RFR(s): 8152422: Optimize GC JPRT test set

Per Liden per.liden at oracle.com
Tue Mar 29 09:37:03 UTC 2016


Hi Dima,

On 2016-03-23 18:28, Dmitry Fazunenko wrote:
> Hello,
>
> may I have a couple of reviews for a quite trivial fix, which splits up
> the hotspot_gc jtreg group:
>
> http://cr.openjdk.java.net/~dfazunen/8152422/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8152422

Looks good.

cheers,
Per

>
> The purpose of the split is to parallelize the execution of GC tests in
> JPRT.
> Running the tests located under the gc/g1 folder takes approximately the
> same amount of time as running other tests.
>
> To reduce the execution time (for ~20%) I propose to remove a couple of
> slow tests from JPRT run:
>
> 38,52 : gc/cms/TestMBeanCMS.java (former name
> test/gc/6581734/Test6581734.java)
>     CMS is updating vary rare now, so it's very unlikely to break the
> area under this test
>
> 18,05 :
> gc/survivorAlignment/TestPromotionFromSurvivorToTenuredAfterMinorGC.java
>     There will remain  3 very similar tests for survivor alignment
>           5,38 : gc/survivorAlignment/TestPromotionFromEdenToTenured.java
>           6,47 : gc/survivorAlignment/TestAllocationInEden.java
>           6,78 :
> gc/survivorAlignment/TestPromotionFromSurvivorToTenuredAfterFullGC.java
>      so dropping this test will not create a gap in testing.
>
> I also restored test which were excluded from JPRT execution a year ago:
>     90,66 : gc/g1/TestGreyReclaimedHumongousObjects.java
>    the test is the slowest one, but after the split it fits the budget.
>
> If someone has objections on adding/removing JPRT tests, please speak up.
>
> Thanks,
> Dima
>
> PS:
> The new statistics (taken from
> linux_i586_3.8-fastdebug-c1-hotspot_gc_*.log)  now looks like:
> *:hotspot_gc_1**
> *       0,12 : gc/g1/TestShrinkAuxiliaryData25.java
>         0,14 : gc/g1/TestShrinkAuxiliaryData05.java
>         0,21 : gc/g1/TestShrinkAuxiliaryData10.java
>         0,21 : gc/g1/TestShrinkAuxiliaryData15.java
>         0,23 : gc/g1/TestShrinkAuxiliaryData30.java
>         0,28 : gc/g1/TestShrinkToOneRegion.java
>         0,31 : gc/g1/TestStringSymbolTableStats.java
>         0,38 : gc/g1/TestRegionAlignment.java
>         0,43 : gc/g1/TestStringDeduplicationInterned.java
>         0,45 : gc/g1/TestHumongousAllocInitialMark.java
>         0,54 : gc/g1/TestShrinkAuxiliaryData20.java
>         0,55 : gc/g1/TestRegionLivenessPrint.java
>         0,63 : gc/g1/TestNoEagerReclaimOfHumongousRegions.java
>         0,64 : gc/g1/TestHumongousAllocNearlyFullRegion.java
>         0,67 : gc/g1/TestRemsetLoggingPerRegion.java
>         0,68 : gc/g1/humongousObjects/TestObjectCollected.java
>         0,77 : gc/g1/TestStringDeduplicationFullGC.java
>         0,80 : gc/g1/Test2GbHeap.java
>         0,82 : gc/g1/TestPLABOutput.java
>         0,86 : gc/g1/TestPrintRegionRememberedSetInfo.java
>         0,93 : gc/g1/TestStringDeduplicationTableResize.java
>         0,94 : gc/g1/TestHumongousShrinkHeap.java
>         0,95 : gc/g1/humongousObjects/TestHumongousMovement.java
>         1,00 : gc/g1/TestShrinkAuxiliaryData00.java
>         1,02 : gc/g1/TestStringDeduplicationTableRehash.java
>         1,02 : gc/g1/TestStringDeduplicationYoungGC.java
>         1,05 : gc/g1/TestRemsetLoggingThreads.java
>         1,17 : gc/g1/TestShrinkDefragmentedHeap.java
>         1,37 : gc/g1/TestStringDeduplicationPrintOptions.java
>         1,48 : gc/g1/TestGCLogMessages.java
>         1,94 : gc/g1/TestStringDeduplicationAgeThreshold.java
>         2,21 : gc/g1/TestPLABSizeBounds.java
>         2,36 : gc/g1/TestLargePageUseForAuxMemory.java
>         2,72 : gc/g1/TestEagerReclaimHumongousRegionsWithRefs.java
>         2,85 : gc/g1/TestEagerReclaimHumongousRegions.java
>         2,87 : gc/g1/TestG1TraceEagerReclaimHumongousObjects.java
>         2,88 : gc/g1/TestRemsetLogging.java
>         3,57 : gc/g1/plab/TestPLABResize.java
>         8,26 : gc/g1/humongousObjects/TestHeapCounters.java
>         8,72 : gc/g1/humongousObjects/TestHumongousThreshold.java
>        10,95 : gc/g1/TestHumongousCodeCacheRoots.java
>        14,49 : gc/g1/plab/TestPLABPromotion.java
>        52,17 : gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java
>        59,11 : gc/g1/humongousObjects/TestHumongousNonArrayAllocation.java
>        90,66 : gc/g1/TestGreyReclaimedHumongousObjects.java
> SUMMARY:
>     Totat tests: 45
>     Totat time: 4m 46s
>
> *:hotspot_gc_2**
> *       0,08 : gc/arguments/TestCompressedClassFlags.java
>         0,09 : gc/startup_warnings/TestDefNewCMS.java
