alt Hacker NewsA "goodbye" post after only 3.5 years. Hard to relate.
In my world it's hard to imagine an impact after that short of a time. And in fact, reading the list of accomplishments ("interviewed by the Wall Street Journal") makes it clear it's a good PR piece.
I'm perfectly willing to believe he's fabulous, but this didn't move the needle for me.
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It didn't move the needle for you.
For other people, they're going to be thinking "some other company is going to get one of the most effective and impactful performance engineers on the planet".
Dude shipped flamegraphs (which he also created in 2011) for cloud GPU loads and persuaded internal stakeholders to release the code as open source.
The "interviewed by the WSJ" line is for managers. Reading between the lines, I'd say he did really well and, if he didn't do better, it's because the organisation didn't let him.
ive been at my company 16 years and still haven't had an impact, so... yeah.
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Clicking through his links to various posts about e.g. stack pointers or flame graphs, my takeaway is he's an outlier in productivity, and got a lot done in 3.5 years at a monstrously large organization.
I'm pretty envious of his capabilities, in 3.5 years I can ship a couple webapps, I would never personally get JVM compilation flags added.