Field Notice: FN74010 - Xsi-Events Memory Leak When a Channel is Created - Software Upgrade Recommended

Notice

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Products Affected

Defect Information

Problem Description

The Xtended Services Interface (Xsi-Events) application for Cisco BroadWorks Application Delivery Platform and Cisco BroadWorks Xtended Services Platform experiences a memory leak every time a channel is created. This causes the WebContainer to become unstable over time.

Background

The following applications are affected by this issue:

• Xsi-Events-23 and Xsi-Events-24, bundled with Cisco BroadWorks Application Delivery Platform releases Rel_2022.11_1.273 through Rel_2023.03_1.411
• Xsi-Events-XS-TAS, bundled with Cisco BroadWorks Xtended Services Platform releases Rel_2022.11_1.273 through Rel_2023.03_1.411
• Xsi-Events-25, bundled with Cisco BroadWorks Application Delivery Platform releases Rel_2022.08_1.350 through Rel_2023.03_1.411

Xsi-Events and other web applications deployed on the same server become unresponsive over time as the WebContainer runs out of memory.

Problem Symptom

The leak can be observed by looking at the garbage collector logs that are found in the TomcatOutput log files. After a full garbage collection, the amount of memory still referenced by the application can be observed.

When a leak is present, the amount of memory used after each collection grows slowly. The memory footprint does not decrease, even after a period of inactivity on the system.

In this example, the total memory footprint that was used after a full collection grew from 1242931K on March 1, to 13182588K on March 10, and to 23328820K on March 17.

2023-03-01T23:58:40.102-0700: [Full GC (Ergonomics) [PSYoungGen: 2736K->0K(72192K)] [ParOldGen: 1422498K->1242931K(1399808K)] 1425235K->1242931K(1472000K), [Metaspace: 107320K->107320K(110592K)], 2.1138236 secs] [Times: user=3.46 sys=0.56, real=2.11 secs]
2023-03-10T18:03:10.745-0700: [Full GC (Ergonomics) [PSYoungGen: 101196K->0K(5330944K)] [ParOldGen: 14251539K->13182588K(14484480K)] 14352736K->13182588K(19815424K), [Metaspace: 113759K->113
759K(116736K)], 24.4189853 secs] [Times: user=42.47 sys=5.70, real=24.42 secs]
2023-03-17T23:56:53.225-0700: [Full GC (Ergonomics) [PSYoungGen: 9718272K->959151K(10451456K)] [ParOldGen: 22369543K->22369668K(22369792K)] 32087815K->23328820K(32821248K), [Metaspace: 114416K->114416K(116736K)], 63.8265572 secs] [Times: user=106.54 sys=19.59, real=63.83 secs]

Workaround/Solution

The problem is fixed in Xsi-Events-23, Xsi-Events-24, and Xsi-Events-25 as standalone applications on Cisco BroadWorks Application Delivery Platform releases Rel_2023.04_1.290 and later.

The problem is also fixed in Xsi-Events-XS-TAS bundled with Cisco BroadWorks Xtended Services Platform releases Rel_2023.04_1.290 and later.

Use the following links to download and run the fixed releases of Cisco software:

• BroadWorks Xtended Services Platform XSP_Rel_2023.04_1.295
• BroadWorks Application Delivery Platform Xsi-Events-25_2023.04_1.295
• BroadWorks Application Delivery Platform Xsi-Events-24_2023.04_1.295
• BroadWorks Application Delivery Platform Xsi-Events-23_2023.04_1.295

Revision History

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

• Open a service request on Cisco.com
• By email or telephone

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