High memory usage when using a lot of packages

[schmunk42]

The package list is from an educational project which tries to include as many Yii2 packages as possible, it might be useful for you as a benchmarking tool.

composer.json

All values with filled caches...

AP

[6694.7MB/310.05s] Dependency resolution completed in 126.371 seconds
[650.9MB/322.22s] Memory usage: 650.91MB (peak: 6698.12MB), time: 322.22s

fxpio/cap (for comparision)

[643.7MB/40.37s] Dependency resolution completed in 3.530 seconds
[377.3MB/33.04s] Memory usage: 377.26MB (peak: 648.26MB), time: 33.04s

[SilverFire]

Hm... I would like to think it's related to composer internals 😨

[schmunk42]

I first thought it would be related to optimize-with-installed-packages: false/true, in a way that fxpio/cap would be using far less dependencies to analyze than with AP.

But it did not change the time/memory needed with fxpio/cap. I am also pretty clueless why this is happening.

[hiqsol]

That's because of:

    "pattern-skip-version": "(-build|-patch)"

Some bower/npm packages have really huge number of build/patch releases.

I'm not sure if it's safe to remove these releases from asset-packagist completely.

[schmunk42]

@hiqsol Nice catch! Even without testing it, this should be the cause.

This is partially related to #67 - in case you start working on this you might consider an URL like https://asset-packagist.org/bower-releases to strip out the build & patch versions.

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