1 Reply Latest reply on Apr 18, 2017 10:27 AM by william.burns

Get memory used by cache

nneharawatt Apr 18, 2017 6:38 AM

I am using memory based eviction by following these steps : Infinispan: Memory based eviction

Now, At any point in time, I want to know the size of cache already used( in terms of memory size and not number of entries). I checked the getStats() call but I do not see any such stats being returned.

How can I achieve that?

1. Re: Get memory used by cache

william.burns Apr 18, 2017 10:27 AM (in response to nneharawatt)

To be honest this isn't available currently. The only way I can think of getting an estimate would be to take a heap dump and use a tool such as Eclipse MAT [1]. You can go ahead and log an improvement though to expose our internal counter if you want. Unfortunately it lives in Caffeine [2] and we would need to extract it and expose it. We do however currently expose how much off heap memory is in use if you are using Infinispan 9 with OFF HEAP memory container [3].

[1] Eclipse Memory Analyzer Open Source Project
[2] GitHub - ben-manes/caffeine: A high performance caching library for Java 8
[3] infinispan/Stats.java at master · infinispan/infinispan · GitHub
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