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2023-05-18benchtests: Reformat Makefile.Carlos O'Donell1-15/+32
Reflow all long lines adding comment terminators. Sort all reflowed text using scripts/sort-makefile-lines.py. No regressions running microbenchmarks. No code generation changes observed in binary artifacts. No regressions on x86_64 and i686.
2023-05-03Enable libmvec support for AArch64Joe Ramsay1-0/+88
This patch enables libmvec on AArch64. The proposed change is mainly implementing build infrastructure to add the new routines to ABI, tests and benchmarks. I have demonstrated how this all fits together by adding implementations for vector cos, in both single and double precision, targeting both Advanced SIMD and SVE. The implementations of the routines themselves are just loops over the scalar routine from libm for now, as we are more concerned with getting the plumbing right at this point. We plan to contribute vector routines from the Arm Optimized Routines repo that are compliant with requirements described in the libmvec wiki. Building libmvec requires minimum GCC 10 for SVE ACLE. To avoid raising the minimum GCC by such a big jump, we allow users to disable libmvec if their compiler is too old. Note that at this point users have to manually call the vector math functions. This seems to be acceptable to some downstream users. Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
2023-04-17Benchtests: Adjust timingWilco Dijkstra11-11/+11
Adjust iteration counts so benchmarks don't run too slowly or quickly. Ensure benchmarks take less than 10 seconds on older, slower cores and more than 0.5 seconds on fast cores. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-04-04compare_strings.py : Add --gmean flagNisha Menon1-2/+18
To calculate geometric mean for string benchmark results. Signed-off-by: Nisha Poyarekar <nisha.s.menon@gmail.com>
2023-04-03benchtests: Add fmodf benchmarkAdhemerval Zanella Netto2-0/+2183
1. Subnormals: 128 inputs. 2. Normal numbers with large exponent difference (|x/y| > 2^8): 1024 inputs between FLT_MIN and FLT_MAX; 3. Close exponents (ey >= -103 and |x/y| < 2^8): 1024 inputs with exponents between -10 and 10. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2023-04-03benchtests: Add fmod benchmarkAdhemerval Zanella Netto2-0/+2183
Add three different dataset, from random floating point numbers: 1. Subnormals: 128 inputs. 2. Normal numbers with large exponent difference (|x/y| > 2^52): 1024 inputs between DBL_MIN and DBL_MAX; 3. Close exponents (ey >= -907 and |x/y| < 2^52): 1024 inputs with exponents between -10 and 10. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
2023-03-27benchtests: Move libmvec benchtest inputs to benchtests directoryJoe Ramsay52-0/+213200
This allows other targets to use the same inputs for their own libmvec microbenchmarks without having to duplicate them in their own subdirectory. Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
2023-03-08Benchtests: Remove simple_str(r)chrWilco Dijkstra2-31/+38
Instead of benchmarking slow byte oriented loops, include the optimized generic strchr and strrchr implementation. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_str(n)casecmpWilco Dijkstra2-37/+2
Remove the slow byte oriented loops. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_memcmpWilco Dijkstra1-31/+1
Remove the slow byte oriented simple_memcmp. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_strcspn/strpbrk/strsepWilco Dijkstra5-177/+4
Remove simple_strcspn/strpbrk/strsep which are significantly slower than the generic implementations. Also remove oldstrsep and oldstrtok since they are practically identical to the generic implementation. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove memchr_strnlenWilco Dijkstra2-11/+2
Remove memchr_strnlen since it is now the same as generic_strnlen. Adjust iteration count to reduce benchmark time. Keep memchr_strlen since the generic strlen does not use memchr. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_mem(r)chrWilco Dijkstra2-30/+26
Instead of benchmarking slow byte oriented loops, include the optimized generic memchr/memrchr implementation. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_strcpy_chkWilco Dijkstra2-27/+1
Remove the slow byte oriented simple_strcpy_chk and simple_stpcpy_chk. Adjust iteration count to increase benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-03-08Benchtests: Remove simple_str(n)cmpWilco Dijkstra2-74/+24
Instead of benchmarking slow byte oriented loops, include the optimized generic strcmp/strncmp implementation. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-02-06Replace rawmemchr (s, '\0') with strchrWilco Dijkstra2-2/+2
Almost all uses of rawmemchr find the end of a string. Since most targets use a generic implementation, replacing it with strchr is better since that is optimized by compilers into strlen (s) + s. Also fix the generic rawmemchr implementation to use a cast to unsigned char in the if statement. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2023-01-06Update copyright dates with scripts/update-copyrightsJoseph Myers101-101/+101
2022-11-08benchtests: Make str{n}{cat|cpy} benchmarks output jsonNoah Goldstein4-115/+297
Json output is easier to parse and most other benchmarks already do the same.
