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Limit sharp's concurrency #53385

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merged 6 commits into from
Aug 11, 2023
Merged

Limit sharp's concurrency #53385

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e572e7c
limit sharp's concurrency
shuding Jul 31, 2023
b2ed03b
Update image-optimizer.ts
shuding Jul 31, 2023
72bc436
Update packages/next/src/server/image-optimizer.ts
shuding Jul 31, 2023
4adb7f3
Update packages/next/src/server/image-optimizer.ts
shuding Aug 11, 2023
56cf8d8
update comment
styfle Aug 11, 2023
acd977e
Merge branch 'canary' into shu/fv8u
styfle Aug 11, 2023
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16 changes: 10 additions & 6 deletions packages/next/src/server/image-optimizer.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import { createHash } from 'crypto'
import { promises } from 'fs'
import { cpus } from 'os'
import type { IncomingMessage, ServerResponse } from 'http'
import { mediaType } from 'next/dist/compiled/@hapi/accept'
import chalk from 'next/dist/compiled/chalk'
Expand Down Expand Up @@ -43,15 +44,18 @@ const VECTOR_TYPES = [SVG]
const BLUR_IMG_SIZE = 8 // should match `next-image-loader`
const BLUR_QUALITY = 70 // should match `next-image-loader`

let sharp:
| ((
input?: string | Buffer,
options?: import('sharp').SharpOptions
) => import('sharp').Sharp)
| undefined
let sharp: typeof import('sharp') | undefined

try {
sharp = require(process.env.NEXT_SHARP_PATH || 'sharp')
if (sharp) {
// This helps to reduce the memory usage of the dev server.
// https://sharp.pixelplumbing.com/api-utility#concurrency
if (sharp.concurrency() > 1) {
const divisor = process.env.NODE_ENV === 'development' ? 4 : 2
sharp.concurrency(Math.floor(Math.max(cpus().length / divisor, 1)))
}
}
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} catch (e) {
// Sharp not present on the server, Squoosh fallback will be used
}
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