Github user sitalkedia commented on the issue:
    @gatorsmile - We do have Linux Perf/flamegraph support for gathering CPU 
stats for our Spark jobs. On a per job basis, we run Perf/Jstack periodically 
and aggregate the result which is displayed as a flamegraph. Please read to know more 
about linux Perf and flamegraph integration. This gives us a aggregated view of 
time spent on a particular function across executors running on hundreds of 
nodes. This enables us to find hot spots in the code which is super critical 
for perf improvements. 

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