Beyond Compare is an amazing diff too, which blows any of the open source diff tools (diff, meld, diffuse, etc) out of the water. There needs to be a GUI (vs unified diff) oriented diffing tool for developers.
If you don't want to watch the video, the good content is on his blog:
http://www.brendangregg.com/blog/2017-05-09/cpu-utilization-is-wrong.ht…
and
http://www.brendangregg.com/blog/2018-02-09/kpti-kaiser-meltdown-perfor…
Beyond Compare is an amazing diff too, which blows any of the open source diff tools (diff, meld, diffuse, etc) out of the water. There needs to be a GUI (vs unified diff) oriented diffing tool for developers.