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https://issues.apache.org/jira/browse/IGNITE-9305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16599333#comment-16599333
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Denis Magda commented on IGNITE-9305:
-------------------------------------
[~xtern],
The format looks good to me. Let's type "size=uknown" for "metastoreMemPlc"
persistence region and create a ticket to see how this can be fixed in the
future.
Btw, would there be any significant performance impact if we print out these
detailed metrics periodically? Did you need to enable resources intensive
metrics collection? In my understanding, there should be no impact.
> Wrong off-heap size is reported for a node
> ------------------------------------------
>
> Key: IGNITE-9305
> URL: https://issues.apache.org/jira/browse/IGNITE-9305
> Project: Ignite
> Issue Type: Task
> Affects Versions: 2.6
> Reporter: Denis Magda
> Assignee: Pavel Pereslegin
> Priority: Blocker
> Fix For: 2.7
>
>
> Was troubleshooting an Ignite deployment today and couldn't find out from the
> logs what was the actual off-heap space used.
> Those were the given memory resoures (Ignite 2.6):
> {code}
> [2018-08-16 15:07:49,961][INFO ][main][GridDiscoveryManager] Topology
> snapshot [ver=1, servers=1, clients=0, CPUs=64, offheap=30.0GB, heap=24.0GB]
> {code}
> And that weird stuff was reported by the node (pay attention to the last
> line):
> {code}
> [2018-08-16 15:45:50,211][INFO
> ][grid-timeout-worker-#135%cluster_31-Dec-2017%][IgniteKernal%cluster_31-Dec-2017]
>
> Metrics for local node (to disable set 'metricsLogFrequency' to 0)
> ^-- Node [id=c033026e, name=cluster_31-Dec-2017, uptime=00:38:00.257]
> ^-- H/N/C [hosts=1, nodes=1, CPUs=64]
> ^-- CPU [cur=0.03%, avg=5.54%, GC=0%]
> ^-- PageMemory [pages=6997377]
> ^-- Heap [used=9706MB, free=61.18%, comm=22384MB]
> ^-- Non heap [used=144MB, free=-1%, comm=148MB] - this line is always the
> same!
> {code}
> Had to change the code by using
> {code}dataRegion.getPhysicalMemoryPages(){code} to find out that actual
> off-heap usage size was
> {code}
> >>> Physical Memory Size: 28651614208 => 27324 MB, 26 GB
> {code}
> The logs have to report the following instead:
> {code}
> ^-- Off-heap {Data Region 1} [used={dataRegion1.getPhysicalMemorySize()},
> free=X%, comm=dataRegion1.maxSize()]
> ^-- Off-heap {Data Region 2} [used={dataRegion2.getPhysicalMemorySize()},
> free=X%, comm=dataRegion2.maxSize()]
> {code}
> If Ignite persistence is enabled then the following extra lines have to be
> added to see the disk used space:
> {code}
> ^-- Ignite persistence {Data Region 1}:
> used={dataRegion1.getTotalAllocatedSize() -
> dataRegion1.getPhysicalMemorySize()}
> ^-- Ignite persistence {Data Region 2}
> [used={dataRegion2.getTotalAllocatedSize() -
> dataRegion2.getPhysicalMemorySize()}]
> {code}
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