Lbench is a simple Linux multithread benchmark tool.
Various aspects of CPU and OS performance are measured for 1-9 parallel threads.
Measure how well performance scales with multiple threads using multiple CPU processor cores.

Lbench can make the following measurements for 1 to 9 parallel threads:
Lbench has two other functions not related to benchmarking:
Conclusions: based on Intel Core i7 3.6 GHz with 4 processor cores and Linux kernel 5.3:
The user guide is available from the [help] button and goes into more detail about each benchmark and configurable parameters.

Example Output Using 4 Threads