[IGNITE-5796] Improve cache memory metrics calculation and activation

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0
• Component/s: cache
• Assignee: Unassigned
• Reporter: Valentin Kulichenko
• Created: 21/Jul/17 00:04
• Updated: 16/Nov/17 01:33
• Resolved: 16/Nov/17 01:33

Description

It seems that presently all metrics we have for page memory are about number of entries and number of pages.

It would be useful to have metrics showing how much memory in bytes is allocated:

• Per memory policy.
• Per cache.
• Separately for data, for indexes and probably other structures that consume memory.

In addition, there has to be an easy way to enable the metrics. Presently it's 3-step process for cache metrics:
http://apache-ignite-developers.2346864.n4.nabble.com/Annoying-extra-steps-for-enabling-metrics-td21865.html

Issue Links

• contains: IGNITE-1244 Need to expose offheap memory size allocated for indexes to cache metrics
• duplicates: IGNITE-6902 Implement new JMX metrics for Memory Regions
• incorporates: IGNITE-6814 Detailed memory consumption on start and OOM reporting