Cognitive Technology Team
Apr 14, 2025 · Operations
TCP Out‑of‑Memory on AWS EC2: Diagnosis and Kernel Parameter Tuning
An AWS EC2 instance behind an Elastic Load Balancer became unresponsive due to repeated TCP out‑of‑memory errors, which were resolved by examining kernel messages, adjusting tcp_mem‑related kernel parameters, and rebooting the server after a long uptime.
AWSEC2TCP
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