>         0,20 : gc/startup_warnings/TestParNewSerialOld.java
>         0,21 : gc/arguments/TestUseNUMAInterleaving.java
>         0,28 : gc/startup_warnings/TestParallelScavengeSerialOld.java
>         0,28 : gc/startup_warnings/TestParallelGC.java
>         0,29 : gc/startup_warnings/TestParNewCMS.java
>         0,30 : gc/logging/TestPrintReferences.java
>         0,30 : gc/startup_warnings/TestG1.java
>         0,30 : gc/cms/TestCMSScavengeBeforeRemark.java
>         0,31 : gc/TestVerifyDuringStartup.java
>         0,32 : gc/startup_warnings/TestSerialGC.java
>         0,33 : gc/TestVerifySubSet.java
>         0,37 : gc/TestNUMAPageSize.java
>         0,37 : sanity/ExecuteInternalVMTests.java
>         0,37 : gc/metaspace/TestMetaspaceInitialization.java
>         0,41 : gc/whitebox/TestWBGC.java
>         0,47 : gc/arguments/TestSelectDefaultGC.java
>         0,47 : gc/TestVerifySilently.java
>         0,50 : gc/arguments/TestUnrecognizedVMOptionsHandling.java
>         0,51 : gc/startup_warnings/TestCMS.java
>         0,53 : gc/arguments/TestG1ConcMarkStepDurationMillis.java
>         0,53 : gc/arguments/TestNewSizeThreadIncrease.java
>         0,60 : gc/arguments/TestG1ConcRefinementThreads.java
>         0,67 : gc/arguments/TestG1HeapRegionSize.java
>         0,77 : gc/arguments/TestArrayAllocatorMallocLimit.java
>         0,80 : gc/class_unloading/TestG1ClassUnloadingHWM.java
>         0,80 : gc/TestFullGCCount.java
>         0,80 : gc/arguments/TestG1PercentageOptions.java
>         0,89 : gc/arguments/TestHeapFreeRatio.java
>         0,94 : gc/parallel/AdaptiveGCBoundary.java
>         0,97 : gc/arguments/TestSurvivorAlignmentInBytesOption.java
>         0,97 : gc/logging/TestGCId.java
>         1,01 : gc/logging/TestDeprecatedPrintFlags.java
>         1,03 : gc/TestCardTablePageCommits.java
>         1,08 : gc/arguments/TestInitialTenuringThreshold.java
>         1,10 : gc/metaspace/TestPerfCountersAndMemoryPools.java
>         1,21 : gc/metaspace/TestMetaspaceSizeFlags.java
>         1,26 : gc/arguments/TestUseCompressedOopsErgo.java
>         1,30 : gc/TestDisableExplicitGC.java
>         1,57 : gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java
>         1,62 : gc/whitebox/TestConcMarkCycleWB.java
>         1,71 : gc/serial/HeapChangeLogging.java
>         1,73 : gc/arguments/TestVerifyBeforeAndAfterGCFlags.java
>         1,86 : gc/metaspace/TestCapacityUntilGCWrapAround.java
>         1,88 : gc/metaspace/TestMetaspaceMemoryPool.java
>         1,91 : gc/TestSoftReferencesBehaviorOnOOME.java
>         2,06 : gc/TestSmallHeap.java
>         2,15 : gc/metaspace/G1AddMetaspaceDependency.java
>         2,15 : gc/arguments/TestParallelGCThreads.java
>         2,16 : gc/arguments/TestAlignmentToUseLargePages.java
>         2,18 : gc/arguments/TestDynMinHeapFreeRatio.java
>         2,18 : gc/TestSystemGC.java
>         2,35 : gc/arguments/TestDynMaxHeapFreeRatio.java
>         2,36 : gc/parallel/TestPrintGCDetailsVerbose.java
>         2,38 : gc/ergonomics/TestDynamicNumberOfGCThreads.java
>         2,40 : gc/TestObjectAlignment.java
>         2,53 : gc/parallel/TestDynShrinkHeap.java
>         2,56 : gc/cms/GuardShrinkWarning.java
>         2,59 : gc/arguments/TestSerialHeapSizeFlags.java
>         2,59 : gc/arguments/TestG1HeapSizeFlags.java
>         2,64 : gc/arguments/TestNewRatioFlag.java
>         2,64 : gc/arguments/TestParallelHeapSizeFlags.java
>         2,77 : gc/cms/TestBubbleUpRef.java
>         2,78 : gc/arguments/TestCMSHeapSizeFlags.java
>         3,60 : gc/arguments/TestObjectTenuringFlags.java
>         4,34 : gc/survivorAlignment/TestPromotionFromEdenToTenured.java
>         4,57 : gc/arguments/TestMinAndInitialSurvivorRatioFlags.java
>         4,64 : gc/survivorAlignment/TestAllocationInEden.java
>         4,84 : gc/TestBigObj.java
>         5,19 : gc/arguments/TestNewSizeFlags.java
>         5,19 : gc/arguments/TestMinInitialErgonomics.java
>         6,18 :
> gc/survivorAlignment/TestPromotionFromSurvivorToTenuredAfterFullGC.java
>         6,63 : gc/arguments/TestTargetSurvivorRatioFlag.java
>         6,63 : gc/CondCardMark/Basic.java
>         7,15 : gc/arguments/TestMaxNewSize.java
>         7,63 : gc/arguments/TestSurvivorRatioFlag.java
>        10,69 : gc/metaspace/TestMetaspacePerfCounters.java
>        14,45 : gc/cms/DisableResizePLAB.java
>        27,59 : gc/arguments/TestShrinkHeapInSteps.java
>        40,39 : gc/arguments/TestMaxMinHeapFreeRatioFlags.java
> SUMMARY:
>     Totat tests: 81
>     Totat time: 3m 59s
>


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