bytedeco/javacpp

Loading native libraries on Windows 10 takes a long time

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#452 opened on Jan 31, 2021

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Description

I am using javacpp/ffmpeg on Windows 10 (2004) and found that loading the native libraries takes longer for Javacpp version 1.5.4 in comparison to 1.5.3. On 1.5.4 it takes roughly 7 seconds to load the libraries, which is in contrast to the 1.5 seconds version 1.5.3 takes.

In the gist below you find timestamped logs of the native libraries being loaded. Without having looked at the loader sources I am surprised to find that more time is spent in loading api-ms-win-crt-*

https://gist.github.com/edwinRNDR/676ea1a75548b31edc07cd699010f75e

Contributor guide

Research direction
Profile the library loading process on Windows using tools like Process Monitor to compare the time spent in each DLL loading step between versions 1.5.3 and 1.5.4. Investigate changes in the loading logic or dependencies that could cause the delay.
Tech stack
java
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaWindows
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40