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Posted to issues@ignite.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2017/08/29 10:03:00 UTC

[jira] [Commented] (IGNITE-6182) Change default max memory size from 80% to 20%

    [ https://issues.apache.org/jira/browse/IGNITE-6182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16145036#comment-16145036 ] 

ASF GitHub Bot commented on IGNITE-6182:
----------------------------------------

GitHub user gvvinblade opened a pull request:

    https://github.com/apache/ignite/pull/2535

    IGNITE-6182

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/gridgain/apache-ignite ignite-6182

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/ignite/pull/2535.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2535
    
----
commit 1e7b4a9881b186665e6c58887725b1e860ea2d14
Author: Igor Seliverstov <gv...@gmail.com>
Date:   2017-08-28T14:10:50Z

    IGNITE-6182 Change default max memory size from 80% to 20%

----


> Change default max memory size from 80% to 20%
> ----------------------------------------------
>
>                 Key: IGNITE-6182
>                 URL: https://issues.apache.org/jira/browse/IGNITE-6182
>             Project: Ignite
>          Issue Type: Task
>          Components: general
>    Affects Versions: 2.1
>            Reporter: Vladimir Ozerov
>            Assignee: Igor Seliverstov
>            Priority: Blocker
>             Fix For: 2.2
>
>
> Currently we can allocate up to 80% of available RAM by default. It could lead to swap with potential risk of hang.
> In order to improve user experience, we need to do the following:
> 1) Decrease default to 20% ({{MemoryConfiguration.DFLT_MEMORY_POLICY_FRACTION}})
> 2) When node starts it should sum max sizes of all memory regions plus Java's XMX. If result is greater than 50% of total RAM, we should issue a warning about potential swap.



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