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https://issues.apache.org/jira/browse/IGNITE-7606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy Pavlov updated IGNITE-7606:
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Attachment: chart_notHoldingLock.png
chart_holdingLock.png
> Write evicted dirty page during eviction without holding segment write lock
> ---------------------------------------------------------------------------
>
> Key: IGNITE-7606
> URL: https://issues.apache.org/jira/browse/IGNITE-7606
> Project: Ignite
> Issue Type: Improvement
> Components: persistence
> Reporter: Dmitriy Pavlov
> Assignee: Dmitriy Pavlov
> Priority: Major
> Fix For: 2.5
>
> Attachments: chart_holdingLock.png, chart_notHoldingLock.png,
> putdumpAt17second.txt
>
>
> If a dirty page under the checkpoint is found, following is suggested
> - copy it to the local thread buffer,
> - and then after performing all actions in region for evicting the page
> - finish execution allocatePage()/acquirePage()
> - unlock segment to allow other workers to operate
> - perform the pwrite() call based on the data from local buffer
> Now if page eviction started there is possible drops to 0 put/seconds in case
> a lot of threads are watiting for same segment lock.
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