2022-11-08string: Add len=0 to {w}memcmp{eq} tests and benchtestsNoah Goldstein1-9/+9
len=0 is valid and fairly common so should be tested. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-11-01Disable use of -fsignaling-nans if compiler does not support itAdhemerval Zanella1-3/+3
Reviewed-by: Fangrui Song <maskray@google.com>
2022-10-19Bench: Improve benchtests for memchr, strchr, strnlen, strrchrNoah Goldstein5-45/+137
1. Add more complete coverage in the medium size range. 2. In strnlen remove the `1 << i` which was UB (`i` could go beyond 32/64)
2022-10-03Benchtests: Add bench for pthread_spin_{try}lock and mutex_trylockNoah Goldstein6-12/+151
Reuses infrastructure from previous pthread_mutex_lock benchmarks to test other performance sensitive functions.
2022-09-28Benchtest: Add additional benchmarks for strlen and strnlenNoah Goldstein2-7/+81
Current benchmarks are missing many cases in the mid-length range which is often the hottest size range.
2022-07-22benchtests: Add arc4random benchtestAdhemerval Zanella Netto5-3/+230
It shows both throughput (total bytes obtained in the test duration) and latecy for both arc4random and arc4random_buf with different sizes. Checked on x86_64-linux-gnu, aarch64-linux, and powerpc64le-linux-gnu.
2022-06-07Benchtests: Improve memrchr benchmarksNoah Goldstein1-45/+65
Add a second iteration for memrchr to set `pos` starting from the end of the buffer. Previously `pos` was only set relative to the beginning of the buffer. This isn't really useful for memrchr because the beginning of the search space is (buf + len). Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-06-01benchtests: Add workload name for sincosfAdhemerval Zanella1-0/+1
So it can show both reciprocal-throughput and latency. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-06-01benchtests: Add workload name for cosfAdhemerval Zanella1-1/+1
So it can show both reciprocal-throughput and latency. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-05-27benchtests: Improve benchtests for strstr, memmem, and memchrNoah Goldstein3-92/+283
1. Use json_ctx for output to help standardize format across all benchtests. 2. Add some additional tests to strstr and memchr expanding alignments and adding more small values. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-05-23benchtests: Improve bench-strnlen.cNoah Goldstein1-25/+52
1. Output results in json format so its easier to parse 2. Increase max alignment to `getpagesize () - 1` to make it possible to test page cross cases. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-05-23elf: Optimize _dl_new_hash in dl-new-hash.hNoah Goldstein1-1/+2
Unroll slightly and enforce good instruction scheduling. This improves performance on out-of-order machines. The unrolling allows for pipelined multiplies. As well, as an optional sysdep, reorder the operations and prevent reassosiation for better scheduling and higher ILP. This commit only adds the barrier for x86, although it should be either no change or a win for any architecture. Unrolling further started to induce slowdowns for sizes [0, 4] but can help the loop so if larger sizes are the target further unrolling can be beneficial. Results for _dl_new_hash Benchmarked on Tigerlake: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz Time as Geometric Mean of N=30 runs Geometric of all benchmark New / Old: 0.674 type, length, New Time, Old Time, New Time / Old Time fixed, 0, 2.865, 2.72, 1.053 fixed, 1, 3.567, 2.489, 1.433 fixed, 2, 2.577, 3.649, 0.706 fixed, 3, 3.644, 5.983, 0.609 fixed, 4, 4.211, 6.833, 0.616 fixed, 5, 4.741, 9.372, 0.506 fixed, 6, 5.415, 9.561, 0.566 fixed, 7, 6.649, 10.789, 0.616 fixed, 8, 8.081, 11.808, 0.684 fixed, 9, 8.427, 12.935, 0.651 fixed, 10, 8.673, 14.134, 0.614 fixed, 11, 10.69, 15.408, 0.694 fixed, 12, 10.789, 16.982, 0.635 fixed, 13, 12.169, 18.411, 0.661 fixed, 14, 12.659, 19.914, 0.636 fixed, 15, 13.526, 21.541, 0.628 fixed, 16, 14.211, 23.088, 0.616 fixed, 32, 29.412, 52.722, 0.558 fixed, 64, 65.41, 142.351, 0.459 fixed, 128, 138.505, 295.625, 0.469 fixed, 256, 291.707, 601.983, 0.485 random, 2, 12.698, 12.849, 0.988 random, 4, 16.065, 15.857, 1.013 random, 8, 19.564, 21.105, 0.927 random, 16, 23.919, 26.823, 0.892 random, 32, 31.987, 39.591, 0.808 random, 64, 49.282, 71.487, 0.689 random, 128, 82.23, 145.364, 0.566 random, 256, 152.209, 298.434, 0.51 Co-authored-by: Alexander Monakov <amonakov@ispras.ru> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-05-23benchtests: Add benchtests for dl_elf_hash, dl_new_hash and nss_hashNoah Goldstein7-8/+335
Benchtests are for throughput and include random / fixed size benchmarks. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-05-06benchtests: Add wcrtomb microbenchmarkSiddhesh Poyarekar2-0/+140
Add a simple benchmark that measures wcrtomb performance with various locales with 1-4 byte characters. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Florian Weimer <fweimer@redhat.com>
2022-04-29benchtests: Better libmvec integrationSiddhesh Poyarekar1-15/+17
Improve libmvec benchmark integration so that in future other architectures may be able to run their libmvec benchmarks as well. This now allows libmvec benchmarks to be run with `make BENCHSET=bench-math`. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-04-29benchtests: Add UNSUPPORTED benchmark statusSiddhesh Poyarekar1-5/+18
The libmvec benchmarks print a message indicating that a certain CPU feature is unsupported and exit prematurelyi, which breaks the JSON in bench.out. Handle this more elegantly in the bench makefile target by adding support for an UNSUPPORTED exit status (77) so that bench.out continues to have output for valid tests. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-04-27benchtests: Add pthread-mutex-locks benchWangyang Guo2-0/+290
Benchmark for testing pthread mutex locks performance with different threads and critical sections. The test configuration consists of 3 parts: 1. thread number 2. critical-section length 3. non-critical-section length Thread number starts from 1 and increased by 2x until num of CPU cores (nprocs). An additional over-saturation case (1.25 * nprocs) is also included. Critical-section is represented by a loop of shared do_filler(), length can be determined by the loop iters. Non-critical-section is similiar to the critical-section, except it's based on non-shared do_filler(). Currently, adaptive pthread_mutex lock is tested.
