I noticed also the full GC messages with a connector, it can be JVM related. Tried to increase the heap size for the connector but the connector still has Full GC ( ergonomics ) messages almost every minute. The Connector works fine however, so maybe arcmc should not mention this behaviour as a warning.
6/28/2013 · GC ergonomics is trying to increase the throughput by growing the heap (so says the attempted to grow). The last line Tenuring threshold: (attempted to decrease to balance GC costs) = 1. says that the ergonomics is trying to balance the GC times between young GC ‘s and full GC ‘s by decreasing the tenuring threshold.
Unhealthy JVM = a Full GC once every 5 to 10 minutes or less •All processing stops during a Full GC , so if a Full GC occurs every 5 minutes, ArcSight ESM is.
[ Full GC ( Ergonomics ) 2632447K->1086729K(3298304K), 2.3360398 secs] So it looks very strange for me that full GC is triggered. My understanding is that because GET requests don’t add any long-living data it should be just Minor GC when new generation is full . So I don’t understand, Arcsight event format • Normalized events are categorized and processed in many ways useful for correlation and asset modeling • Events are batched, filtered or aggregated as required for efficiency … Full GC ), reclaims memory in all of the Heap space, takes much longer …
The following changes take effect with J2SE 5.0. Garbage Collector of Server VM Changed to Parallel Garbage Collector . On server-class machines running the server VM, the garbage collector ( GC ) has changed from the previous serial collector (-XX:+UseSerialGC) to a parallel collector (-XX:+UseParallelGC).You can override this default by using the -XX:+UseSerialGC command-line.
Based on this information we could conclude that after 12 Minor GC runs two Full GC runs were performed, spanning 50ms in total. You would get the same confirmation via GUI-based tools, such as the jconsole or jvisualvm. Before nodding to this conclusion, lets look at to the output of the garbage collection logs gathered from the same JVM launch.
Full GC – Flag indicating that the event is Full GC event cleaning both the Young and Old generations. Ergonomics – Reason for the GC taking place. This indicates that the JVM internal ergonomics decided this is the right time to collect some garbage. [PSYoungGen: 1305132K->0K …
Ergonomics is the process by which the Java Virtual Machine (JVM) and garbage collection tuning, such as behavior-based tuning, improve application performance. The JVM provides platform-dependent default selections for the garbage collector , heap size, and runtime compiler. These selections match the needs of different types of applications while requiring less command-line tuning.
Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | … Full GCs>… [ Full GC ( Ergonomics ) [PSYoungGen: 12799K->12799K(14848K)] [ParOldGen …
