Ninja Log Analyser

Reads a .ninja_log and ranks build time of objects.

.ninja_log is produced by the Ninja build system.

Features

• Ranks objects in decreasing build time
• Can show times in milliseconds or seconds

Requirements

• Python 3.6 or better

Quick Start

Let there be a .ninja_log in the current working directory with the following contents:

# ninja log v5
28339	37316	1568970682	a.o	21551924de56a0b0
21092	28683	1568970674	b.o	e5c447592b0f338f
10	1535	1568970647	libc.a	fec6486ac4c258a0

Run:

./ninja_log_analyser.py

# Similarly,
./ninja_log_analyser.py -i .ninja_log

Output:

8977ms a.o
7591ms b.o
1525ms libc.a

Development

You need to install Pipenv first.

Run ./bootstrap-dev to install requirements

Run pipenv run pytest to run all tests.