I want to compare the performance of two different implementations (Python and Java) of the same algorithm. I run scripts on the terminal (using Ubuntu 18) like this:
time script_name
I'm not sure how accurate this is. Is it possible to increase the accuracy of this benchmark? Perhaps there is a way to remove any restrictions or set-up in Python or Java?
As explained in this answer, the correct way to benchmark a program using time is the following command:
sudo chrt -f 99 /usr/bin/time --verbose <benchmark>. However, note that this will only be accurate if the algorithm takes at least a second to execute, as otherwise the exec call might take up a big part of the benchmark.
This answer suggests using perf stat instead, as such:
perf stat -r 10 -d <your app and arguments>.