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PostgreSQL and the OOM killer: Why we use strict memory overcommit

In this blog post, we will explain how strict memory overcommit protects your database from catastrophic OOM (out of memory) kills. We will also share how a one character kernel bug forced us to temporarily disable this setting. Finally, we will explain our heuristic for determining the right memory overcommit limit…
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Databases & DataSystems & Performance2026

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Jul 3, 2026PostgreSQL and the OOM killer: Why we use strict memory overcommit by furkansahin194134

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