7a760cae99
* minimize inconsistent/invisible whitespace - consistent indentation (either spaces-only, tabs, *or* tabs with following spaces [for indentation]) - no internal/invisible tabs - no trailing whitespace - EOF EOLNs
1.5 KiB
Benchmarking to measure performance
To compare the performance of the uutils version of head with the
GNU version of head, you can use a benchmarking tool like
hyperfine. On Ubuntu 18.04 or later, you can install hyperfine by
running
sudo apt-get install hyperfine
Next, build the head binary under the release profile:
cargo build --release -p uu_head
Now, get a text file to test head on. I used the Complete Works of
William Shakespeare, which is in the public domain in the United States
and most other parts of the world.
wget -O shakespeare.txt https://www.gutenberg.org/files/100/100-0.txt
This particular file has about 170,000 lines, each of which is no longer than 96 characters:
$ wc -lL shakespeare.txt
170592 96 shakespeare.txt
You could use files of different shapes and sizes to test the
performance of head in different situations. For a larger file, you
could download a database dump of Wikidata or some related files
that the Wikimedia project provides. For example, this file
contains about 130 million lines.
Finally, you can compare the performance of the two versions of head
by running, for example,
hyperfine \
"head -n 100000 shakespeare.txt" \
"target/release/head -n 100000 shakespeare.txt"