stack created HBASE-20236:
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Summary: [locking] Write-time worst offenders
Key: HBASE-20236
URL: https://issues.apache.org/jira/browse/HBASE-20236
Project: HBase
Issue Type: Sub-task
Components: Performance
Affects Versions: 2.0.0-beta-2
Reporter: stack
Messing w/ my new toy, here are worst offenders locking; they must be bad if
they show up in this sampling profiler:
{code}
7 Total: 769321884622 (99.24%) samples: 2965
8 [ 0] java.util.concurrent.Semaphore$NonfairSync
9 [ 1] sun.misc.Unsafe.park
10 [ 2] java.util.concurrent.locks.LockSupport.park
11 [ 3]
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt
12 [ 4]
java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly
13 [ 5]
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly
14 [ 6] java.util.concurrent.Semaphore.acquire
15 [ 7]
org.apache.hadoop.hbase.ipc.FastPathBalancedQueueRpcExecutor$FastPathHandler.getCallRunner
16 [ 8] org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run
17
18 Total: 4284274263 (0.55%) samples: 23543
19 [ 0] org.apache.hadoop.hbase.regionserver.MutableSegment
20 [ 1] org.apache.hadoop.hbase.ByteBufferKeyValue.getSequenceId
21 [ 2] org.apache.hadoop.hbase.regionserver.Segment.updateMetaInfo
22 [ 3] org.apache.hadoop.hbase.regionserver.Segment.internalAdd
23 [ 4] org.apache.hadoop.hbase.regionserver.MutableSegment.add
24 [ 5] org.apache.hadoop.hbase.regionserver.AbstractMemStore.internalAdd
25 [ 6] org.apache.hadoop.hbase.regionserver.AbstractMemStore.add
26 [ 7] org.apache.hadoop.hbase.regionserver.AbstractMemStore.add
27 [ 8] org.apache.hadoop.hbase.regionserver.HStore.add
28 [ 9] org.apache.hadoop.hbase.regionserver.HRegion.applyToMemStore
29 [10] org.apache.hadoop.hbase.regionserver.HRegion.access$600
30 [11]
org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation.applyFamilyMapToMemStore
31 [12]
org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation.lambda$writeMiniBatchOperationsToMemStore$0
32 [13]
org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation$$Lambda$442.1445825895.visit
33 [14]
org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation.visitBatchOperations
34 [15]
org.apache.hadoop.hbase.regionserver.HRegion$BatchOperation.writeMiniBatchOperationsToMemStore
35 [16]
org.apache.hadoop.hbase.regionserver.HRegion$MutationBatchOperation.writeMiniBatchOperationsToMemStore
36 [17] org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutate
37 [18] org.apache.hadoop.hbase.regionserver.HRegion.batchMutate
38 [19] org.apache.hadoop.hbase.regionserver.HRegion.batchMutate
39 [20] org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp
40 [21] org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicBatchOp
41 [22]
org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation
42 [23] org.apache.hadoop.hbase.regionserver.RSRpcServices.multi
43 [24]
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod
44 [25] org.apache.hadoop.hbase.ipc.RpcServer.call
45 [26] org.apache.hadoop.hbase.ipc.CallRunner.run
46 [27] org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run
47 [28] org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run
48
49 Total: 717708856 (0.09%) samples: 214
50 [ 0] java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync
51 [ 1] sun.misc.Unsafe.park
52 [ 2] java.util.concurrent.locks.LockSupport.park
53 [ 3]
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt
54 [ 4] java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued
55 [ 5] java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire
56 [ 6] java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock
57 [ 7] org.apache.hadoop.hbase.regionserver.HRegion.blockUpdates
58 [ 8]
org.apache.hadoop.hbase.regionserver.RegionServicesForStores.blockUpdates
59 [ 9] org.apache.hadoop.hbase.regionserver.CompactingMemStore.flushInMemory
60 [10]
org.apache.hadoop.hbase.regionserver.CompactingMemStore$InMemoryFlushRunnable.run
61 [11] java.util.concurrent.ThreadPoolExecutor.runWorker
62 [12] java.util.concurrent.ThreadPoolExecutor$Worker.run
63 [13] java.lang.Thread.run
...
{code}
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