glibc/benchtests/README, branch master

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 benchtests for dl_elf_hash, dl_new_hash and nss_hash

2022-05-23T15:38:40Z

Benchtests are for throughput and include random / fixed size benchmarks. Reviewed-by: Siddhesh Poyarekar

benchtests: Building benchmarks as static executables

2021-10-04T17:09:13Z

Building benchmarks as static executables: ========================================= To build benchmarks as static executables, on the build system, run: $ make STATIC-BENCHTESTS=yes bench-build You can copy benchmark executables to another machine and run them without copying the source nor build directories.

benchtests/README update.

2020-08-04T16:44:41Z

Improve documentation of the 'name' directive and the 'workload' mechanism. Reviewed-by: Carlos O'Donell

benchtests: Restore the clock_gettime option

2020-06-05T16:48:07Z

commit 7621e38bf3c58b2d0359545f1f2898017fd89d05 Author: Wilco Dijkstra Date: Tue Jan 29 17:43:45 2019 +0000 Add generic hp-timing support removed the clock_gettime option. Restore the clock_gettime option for some x86 CPUs on which value from RDTSC may not be incremented at a fixed rate. Reviewed-by: Carlos O'Donell

Add generic hp-timing support

2019-03-22T20:30:44Z

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.

x86: Support RDTSCP for benchtests

2018-10-24T09:19:34Z

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.

benchtests: Enable BENCHSET to run subset of tests

2017-11-28T14:27:46Z

This patch adds BENCHSET variable to benchtests/Makefile in order to provide the capability to run a list of subsets of benchmark tests, ie; make bench BENCHSET="bench-pthread bench-math malloc-thread" This helps users to benchmark specific glibc area ChangeLog: * benchtests/Makefile:Add BENCHSET to allow subsets of benchmarks to be run. * benchtests/README: Add documentation for: Running subsets of benchmarks. Signed-off-by: Victor Rodriguez Signed-off-by: Icarus Sparry Reviewed-By: Siddhesh Poyarekar

benchtests: Use argparse to parse arguments

2017-09-16T06:17:32Z

Make the script more usable by adding proper command line options along with a way to query the options. The script is capable of doing a bunch of things right now like choosing a base for comparison, choosing to generate graphs, etc. and they should be accessible via command line switches. * benchtests/scripts/compare_strings.py: Use argparse. * benchtests/README: Document existence of compare_strings.py.

Improve math benchmark infrastructure

2017-06-20T15:26:26Z

Improve support for math function benchmarking. This patch adds a feature that allows accurate benchmarking of traces extracted from real workloads. This is done by iterating over all samples rather than repeating each sample many times (which completely ignores branch prediction and cache effects). A trace can be added to existing math function inputs via "## name: workload-", followed by the trace. * benchtests/README: Describe workload feature. * benchtests/bench-skeleton.c (main): Add support for benchmarking traces from workloads.