Tagged articles

Linux Memory

2 articles · Page 1 of 1

Aug 5, 2017 · Operations

Why Did My Tomcat Crash at 750 TPS? Uncovering the OOM Killer Mystery

A detailed case study reveals how an out‑of‑memory (OOM) situation on a Linux server caused Tomcat to crash during load testing, explains the kernel's OOM killer behavior, and provides practical solutions such as enabling swap and tuning Apache limits.

Linux MemoryLoad TestingOOM killer

0 likes · 6 min read

Why Did My Tomcat Crash at 750 TPS? Uncovering the OOM Killer Mystery

Efficient Ops

Jul 3, 2016 · Operations

Memory Myths, Subnet Mask Mistakes, and Telnet Tricks: Ops Lessons

This article shares real‑world ops stories about a disputed memory upgrade, explains how Linux calculates usable memory, clarifies common subnet‑mask misunderstandings, and demonstrates why Telnet cannot test UDP ports, highlighting practical troubleshooting lessons for system administrators.

Linux MemoryOperationsSystem Performance

0 likes · 12 min read

Memory Myths, Subnet Mask Mistakes, and Telnet Tricks: Ops Lessons