JVM metaspace is filled after minor garbage collection
I have been looking into Java memory management and various sections in the heap memory like eden, s0, s1, old gen and metaspace. I was using VisualGC for tracking how memory is filled among different sections of heap. I noticed there is a sharp increase in the amount of memory occupied in the metaspace area after first garbage collection.
Here's an image of the VisualGC representation:
I would like to understand what gets added to metaspace after the first gc. I did research but couldn't get answers. Any help here?
java garbage-collection heap-memory visualvm metaspace
edited Nov 23 '18 at 18:24
Slaw
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
add a comment |
I have been looking into Java memory management and various sections in the heap memory like eden, s0, s1, old gen and metaspace. I was using VisualGC for tracking how memory is filled among different sections of heap. I noticed there is a sharp increase in the amount of memory occupied in the metaspace area after first garbage collection.
Here's an image of the VisualGC representation:
I would like to understand what gets added to metaspace after the first gc. I did research but couldn't get answers. Any help here?
java garbage-collection heap-memory visualvm metaspace
edited Nov 23 '18 at 18:24
Slaw
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
add a comment |
I have been looking into Java memory management and various sections in the heap memory like eden, s0, s1, old gen and metaspace. I was using VisualGC for tracking how memory is filled among different sections of heap. I noticed there is a sharp increase in the amount of memory occupied in the metaspace area after first garbage collection.
Here's an image of the VisualGC representation:
I would like to understand what gets added to metaspace after the first gc. I did research but couldn't get answers. Any help here?
java garbage-collection heap-memory visualvm metaspace
edited Nov 23 '18 at 18:24
Slaw
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
I have been looking into Java memory management and various sections in the heap memory like eden, s0, s1, old gen and metaspace. I was using VisualGC for tracking how memory is filled among different sections of heap. I noticed there is a sharp increase in the amount of memory occupied in the metaspace area after first garbage collection.
Here's an image of the VisualGC representation:
I would like to understand what gets added to metaspace after the first gc. I did research but couldn't get answers. Any help here?
java garbage-collection heap-memory visualvm metaspace
java garbage-collection heap-memory visualvm metaspace
edited Nov 23 '18 at 18:24
Slaw
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
edited Nov 23 '18 at 18:24
Slaw
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
edited Nov 23 '18 at 18:24
Slaw
7,99831033
edited Nov 23 '18 at 18:24
Slaw
7,99831033
edited Nov 23 '18 at 18:24
Slaw
7,99831033
7,99831033
asked Nov 23 '18 at 17:36
meesunmeesun
213
asked Nov 23 '18 at 17:36
meesunmeesun
213
asked Nov 23 '18 at 17:36
meesunmeesun
213
213
add a comment |
add a comment |
1 Answer
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Metaspace is not "full". According to the captions, the limit for metaspace is 1.008G but you have 8.602M in there (out of a 9.125M initial allocation). That is about 1% of the limit.
Metaspace contains things related to classes; i.e. bytecodes, compiled native code, descriptors, statics. ~8M bytes is quite a modest amount of metaspace for a typical Java application that pulls in a few Java SE or 3rd-party library classes.
I would like to understand what gets added to metaspace after the first gc.
I suspect that it is just an accounting thing; i.e. the amount of memory used by metaspace only gets updated when the GC runs. If you notice, the 2 apparent changes in metaspace usage (after the start of recording) both coincide with a GC event.
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
add a comment |
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1 Answer
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1 Answer
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active
oldest
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active
oldest
votes
Metaspace is not "full". According to the captions, the limit for metaspace is 1.008G but you have 8.602M in there (out of a 9.125M initial allocation). That is about 1% of the limit.
Metaspace contains things related to classes; i.e. bytecodes, compiled native code, descriptors, statics. ~8M bytes is quite a modest amount of metaspace for a typical Java application that pulls in a few Java SE or 3rd-party library classes.
I would like to understand what gets added to metaspace after the first gc.
I suspect that it is just an accounting thing; i.e. the amount of memory used by metaspace only gets updated when the GC runs. If you notice, the 2 apparent changes in metaspace usage (after the start of recording) both coincide with a GC event.
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
add a comment |
Metaspace is not "full". According to the captions, the limit for metaspace is 1.008G but you have 8.602M in there (out of a 9.125M initial allocation). That is about 1% of the limit.
Metaspace contains things related to classes; i.e. bytecodes, compiled native code, descriptors, statics. ~8M bytes is quite a modest amount of metaspace for a typical Java application that pulls in a few Java SE or 3rd-party library classes.
I would like to understand what gets added to metaspace after the first gc.
I suspect that it is just an accounting thing; i.e. the amount of memory used by metaspace only gets updated when the GC runs. If you notice, the 2 apparent changes in metaspace usage (after the start of recording) both coincide with a GC event.
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
add a comment |
Metaspace is not "full". According to the captions, the limit for metaspace is 1.008G but you have 8.602M in there (out of a 9.125M initial allocation). That is about 1% of the limit.
Metaspace contains things related to classes; i.e. bytecodes, compiled native code, descriptors, statics. ~8M bytes is quite a modest amount of metaspace for a typical Java application that pulls in a few Java SE or 3rd-party library classes.
I would like to understand what gets added to metaspace after the first gc.
I suspect that it is just an accounting thing; i.e. the amount of memory used by metaspace only gets updated when the GC runs. If you notice, the 2 apparent changes in metaspace usage (after the start of recording) both coincide with a GC event.
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
Metaspace is not "full". According to the captions, the limit for metaspace is 1.008G but you have 8.602M in there (out of a 9.125M initial allocation). That is about 1% of the limit.
Metaspace contains things related to classes; i.e. bytecodes, compiled native code, descriptors, statics. ~8M bytes is quite a modest amount of metaspace for a typical Java application that pulls in a few Java SE or 3rd-party library classes.
I would like to understand what gets added to metaspace after the first gc.
I suspect that it is just an accounting thing; i.e. the amount of memory used by metaspace only gets updated when the GC runs. If you notice, the 2 apparent changes in metaspace usage (after the start of recording) both coincide with a GC event.
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
answered Nov 24 '18 at 1:20
Stephen CStephen C
518k70572928
518k70572928
add a comment |
add a comment |
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