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* Improve random memcpy benchmarkWilco Dijkstra2020-02-101-29/+57
| | | | | | | | | Improve the random memcpy benchmark. Double the number of copies and increase the memory sizes tested to 512KB. Add a more detailed distribution of memcpy alignment and sizes up to 4096 based on SPEC2017 traces. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Run bench-timing-type with newly built libc.Joseph Myers2020-01-201-1/+4
| | | | | benchtests/timing-type is built with the newly built libc, so should be run with it like actual tests and benchmarks.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-0182-82/+82
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* Add new script for plotting string benchmark JSON outputKrzysztof Koch2019-11-131-0/+395
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a script for visualizing the JSON output generated by existing glibc string microbenchmarks. Overview: plot_strings.py is capable of plotting benchmark results in the following formats, which are controlled with the -p or --plot argument: 1. absolute timings (-p time): plot the timings as they are in the input benchmark results file. 2. relative timings (-p rel): plot relative timing difference with respect to a chosen ifunc (controlled with -b argument). 3. performance relative to max (-p max): for each varied parameter value, plot 1/timing as the percentage of the maximum value out of the plotted ifuncs. 4. throughput (-p thru): plot varied parameter value over timing For all types of graphs, there is an option to explicitly specify the subset of ifuncs to plot using the --ifuncs parameter. For plot types 1. and 4. one can hide/expose exact benchmark figures using the --values flag. When plotting relative timing differences between ifuncs, the first ifunc listed in the input JSON file is the baseline, unless the baseline implementation is explicitly chosen with the --baseline parameter. For the ease of reading, the script marks the statistically insignificant range on the graphs. The default is +-5% but this value can be controlled with the --threshold parameter. To accommodate for the heterogeneity in benchmark results files, one can control i.e the x-axis scale, the resolution (dpi) of the generated figures or the key to access the varied parameter value in the JSON file. The corresponding options are --logarithmic, --resolution or --key. The --key parameter ensures that plot_strings.py works with all files which pass JSON schema validation. The schema can be chosen with the --schema parameter. If a window manager is available, one can enable interactive figure display using the --display flag. Finally, one can use the --grid flag to enable grid lines in the generated figures. Implementation: plot_strings.py traverses the JSON tree until a 'results' array is found and generates a separate figure for each such array. The figure is then saved to a file in one of the available formats (controlled with the --extension parameter). As the tree is traversed, the recursive function tracks the metadata about the test being run, so that each figure has a unique and meaningful title and filename. While plot_strings.py works with existing benchmarks, provisions have been made to allow adding more structure and metadata to these benchmarks. Currently, many benchmarks produce multiple timing values for the same value of the varied parameter (typically 'length'). Mutiple data points for the same parameter usually mean that some other parameter was varied as well, for example, if memmove's src and dst buffers overlap or not (see bench-memmove-walk.c and bench-memmove-walk.out). Unfortunately, this information is not exposed in the benchmark output file, so plot_strings.py has to resort to computing the geometric mean of these multiple values. In the process, useful information about the benchmark configuration is lost. Also, averaging the timings for different alignments can hide useful characterstics of the benchmarked ifuncs. Testing: plot_strings.py has been tested on all existing string microbenchmarks which produce results in JSON format. The script was tested on both Windows 10 and Ubuntu 16.04.2 LTS. It runs on both python 2 and 3 (2.7.12 and 3.5.12 tested). Useful commands: 1. Plot timings for all ifuncs in bench-strlen.out: $ ./plot_strings.py bench-strlen.out 2. Display help: $ ./plot_strings.py -h 3. Plot throughput for __memset_avx512_unaligned_erms and __memset_avx512_unaligned. Save the generated figure in pdf format to 'results/'. Use logarithmic x-axis scale, show grid lines and expose the performance numbers: $ ./plot_strings.py bench.out -o results/ -lgv -e pdf -p thru \ -i __memset_avx512_unaligned_erms __memset_avx512_unaligned 4. Plot relative timings for all ifuncs in bench.out with __generic_memset as baseline. Display percentage difference threshold of +-10%: $ ./plot_strings.py bench.out -p rel -b __generic_memset -t 10 Discussion: 1. I would like to propose relaxing the benchout_strings.schema.json to allow specifying either a 'results' array with 'timings' (as before) or a 'variants' array. See below example: { "timing_type": "hp_timing", "functions": { "memcpy": { "bench-variant": "default", "ifuncs": ["generic_memcpy", "__memcpy_thunderx"], "variants": [ { "name": "powers of 2", "variants": [ { "name": "both aligned", "results": [ { "length": 1, "align1": 0, "align2": 0, "timings": [x, y] }, { "length": 2, "align1": 0, "align2": 0, "timings": [x, y] }, ... { "length": 65536, "align1": 0, "align2": 0, "timings": [x, y] }] }, { "name": "dst misaligned", "results": [ { "length": 1, "align1": 0, "align2": 0, "timings": [x, y] }, { "length": 2, "align1": 0, "align2": 1, "timings": [x, y] }, ... 'variants' array consists of objects such that each object has a 'name' attribute to describe the configuration of a particular test in the benchmark. This can be a description, for example, of how the parameter was varied or what was the buffer alignment tested. The 'name' attribute is then followed by another 'variants' array or a 'results' array. The nesting of variants allows arbitrary grouping of benchmark timings, while allowing description of these groups. Using recusion, it is possible to proceduraly create titles and filenames for the figures being generated.
