I love atop - and install it everywhere that I can. The in depth metrics + historical view is excellent.
That being said, I wouldn't call it a one stop tool for performance analysis. Particularly due to the word 'analysis' - it tells you what resource was used, and what was using it. It doesn't tell you anything about /why/ the process was using it. It doesn't help with hunting down regressions. It doesn't give you insight in to what these processes are actually doing.
For that, you need to utilize strace/ltrace/ftrace/dtrace/ktap/systemtap/perf/sysdig/whatever
(If interested in the actual analysis/engineering side of performance, I recommend following Bredan Gregg's blog and buying his systems performance book - http://brendangregg.com/ )
That being said, I wouldn't call it a one stop tool for performance analysis. Particularly due to the word 'analysis' - it tells you what resource was used, and what was using it. It doesn't tell you anything about /why/ the process was using it. It doesn't help with hunting down regressions. It doesn't give you insight in to what these processes are actually doing.
For that, you need to utilize strace/ltrace/ftrace/dtrace/ktap/systemtap/perf/sysdig/whatever
(If interested in the actual analysis/engineering side of performance, I recommend following Bredan Gregg's blog and buying his systems performance book - http://brendangregg.com/ )