Denis Magda created IGNITE-9305:
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Summary: 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
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}
^-- Off-heap {Data Region 1}: used={dataRegion1.getTotalAllocatedSize() -
dataRegion1.getPhysicalMemorySize()}
^-- Off-heap {Data Region 2} [used={dataRegion2.getTotalAllocatedSize() -
dataRegion2.getPhysicalMemorySize()}]
{code}
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