Hi all,
I try to profile my spark executors performance when use on Heap
persistent level in compare to use off-Heap persistent level. I use
statsd-jvm-profiler to profile each executor.
From the results i see that application spends 71,92% of its threads
running the method sun.nio.ch.EPollArrayWrapper.epollWait(). This
happens to all benchmarks execution. (Matrix Factorization, Linear
Regression, etc)
Can anyone explain me why this happens ?
Thanks for your help,
--Iacovos Kolokasis
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