PI28492;8.5.5: System garbage collection(gc) is getting called very frequently

Download Description

PI28492 resolves the following problem:

ERROR DESCRIPTION:
System garbage collection(gc) is getting called explicitly every 5 seconds, causing very high CPU.

LOCAL FIX:
Reduce maxpercent to less than 100, such as 99, then the frequency of the GC should go down.

PROBLEM SUMMARY

USERS AFFECTED:
All users of IBM WebSphere Application Server

PROBLEM DESCRIPTION:
Extensive calls to Garbage collection (gc) are causing high CPU usage.

RECOMMENDATION:
None

System garbage collection(gc) is called at short intervals which is causing high CPU usage

PROBLEM CONCLUSION:
To avoid frequent garbage collection(gc)calls we corrected the garbage collection calculation.

The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.4. Please refer to the Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980