https://github.com/cyring/crc32bench

CRC32 Benchmark for x86_64 processors
https://github.com/cyring/crc32bench

benchmark crc32 optimization

Last synced: 6 months ago
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CRC32 Benchmark for x86_64 processors

• Host: GitHub
• URL: https://github.com/cyring/crc32bench
• Owner: cyring
• License: gpl-2.0
• Created: 2017-11-23T15:02:34.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2022-07-28T20:35:33.000Z (about 3 years ago)
• Last Synced: 2025-03-25T11:49:23.404Z (7 months ago)
• Topics: benchmark, crc32, optimization
• Language: C
• Homepage:
• Size: 10.7 KB
• Stars: 3
• Watchers: 2
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# crc32bench

CRC32 Benchmark for x86_64 processors

##	- Prerequisities -

		C compiler: gcc or clang

		TASKSET: part of the util-linux package

##	- Compilation -

		cc -Wall -O0 crc32bench.c -o crc32bench

##	- Input -

		# ASM version

		taskset -c 1 ./crc32bench a GenuineIntel AuthenticAMD

		# C version

		taskset -c 1 ./crc32bench c GenuineIntel AuthenticAMD

##	- Results (gcc) -

		# ASM version

		Benchmark = 8882632044 cycles

		crc32bench(GenuineIntel,12) => 75a2ba39

		crc32bench(GenuineIntel,12) => 75a2ba39

		# C version (gcc)

		Benchmark = 31046108769 cycles

		crc32bench(GenuineIntel,12) => 75a2ba39

		crc32bench(AuthenticAMD,12) => 3485bbd3

		# C version (clang)

		Benchmark = 17586801852 cycles

		crc32bench(GenuineIntel,12) => 75a2ba39

		crc32bench(AuthenticAMD,12) => 3485bbd3