glibc/benchtests/Makefile, branch master

Benchtests: Remove broken walk benchmarks

2024-06-21T13:41:42Z

The walk benchmarks don't measure anything useful - memory is not initialized properly so doing a single walk in 32MB just measures reading the 4KB zero page for reads and clear_page overhead for writes. The memset variants don't even manage to do a walk in the 32MB region due to using incorrect pointer increments... Neither is it clear why it is walking backwards since this won't confuse modern prefetchers. If you fix the benchmark and print the bandwidth, the results are identical for all sizes larger than ~1KB since it is just testing memory bandwidth of a single 32MB block. This case is already tested by the large benchmark, so overall it doesn't seem useful to keep these. Reviewed-by: Carlos O'Donell

benchtests: Add fclose benchmark

2024-05-16T15:12:59Z

Measure duration of 100 fclose calls after opening 1 million FILEs. Signed-off-by: H.J. Lu Reviewed-by: Carlos O'Donell

benchtests: Add random() benchmark

2024-04-18T13:30:21Z

Add a simple benchmark to measure the overhead of internal libc locks in the random() implementation on both single- and multi-threaded cases. This relies on the implementation of random using internal locks to access shared global data, and that the runtime uses multi-threaded locking once a thread has been created (even after it finishes). Reviewed-by: Adhemerval Zanella

benchtests: Add more benchtests for rounding functions.

2024-02-23T11:50:00Z

This patch adds more benchtests for rounding functions. The double inputs are copied from trunc-inputs, the float inputs are copied from truncf-inputs. and the rintf is copied from rint-inputs. Reviewed-by: Adhemerval Zanella

Update copyright dates with scripts/update-copyrights

2024-01-01T18:53:40Z

benchtests: Reformat Makefile.

2023-05-18T17:11:48Z

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.

benchtests: Add fmodf benchmark

2023-04-03T19:13:55Z

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

benchtests: Add fmod benchmark

2023-04-03T19:13:55Z

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

Update copyright dates with scripts/update-copyrights

2023-01-06T21:14:39Z

Disable use of -fsignaling-nans if compiler does not support it

2022-11-01T12:46:08Z

Reviewed-by: Fangrui Song