Diagnosing High Load Average on Linux with Zero CPU Usage: Uninterruptible Sleep (D-State)
Diagnose and resolve high Linux load averages with near-zero CPU usage caused by uninterruptible sleep (D-state) processes, I/O bottlenecks, and kernel locks.
/BlogZero-Cost CloudBrowse all engineering tutorials and benchmarks tagged with #Linux Architecture.
Diagnose and resolve high Linux load averages with near-zero CPU usage caused by uninterruptible sleep (D-state) processes, I/O bottlenecks, and kernel locks.
Tune ZFS on Linux for production web servers. Master ARC sizing, dedicated SLOG deployment, and dataset compression to eliminate latency and boost IOPS.
Mitigate volumetric DDoS attacks at wire-speed using eBPF and XDP on Linux. Drop malicious packets before sk_buff allocation with minimal CPU overhead.
Compare AlmaLinux 9, Debian 12, and Ubuntu 24.04 LTS for hosting in 2026. Discover kernel benchmarks, memory footprints, and enterprise hosting trade-offs.
Master Transparent Huge Pages (THP) on Linux. Discover why databases demand disabling THP while compute engines thrive, with benchmarks and production configs.
Compare Zram, Zswap, and Disk Swap architectures for Linux VPS. Discover kernel memory compression benchmarks, production sysctl configs, and sizing guides.
Master sysctl.conf tuning for 10Gbps+ Linux web servers. Eliminate packet drops, calculate BDP window sizes, and unlock line-rate throughput.
Compare Linux io_uring and epoll for extreme concurrency. Discover kernel ring buffer internals, real-world benchmarks, and drop-in sysctl tuning profiles.
Master Linux network namespaces and virtual Ethernet (veth) pairs. Trace kernel packet paths, eliminate latency bottlenecks, and debug container networking.
Master Linux memory reclamation tuning. Optimize vm.swappiness, vfs_cache_pressure, and watermarks to eliminate latency spikes and OOM stalls.