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Quick Lists
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Bug ID:
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6652160
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Votes
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0
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Synopsis
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G1: assert(cur_used_bytes == _g1->recalculate_used(),"It should!") at g1CollectorPolicy.cpp:1425
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Category
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hotspot:garbage_collector
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Reported Against
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Release Fixed
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hs14(b06)
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State
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10-Fix Delivered,
bug
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Priority:
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2-High
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Related Bugs
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6561328
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Submit Date
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18-JAN-2008
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Description
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Failures sighted with PRT:-
jbb on sparc32/fastdebug/c2
gcbasher on sparc32/fastdebug/c2
The assertion is not easily reproducible and can often take several
hours (and many 100's of iterations) to hit (tried on Niagara boxes).
Previous races related to this assertion/invariant have been
fixed in 6561328.
Posted Date : 2008-01-18 01:48:04.0
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Work Around
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N/A
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Evaluation
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The cause of the bug is the race between the allocation and the concurrent
cleanup for the modification of the G1CollectedHeap::_summary_bytes_used
field (G1CollectedHeap::attempt_allocation_slow() and
ConcurrentMark::completeCleanup()). The quick solution is to just serialize
these modifications.
Posted Date : 2008-07-30 13:46:31.0
http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/c0f8f7790199
Posted Date : 2008-08-28 05:37:44.0
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Comments
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PLEASE NOTE: JDK6 is formerly known as Project Mustang
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