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- If you increase the initial heap space (-Xms) for all jobs you could run into memory troubles if you are running to much Java tasks at one time.
- In most cases it is sufficient to apply just a maximum Java heap space with -Xmx.
You should descrease the Java heap space if the JVM crashes with this dump
| Code Block | ||
|---|---|---|
| ||
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 32744 bytes for ChunkPool::allocate
# Possible reasons:
# The system is out of physical RAM or swap space
# In 32 bit mode, the process size limit was hit
# Possible solutions:
# Reduce memory load on the system
# Increase physical memory or swap space
# Check if swap backing store is full
# Use 64 bit Java on a 64 bit OS
# Decrease Java heap size (-Xmx/-Xms)
# Decrease number of Java threads
# Decrease Java thread stack sizes (-Xss)
# Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
# Out of Memory Error (allocation.cpp:273), pid=5092, tid=6740
#
# JRE version: Java(TM) SE Runtime Environment (8.0_45-b14) (build 1.8.0_45-b14)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.45-b02 mixed mode windows-amd64 compressed oops)
# Core dump written. Default location: C:\ProgramData\sos-berlin.com\jobscheduler\extsrvsdl01vprd_4444\hs_err_pid5092.mdmp
#
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Increment/Decrement for only one job using Java
If you want to increase the heap space for only one job you can do this by the job configuration, see http://www.sos-berlin.com/doc/en/scheduler.doc/xml/job.xml#attribute_java_options
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<job java_options = "-Xmx512m"/> |
Increment/Decrement for all jobs using Java
You can increase the maximum Java heap space (set by the JobScheduler when starting the JVM) within the configuration file sos.ini, for example:
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| Code Block |
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[java] options = -Xms128 -Xmx512m |
See also
- Please consider the different strategies of Java heap space usage covered in the article How to manage the Java heap space
- For possible JVM options please see the Java documention
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