Posted inLinux
Custom Linux Kernels: Stripping the Bloat for Speed and Security
Compiling a custom Linux kernel allows you to strip away unnecessary drivers and optimize for specific CPU architectures, leading to a faster, more secure server.
Posted inLinux
Why Is My Linux Load Average High Despite Low CPU Usage?
Is your Linux server lagging despite low CPU usage? Learn how to diagnose high load averages caused by I/O wait, disk saturation, and processes stuck in uninterruptible sleep.
Posted inLinux
Linux CPU Pinning: How to Squeeze Every Drop of Performance from Your Hardware
Master Linux CPU resource management. Learn how to use taskset, numactl, and cpusets to eliminate context switching and optimize your high-performance applications.
Posted inLinux
Linux Ftrace: Diagnosing Kernel Latency Without the Strace Overhead
Master Ftrace, the Linux kernel's built-in tracer, to solve production latency. Learn function graphing, PID filtering, and how to interpret microsecond-level bottlenecks with minimal overhead.
Posted inDatabase
PostgreSQL WAL: Production Lessons on Performance and Recovery
PostgreSQL WAL is more than just a log; it's the key to performance and data safety. Explore production-tested configurations, PITR setups, and monitoring tips.
Posted inNetworking
SR-IOV on Linux: Slashing Latency and Reclaiming CPU for Virtual Workloads
Tired of network latency in your VMs? Learn how to configure SR-IOV on Linux to bypass the kernel, reduce CPU overhead, and achieve near-native networking speeds.
Posted inLinux
Linux SSD & NVMe Tuning: How I Cut I/O Latency and Extended Drive Life
Boost your Linux storage performance. Learn the exact fstab flags, udev rules, and TRIM strategies I use to optimize SSD and NVMe drives for speed and longevity.
Posted inLinux
Mastering bpftrace: Solving Linux Performance Mysteries with One-Liners
Ditch the guesswork. Learn how to use bpftrace one-liners to troubleshoot Linux kernel performance, disk latency, and network issues with minimal overhead.
Posted inLinux
Stop the Linux OOM Killer from Crashing Your Production Apps
Is the OOM Killer terminating your critical Linux processes? Learn how to diagnose logs, adjust process priorities, and tune kernel memory settings to keep your server stable.
Posted inLinux
Linux I/O Scheduling: Solving Disk Bottlenecks in Databases and File Servers
Is your server lagging during backups? Learn how to master Linux I/O scheduling and use ionice to prioritize database traffic over background tasks.