Friday, May 1, 2026

How to Troubleshoot CPU,I/O,Memory,Network in Linux.

  • Debug high CPU → top, pidstat -u, strace
  • Debug high I/O → iotop, iostat
  • Debug memory leak → top, smem, pmap
  • Debug network → ss, tcpdump, curl -v
  • DNS issues → dig, /etc/resolv.conf
  • System slow → check: dmesg, journalctl, load average.
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