bench.out $(objpfx)bench.out.old; \
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fi; \
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mv -f $(objpfx)bench.out-tmp $(objpfx)bench.out
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$(PYTHON) scripts/validate_benchout.py $(objpfx)bench.out \
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scripts/benchout.schema.json
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$(timing-type) $(binaries-bench) $(binaries-benchset) \
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$(binaries-bench-malloc): %: %.o $(objpfx)json-lib.o \
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$(link-extra-libs-tests) \
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$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
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$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
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$(+link-tests)
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$(objpfx)bench-%.c: %-inputs $(bench-deps)
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{ if [ -n "$($*-INCLUDE)" ]; then \
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cat $($*-INCLUDE); \
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fi; \
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$(PYTHON) scripts/bench.py $(patsubst %-inputs,%,$<); } > $@-tmp
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mv -f $@-tmp $@
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