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Posted to issues@ignite.apache.org by "Andrew Mashenkov (JIRA)" <ji...@apache.org> on 2018/01/23 10:25:00 UTC

[jira] [Updated] (IGNITE-7489) Weird FillFactor metric fluctuation.

     [ https://issues.apache.org/jira/browse/IGNITE-7489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Mashenkov updated IGNITE-7489:
-------------------------------------
    Affects Version/s: 2.1
                       2.2
                       2.3

> Weird FillFactor metric fluctuation.
> ------------------------------------
>
>                 Key: IGNITE-7489
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7489
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.1, 2.2, 2.3
>            Reporter: Andrew Mashenkov
>            Priority: Major
>         Attachments: FillFactorTest.java
>
>
> PFA a repro.
> There is 2 node grid with no persistence configure. Topology is stable.
> Cache is populated with unique keys (no updates) and observe allocated data pages metric grows constantly as expected.
> Used memory is calculated as PhysicalMemoryPages*PageSize*FillFactor and expected it will be constantly grows (or may be with a small error).
> But the error look too large, used memory (and FillFactor as well) may 2-10+ time differs.
>  
> E.g. allocated pages, fillFactor, usedMem (bytes):
> node-0: 13789 0.851563 48096032
> node-1: 14447 0.781250 46230400
> In next second:
> node-0: 13958 0.039063 2233280
> node-1: 14624 0.347656 20824576
>  
>  



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