# Elasticsearch 7.5.1
**URL:** https://discuss.elastic.co/t/elasticsearch-7-5-1/215178
**Category:** Elasticsearch
**Created:** [January 15, 2020, 5:00pm UTC](https://discuss.elastic.co/t/elasticsearch-7-5-1/215178 "2020-01-15T17:00:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@akash.gund](https://discuss.elastic.co/u/akash.gund)
#### Post date: [January 15, 2020, 5:00pm UTC](https://discuss.elastic.co/t/elasticsearch-7-5-1/215178/1 "2020-01-15T17:00:44Z")
while moving from ES7.2.0 to ES 7.5.1 have observed that the following JVM options thatwere present in ES 7.2 are not present in 7.5.
# pre-touch memory pages used by the JVM during initialization
-XX:+AlwaysPreTouch
## basic
# explicitly set the stack size
-Xss1m
# set to headless, just in case
-Djava.awt.headless=true
# ensure UTF-8 encoding by default (e.g. filenames)
-Dfile.encoding=UTF-8
# use our provided JNA always versus the system one
-Djna.nosys=true
# turn off a JDK optimization that throws away stack traces for common
# exceptions because stack traces are important for debugging
-XX:-OmitStackTraceInFastThrow
# flags to configure Netty
-Dio.netty.noUnsafe=true
-Dio.netty.noKeySetOptimization=true
-Dio.netty.recycler.maxCapacityPerThread=0
# log4j 2
-Dlog4j.shutdownHookEnabled=false
-Dlog4j2.disable.jmx=true
WIll the options still be respected if they were to be added to the jvm options file??
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 12, 2020, 5:00pm UTC](https://discuss.elastic.co/t/elasticsearch-7-5-1/215178/2 "2020-02-12T17:00:48Z")
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