`import librosa` slow to run at 48 seconds

Describe the bug

import librosa takes way too long, at 48 seconds.

To Reproduce

import librosa

# Start a stopwatch to time it.
# Stop the stopwatch when the Python prompt becomes responsive/available again.
# In my case, it takes 48 seconds.

Expected behavior Would expect it to go fast.

Software versions

Python 3.8.10 (default, Mar 15 2022, 12:22:08)
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

>>> import platform; print(platform.platform())
Linux-5.10.104-linuxkit-x86_64-with-glibc2.29

>>> import sys; print("Python", sys.version)
Python 3.8.10 (default, Mar 15 2022, 12:22:08)
[GCC 9.4.0]

>>> import numpy; print("NumPy", numpy.__version__)
NumPy 1.22.4

>>> import scipy; print("SciPy", scipy.__version__)
SciPy 1.8.1

>>> import librosa; print("librosa", librosa.__version__)
librosa 0.9.2

>>> librosa.show_versions()
INSTALLED VERSIONS
------------------
python: 3.8.10 (default, Mar 15 2022, 12:22:08)
[GCC 9.4.0]

librosa: 0.9.2

audioread: 2.1.9
numpy: 1.22.4
scipy: 1.8.1
sklearn: 1.1.1
joblib: 1.1.0
decorator: 5.1.1
soundfile: 0.10.3
resampy: 0.3.1
numba: 0.55.2
pooch: v1.6.0
packaging: 21.3

numpydoc: None
sphinx: None
sphinx_rtd_theme: None
sphinx_multiversion: None
sphinx_gallery: None
mir_eval: None
ipython: None
sphinxcontrib-svg2pdfconverter: None
pytest: None
pytest-mpl: None
pytest-cov: None
matplotlib: None
samplerate: None
soxr: None
contextlib2: None
presets: None

System:

• I’m running things inside of a Docker container running heroku/heroku:20 (based off Ubuntu 20).
  • If I run import librosa from the host computer running macOS the speed is normal.
  • The Mac is a 2021 MacBook Pro M1.

Additional context

What I’ve tried:

• Restarting my Docker container;
• Uninstalling / Reinstalling librosa

There’s no error message in the prompt. Where could I look for additional information? (Say logs, or how to run libsndfile or other from the command-line?)

[bmcfee]

This will be resolved with the 0.4 release of resampy next week, and requires no further action from the librosa side.

[fabswt]

Found the culprit: it’s indeed resampy.

• The 48-second import time is with resampy 0.3.1.
• Downgrading to 0.3.0 or 0.2.2 gave me import times of 5-7 seconds. Not great, but better.