我在Jrockit的旧集合扫描切换期间遇到长时间暂停的问题，这使我的应用程序在几秒钟内没有响应
Jrockit版本： R28.3.12-8
配置：
JAVA_OPTS="-Xms10G -Xmx10G -Xns:2g -Xgc:pausetime -XpauseTarget:201
-XXgcTrigger=40 -Xgc:gencon -XXkeepAreaRatio:50 -XXcompactRatio:10
-XX:NurseryPartsLimit=0 -Xverbose:memory -Xverbose:memdbg -Xverbose:gcreport
-Xverbose:compaction -Xverbose:gcpause -Xverbosetimestamp"
日志：
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] GC reason: GC trigger reached.
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] 93025.657: OC started.
[alloc ][Sun Nov 12 20:17:49 2017][24155] [OC#197] Pending requests at 'Before OC' - Total: 0, TLAs: 0 (approx 0 bytes), objects: 0 (0 bytes). Max age: 0.
[compact][Sun Nov 12 20:17:49 2017][24155] [OC#197] Compaction reason: Normal.
[compact][Sun Nov 12 20:17:49 2017][24155] [OC#197] Compacting 409 of 4096 parts at index 3687. Compaction type is external. Exceptional: No.
[compact][Sun Nov 12 20:17:49 2017][24155] [OC#197] Compaction area start: 0x340180000, end: 0x380000000. Timeout: 80.400 ms.
[compact][Sun Nov 12 20:17:49 2017][24155] [OC#197] Compactset limit (per thread): 22611163 (dynamic), using matrixes.
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] Starting initial marking phase (OC1).
[nursery][Sun Nov 12 20:17:49 2017][24155] [OC#197] Young collection started. This YC is a part of OC#197 initial marking.
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] SemiRef phase WeakJNIHandles run in single threaded mode.
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] SemiRef phase ClassConstraints run in single threaded mode.
[nursery][Sun Nov 12 20:17:49 2017][24155] [OC#197] Next keeparea will start at 0x312f60260 and end at 0x358ad2cd0.
[alloc ][Sun Nov 12 20:17:49 2017][24155] [OC#197] Satisfied 0 object and 0 tla allocations. Pending requests went from 0 to 0.
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] Initial marking phase promoted 1164528 objects (70750KB).
[memory ][Sun Nov 12 20:17:49 2017][24155] [OC#197] Starting concurrent marking phase (OC2).
[memory ][Sun Nov 12 20:17:49 2017][24155] Adding 3 final handles from dying thread 'RMI RenewClean-[10.25.59.11:887'.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Concurrent mark phase lasted 4793.797 ms.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Starting precleaning phase (OC3).
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Precleaning phase lasted 53.837 ms.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Starting final marking phase (OC4).
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Young collection started. This YC is a part of OC#197 final marking.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] SemiRef phase WeakJNIHandles run in single threaded mode.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] SemiRef phase ClassConstraints run in single threaded mode.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] SemiRef phase FinalMemleak run in single threaded mode.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Next keeparea will start at 0x312f60260 and end at 0x358ad2cd0.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Final marking phase promoted 246414 objects (15380KB).
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Adding 34 temporary work packets to permanent pool, now 2423 packets.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Total mark time: 5512.803 ms.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Ending marking phase.
[memory ][Sun Nov 12 20:17:54 2017][24155] [OC#197] Starting concurrent sweeping phase.
[compact][Sun Nov 12 20:17:54 2017][24155] [OC#197] External compaction aborted due to timeout after 122.521959 ms at address 0x3522f7848.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Setting keepAreaMarkers[0] to 0x2cf0e6c80.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Setting keepAreaMarkers[1] to 0x305ba15d8.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Setting keepAreaMarkers[2] to 0x33a3ba318.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Next keeparea will start at 0x305ba15d8 and end at 0x33a3ba318.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Nursery size increased from 0KB to 1659304KB. Nursery list consists of 19491 parts.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Average part size: 85KB. Contraharmonic mean (CHM): 4259KB. CHM per part: 0KB. Normalized CHM: 0.002567.
[memory ][Sun Nov 12 20:17:54 2017][24155] Adding 3 final handles from dying thread 'RMI RenewClean-[10.25.59.11:887'.
[nursery][Sun Nov 12 20:19:21 2017][24155] [OC#197] Nursery size increased from 1659304KB to 2097155KB. Nursery list consists of 91212 parts.
[nursery][Sun Nov 12 20:19:21 2017][24155] [OC#197] Average part size: 23KB. Contraharmonic mean (CHM): 3426KB. CHM per part: 0KB. Normalized CHM: 0.001634.
[alloc ][Sun Nov 12 20:19:21 2017][24155] [OC#197] Satisfied 0 object and 0 tla allocations. Pending requests went from 0 to 0.
[nursery][Sun Nov 12 20:19:22 2017][24155] [OC#197] Nursery size remains at 2097155KB. Nursery list consists of 91212 parts.
