that&#x27;s a pretty awesome summary. to that i would add:<p>* `iftop` that allows me to quickly check which network streams are hogging the machine (this is a little like sar -n DEV 1 but much more detailed!)<p>* `tcpdump -c 100 -vv`- poor man&#x27;s alternative to iftop or systat if they&#x27;re not available locally<p>* tail those logfiles, with systemd it&#x27;s even easier with journald as all logfiles can be checked at once: `journalctl -xf -p notice | ccze -m ansi` (ccze colors the output, purely optional)<p>* probably more i am forgetting now<p>the great takeaways in the article for me are:<p>* pidstat: great to have an average, beats top for sure<p>* back to basics: hit dmesg, vmstat and iostat first, as you learned in the beginning! :)