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perf: limit workspace project concurrency to available cores (#6869)
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packages/vitest/src/node/workspace/resolveWorkspace.ts
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packages/vitest/src/node/workspace/resolveWorkspace.ts
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import type { UserConfig, UserWorkspaceConfig, WorkspaceProjectConfiguration } from '../types/config'
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import type { WorkspaceProject } from '../workspace'
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import { existsSync, promises as fs } from 'node:fs'
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import os from 'node:os'
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import { limitConcurrency } from '@vitest/runner/utils'
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import fg from 'fast-glob'
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import { relative, resolve } from 'pathe'
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const projectPromises: Promise<WorkspaceProject>[] = []
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const fileProjects = [...configFiles, ...nonConfigDirectories]
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const concurrent = limitConcurrency(5)
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const concurrent = limitConcurrency(os.availableParallelism?.() || os.cpus().length || 5)
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for (const filepath of fileProjects) {
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// if file leads to the root config, then we can just reuse it because we already initialized it