[jira] [Updated] (IGNITE-4959) Possible slight memory leak in free list

["Maxim Muzafarov (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-4959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maxim Muzafarov updated IGNITE-4959:
------------------------------------
    Issue Type: Bug  (was: Improvement)

> Possible slight memory leak in free list
> ----------------------------------------
>
>                 Key: IGNITE-4959
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4959
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 2.0
>            Reporter: Ivan Rakov
>            Assignee: Alexey Goncharuk
>            Priority: Major
>             Fix For: 2.8
>
>
> To reproduce, run PageEvictionMultinodeTest (any eviction mode), set ENTRIES to Integer.MAX_VALUE.
> Observations:
> 1) After a few minutes of test running, number of allocated pages looks like a constant (a bit more than eviciton threshold, 90% by default). This is expected behaviour with enabled page eviction.
> 2) More precise measurement shows that there's slow linear growth of allocated pages number, literally 10-20 pages per minute.
> 3) Number of pages with type T_PAGE_LIST_NODE grows, number of all other pages remains constant.
> 4) Though, total number of data pages in free list remains constant (with minor fluctuations).
> We have to find out whether this process has a saturation point, after which pages number stops growing. Otherwise, it's a memory leak and should be fixed.



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