[XBEAN-203] Performance improvement by adding local cache for MultiParentClassLoader#loadClass

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.7
• Fix Version/s: 3.12
• Component/s: classloader
• Assignee: Guillaume Nodet
• Reporter: Gert Vanthienen
• Created: 26/Mar/12 12:38
• Updated: 07/Jun/12 12:57
• Resolved: 07/Jun/12 12:57

Description

While profiling for performance issues on ServiceMix, we noticed a lot of time was spent waiting for the object lock to access MultiParentClassLoader's loadClass() method, especially when using things like JAXP. We managed to get significant improvements by adding a local cache to avoid the synchronized method invocation for previously loaded classes.