i wondered if it was actually doing anything because activity monitor
wasn't showing visualvm using the processor or memory. so i checked the
log file and got this
WARNING [org.netbeans.modules.progress.spi.InternalHandle]: Cannot call
progress on a task that was never started at
com.sun.tools.visualvm.heapviewer.HeapFragment$1.stateChanged(HeapFragment.java:72)
WARNING [null]: Last record repeated more than 10 times, further logs of
this record are ignored until the log record changes.
WARNING [null]: Last record repeated 372 times in total.
SEVERE [org.openide.util.RequestProcessor]: Error in RequestProcessor
com.sun.tools.visualvm.heapviewer.model.DataType$RetainedSize$1
java.lang.NullPointerException
at
org.netbeans.lib.profiler.heap.HprofHeap.computeReferences(HprofHeap.java:639)
at
org.netbeans.lib.profiler.heap.NearestGCRoot.computeGCRoots(NearestGCRoot.java:124)
at
org.netbeans.lib.profiler.heap.NearestGCRoot.getLeaves(NearestGCRoot.java:401)
at
org.netbeans.lib.profiler.heap.HprofHeap.computeRetainedSize(HprofHeap.java:713)
at
org.netbeans.lib.profiler.heap.HprofHeap.computeRetainedSizeByClass(HprofHeap.java:776)
at
org.netbeans.lib.profiler.heap.ClassDump.getRetainedSizeByClass(ClassDump.java:147)
at
com.sun.tools.visualvm.heapviewer.model.DataType$RetainedSize.computeValuesImmediately(DataType.java:214)
at
com.sun.tools.visualvm.heapviewer.model.DataType$RetainedSize$1.run(DataType.java:197)
at
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
at
org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
[catch] at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)
On 27/12/2018 12:45, Matthew Broadhead wrote:
thanks Bruno. i have started doing it this end as well as i didn't
realise it was important to compute the retained values. eclipse
memory analyser seems to have the retained values after loading but
maybe doesn't drill far enough in
On 27/12/2018 10:23, Bruno Baptista wrote:
Hi Matthew,
I've loaded the heap profile here but its taking hours to compute the
retained values. I'm tempted to cancel and try the Java 11 version to
see if it's faster...
Cheers
Bruno Baptista
https://twitter.com/brunobat_
On 26/12/18 12:17, Matthew Broadhead wrote:
whoops...i sent my localhost version by mistake. i am uploading the
production one now which zipped to 900MB
On 26/12/2018 13:01, Matthew Broadhead wrote:
hi Bruno,
no i am not directly using BVal as far as i am aware
i zipped it to under 600MB. i shared you and Jean-Louis a link via
google drive. let me know if there are any problems
On 26/12/2018 12:31, Bruno Baptista wrote:
Hi Mathew,
Thanks.
Are you including some bval dependency in the code of your own app?
You can zip that file. It will get much smaller. If you could
share it, it would be nice indeed.
Cheers!
Bruno Baptista
https://twitter.com/brunobat_
On 26/12/18 11:27, Matthew Broadhead wrote:
the top 4 classes on the dominator table are
class - objects - retained heap - percentage
org.apache.bval.cdi.BValExtension - 27 - 785,781,368 - 50.38%
org.apache.webbeans.container.BeanManagerImpl - 27 - 262,583,784
- 16.84%
org.apache.openjpa.kernel.FinalizingBrokerImpl - 6,643 -
81,369,760 - 5.22%
java.lang.Class - 52,286 - 59,176,176 - 3.79%
i have been using OpenJDK forever
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/bin/java
i can make the jvm.hprof available by gogole drive or similar (at
risk of making myself look stupid for having a big memory leak!).
it is 3.2GB
On 26/12/2018 12:19, Bruno Baptista wrote:
Hi Matthew
It comes with the JDK, just type:
$ jvisualvm
But that BValExtension usage is intriguing.
Can you please let us know the top 4 classes in the retained list?
This is on 7.0.5 plus with Oracle JDK 8?
Cheers
Bruno Baptista
https://twitter.com/brunobat_
On 26/12/18 11:10, Matthew Broadhead wrote:
hi Bruno,
i can't find visualvm in centos. i had it in ubuntu but i
don't know which centos repo it is in. i suppose i could
download it directly...
eclipse memory analyser gives me a retained heap size of
785,781,368 for org.apache.bval.cdi.BValExtension which is
50.38% of everything.
On 26/12/2018 11:23, Bruno Baptista wrote:
Thant's interesting Matthew.
Usually I open those in jvisualvm. I go to classes and
activate the retained column.
That column will calculate the retained (effective) memory
usage by class.
Usually it takes a while to calculate, that's why it's not on
by default.
Cheers
Bruno Baptista
https://twitter.com/brunobat_
On 26/12/18 09:28, Matthew Broadhead wrote:
TomEE 7.0.5 plus
i had a recent memory leak which was stalling the server
every couple of days. so i did a heap dump and solved that
problem.
then i decided to do another heap dump because the server is
running pretty slowly. each page is taking a few seconds to
load on a 32GB system. (i did clear out work directory)
it turns out that more than half of the memory is consumed
with org.apache.bval.cdi.BValExtension. is this fairly
normal? using Eclipse Memory Analyser i have dug into
shortest routes to GC root but i don't find any of my objects
listed there. mostly BVal stuff. are there any tips for
debugging heap dumps?
--
Mr MT Broadhead
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