[CAMEL-8994] Large memory use on Large core count(512) servers

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Affects Version/s: 2.14.3
• Fix Version/s: 2.15.3, 2.16.0, 2.14.4
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Zoltan Farkas
• Created: 21/Jul/15 15:48
• Updated: 23/Jul/15 17:21
• Resolved: 22/Jul/15 08:08

Description

ConcurrentLinkedHashmap get huge on these servers (200 +Mb)

There are some CPU related defaults + Some padding that are the source of this, more discussion at:

https://github.com/ben-manes/concurrentlinkedhashmap/issues/43

upgrading to a newer version should remove the padding and reduce memory usage...

Another thing I noticed that is related, is that LRUCache
default initial size is equal with maximum size... which is 1000, would it make more sense to have a lower default for initialSize? (64)

Issue Links

• relates to: CAMEL-8602 Java 8: ConcurrentLinkedHashMap -> Caffeine