* Prefer https to http for gnu.org and fsf.org URLsPaul Eggert2019-09-0781-81/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
* Use generic memset/memcpy/memmove in benchtestsWilco Dijkstra2019-08-305-91/+65
| | | | | | | | | | | | | | | | | | | | | | | Use the generic C memset/memcpy/memmove in benchtests since comparing against a slow byte-oriented implementation makes no sense. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> 2019-08-29 Wilco Dijkstra <wdijkstr@arm.com> * benchtests/bench-memcpy.c (simple_memcpy): Remove. (generic_memcpy): Include generic C memcpy. * benchtests/bench-memmove.c (simple_memmove): Remove. (generic_memmove): Include generic C memmove. * benchtests/bench-memset.c (simple_memset): Remove. (generic_memset): Include generic C memset. * benchtests/bench-memset-large.c (simple_memset): Remove. (generic_memset): Include generic C memset. * benchtests/bench-memset-walk.c (simple_memset): Remove. (generic_memset): Include generic C memset. * string/memcpy.c (MEMCPY): Add defines to enable redirection. * string/memset.c (MEMSET): Likewise. * sysdeps/x86_64/memcopy.h: Remove empty file.
* benchtests: Add logb{f} benchmarkAdhemerval Zanella2019-07-083-1/+23
| | | | | | | | * benchtests/Makefile (bench-math): Add logb. * benchtests/logb-inputs: New file. * benchtests/logbf-inputs: New file. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
* benchtests: hypot benchmarkAdhemerval Zanella2019-07-082-1/+17
| | | | | | | | | | Inputs are based on argument reductions from generic and powerpc implementation. * benchtests/Makefile (bench-math): Add hypot. * benchtests/hypot-inputs: New file. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
* Further improve string bench timingWilco Dijkstra2019-06-2812-13/+14
| | | | | | | | | | | | | | | | | | | | | | | Further improve the timings of the string benchmarks. Ensure most take between 1 and 4 seconds to improve accuracy. Overall time taken increases by 35%. Tested on AArch64. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> * benchtests/bench-math-inlines.c: Increase iterations. * benchtests/bench-memcmp.c: Likewise. * benchtests/bench-rawmemchr.c: Likewise. * benchtests/bench-strcmp.c: Likewise. * benchtests/bench-strcpy_chk.c: Likewise. * benchtests/bench-string.h (INNER_LOOP_ITERS8): Add define. (INNER_LOOP_ITERS_MEDIUM): Increase iterations. (INNER_LOOP_ITERS_SMALL): Likewise. * benchtests/bench-strncat.c: Increase iterations. * benchtests/bench-strncmp.c: Increase iterations. * benchtests/bench-strncpy.c: Reduce iterations for wide strings. * benchtests/bench-strrchr.c: Increase iterations. * benchtests/bench-strstr.c: Keep iterations unchanged. * benchtests/bench-strtod.c: Increase iterations.
* Bump up the runtime for "short" benchmarksAnton Youdkevitch2019-06-289-8/+9
| | | | | | | | | | | | | | | | | | | | | Some benchmarks with a very short runtime show significantly different results across runs on Aarch64 - up to tens of percents. Increasing the runtime to 100ms+ makes the deviation under 5%. Tested on Aarch64 and x86-64. Reviewed-by: Carlos O'Donell <carlos@redhat.com> * benchtests/bench-memccpy.c: Replace INNER_LOOP_ITERS with INNER_LOOP_ITERS_LARGE. * benchtests/bench-memchr.c: Likewise. * benchtests/bench-rawmemchr.c: Likewise. * benchtests/bench-strcat.c: Likewise. * benchtests/bench-strchr.c: Likewise. * benchtests/bench-string.h: Likewise. * benchtests/bench-strlen.c: Likewise. * benchtests/bench-strncpy.c: Likewise. * benchtests/bench-strnlen.c: Likewise.
* Fix gcc 9 build errors for make xcheck. [BZ #24556]Stefan Liebler2019-06-192-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following gcc 9 warnings for "make xcheck" / "make bench": -string/tst-strcasestr.c: ../include/bits/../../misc/bits/error.h:42:5: error: ‘%s’ directive argument is null [-Werror=format-overflow=] -argp/argp-test.c: argp-test.c:130:20: error: ‘%d’ directive writing between 1 and 11 bytes into a region of size 10 [-Werror=format-overflow=] argp-test.c:130:19: note: directive argument in the range [-2147483648, 122] argp-test.c:130:5: note: ‘sprintf’ output between 2 and 12 bytes into a destination of size 10 -nss/tst-field.c: tst-field.c:52:7: error: ‘%s’ directive argument is null [-Werror=format-overflow=] -benchtests/bench-strstr.c: ../include/bits/../../misc/bits/error.h:42:5: error: ‘%s’ directive argument is null [-Werror=format-overflow=] -benchtests/bench-malloc-simple.c: bench-malloc-simple.c:93:16: error: iteration 3 invokes undefined behavior [-Werror=aggressive-loop-optimizations] ChangeLog: [BZ #24556] * string/test-strcasestr.c (check_result): Add NULL check. * nss/tst-field.c (check_rewrite): Likewise. * benchtests/bench-strstr.c (do_one_test): Likewise. * string/test-strstr.c (check_result): Likewise. * argp/argp-test.c (popt): Increase size of buf to 12. * benchtests/bench-malloc-simple.c (bench): Do not initialize tests array out of bounds.
