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# Default value
JAVA_OPTIONS="-Xms128m -Xmx500m"

@rem Default value
set JAVA_OPTIONS=-Xms128m -Xmx500m

Explanation:

• JOC Cockpit can be operated from initially 128 MB heap size with -Xms128m.
• Heap size can grow up to the specified maximum -Xmx500m based on performance indicators such as
  • the number users working with JOC Cockpit,
  • the number of inventory items such as workflows, schedules etc.
• The above values should work for approx. 10 concurrent users.

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# No Default value

# Recommended: limit initial and max. heap size
JAVA_OPTIONS="-Xms500m -Xmx1g"

@rem No Default value

@rem Recommended: limit initial and max. heap size
set JAVA_OPTIONS=-Xms500m -Xmx1g

Explanation:

• The Controller can be operated from initially 500 MB heap size with -Xms500m.
• Heap size can grow up to the specified maximum -Xmx1g based on performance indicators such as
  • the number of workflows deployed to the Controller,
  • the max. failure time for which the Controller is not connected to JOC Cockpit.
• The above values should work for approx. 10 000 workflows with a max. failure time of 24 hours.

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# Default value
JAVA_OPTIONS="-Xms100m"

# Recommended: limit initial and max. heap size
JAVA_OPTIONS="-Xms100m -Xmx1g"

@rem Default value
set JAVA_OPTIONS=-Xms100m

@rem Recommended: limit initial and max. heap size
set JAVA_OPTIONS=-Xms100m -Xmx1g

Explanation:

• The Agent can be operated from initially 100 MB heap size with -Xms100m.
• By default no maximum heap size is assigned, i.e. the Agent will be assigned the heap size calculated by Java when starting the Java Virtual Machine.
• Heap size can grow up to the specified maximum -Xmx1g based on performance indicators such as
  • the number of workflows deployed to the Agent,
  • the number of parallel tasks executed with the Agent,
  • the max. failure time for which the Agent is not connected to a Controller.
• The above values should work for approx. 10 000 workflows with a max. failure time of 24 hours.

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# Default value
JAVA_OPTIONS="-Xss=4000kb"4000kb"

@rem Default value
set JAVA_OPTIONS=-Xss=4000kb

Explanation:

• If a StackOverflowError exception is raised then the stack in use is larger than the thread stack size and suggests to increase the thread stack size..
• if an OutOfMemoryError exception is raised then the stack is larger then the available memory and suggests to decrease the thread stack size.

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# Recommended: use G1 Garbage Collector
JAVA_OPTIONS="-XX:+UseG1GC"

@rem Recommended: use G1 Garbage Collector
set JAVA_OPTIONS=-XX:+UseG1GC

Explanation:

• It is recommended to activate the G1 Garbage Collector
• This applies to Java releases 1.8 to 11. For Java 17 the default Garbage Collector is G1.
• This option is applicable for JOC Cockpit, Controller and Agents.

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# Recommended: activate string deduplication
JAVA_OPTIONS="-XX:+UseStringDeduplication"

@rem Recommended: activate string deduplication
set JAVA_OPTIONS=-XX:+UseStringDeduplication

Explanation:

• String deduplication reduces memory consumption.
• This option is applicable for JOC Cockpit, Controller and Agents.

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# Recommended: specify non-blocking entropy pool if not specified by java.security file
JAVA_OPTIONS="-Djava.security.egd=file:///dev/urandom"

@rem Recommended: specify non-blocking entropy pool if not specified by java.security file
set JAVA_OPTIONS=-Djava.security.egd=file:///dev/urandom

NoteExplanation:

• Find further information from the following sources:
  • JS7 - Troubleshooting - Connection reset or Timeout reached (30s) for process
  • JS7 - Troubleshooting - Access to a Credential Store is slow

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