Unexpected high peak memory usage when using remote urls in a playlist

[5chulzi]

Describe the bug
Using remote urls in a playlist seems to cause a short high memory usage when a file is being (down-) loaded. A file of size 300 MB causes Liquidsoap to consume around 1 GiB of memory for a short period. Only after some time it drops down to around 100 MiB and slowly rising up to approximately the size of the file (which is expected). For a file of size 60 MB it rises up to around 500 MiB of memory usage.

When the files are read from a local disk instead, the high peak does not occur.

To Reproduce
This is the config being used:

log.stdout.set(true)
settings.log.level.set(4)
settings.server.telnet.set(true)

s = playlist("/app/playlist.txt", mode="normal", reload_mode="watch")
s = fallback(track_sensitive=false, [s, blank()])


output.icecast(
  %ffmpeg(format="mp3", %audio(codec="libmp3lame", b="128k", samplerate=44100)),
  fallible=true,
  mount="/path/to/mount",
  host="localhost", port=9090, password="source", name="source", url="localhost",
  s)

Playlist:

annotate:title="Title 1",artist="Artist 1":/app/music/localfile.mp3
annotate:title="Title 1",artist="Artist 1":https://origin/some/remote/file.mp3

Expected behavior
Expecting the same behavior that occurs when using local files.

Version details

• OS: Docker
• Version 2.1.3

Install method
Using docker-compose and docker image from https://hub.docker.com/r/savonet/liquidsoap.

[toots]

Fixed in 1cb591b and v2.1.4 thanks!!!