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From dsetrak...@apache.org
Subject Re: [IGNITE-5717] improvements of MemoryPolicy default size
Date Tue, 01 Aug 2017 17:58:39 GMT
I prefer option #1.


On Aug 1, 2017, 11:20 AM, at 11:20 AM, Sergey Chugunov <sergey.chugunov@gmail.com> wrote:
>I would like to get back to the question about MemoryPolicy maxMemory
>Although MemoryPolicy may be configured with initial and maxMemory
>settings, when persistence is used MemoryPolicy always allocates
>size for performance reasons.
>As default size of maxMemory is 80% of physical memory it causes OOME
>exceptions of 32 bit platforms (either on OS or JVM level) and hurts
>performance in setups when multiple Ignite nodes are started on the
>physical server.
>I suggest to rethink these defaults and switch to other options:
>  - Check whether platform is 32 or 64 bits and adapt defaults. In this
>case we still need to address the issue with multiple nodes on one
>   even on 64 bit systems.
>   - Lower defaults for maxMemory and allocate, for instance, max(0.3 *
>   availableMemory, 1Gb).
>   This option allows us to solve all issues with starting on 32 bit
>platforms and reduce instability with multiple nodes on the same
>Thoughts and/or other options?

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