- 24 3月, 2014 1 次提交
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由 tschatzl 提交于
Summary: Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time. Reviewed-by: mgerdin, brutisso
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- 20 1月, 2014 1 次提交
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由 tschatzl 提交于
8027455: Improve symbol table scan times during gc pauses Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set. Reviewed-by: mgerdin, coleenp, brutisso
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- 15 8月, 2013 1 次提交
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由 johnc 提交于
Summary: Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead. Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn
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- 01 8月, 2013 1 次提交
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由 brutisso 提交于
Reviewed-by: tschatzl, jmasa
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- 05 6月, 2013 1 次提交
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由 johnc 提交于
Summary: In a full GC, move the verification after the GC to after RSet rebuilding. Verify RSet entries during a full GC under control of a flag. Reviewed-by: tschatzl, brutisso
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- 10 5月, 2013 1 次提交
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由 johnc 提交于
Summary: Refactor G1's hot card cache and card counts table into their own files. Simplify the card counts table, including removing the encoding of the card index in each entry. The card counts table now has a 1:1 correspondence with the cards spanned by heap. Space for the card counts table is reserved from virtual memory (rather than C heap) during JVM startup and is committed/expanded when the heap is expanded. Changes were also reviewed-by Vitaly Davidovich. Reviewed-by: tschatzl, jmasa
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- 22 2月, 2013 1 次提交
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由 poonam 提交于
Reviewed-by: brutisso, johnc Contributed-by: vladimir.kempik@oracle.com
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- 07 2月, 2013 1 次提交
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由 jwilhelm 提交于
Summary: Flags changed to be of uintx type Reviewed-by: johnc, tamao
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- 16 1月, 2013 1 次提交
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由 johnc 提交于
Summary: Changes to default and ergonomic flag values recommended by performance team. Changes were also reviewed by Monica Beckwith <monica.beckwith@oracle.com>. Reviewed-by: brutisso, huntch
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- 22 12月, 2012 1 次提交
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由 johnc 提交于
Summary: Rename G1DefaultMinNewGenPercent, G1DefaultMaxNewGenPercent, and G1OldCSetRegionLiveThresholdPercent to G1NewSizePercent, G1MaxNewSizePercent, and G1MixedGCLiveThresholdPercent respectively. The previous names are no longer accepted. Reviewed-by: brutisso, ysr
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- 29 8月, 2012 1 次提交
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由 johnc 提交于
Summary: Add the flags G1EvacuationFailureALot flag (and supporting flags) to force trigger evacuation failures. The support flags control how often to trigger an evacuation failure and during which types of evacuation pause. This functionality is analogous to that of PromotionFailureALot for the other collectors. Reviewed-by: brutisso
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- 23 8月, 2012 1 次提交
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由 brutisso 提交于
Summary: Also reviewed by: vitalyd@gmail.com. Make G1DefaultMinNewGenPercent, G1DefaultMaxNewGenPercent, G1OldCSetRegionLiveThresholdPercent and G1OldCSetRegionThresholdPercent experimental flags Reviewed-by: ysr, johnc, jmasa
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- 26 6月, 2012 1 次提交
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由 johnc 提交于
Summary: Remove the per-thread expansion tables (PosParPRT) and associated expansion and compaction from the fine grain RSet entries. This code has been unused for a while. Reviewed-by: johnc, brutisso Contributed-by: NThomas Schatzl <thomas.schatzl@jku.at>
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- 19 4月, 2012 1 次提交
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由 tonyp 提交于
Summary: Cleanup of the CSet chooser class: standardize on uints for region num and indexes (instead of int, jint, etc.), make the method / field naming style more consistent, remove a lot of dead code. Reviewed-by: johnc, brutisso
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- 13 4月, 2012 1 次提交
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由 brutisso 提交于
Summary: Added log levels "fine", "finer" and "finest". Let PrintGC map to "fine" and PrintGCDetails map to "finer". Separated out the per worker information in the G1 logging to the "finest" level. Reviewed-by: stefank, jwilhelm, tonyp, johnc
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- 06 4月, 2012 1 次提交
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由 tonyp 提交于
Summary: Removed lots of dead code after some recent conc mark changes. Reviewed-by: brutisso, johnc
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- 23 3月, 2012 1 次提交
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由 tonyp 提交于
Summary: Make two G1 cmd line flags available in product builds: G1HeapWastePercent (previously called: G1OldReclaimableThresholdPercent) and G1MixedGCCountTarget (previous called: G1MaxMixedGCNum). Also changed the default of the former from 1% to 5% and the default for G1OldCSetRegionLiveThresholdPercent to 90%. Reviewed-by: azeemj, jwilhelm, johnc
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- 16 2月, 2012 1 次提交
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由 tonyp 提交于
Summary: Revamp of the mechanism that chooses old regions for inclusion in the CSet. It simplifies the code and introduces min and max bounds on the number of old regions added to the CSet at each mixed GC to avoid pathological cases. It also ensures that when we do a mixed GC we'll always find old regions to add to the CSet (i.e., it eliminates the case where a mixed GC will collect no old regions which can happen today). Reviewed-by: johnc, brutisso
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- 11 1月, 2012 1 次提交
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由 brutisso 提交于
Reviewed-by: tonyp, jmasa
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- 22 12月, 2011 1 次提交
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由 brutisso 提交于
Summary: Use a percentage of -Xms as min and another percentage of -Xmx as max for the young gen size Reviewed-by: tonyp, johnc
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- 28 9月, 2011 1 次提交
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由 brutisso 提交于
Summary: Remove the extra guard to allow G1 to use ReduceInitialCardMarks Reviewed-by: jmasa, tonyp, johnc, ysr
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- 09 9月, 2011 1 次提交
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由 tonyp 提交于
