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Kernel Upgrade

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58 Tech

May 24, 2019 · Operations

Investigation of Slab‑Lock Issues and CPU Power Management on Linux Servers

The article analyzes write latency caused by a slab lock in the monitoring agent, evaluates kernel upgrades and BIOS power‑saving settings, and explains CPU power‑state mechanisms (P‑States, C‑States, T‑States) with performance testing scripts to guide server performance tuning.

BIOS SettingsCPU Power ManagementKernel Upgrade

0 likes · 10 min read

Investigation of Slab‑Lock Issues and CPU Power Management on Linux Servers

Qunar Tech Salon

Aug 6, 2015 · Operations

Proper Server Reboot Practices: Lessons from a Kernel Upgrade Incident

After a painful P1 incident caused by a kernel upgrade, this article outlines how to properly reboot a Linux server by documenting pre‑restart state, verifying post‑restart consistency with process and port snapshots, and using simple commands such as ps, netstat, diff, and last to ensure service continuity.

Kernel UpgradeLinuxSystem Administration

0 likes · 5 min read

Proper Server Reboot Practices: Lessons from a Kernel Upgrade Incident