Use these custom properties for advanced configurations for core groups.
To configure a custom property, complete the following steps:
If the custom property is not in the list of defined custom properties, click New and then enter the name of the custom property in the Name field and an appropriate value in the Value field.
Use this custom property to eliminate a condition that is reported by a message that is displayed repeatedly in your SystemOut.log file.
[9/24/04 13:28:19:497 CDT] 00000013 VSync W DCSV2005W: DCS Stack DefaultAccessPointGroup.P at Member 172.16.1.86:9353: The amount of memory available for synchronization is low. The configured memory size is 418816 bytes. Currently used memory size is 420307 bytes.
If the member IP address is in the format of a dotted decimal IP address and port, you can eliminate these messages by increasing the amount of memory that is allocated to the core stack that is used for core group communication. Increase the value of this property until you no longer see the message in your SystemOut.log file. Because the memory is dynamically allocated, setting a larger stack size than you need does not cause memory problems.
See Core group bridge custom properties for more information about how to set the property at those levels.
Units | megabytes |
Default | 5 |
Use this custom property to adjust how frequently the core group IP cache is cleared.
The caching of name-to-IP address information at the core group level eliminates some of the system overhead required to assign IP addresses to core group members.
Units | seconds |
Default | 60 |
Acceptable values | Any positive integer. 1 is the minimum value that can be specified |
Use this custom property to change how frequently the high availability manager Discovery Protocol checks for new core group members. A new core group member is not able to communicate with other core group members until the Discovery Protocol establishes communication between the new member and the existing members.
Units | seconds |
Default | For Versions 6.0 and 6.0.1, the default is 15 seconds. For Version 6.0.2 and higher, the default is 30 seconds |
Use this custom property to change how frequently the Failure Detection Protocol checks the core group network connections that the discovery protocol establishes. The Failure Detection Protocol notifies the Discovery Protocol if a connection failure occurs.
Units | seconds |
Default | 6 |
Use this custom property to change the size of the socket buffer that the core group transport obtains.
Units | One of the following:
|
Default | 2 megabytes for all buffer types. |
Related tasks
Changing the number of core group coordinators