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https://issues.apache.org/jira/browse/IGNITE-5490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Rakov updated IGNITE-5490:
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Description:
With new 2.0 architecture, many caches can share one memory policy. Memory
metrics allows to measure memory usage (loaded pages) for the whole policy.
However, there's also a need to measure how much memory (or pages) is used by
each cache.
Before 2.0 such information was accessible with
CacheMetrics#getOffHeapAllocatedSize, but current implemetation returns 0.
We should either implement it or provide alternative metrics (e. g. approximate
number of loaded pages per cache). Please note that if persistence is
*disabled*, precise number of loaded pages per cache is not defined - one page
can contain entries of different caches.
was:
With new 2.0 architecture, many caches can share one memory policy. Memory
metrics allows to measure memory usage (loaded pages) for the whole policy.
However, there's also a need to measure how much memory (or pages) is used by
each cache.
Before 2.0 such information was accessible with
CacheMetrics#getOffHeapAllocatedSize, but current implemetation returns 0.
We should either implement it or provide alternative metrics (e. g. approximate
number of loaded pages per cache). Please note that precise number of loaded
pages per cache is not defined - one page can contain entries of different
caches.
> Implement replacement for obsolete CacheMetrics#getOffHeapAllocatedSize
> -----------------------------------------------------------------------
>
> Key: IGNITE-5490
> URL: https://issues.apache.org/jira/browse/IGNITE-5490
> Project: Ignite
> Issue Type: Improvement
> Components: cache
> Affects Versions: 2.0
> Reporter: Ivan Rakov
>
> With new 2.0 architecture, many caches can share one memory policy. Memory
> metrics allows to measure memory usage (loaded pages) for the whole policy.
> However, there's also a need to measure how much memory (or pages) is used by
> each cache.
> Before 2.0 such information was accessible with
> CacheMetrics#getOffHeapAllocatedSize, but current implemetation returns 0.
> We should either implement it or provide alternative metrics (e. g.
> approximate number of loaded pages per cache). Please note that if
> persistence is *disabled*, precise number of loaded pages per cache is not
> defined - one page can contain entries of different caches.
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