Difference between revisions of "Heap Space Memory Management How to guide"
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This document outlines how to configure how much memory is used within Apache Tomcat. It may be useful when running multiple instances of Swivel. | This document outlines how to configure how much memory is used within Apache Tomcat. It may be useful when running multiple instances of Swivel. | ||
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Latest revision as of 07:52, 26 April 2021
Contents
Overview
NOTE: This article is only relevant to version 2 appliances. Please do not refer to it when trying to manage memory in later appliances. Please contact supportdesk@swivelsecure.com for further information
This document outlines how to configure how much memory is used within Apache Tomcat. It may be useful when running multiple instances of Swivel.
Prerequisites
Swivel 3.x
Apache Tomcat
PINsafe Appliance
Login to the Command line through the CMI and verify the memory being used with the command top
The heap space value should be set already, but you can verify and if necessary set the values, see WinSCP How To Guide.
To increase the Heap Space of a Swivel appliance you need to edit catalina.sh in the /usr/local/apache-tomcat-5.5.20/bin folder Add the line at the start of the file after the comments
JAVA_OPTS="$JAVA_OPTS "-Xmx192m
You should be able to keep adding heap. We have tested over half a Gb of heap (-Xmx512m)
Additional Commands
Memory Usuage
cat /proc/meminfo
Freeing up Memory Cache
frees up page cache, dentries and inodes:
sh -c "sync; echo 3 > /proc/sys/vm/drop_caches"