[nursery][Sun Nov 12 20:19:22 2017][24155] [OC#197] Average part size: 23KB. Contraharmonic mean (CHM): 3426KB. CHM per part: 0KB. Normalized CHM: 0.001634.
[memory ][Sun Nov 12 20:19:22 2017][24155] [OC#197] Total sweep time: 87871.212 ms.
[memory ][Sun Nov 12 20:19:22 2017][24155] [OC#197] Ending sweeping phase.
[nursery][Sun Nov 12 20:19:22 2017][24155] [OC#197] Nursery size remains at 2097155KB. Nursery list consists of 91212 parts.
[nursery][Sun Nov 12 20:19:22 2017][24155] [OC#197] Average part size: 23KB. Contraharmonic mean (CHM): 3426KB. CHM per part: 0KB. Normalized CHM: 0.001634.
[alloc ][Sun Nov 12 20:19:22 2017][24155] [OC#197] Satisfied 0 object and 0 tla allocations. Pending requests went from 0 to 0.
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Average compact time ratio (move phase/total time): 1.000000.
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Compaction was aborted at 0x3522f7848, Compaction reached time limit
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Compaction time, total: 125.402 ms (target 122.493 ms).
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Compaction moved 126799 objects and left 1 objects. Total moved size 7486840B.
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Compaction added 303519856B of free memory in 2 parts.
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Found 377865 references.
[compact][Sun Nov 12 20:19:22 2017][24155] [OC#197] Updated 136086 references.
[memory ][Sun Nov 12 20:19:22 2017][24155] [OC#197] GC Trigger is locked at 40.0%.
[alloc ][Sun Nov 12 20:19:22 2017][24155] [OC#197] Pending requests at 'After OC' - Total: 0, TLAs: 0 (approx 0 bytes), objects: 0 (0 bytes). Max age: 0.
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [---] 97372.976 ms (93025.657000-93123.030000) OC
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [con] 0.028 ms (93025.657000-93025.657000) OC:PreGC
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [pau] 589.431 ms (93025.657000-93026.247000) OC:Initial
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [con] 4847.240 ms (93026.247000-93031.094000) OC:ConcurrentMark
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [pau] 208.725 ms (93031.094000-93031.303000) OC:Main
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [con] 287.101 ms (93031.303000-93031.590000) OC:ConcurrentSweep1
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [pau] 86757.084 ms (93031.591000-93118.348000) OC:SweepSwitch
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [con] 473.838 ms (93118.348000-93118.822000) OC:ConcurrentSweep2
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [pau] 21.112 ms (93119.029000-93119.050000) OC:Cleanup
[gcpause][Sun Nov 12 20:19:26 2017][24155] [OC#197] [con] 3979.846 ms (93119.050000-93123.030000) OC:PostGC
[memory ][Sun Nov 12 20:19:26 2017][24155] [OC#197] Page faults before OC: 13, page faults after OC: 13, pages in heap: 2621440.
[memory ][Sun Nov 12 20:19:26 2017][24155] [OC#197] Nursery size after OC: 2097155KB. (Free: 1729809KB Parts: 91212)
[memory ][Sun Nov 12 20:19:26 2017][24155] [OC#197] 93025.657-93123.030: OC 6132697KB->3446883KB (10485760KB), 97.373 s, sum of pauses 87576.352 ms, longest pause 86757.084 ms.
我的应用程序通常需要不到1秒的时间来完成一个旧的集合，我可以在正常的旧集合和这次采用旧集合之间看到的唯一区别是，在正常集合期间创建托儿所时，它在第一次创建时被赋予2GB，而在长期运行中，一个托儿所分配2GB是两部分
正常：
[nursery][Sun Nov 12 19:54:50 2017][24155] [OC#196] Nursery size increased from 0KB to 2097152KB. Nursery list consists of 21544 parts.
[nursery][Sun Nov 12 19:54:50 2017][24155] [OC#196] Average part size: 97KB. Contraharmonic mean (CHM): 11149KB. CHM per part: 1KB. Normalized CHM: 0.005316.
[memory ][Sun Nov 12 19:54:50 2017][24155] Adding 3 final handles from dying thread 'RMI RenewClean-[10.25.59.11:887'.
[nursery][Sun Nov 12 19:54:50 2017][24155] [OC#196] Nursery size remains at 2097152KB. Nursery list consists of 21544 parts.
长跑：
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Nursery size increased from 0KB to 1659304KB. Nursery list consists of 19491 parts.
[nursery][Sun Nov 12 20:17:54 2017][24155] [OC#197] Average part size: 85KB. Contraharmonic mean (CHM): 4259KB. CHM per part: 0KB. Normalized CHM: 0.002567.
[memory ][Sun Nov 12 20:17:54 2017][24155] Adding 3 final handles from dying thread 'RMI RenewClean-[10.25.59.11:887'.
[nursery][Sun Nov 12 20:19:21 2017][24155] [OC#197] Nursery size increased from 1659304KB to 2097155KB. Nursery list consists of 91212 parts.
提前感谢您提供任何帮助