* benchtests: Add isnan/isinf/isfinite benchmarkAdhemerval Zanella2019-06-124-1/+67
| | | | | | | | | | | * benchtests/Makefile (bench-math): Add isnan, isinf, and isfinite. (CFLAGS-bench-isnan.c, CFLAGS-bench-isinf.c, CFLAGS-bench-isfinite.c): New rule. * benchtests/isnan-input: New file. * benchtests/isinf-input: New file. * benchtests/isfinite-input: New file. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
* Benchmark strstr hard needlesWilco Dijkstra2019-06-111-0/+79
| | | | | | | | | | | | | | | Benchmark needles which exhibit worst-case performance. This shows that basic_strstr is quadratic and thus unsuitable for large needles. On the other hand the Two-way and new strstr implementations are linear with increasing needle sizes. The slowest cases of the two implementations are within a factor of 2 on several different microarchitectures. Two-way is slowest on inputs which cause a branch mispredict on almost every character. The new strstr is slowest on inputs which almost match and result in many calls to memcmp. Thanks to Szabolcs for providing various hard needles. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> * benchtests/bench-strstr.c (test_hard_needle): New function.
* Improve string benchtest timingWilco Dijkstra2019-05-2112-32/+25
| | | | | | | | | | | | | | | | | | | | | | | | | Improve string benchtest timing. Many tests run for 0.01s which is way too short to give accurate results. Other tests take over 40 seconds which is way too long. Significantly increase the iterations of the short running tests. Reduce number of alignment variations in the long running memcpy walk tests so they take less than 5 seconds. As a result most tests take at least 0.1s and all finish within 5 seconds. * benchtests/bench-memcpy-random.c (do_one_test): Use medium iterations. * benchtests/bench-memcpy-walk.c (test_main): Reduce alignment tests. * benchtests/bench-memmem.c (do_one_test): Use small iterations. * benchtests/bench-memmove-walk.c (test_main): Reduce alignment tests. * benchtests/bench-memset-walk.c (test_main): Reduce alignment tests. * benchtests/bench-strcasestr.c (do_one_test): Use small iterations. * benchtests/bench-string.h (INNER_LOOP_ITERS): Increase iterations. (INNER_LOOP_ITERS_MEDIUM): New define. (INNER_LOOP_ITERS_SMALL): New define. * benchtests/bench-strpbrk.c (do_one_test): Use medium iterations. * benchtests/bench-strsep.c (do_one_test): Use small iterations. * benchtests/bench-strspn.c (do_one_test): Use medium iterations. * benchtests/bench-strstr.c (do_one_test): Use small iterations. * benchtests/bench-strtok.c (do_one_test): Use small iterations.
* benchtests: Enable BIND_NOW if configured with --enable-bind-nowFlorian Weimer2019-04-251-2/+10
| | | | | | | | | | | Benchmarks should reflect distribution build policies, so it makes sense to honor the BIND_NOW configuration for them. This commit keeps using $(+link-tests), so that the benchmarks are linked according to the --enable-hardcoded-path-in-tests configure option. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Reduce benchtests timeWilco Dijkstra2019-04-242-3/+3
| | | | | | | | | | | Reduce the total time taken by benchtests. The malloc thread test takes 4 minutes to run which is significantly more than most other tests. Reduce this to a more reasonable 40 seconds. The math tests take 10 seconds each, eventhough all they do is loop on the same input. Anything more than 1 second runtime is way overkill, so set the limit to 1 second. * benchtests/Makefile (BENCH_DURATION): Set to 1 second. * benchtests/bench-malloc-thread.c (BENCH_DURATION): Set to 10 seconds.
* Improve string benchtestsWilco Dijkstra2019-04-099-141/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | Replace slow byte-oriented tests in several string benchmarks with the generic implementations from the string/ directory so the comparisons are more realistic and useful. * benchtests/bench-stpcpy.c (SIMPLE_STPCPY): Remove function. (generic_stpcpy): New function. * benchtests/bench-stpncpy.c (SIMPLE_STPNCPY): Remove function. (generic_stpncpy): New function. * benchtests/bench-strcat.c (SIMPLE_STRCAT): Remove function. (generic_strcat): New function. * benchtests/bench-strcpy.c (SIMPLE_STRCPY): Remove function. (generic_strcpy): New function. * benchtests/bench-strncat.c (SIMPLE_STRNCAT): Remove function. (STUPID_STRNCAT): Remove function. (generic_strncat): New function. * benchtests/bench-strncpy.c (SIMPLE_STRNCPY): Remove function. (STUPID_STRNCPY): Remove function. (generic_strncpy): New function. * benchtests/bench-strnlen.c (SIMPLE_STRNLEN): Remove function. (generic_strnlen): New function. (memchr_strnlen): New function. * benchtests/bench-strlen.c (generic_strlen): Define for WIDE. (memchr_strlen): Likewise.
* Improve bench-strstrWilco Dijkstra2019-04-091-83/+137
| | | | | | | | | | | | | | | | | | | | | Improve bench-strstr by using an extract from the manual as the input to make the test more realistic. Use the same input for both found and fail cases rather than using a memset of '0' for most of the string, which measures performance of strchr rather than strstr. Add result checking to catch potential errors. Remove the repeated tests at slightly different alignments and add more large needle and haystack testcases. Replace stupid_strstr with an efficient basic implementation. Add the Two-way implementation to simplify comparisons with much faster generic implementations. * benchtests/bench-strstr.c (input): Add realistic input text. (stupid_strstr): Remove function. (basic_strstr): Add function. (twoway_strstr): Add function. (do_one_test): Add result checking. (do_test): Use new input text. Remove accidental early matches. (test_main): Improve range of tests, reduce unaligned cases.
