The effect of setting the -XX: + PerfDisableSharedMem JVM parameter to false

Question

The effect of setting the -XX: + PerfDisableSharedMem JVM parameter to false

I was passed this pause GC issue ; it suggests to set the -XX:+PerfDisableSharedMem

JVM flag to false

. My question is what happens when we set this flag to false

,

+3

java garbage-collection jvm

Eranda June 16 15 at 16:13

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1 answer

the8472 · Accepted Answer · 2015-06-16T16:25:59+0000

Then /tmp/hsperfdata*

it won't be written. Which, according to the discussions of hotspot-runtime-dev , will prevent some performance monitoring command line tools from automatically detecting running VMs automatically. They can still attach to the running process if the PID is explicitly specified.

The effect of setting the -XX: + PerfDisableSharedMem JVM parameter to false

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