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https://issues.apache.org/jira/browse/IGNITE-27086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18042001#comment-18042001
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Nikolay Izhikov commented on IGNITE-27086:
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[~timonin.maksim] I created a benchmark to measure BinaryWriterExImpl
performance. With the HashMap of 100_000 keys I gain around 15% performance
with the patch that not create instance of writer on each map key, value.
Please, take a look.
> BinaryWriter is created for every a map entry
> ---------------------------------------------
>
> Key: IGNITE-27086
> URL: https://issues.apache.org/jira/browse/IGNITE-27086
> Project: Ignite
> Issue Type: Improvement
> Reporter: Maksim Timonin
> Assignee: Nikolay Izhikov
> Priority: Major
> Labels: ise
> Attachments: WritingBigMapReproducer.java
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> During serializing maps BinaryWriterExImpl#writeMap is called. For every key
> and value it calls BinaryWriterExImpl#writeObject. Every such call creates
> new BinaryWriterExImpl.
> It leads to populating jvm heap with similar objects. Especially for big maps.
> See example in the attach, when big map is created as argument for a
> ComputeTask.
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