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On small instances (e.g., m7g.large with 2 vCPUs and 8GB RAM), the memory-only formula (budget / 256MB) derived 24 max_workers, causing CPU starvation and cascading health check timeouts across all workers. DefaultMaxWorkers now takes min(budget/256MB, numCPU*4), with a floor of 1. On the m7g.large this caps at 8 workers instead of 24. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
DefaultMaxWorkers()previously only considered memory (budget / 256MB), which derived 24 workers on an m7g.large (2 vCPUs, 8GB RAM)DeadlineExceededtimeouts, worker crashes, and force-killsmin(budget/256MB, numCPU*4)with a floor of 1 — caps at 8 workers on m7g.large instead of 24Test plan
TestDefaultMaxWorkersupdated with table-driven tests covering memory-limited, CPU-limited, equal, floor, and large instance casescontrolplanetests pass🤖 Generated with Claude Code