[infinispan-issues] [JBoss JIRA] (ISPN-8397) Tune eviction and memory settings for Caching Service

[Sebastian Łaskawiec (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-8397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491397#comment-13491397 ] 

Sebastian Łaskawiec commented on ISPN-8397:
-------------------------------------------

Current setup:
* Container Size - Xmx (100 MB) 
* JVM overhead (200 MB) 
* 30% of Container Capacity (measured empirically, lower value caused the container to crash)

Test details:
* Test was performed with 1K key and value
* 2 Threads were inserting and getting values from the cache

Test results:
* https://docs.google.com/spreadsheets/u/1/d/1ILk1gqdtY8bYArfwKCg5DBcjLO1gs0m45lJNtVf9Vmc/edit?usp=sharing
* For 700 MB Container, the calculated eviction size is 190 MB. 
* For 512 MB, it's ~59 MB.
* 430 MB is the smallest container you can get with those values. Otherwise negative eviction parameter is calculated, which is not valid.
* 1 GB container was ran using 10K keys and values. Calculated eviction size was 346 MB.

[~william.burns] mentioned that:
* Off-heap scales pretty good and the lowest observer overhead was 100 B/entry.
* There is no noticeable difference between 1 and 2 threads in the test.
* Someones eviction doesn't work for some reason.
* Calling {{clear}} might be a potential problem because it load all entries on heap.

Full explanation has been described [here|http://post-office.corp.redhat.com/archives/jboss-clustering-team/2017-November/msg00087.html]. The calibration work will be continued in ISPN-8540.

> Tune eviction and memory settings for Caching Service
> -----------------------------------------------------
>
>                 Key: ISPN-8397
>                 URL: https://issues.jboss.org/browse/ISPN-8397
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Cloud Integrations
>            Reporter: Sebastian Łaskawiec
>            Assignee: Sebastian Łaskawiec
>
> We need to prevent going out of memory. This requires tuning memory as well as eviction settings.



--
This message was sent by Atlassian JIRA
(v7.5.0#75005)