ignite-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Dmitriy Pavlov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-7489) Weird FillFactor metric fluctuation.
Date Fri, 16 Feb 2018 14:17:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-7489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367346#comment-16367346
] 

Dmitriy Pavlov commented on IGNITE-7489:
----------------------------------------

Looks good to me, thank you, [~ilyak].

[~agoncharuk], could you please merge?

> 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
>            Assignee: Ilya Kasnacheev
>            Priority: Major
>         Attachments: FillFactorTest.java
>
>
> For now there is no way to get Used\FreeMemory for region in bytes. 
> MemoryMetrics.getPagesFillFactor() javadoc says that the method return the percentage
of space that is still free and can be filled in.
> So, I'd think used memory can be calculated as PhysicalMemoryPages*PageSize*FillFactor.
> I've tried to use this, but found weir thing.
>  
> 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.
> 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
>  



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message