https://toorun.dev/tags/tuning/Recent content in tuning on toorun.devHugo -- gohugo.ioen-usMon, 20 Jul 2026 09:00:00 +0000https://toorun.dev/posts/linux-process-prioritization-nice-renice-chrt-ionice/Mon, 20 Jul 2026 09:00:00 +0000https://toorun.dev/posts/linux-process-prioritization-nice-renice-chrt-ionice/Linux Process Prioritization (Short Practical Guide) When a system is busy, process priority helps decide what gets CPU and I/O time first. 1) CPU priority with nice nice sets a process niceness from -20 (highest priority) to 19 (lowest priority). Start a low-priority background job: nice -n 10 tar -czf backup.tar.gz /data Start a higher-priority job (usually requires root for negative values): sudo nice -n -5 ./latency_sensitive_app Check NI (niceness) and PRI: