StackOverflow2013

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plurals

PO100% full Eden space, 0% used Survivor space - Garbage collection not done
primarykey
Id
11339679
data
AcceptedAnswerId
0
AnswerCount
4
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2012-07-05T07:29:45.507
FavoriteCount
7
LastActivityDate
2015-02-11T10:37:46.663
LastEditDate
2012-07-05T08:13:25.223
LastEditorUserId
1140748
OwnerUserId
1503193
ParentId
0
PostTypeId
1
Score
20
ViewCount
38438
LastEditorDisplayName
text
Body
I have encountered a rather confusing GC case: While the Eden space is 100% full, 0% survivor space is used. When the Eden is full, garbage collection should be triggered, right? Can there be a case in which the GC daemon is prevented from running? Like a 100% CPU? We are using <code>jdk-1.7</code>. What can be the cause? Below is the jmap output. We also tried to capture a more detailed memory usage using <code>jmap -histo -F</code>, but then the CPU usage dropped to 0% and the java process became unreachable. <pre><code>using thread-local object allocation. Parallel GC with 18 thread(s) Heap Configuration: MinHeapFreeRatio = 40 MaxHeapFreeRatio = 70 MaxHeapSize = 12884901888 (12288.0MB) NewSize = 1310720 (1.25MB) MaxNewSize = 17592186044415 MB OldSize = 5439488 (5.1875MB) NewRatio = 2 SurvivorRatio = 8 PermSize = 21757952 (20.75MB) MaxPermSize = 85983232 (82.0MB) G1HeapRegionSize = 0 (0.0MB) Heap Usage: PS Young Generation Eden Space: capacity = 4265738240 (4068.125MB) used = 4265738240 (4068.125MB) free = 0 (0.0MB) 100.0% used From Space: capacity = 14352384 (13.6875MB) used = 0 (0.0MB) free = 14352384 (13.6875MB) 0.0% used To Space: capacity = 14680064 (14.0MB) used = 0 (0.0MB) free = 14680064 (14.0MB) 0.0% used PS Old Generation capacity = 8589934592 (8192.0MB) used = 8589931920 (8191.997451782227MB) free = 2672 (0.0025482177734375MB) 99.99996889382601% used PS Perm Generation capacity = 41353216 (39.4375MB) used = 41079056 (39.17604064941406MB) free = 274160 (0.2614593505859375MB) 99.33702858805468% used </code></pre>
Tags
<java><garbage-collection>
Title
100% full Eden space, 0% used Survivor space - Garbage collection not done
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USalain.janinm
UserOwnerUserId
1. USkuloglan
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTDuplicate
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO100% full Eden space, 0% used Survivor space - Garbage collection not done
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 PO100% full Eden space, 0% used Survivor space - Garbage collection not done
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 PO100% full Eden space, 0% used Survivor space - Garbage collection not done
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId

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