OSBench
This is a collection of benchmarks that aim to measure the performance of operating system primitives, such as process and thread creation.
Building
To build the benchmarks you need a C compiler, meson and ninja.
mkdir out
cd out
meson --buildtype=release ../src
ninjaMicro benchmarks
All benchmarks run their work for five seconds, and the fastest pass is reported.
create_threads
Create 100 threads and wait for them to finish. Each thread does nothing (just return).
- POSIX:
pthread_create(),pthread_join() - WIN32:
_beginthreadex(),WaitForSingleObject(),CloseHandle()
create_processes
Create 100 processes and wait for them to finish. Each process does nothing (just exit).
- Unix:
fork(),waitpid() - WIN32: Not implemented (Windows lacks the corresponding functionality).
launch_programs
Launch 100 programs and wait for them to finish. Each program does nothing (just exit).
- Unix:
fork(),execlp(),waitpid() - WIN32:
CreateProcess(),WaitForSingleObject(),CloseHandle()
create_files
Create 65,534 files, write 32 byts of data to each file, and then delete them.
fopen(),fwrite(),fclose(),remove()
NOTE: To measure filesystem/kernel performance rather than storage medium performance, consider using a RAM disk.
mem_alloc
Allocate 1,000,000 small chunks of memory, and then free them. Each chunk is 4-128 bytes in size.
malloc(),free()