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Reduce default concurrency for musl thread over-subscription

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https://github.com/lovell/sharp-libvips/issues/229
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Lovell Fuller 2024-04-30 19:14:13 +01:00
parent 93c615d39f
commit da655a1859
2 changed files with 5 additions and 0 deletions
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2
docs/changelog.md
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@ -8,6 +8,8 @@ Requires libvips v8.15.2
* Remove experimental status from `pipelineColourspace`.
* Reduce default concurrency when musl thread over-subscription detected.
* TypeScript: add missing definitions for `OverlayOptions`.
[#4048](https://github.com/lovell/sharp/pull/4048)
[@ike-gg](https://github.com/ike-gg)

3
lib/utility.js
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@ -153,6 +153,9 @@ function concurrency (concurrency) {
if (detectLibc.familySync() === detectLibc.GLIBC && !sharp._isUsingJemalloc()) {
// Reduce default concurrency to 1 when using glibc memory allocator
sharp.concurrency(1);
} else if (detectLibc.familySync() === detectLibc.MUSL && sharp.concurrency() === 1024) {
// Reduce default concurrency when musl thread over-subscription detected
sharp.concurrency(require('node:os').availableParallelism());
}
/**