Knowledge Base >> Increase Ignite Memory (PI 7.0+)

Increase Ignite Memory (PI 7.0+) - Confio Article 1547

Confio Article: 1547 Published: May 07 2009 2:04 AM
Version: >=7.0.20 Topic(s): Install and Setup Ignite Management
Product(s): Ignite
Database(s): All

Increase Ignite Java Heap Memory

If monitoring a large number of instances, it may be necessary to increase the amount of heap memory that is allocated to Ignite.  By default, Ignite will take a minimum of 128MB but is allowed to grow to 512MB. 

 

Note: if you are seeing either of the following errors in the Ignite log, then heap memory is not the issue, and you should follow the instructions in http://support.confio.com/kb/1543

Error: No buffer space available

 or

java.lang.OutOfMemoryError: unable to create new native thread

 

 

To determine what the Ignite heap memory setting should be for your Ignite PI Server, refer to the following article:

 

Windows Instructions (for Ignite PI Server running as a Windows service)

1. Edit the file iwc\tomcat\ignite_config\idc\server.properties
 

2a. Ignite 8.2 and above: Update the maximum heap setting (the default is 512, which means 512MB):


windows.service.java.max.heap.size=<new value>

  • For 32-bit and 64-bit JRE's, the value is specified in decimal without the units.  For example:
    • Set it to 1024 to increase the maximum to 1GB (this is safe for 32-bit JRE's)
    • Set it to 2048 to increase the maximum to 2GB (only go above 1228 with 64-bit JRE's

2b. Ignite 8.1 and below: Update the maximum heap setting (the default is "0x0200", which is in hexadecimal and means 512MB):

windows.service.java.max.heap.size.in.hex=<new value>
  
  • For 32-bit JRE's (which is the default), the value is specified in hexadecimal.  For example:
    • Set it to 0x300 to increase the maximum to 756MB. 
    • Set it to 0x400 to increase the maximum to 1GB.
       
  • For 64-bit JRE's, the value is specified in decimal without the units.  This may seem odd given that the property name says "in.hex", but a decimal value is needed in this case.  For example:
    • Set it to 1024 to increase the maximum to 1GB.
    • Set it to 2048 to increase the maximum to 2GB.
       

3. Recreate the Ignite PI Server service by running 2 batch files that were installed with Ignite PI:

  • removeWindowsService.bat
  • createWindowsService.bat 

 

Unix/Linux + Windows Instructions (for Ignite PI Server run from a command line)

  1. Edit the file iwc\tomcat\ignite_config\idc\server.properties
     
  2. Update the following setting (the default is "512m" which means 512MB):
java.max.heap.size=<new value>
  • Set it to 756m to increase the maximum to 756MB. 
  • Set it to 1024m to increase the maximum to 1GB.

 

  1. Restart the Ignite PI Server by running 2 scripts that were installed with Ignite PI:
  • shutdown (.bat for Windows, .sh for Unix/Linux)
  • startup (.bat for Windows, .sh for Unix/Linux)

 

Tags: ignite maximum memory 512 megabyte gigabyte outofmemoryerror max increase heap