I let GPT-4 walk me through troubleshooting steps with my extremely slow read times on my SSD-backed KVM virtual machine. It told me the things it needed, I pasted relevant logs and other output, and finally I solved my issue. I was highly impressed! It parsed atop, top, and various other content, explaining exactly what everything meant.
Another benefit was that it was able to present a much more readable version of some of what I pasted. I may have to start using it for cleaning up hard-to-read output (looking at you, atop!) in the future, it really excels at that!
Also, the issue ended up being that I that I was reading from what turned out to be an NFS mount. Doh!