2022-04-22benchtests: Improve bench-strrchrNoah Goldstein1-44/+82
1. Use json-lib for printing results. 2. Expose all parameters (before pos, seek_char, and max_char where not printed). 3. Add benchmarks that test multiple occurence of seek_char in the string. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Use json-lib in bench-strncasecmp.cNoah Goldstein1-44/+69
Just QOL change to make parsing the output of the benchtests more consistent. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Use json-lib in bench-strcasecmp.cNoah Goldstein1-26/+51
Just QOL change to make parsing the output of the benchtests more consistent. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Use json-lib in bench-strspn.cNoah Goldstein1-20/+58
Just QOL change to make parsing the output of the benchtests more consistent. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Use json-lib in bench-strpbrk.cNoah Goldstein1-20/+61
Just QOL change to make parsing the output of the benchtests more consistent. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Add random benchmark in bench-strchr.cNoah Goldstein1-0/+143
Add benchmark that randomizes whether return should be NULL or pointer to CHAR. The rationale is on many architectures there is a choice between a predicate execution option (i.e cmovcc on x86) or a branch. On x86 the results for cmovcc vs branch are something along the lines of the following: perc-zero, Br On Result, Time Br / Time cmov 0.10, 1, ,0.983 0.10, 0, ,1.246 0.25, 1, ,1.035 0.25, 0, ,1.49 0.33, 1, ,1.016 0.33, 0, ,1.579 0.50, 1, ,1.228 0.50, 0, ,1.739 0.66, 1, ,1.039 0.66, 0, ,1.764 0.75, 1, ,0.996 0.75, 0, ,1.642 0.90, 1, ,1.071 0.90, 0, ,1.409 1.00, 1, ,0.937 1.00, 0, ,0.999 Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-25benchtests: Use json-lib in bench-strchr.cNoah Goldstein1-30/+64
Just QOL change to make parsing the output of the benchtests more consistent. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2022-03-16benchtests: Use "=" instead of ":=" [BZ #28970]H.J. Lu1-2/+4
Use "=" instead of ":=" to allow sysdeps Makefiles to add more benches to bench and benchset. This fixes BZ #28970. Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
2022-03-08benchtests: make compare_strings.py accept string as attribute valueSu Lifan1-1/+6
Commit ac759b1fbf28a82d99afde9046f8b72c7cba5dae added attribute "overlap" to bench-memmove-walk, whose value is a string. This change makes compare_strings.py fail since benchout_strings.schema.json requires the values of attributes to be number. This patch relaxes such constraint. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-02-25benchtests: Generate .d dependency files [BZ #28922]H.J. Lu1-2/+6
1. Add all .o files to extra-objs. 2. Include ../Rules after extra-objs has been set. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2022-02-25benchtests: Remove duplicated loop in bench-bzero-walk.cH.J. Lu1-6/+0
Remove one of 2 identical loops in bench-bzero-walk.c. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2022-02-24benchtests: Add small sizes (<= 64) to bench-bzero-walk.cH.J. Lu1-0/+3
Small sizes (<= 64) represent large portion of memset usages with zero value. Add sizes (<= 64) to bench-bzero-walk.c to cover small sizes. Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
2022-02-23benchtests: Add benches for memset with 0 valueH.J. Lu7-3/+149
memset with zero as the value to set is by far the majority value (99%+ for Python3 and GCC). Add bench-memset-zero-large.c, bench-memset-zero-walk.c and bench-memset-zero.c to measure memset implementations for zeroing. Reviewed-by: Sunil K Pandey <skpgkp2@gmail.com>
2022-02-08benchtests: Add benches for bzeroH.J. Lu4-0/+372
Add bench-bzero-large.c, bench-bzero-walk.c and bench-bzero.c.
2022-02-07benchtests: Sort benches in MakefileH.J. Lu1-19/+110
Put one bench per line and sort them.
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