A fix is available
APAR status
Closed as program error.
Error description
Memory usage increases at the HUB monitoring server each time a remote monitoring server reconnects to the HUB. Usually the memory increase is gradual over time and does not pose significant problem. However, if the reconnections occur too often then memory can become exhausted at the HUB and a crash can occur. RECREATE INSTRUCTIONS: - Start the HUB and many RTEMS - Cause the RTEMS to reconnect to the HUB repeatedly - Once you get enough reconnects and enough updates being sent to each RTEMS the crash may occur. This problem is difficult to recreate.
Local fix
Restart the HUB monitoring server.
Problem summary
Hub monitoring server may leak memory due to remote monitoring server reconnects. Certain reconnects from a remote monitoring server to the hub monitoring server can result in an abandoned data queue at the hub monitoring server. The suspect reconnects occur without a physical network issue. These abandoned queues will continue to collect data. They are periodically cleaned, but a large number of these queues holding a large amount of information can result in memory deficiencies and a possible crash at the hub monitoring server.
Problem conclusion
Code was updated to prevent data from being added to queues that had been abandoned. The fix for this APAR is contained in the following maintenance packages: | fix pack | 6.2.2-TIV-ITM-FP0009 | fix pack | 6.2.3-TIV-ITM-FP0002
Temporary fix
Recycling the hub monitoring server will release the abandoned queues and the storage owned by them. However, this condition is triggered by a remote monitoring server performing multiple reconnects to the hub monitoring server. Identifying and eliminating the cause of the reconnects by the remote monitoring server will prevent this problem.
Comments
APAR Information
APAR number
IV10851
Reported component name
TEMS
Reported component ID
5724C04MS
Reported release
622
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-11-16
Closed date
2012-03-15
Last modified date
2012-06-29
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
TEMS
Fixed component ID
5724C04MS
Applicable component levels
R622 PSY
UP
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Document Information
Modified date:
29 June 2012