Lbench

Lbench is a simple Linux multithread benchmark tool.
Various aspects of CPU and OS performance are measured for 1-64 parallel threads.
Lbench measures how performance scales with multiple threads and multiple CPU processor cores.

Lbench can make the following measurements for 1 to 64 parallel threads:
Lbench has two other functions not related to benchmarking:
The user guide is available from the [help] button and goes into more detail about each
benchmark and configurable parameters.

Results using Intel Core i5 12600K @4.0 GHz, 4 processor cores, Linux kernel 5.15:

Example Output Using 4 Threads