For newer elasticsearch versions... I guess v5.0 and above... I see that we have jvm.options file. In that file we have the JVM flag -XX:+AlwaysPreTouch set by default. As I understand, this flag tells the OS to map the memory pages to the java process at the time of process initialization versus a…

Swap vs -XX:+AlwaysPreTouch

abhijat October 12, 2017, 6:14pm 2

Does anyone from elasticsearch team know about this one? or should I be asking this on a different forum?

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Swap vs -XX:+AlwaysPreTouch

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