Reviewed-by: brutisso, ysr
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- 08 9月, 2011 1 次提交
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由 tonyp 提交于
Summary: Fixed inconsistencies and mistakes in the young list target length calculations so that a) the calculated target length is optimal (before, it was not), b) other parameters like max survivor size and max gc locker eden expansion are always consistent with the calculated target length (before, they were not always), and c) the resulting target length was always bound by desired min and max values (before, it was not). Reviewed-by: brutisso, johnc
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- 01 9月, 2011 1 次提交
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由 johnc 提交于
Summary: Remove the macro assembler routine br_on_reg_cond() and replace the remaining calls to that routine with an equivalent. Reviewed-by: kvn, iveresov
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- 22 8月, 2011 1 次提交
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由 tonyp 提交于
7081064: G1: remove develop params G1FixedSurvivorSpaceSize, G1FixedTenuringThreshold, and G1FixedEdenSize Summary: Remove three develop parameters we don't use. Reviewed-by: brutisso, jwilhelm
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- 19 8月, 2011 1 次提交
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由 brutisso 提交于
Summary: Removed the possibility to turn off generational mode for G1. Reviewed-by: johnc, ysr, tonyp
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- 19 11月, 2011 1 次提交
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由 tonyp 提交于
Summary: Major cleanup of the G1CollectorPolicy class. It removes a lot of unused fields and methods and also consolidates replicated information (mainly various ways of counting the number of CSet regions) into one copy. Reviewed-by: johnc, brutisso
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- 30 4月, 2011 1 次提交
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由 tonyp 提交于
7034139: G1: assert(Thread::current()->is_ConcurrentGC_thread()) failed: only a conc GC thread can call this. Summary: We were calling STS join and leave during a STW pause and we are not suppoesed to. I now only call those during concurrent phase. I also added stress code in the non-product builds to force an overflows (the condition that ws uncovering the bug) to make sure it does not happen again. Reviewed-by: johnc, brutisso
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- 20 4月, 2011 1 次提交
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由 tonyp 提交于
Summary: It introduces non-product cmd line parameter G1DummyRegionsPerGC which indicates how many "dummy" regions to allocate at the end of each GC. This allows the G1 heap to grow artificially and makes concurrent marking cycles more frequent irrespective of what the application that is running is doing. The dummy regions will be found totally empty during cleanup so this parameter can also be used to stress the concurrent cleanup operation. Reviewed-by: brutisso, johnc
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- 08 4月, 2011 1 次提交
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由 johnc 提交于
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer. Reviewed-by: kvn, iveresov, never, tonyp, dholmes
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- 19 2月, 2011 1 次提交
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由 johnc 提交于
Summary: Disable reference discovery and processing during concurrent marking by disabling fix for 6994628. Reviewed-by: tonyp, ysr
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- 05 4月, 2011 1 次提交
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由 tonyp 提交于
Summary: Repurpose the existing flag G1PrintRegionLivenessInfo to print out the liveness distribution across the regions in the heap at the end of marking. Reviewed-by: iveresov, jwilhelm
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- 29 3月, 2011 1 次提交
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由 johnc 提交于
Summary: Manage allocation/freeing of the card cache counts and epochs arrays directly so that an allocation failure while attempting to expand these arrays does not abort the JVM. Failure to expand these arrays is not fatal. Reviewed-by: iveresov, tonyp
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- 03 2月, 2011 1 次提交
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由 johnc 提交于
7007446: G1: expand the heap with a single step, not one region at a time Summary: Changed G1CollectedHeap::expand() to expand the committed space by calling VirtualSpace::expand_by() once rather than for every region in the expansion amount. This allows the success or failure of the expansion to be determined before creating any heap regions. Introduced a develop flag G1ExitOnExpansionFailure (false by default) that, when true, will exit the VM if the expansion of the committed space fails. Finally G1CollectedHeap::expand() returns a status back to it's caller so that the caller knows whether to attempt the allocation. Reviewed-by: brutisso, tonyp
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- 26 1月, 2011 1 次提交
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由 johnc 提交于
Summary: Implement support for ParallelRefProcEnabled in the reference processing that takes place at the end of G1 concurrent marking. Reviewed-by: tonyp, ysr
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- 20 1月, 2011 1 次提交
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由 tonyp 提交于
Summary: This changeset removes the zero-filling thread from G1 and collapses the two free region lists we had before (the "free" and "unclean" lists) into one. The new free list uses the new heap region sets / lists abstractions that we'll ultimately use it to keep track of all regions in the heap. A heap region set was also introduced for the humongous regions. Finally, this change increases the concurrency between the thread that completes freeing regions (after a cleanup pause) and the rest of the system (before we'd have to wait for said thread to complete before allocating a new region). The changest also includes a lot of refactoring and code simplification. Reviewed-by: jcoomes, johnc
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- 19 1月, 2011 1 次提交
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由 tonyp 提交于
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads. Reviewed-by: johnc, ysr
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- 24 11月, 2010 1 次提交
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由 stefank 提交于
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
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- 13 10月, 2010 1 次提交
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由 johnc 提交于
Summary: Remove G1RemSet base class and StupidG1RemSet class; rename HRInto_G1RemSet to just G1RemSet. Reviewed-by: ysr, tonyp
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- 28 5月, 2010 1 次提交
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由 trims 提交于
Summary: Change all the Sun copyrights to Oracle copyright Reviewed-by: ohair
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