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Why old gen memory reduced without Full GC run
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I am doing memory profiling using yourkit.
I see the old gen memory first increases from 200MB to 490MB. Then It suddenly came down to 250MB again.
In between that the full GC never ran. It was always the youngGC run.
My questions is, if full GC didnt happen, how the old gen memory got reduced?
Also, the GC time is increasing. In last 12 hours it increased from 50ms to 150ms.
Here are the GC config:
Picked up JAVA_TOOL_OPTIONS: -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:CICompilerCount=4 -Xmx512M -Dio.netty.eventLoopThreads=4
-XX:CICompilerCount=4 -XX:ConcGCThreads=4 -XX:InitialHeapSize=536870912 -XX:MaxHeapSize=536870912 -XX:ParallelGCThreads=4 -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseParallelGC
NOTE: the traffic to the application was consistent.
linux memory java profiling
edited yesterday
Xen2050
11.6k31738
asked yesterday
PriyankaPriyanka
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New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
I am doing memory profiling using yourkit.
I see the old gen memory first increases from 200MB to 490MB. Then It suddenly came down to 250MB again.
In between that the full GC never ran. It was always the youngGC run.
My questions is, if full GC didnt happen, how the old gen memory got reduced?
Also, the GC time is increasing. In last 12 hours it increased from 50ms to 150ms.
Here are the GC config:
Picked up JAVA_TOOL_OPTIONS: -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:CICompilerCount=4 -Xmx512M -Dio.netty.eventLoopThreads=4
-XX:CICompilerCount=4 -XX:ConcGCThreads=4 -XX:InitialHeapSize=536870912 -XX:MaxHeapSize=536870912 -XX:ParallelGCThreads=4 -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseParallelGC
NOTE: the traffic to the application was consistent.
linux memory java profiling
edited yesterday
Xen2050
11.6k31738
asked yesterday
PriyankaPriyanka
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday
add a comment |
I am doing memory profiling using yourkit.
I see the old gen memory first increases from 200MB to 490MB. Then It suddenly came down to 250MB again.
In between that the full GC never ran. It was always the youngGC run.
My questions is, if full GC didnt happen, how the old gen memory got reduced?
Also, the GC time is increasing. In last 12 hours it increased from 50ms to 150ms.
Here are the GC config:
Picked up JAVA_TOOL_OPTIONS: -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:CICompilerCount=4 -Xmx512M -Dio.netty.eventLoopThreads=4
-XX:CICompilerCount=4 -XX:ConcGCThreads=4 -XX:InitialHeapSize=536870912 -XX:MaxHeapSize=536870912 -XX:ParallelGCThreads=4 -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseParallelGC
NOTE: the traffic to the application was consistent.
linux memory java profiling
edited yesterday
Xen2050
11.6k31738
asked yesterday
PriyankaPriyanka
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am doing memory profiling using yourkit.
I see the old gen memory first increases from 200MB to 490MB. Then It suddenly came down to 250MB again.
In between that the full GC never ran. It was always the youngGC run.
My questions is, if full GC didnt happen, how the old gen memory got reduced?
Also, the GC time is increasing. In last 12 hours it increased from 50ms to 150ms.
Here are the GC config:
Picked up JAVA_TOOL_OPTIONS: -XX:ConcGCThreads=4 -XX:ParallelGCThreads=4 -XX:CICompilerCount=4 -Xmx512M -Dio.netty.eventLoopThreads=4
-XX:CICompilerCount=4 -XX:ConcGCThreads=4 -XX:InitialHeapSize=536870912 -XX:MaxHeapSize=536870912 -XX:ParallelGCThreads=4 -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseParallelGC
NOTE: the traffic to the application was consistent.
linux memory java profiling
linux memory java profiling
edited yesterday
Xen2050
11.6k31738
asked yesterday
PriyankaPriyanka
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
Xen2050
11.6k31738
asked yesterday
PriyankaPriyanka
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited yesterday
Xen2050
11.6k31738
edited yesterday
Xen2050
11.6k31738
edited yesterday
Xen2050
11.6k31738
11.6k31738
asked yesterday
PriyankaPriyanka
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
PriyankaPriyanka
1
asked yesterday
PriyankaPriyanka
1
1
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Priyanka is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday
add a comment |
What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday
What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday
What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday
add a comment |
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What's a GC, full or young or otherwise? Some kind of java setting apparently, but for what?
– Xen2050
yesterday