I cannot pass the stress tool to complete millions of transactions per second. Are there any problems with my execution?

[308twin]

Hello, dear developers and everyone,
I ran the stress test located at embedded/tools/stress_tool with the following commands:

go run stress_tool.go -mode auto

I checked the logs and found the following output:

All committers 10 have successfully completed their work within 1m11.382234379s!
Starting full scan to verify linear cryptographic linking...
All transactions 20000 successfully verified in 34.395090088s!

In other words, 10 committers each completed 1,000 transactions, and it took a total of one minute. This is very different from the millions of transactions per second I saw on git.

I would like to ask if there is something wrong with my testing method? If so, could you please give me the correct way to achieve millions of transactions per second?

The following is my test environment:
Debian system
Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
WDC WDS240G2G0B-00EPW0 (maximum read speed 545MB/s, maximum write speed 430MB/s)
16GB RAM