Tag: #성능

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• A Complete Guide to Linux Performance Tools: How to Read the Numbers in the Output

  Interprets the numbers printed by top, vmstat, iostat, pidstat, sar and perf one column at a time. Covers which tool answers which question, which values create optical illusions, and the order in which to choose a tool

  2026-08-15 · 18 min read #리눅스#성능#모니터링#운영#sysstat

• The complete Linux troubleshooting command guide: from the first 60 seconds to root cause

  The diagnostic commands to run, in order, from the moment someone tells you a server is misbehaving. uptime, top, free, df, iostat, ss, journalctl — which number in each output to read, and what that number rules out ver

  2026-08-15 · 19 min read #리눅스#트러블슈팅#운영#장애대응#명령어