* Improve bench-memmemWilco Dijkstra2019-04-091-17/+62
| | | | | | | | | | Improve bench-memmem by replacing simple_memmem with a more efficient implementation. Add the Two-way implementation to enable direct comparison with the optimized memmem. * benchtests/bench-memmem.c (simple_memmem): Remove function. (basic_memmem): Add function. (twoway_memmem): Add function.
* Remove TIMING_INITWilco Dijkstra2019-04-095-17/+1
| | | | | | | | | | Remove TIMING_INIT since it's no longer used. * benchtests/bench-malloc-simple.c: Remove TIMING_INIT. * benchtests/bench-malloc-thread.c: Likewise. * benchtests/bench-skeleton.c: Likewise. * benchtests/bench-strtod.c: Likewise. * benchtests/bench-timing.h: Likewise.
* Add generic hp-timing supportWilco Dijkstra2019-03-223-48/+9
| | | | | | | | | | | | | | | | | Add missing generic hp_timing support. It uses clock_gettime (CLOCK_MONOTONIC) which has unspecified starting time, nano-second accuracy, and should faster on architectures that implementes the symbol as vDSO. Checked on aarch64-linux-gnu, x86_64-linux-gnu, and i686-linux-gnu. I also checked the builds for all afected ABIs. * benchtests/Makefile (USE_CLOCK_GETTIME) Remove. * benchtests/README: Update description. * benchtests/bench-timing.h: Default to hp-timing. * sysdeps/generic/hp-timing.h (HP_TIMING_DIFF, HP_TIMING_ACCUM_NT, HP_TIMING_PRINT): Remove. (HP_TIMING_NOW): Add generic implementation. (hp_timing_t): Change to uint64_t.
* Refactor hp-timing rtld usageAdhemerval Zanella2019-03-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactor how hp-timing is used on loader code for statistics report. The HP_TIMING_AVAIL and HP_SMALL_TIMING_AVAIL are removed and HP_TIMING_INLINE is used instead to check for hp-timing avaliability. For alpha, which only defines HP_SMALL_TIMING_AVAIL, the HP_TIMING_INLINE is set iff for IS_IN(rtld). Checked on aarch64-linux-gnu, x86_64-linux-gnu, and i686-linux-gnu. I also checked the builds for all afected ABIs. * benchtests/bench-timing.h: Replace HP_TIMING_AVAIL with HP_TIMING_INLINE. * nptl/descr.h: Likewise. * elf/rtld.c (RLTD_TIMING_DECLARE, RTLD_TIMING_NOW, RTLD_TIMING_DIFF, RTLD_TIMING_ACCUM_NT, RTLD_TIMING_SET): Define. (dl_start_final_info, _dl_start_final, dl_main, print_statistics): Abstract hp-timing usage with RTLD_* macros. * sysdeps/alpha/hp-timing.h (HP_TIMING_INLINE): Define iff IS_IN(rtld). (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Remove. * sysdeps/generic/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL, HP_TIMING_NONAVAIL): Likewise. * sysdeps/ia64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc32/sparcv9/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/x86/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/generic/hp-timing-common.h: Update comment with HP_TIMING_AVAIL removal.
* Add some spaces before '('.Joseph Myers2019-02-273-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes various places where a space should have been present before '(' in accordance with the GNU Coding Standards. Most but not all of the fixes in this patch are for calls to sizeof (but it's not exhaustive regarding such calls that should be fixed). Tested for x86_64, and with build-many-glibcs.py. * benchtests/bench-strcpy.c (do_test): Use space before '('. * benchtests/bench-string.h (cmdline_process_function): Likewise. * benchtests/bench-strlen.c (do_test): Likewise. (test_main): Likewise. * catgets/gencat.c (read_old): Likewise. * elf/cache.c (load_aux_cache): Likewise. * iconvdata/bug-iconv8.c (do_test): Likewise. * math/test-tgmath-ret.c (do_test): Likewise. * nis/nis_call.c (rec_dirsearch): Likewise. * nis/nis_findserv.c (__nis_findfastest_with_timeout): Likewise. * nptl/tst-audit-threads.c (do_test): Likewise. * nptl/tst-cancel4-common.h (set_socket_buffer): Likewise. * nss/nss_test1.c (init): Likewise. * nss/test-netdb.c (test_hosts): Likewise. * posix/execvpe.c (maybe_script_execute): Likewise. * stdio-common/tst-fmemopen4.c (do_test): Likewise. * stdio-common/tst-printf.c (do_test): Likewise. * stdio-common/vfscanf-internal.c (__vfscanf_internal): Likewise. * stdlib/fmtmsg.c (NKEYWORDS): Likewise. * stdlib/qsort.c (STACK_SIZE): Likewise. * stdlib/test-canon.c (do_test): Likewise. * stdlib/tst-swapcontext1.c (do_test): Likewise. * string/memcmp.c (OPSIZ): Likewise. * string/test-strcpy.c (do_test): Likewise. (do_random_tests): Likewise. * string/test-strlen.c (do_test): Likewise. (test_main): Likewise. * string/test-strrchr.c (do_test): Likewise. (do_random_tests): Likewise. * string/tester.c (test_memrchr): Likewise. (test_memchr): Likewise. * sysdeps/generic/memcopy.h (OPSIZ): Likewise. * sysdeps/generic/unwind-dw2.c (execute_stack_op): Likewise. * sysdeps/generic/unwind-pe.h (read_sleb128): Likewise. (read_encoded_value_with_base): Likewise. * sysdeps/hppa/dl-machine.h (elf_machine_runtime_setup): Likewise. * sysdeps/hppa/fpu/feupdateenv.c (__feupdateenv): Likewise. * sysdeps/ia64/fpu/sfp-machine.h (TI_BITS): Likewise. * sysdeps/mach/hurd/spawni.c (__spawni): Likewise. * sysdeps/posix/spawni.c (maybe_script_execute): Likewise. * sysdeps/powerpc/fpu/tst-setcontext-fpscr.c (query_auxv): Likewise. * sysdeps/unix/sysv/linux/aarch64/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/arm/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/arm/ioperm.c (init_iosys): Likewise. * sysdeps/unix/sysv/linux/csky/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/m68k/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/nios2/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/spawni.c (maybe_script_execute): Likewise. * sysdeps/unix/sysv/linux/x86/bits/procfs.h (ELF_NGREG): Likewise. * sysdeps/unix/sysv/linux/x86/bits/sigcontext.h (FP_XSTATE_MAGIC2_SIZE): Likewise. * sysdeps/x86/fpu/sfp-machine.h (TI_BITS): Likewise. * time/test_time.c (main): Likewise.
* Break some lines before not after operators.Joseph Myers2019-02-222-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The GNU Coding Standards specify that line breaks in expressions should go before an operator, not after one. This patch fixes various code to do this. It only changes code that appears to be mostly following GNU style anyway, not files and directories with substantially different formatting. It is not exhaustive even for files using GNU style (for example, changes to sysdeps files are deferred for subsequent cleanups). Some files changed are shared with gnulib, but most are specific to glibc. Changes were made manually, with places to change found by grep (so some cases, e.g. where the operator was followed by a comment at end of line, are particularly liable to have been missed by grep, but I did include cases where the operator was followed by backslash-newline). This patch generally does not attempt to address other coding style issues in the expressions changed (for example, missing spaces before '(', or lack of parentheses to ensure indentation of continuation lines properly reflects operator precedence). Tested for x86_64, and with build-many-glibcs.py. * benchtests/bench-memmem.c (simple_memmem): Break lines before rather than after operators. * benchtests/bench-skeleton.c (TIMESPEC_AFTER): Likewise. * crypt/md5.c (md5_finish_ctx): Likewise. * crypt/sha256.c (__sha256_finish_ctx): Likewise. * crypt/sha512.c (__sha512_finish_ctx): Likewise. * elf/cache.c (load_aux_cache): Likewise. * elf/dl-load.c (open_verify): Likewise. * elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise. * elf/readelflib.c (process_elf_file): Likewise. * elf/rtld.c (dl_main): Likewise. * elf/sprof.c (generate_call_graph): Likewise. * hurd/ctty-input.c (_hurd_ctty_input): Likewise. * hurd/ctty-output.c (_hurd_ctty_output): Likewise. * hurd/dtable.c (reauth_dtable): Likewise. * hurd/getdport.c (__getdport): Likewise. * hurd/hurd/signal.h (_hurd_interrupted_rpc_timeout): Likewise. * hurd/hurd/sigpreempt.h (HURD_PREEMPT_SIGNAL_P): Likewise. * hurd/hurdfault.c (_hurdsig_fault_catch_exception_raise): Likewise. * hurd/hurdioctl.c (fioctl): Likewise. * hurd/hurdselect.c (_hurd_select): Likewise. * hurd/hurdsig.c (_hurdsig_abort_rpcs): Likewise. (STOPSIGS): Likewise. * hurd/hurdstartup.c (_hurd_startup): Likewise. * hurd/intr-msg.c (_hurd_intr_rpc_mach_msg): Likewise. * hurd/lookup-retry.c (__hurd_file_name_lookup_retry): Likewise. * hurd/msgportdemux.c (msgport_server): Likewise. * hurd/setauth.c (_hurd_setauth): Likewise. * include/features.h (__GLIBC_USE_DEPRECATED_SCANF): Likewise. * libio/libioP.h [IO_DEBUG] (CHECK_FILE): Likewise. * locale/programs/ld-ctype.c (set_class_defaults): Likewise. * localedata/tests-mbwc/tst_swscanf.c (tst_swscanf): Likewise. * login/tst-utmp.c (do_check): Likewise. (simulate_login): Likewise. * mach/lowlevellock.h (lll_lock): Likewise. (lll_trylock): Likewise. * math/test-fenv.c (ALL_EXC): Likewise. * math/test-fenvinline.c (ALL_EXC): Likewise. * misc/sys/cdefs.h (__attribute_deprecated_msg__): Likewise. * nis/nis_call.c (__do_niscall3): Likewise. * nis/nis_callback.c (cb_prog_1): Likewise. * nis/nis_defaults.c (searchaccess): Likewise. * nis/nis_findserv.c (__nis_findfastest_with_timeout): Likewise. * nis/nis_ismember.c (internal_ismember): Likewise. * nis/nis_local_names.c (nis_local_principal): Likewise. * nis/nss_nis/nis-rpc.c (_nss_nis_getrpcbyname_r): Likewise. * nis/nss_nisplus/nisplus-netgrp.c (_nss_nisplus_getnetgrent_r): Likewise. * nis/ypclnt.c (yp_match): Likewise. (yp_first): Likewise. (yp_next): Likewise. (yp_master): Likewise. (yp_order): Likewise. * nscd/hstcache.c (cache_addhst): Likewise. * nscd/initgrcache.c (addinitgroupsX): Likewise. * nss/nss_compat/compat-pwd.c (copy_pwd_changes): Likewise. (internal_getpwuid_r): Likewise. * nss/nss_compat/compat-spwd.c (copy_spwd_changes): Likewise. * posix/glob.h (__GLOB_FLAGS): Likewise. * posix/regcomp.c (peek_token): Likewise. (peek_token_bracket): Likewise. (parse_expression): Likewise. * posix/regexec.c (sift_states_iter_mb): Likewise. (check_node_accept_bytes): Likewise. * posix/tst-spawn3.c (do_test): Likewise. * posix/wordexp-test.c (testit): Likewise. * posix/wordexp.c (parse_tilde): Likewise. (exec_comm): Likewise. * posix/wordexp.h (__WRDE_FLAGS): Likewise. * resource/vtimes.c (TIMEVAL_TO_VTIMES): Likewise. * setjmp/sigjmp.c (__sigjmp_save): Likewise. * stdio-common/printf_fp.c (__printf_fp_l): Likewise. * stdio-common/tst-fileno.c (do_test): Likewise. * stdio-common/vfprintf-internal.c (vfprintf): Likewise. * stdlib/strfmon_l.c (__vstrfmon_l_internal): Likewise. * stdlib/strtod_l.c (round_and_return): Likewise. (____STRTOF_INTERNAL): Likewise. * stdlib/tst-strfrom.h (TEST_STRFROM): Likewise. * string/strcspn.c (STRCSPN): Likewise. * string/test-memmem.c (simple_memmem): Likewise. * termios/tcsetattr.c (tcsetattr): Likewise. * time/alt_digit.c (_nl_parse_alt_digit): Likewise. * time/asctime.c (asctime_internal): Likewise. * time/strptime_l.c (__strptime_internal): Likewise. * time/sys/time.h (timercmp): Likewise. * time/tzfile.c (__tzfile_compute): Likewise.
* Add missing bench-malloc-simple.c file.Wilco Dijkstra2019-02-141-0/+188
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* Add malloc micro benchmarkWilco Dijkstra2019-02-141-5/+13
| | | | | | | | | | | | | Add a malloc micro benchmark to enable accurate testing of the various paths in malloc and free. The benchmark does a varying number of allocations of a given block size, then frees them again. It tests 3 different scenarios: single-threaded using main arena, multi-threaded using thread-arena, main arena with SINGLE_THREAD_P false. * benchtests/Makefile: Add malloc-simple benchmark. * benchtests/bench-malloc-simple.c: New benchmark.
* benchtests: Remove useless ORIG_SRC in memmove benchmarksSiddhesh Poyarekar2019-02-142-8/+8
| | | | | | | | | | | | | The ORIG_SRC argument is likely a useless relic from the original correctness tests that are not needed in the benchmarks. Remove the argument and use S1 to point to the source to avoid confusion. * benchtests/bench-memmove.c (do_one_test): Remove unused ORIG_SRC. (do_test): Adjust. * benchtests/bench-memmove-large.c (do_one_test): Remove unused ORIG_SRC. (do_test): Adjust.
* String benchtest cleanupWilco Dijkstra2019-02-1219-384/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Continue cleanup of the string benchtests. Remove simplistic byte-oriented versions with faster generic implementations. Remove bcopy/bzero benchmarks (bcopy/bzero are obsolete and never emitted by compilers). Remove builtin versions of memcpy, memset and strlen. Remove all remaining "stupid" implementations given they are always slower than the "simple" variants and thus don't add anything useful. * benchtests/bench-strcasecmp.c (stupid_strcasecmp): Remove. * benchtests/bench-strcasestr.c (stupid_strcasestr): Remove. * benchtests/bench-strchr.c (stupid_strchr): Remove. * benchtests/bench-strcmp.c (stupid_strcmp): Remove. * benchtests/bench-strcspn.c (stupid_strcspn): Remove. * benchtests/bench-strlen.c (builtin_strlen): Remove. * benchtests/bench-strncasecmp.c (stupid_strncasecmp): Remove. * benchtests/bench-strncmp.c (stupid_strncmp): Remove. * benchtests/bench-strpbrk.c (stupid_strpbrk): Remove. * benchtests/bench-strspn.c (stupid_strspn): Remove. * benchtests/Makefile: Remove bench-bcopy.c and bench-bzero.c. * benchtests/bench-bcopy.c: Delete file. * benchtests/bench-bzero.c: Likewise. * benchtests/bench-memccpy.c (stupid_memccpy): Remove. (simple_memccpy): Remove. (generic_memccpy): Add function. * benchtests/bench-memcpy.c: (builtin_memcpy): Remove. * benchtests/bench-memmove.c (simple_bcopy): Remove. * benchtests/bench-mempcpy.c (simple_mempcpy): Remove. (generic_mempcpy): Add new function. * benchtests/bench-memset.c (simple_bzero): Remove. (builtin_bzero): Remove. (builtin_memset): Remove. * benchtests/bench-rawmemchr.c (simple_rawmemchr): Remove. (generic_rawmemchr): Add new function.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2019-01-0182-82/+82
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Improve bench-strlenWilco Dijkstra2018-12-271-14/+20
| | | | | | | | | The current bench-strlen compares against a slow byte-oriented strlen which is not useful given it's too easy to beat. Remove it and compare against the generic C strlen version and memchr. * benchtests/bench-strlen.c (generic_strlen): New function. (memchr_strlen): New function.
* Refactor string benchtestsWilco Dijkstra2018-12-2121-207/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | Refactor string benchtests by moving duplicated defines into bench-string.h. * benchtests/bench-memchr.c: Cleanup defines. * benchtests/bench-memcmp.c: Likewise. * benchtests/bench-memset.c: Likewise. * benchtests/bench-memset-large.c: Likewise. * benchtests/bench-memset-walk.c: Likewise. * benchtests/bench-stpcpy.c: Likewise. * benchtests/bench-stpncpy.c: Likewise. * benchtests/bench-strcat.c: Likewise. * benchtests/bench-strchr.c: Likewise. * benchtests/bench-strcmp.c: Likewise. * benchtests/bench-strcpy.c: Likewise. * benchtests/bench-strcspn.c: Likewise. * benchtests/bench-string.h: Likewise. * benchtests/bench-strlen.c: Likewise. * benchtests/bench-strncat.c: Likewise. * benchtests/bench-strncmp.c: Likewise. * benchtests/bench-strncpy.c: Likewise. * benchtests/bench-strnlen.c: Likewise. * benchtests/bench-strpbrk.c: Likewise. * benchtests/bench-strrchr.c: Likewise. * benchtests/bench-strspn.c: Likewise.
* benchtests: send non-consumable data to stderrLeonardo Sandoval2018-12-121-3/+4
| | | | | | | | | | | Non-consumable data, alias data not related to benchmarks, should be sent to the standard error, thus pipelines can work as expected. * benchtests/scripts/compare_bench.py (do_compare): write to stderr in case stat is not present. * benchtests/scripts/compare_bench.py (plot_graphs): write to stderr in case timings field is not present. Also string showing the output filename goes into the stderr.
* benchtests: include --stats parameterLeonardo Sandoval2018-12-121-9/+18
| | | | | | | | | | | | | | Allows user to pick a statistic, defaulting to min and mean, from command line. At the same time, if stat does not exit, catch the run-time exception and keep comparing the rest of benchmarked functions. Finally, take care of division-by-zero exceptions and as the latter, keep comparing the rest of the functions, turning the script a bit more fault tolerant thus useful. * benchtests/scripts/compare_bench.py (do_compare): Catch KeyError and ZeroDivisorError exceptions. * benchtests/scripts/compare_bench.py (compare_runs): Use stats argument to loop through user provided statistics. * benchtests/scripts/compare_bench.py (main): Include the --stats argument.
* benchtests: keep comparing even if function timings do not matchLeonardo Sandoval2018-12-121-1/+1
| | | | | | | Allows other functions to be processed, making the script a bit more fault tolerant thus useful. * benchtests/scripts/compare_bench.py (compare_runs): Continue instead of return.
* Patch to require Python 3.4 or later to build glibc.Joseph Myers2018-10-291-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes Python 3.4 or later a required tool for building glibc, so allowing changes of awk, perl etc. code used in the build and test to Python code without any such changes needing makefile conditionals or to handle older Python versions. This patch makes the configure test for Python check the version and give an error if Python is missing or too old, and removes makefile conditionals that are no longer needed. It does not itself convert any code from another language to Python, and does not remove any compatibility with older Python versions from existing scripts. Tested for x86_64. * configure.ac (PYTHON_PROG): Use AC_CHECK_PROG_VER. Set critic_missing for versions before 3.4. * configure: Regenerated. * manual/install.texi (Tools for Compilation): Document requirement for Python to build glibc. * INSTALL: Regenerated. * Rules [PYTHON]: Make code unconditional. * benchtests/Makefile [PYTHON]: Likewise. * conform/Makefile [PYTHON]: Likewise. * manual/Makefile [PYTHON]: Likewise. * math/Makefile [PYTHON]: Likewise.
* x86: Support RDTSCP for benchtestsH.J. Lu2018-10-242-0/+15
| | | | | | | | | | | | | RDTSCP waits until all previous instructions have executed and all previous loads are globally visible before reading the counter. RDTSC doesn't wait until all previous instructions have been executed before reading the counter. All x86 processors since 2010 support RDTSCP instruction. This patch adds RDTSCP support to benchtests. * benchtests/Makefile (CPPFLAGS-nonlib): Add -DUSE_RDTSCP if USE_RDTSCP is defined. * sysdeps/x86/hp-timing.h (HP_TIMING_NOW): Use RDTSCP if USE_RDTSCP is defined.
* Don't reduce test timeout to less than defaultAndreas Schwab2018-10-171-3/+0
| | | | | This removes all overrides of TIMEOUT that are less than or equal to the default timeout.
