Simon Willison’s Weblog

When I was a performance consultant I'd show up to random companies who wanted me to fix their computer performance issues. If they trusted me with a login to their production servers, I could help them a lot quicker. To get that trust I knew which tools looked but didn't touch: Which were observability tools and which were experimental tools. "I'll start with observability tools only" is something I'd say at the start of every engagement.

— Brendan Gregg