* benchtests: Set float type on --threshold argumentLeonardo Sandoval2018-10-081-1/+1
| | | | | | | | | | | Otherwise, we see the following runtime error when using the parameter: File "./glibc/benchtests/scripts/compare_bench.py", line 46, in do_compare if d > threshold: TypeError: '>' not supported between instances of 'float' and 'str' * benchtests/scripts/compare_bench.py (main): set float type on threshold argument.
* Reallocate buffers for every run in strlenSiddhesh Poyarekar2018-08-161-7/+10
| | | | Try and avoid influencing performance of neighbouring functions.
* Print strlen benchmark output in jsonSiddhesh Poyarekar2018-08-161-15/+38
| | | | Allow reading the benchmark using the compare_strings.py script.
* [benchtests] Add workload test properties to schemaSiddhesh Poyarekar2018-08-111-0/+4
| | | | | | | | Add the workload test properties (max-throughput, latency, etc.) to the schema to prevent benchmark output validation from failing. * benchtests/scripts/benchout.schema.json (properties): Add new properties.
* [benchtests] Add mandatory attributes to workload testsSiddhesh Poyarekar2018-08-111-0/+2
| | | | | | | | Add the duration and iterations attributes to the workloads tests to make the json schema parser happy * benchtests/bench-skeleton.c (main): Add duration and iterations attributes.
* benchtests: Clean up the alloc_bufsSiddhesh Poyarekar2018-08-086-33/+42
| | | | | | | | | | | | | | | | | | | | Drop realloc_bufs in favour of making alloc_bufs transparently reallocate the buffers if it had allocated before. Also consolidate computation of buffer lengths so that they don't get repeated on every reallocation. * benchtests/bench-string.h (buf1_size, buf2_size): New variables. (init_sizes): New function. (test_init): Use it. (alloc_buf, exit_error): New functions. (alloc_bufs): Use ALLOC_BUF. (realloc_bufs): Remove. * benchtests/bench-memcmp.c (do_test): Adjust. * benchtests/bench-memset-large.c (do_test): Likewise. * benchtests/bench-memset-walk.c (do_test): Likewise. * benchtests/bench-memset.c (do_test): Likewise. * benchtests/bench-strncmp.c (do_test): Likewise.
* [benchtests] Fix compare_strings.py for python2Siddhesh Poyarekar2018-08-031-2/+3
| | | | | | | | | Python 2 does not have a FileNotFoundError so drop it in favour of simply printing out the last (and most informative) line of the exception. * benchtests/scripts/compare_strings.py: Import traceback. (parse_file): Pretty-print error.
* benchtests: improve argument parsing through argparse libraryLeonardo Sandoval2018-07-191-21/+19
| | | | | | | | | | | | | The argparse library is used on compare_bench script to improve command line argument parsing. The 'schema validation file' is now optional, reducing by one the number of required parameters. * benchtests/scripts/compare_bench.py (__main__): use the argparse library to improve command line parsing. (__main__): make schema file as optional parameter (--schema), defaulting to benchtests/scripts/benchout.schema.json. (main): move out of the parsing stuff to __main_  and leave it only as caller of main comparison functions.
* Improve strstr performanceWilco Dijkstra2018-07-162-0/+2
| | | | | | | | | | | | | | | | | | Improve strstr performance. Strstr tends to be slow because it uses many calls to memchr and a slow byte loop to scan for the next match. Performance is significantly improved by using strnlen on larger blocks and using strchr to search for the next matching character. strcasestr can also use strnlen to scan ahead, and memmem can use memchr to check for the next match. On the GLIBC bench tests the performance gains on Cortex-A72 are: strstr: +25% strcasestr: +4.3% memmem: +18% On a 256KB dataset strstr performance improves by 67%, strcasestr by 47%. Reviewd-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* benchtests: Add -f/--functions argumentH.J. Lu2018-06-121-10/+42
| | | | | | | | | | | | | On x86-64, there may be multiple IFUNC implementations for a given function. But we may be only interested in a subset of them. This patch adds -f/--functions argument to compare a subset of IFUNC implementations. * benchtests/scripts/compare_strings.py (process_results): Add funcs argument. Compare only functions which are selected. (main): Check if base function is among selected functions. Pass selected functions to process_results. (__main__): Add -f/--functions argument.
* benchtests: Catch exceptions in input argumentsLeonardo Sandoval2018-06-011-10/+24
| | | | | | | | | | | Catch runtime exceptions in case the user provided: wrong base function, attribute(s) or input file. In any of the latter, quit immediately with non-zero return code. * benchtests/scripts/compare_string.py: (process_results) Catch exception in non-existent base_func and catch exception in non-existent attribute. (parse_file) Catch exception in non-existent input file.
* benchtests: Add --no-diff and --no-header optionsLeonardo Sandoval2018-06-011-10/+18
| | | | | | | | | Having a string comparison report with neither diff numbers nor header yields a more useful output to be consumed by other tools. * benchtests/scripts/compare_string.py: Add --no-diff and --no-header options to avoid diff calculation and omit header, respectively. (main): process --no-diff and --no-header
* benchtests: Move iterator declaration into loop headerSiddhesh Poyarekar2018-05-072-5/+3
| | | | | | | | | | | This is a minor style change to move the definition of I to its usage scope instead of at the top of the function. This is consistent with glibc style guidelines and more importantly it was getting in the way of my testing. * benchtests/bench-memcpy-walk.c (do_test): Move declaration of I into loop header. * benchtests/bench-memmove-walk.c (do_test): Likewise.