Instance 1f1620b2-c78e-11ec-9dc6-0242935db348 (host=TNetworkAddress(hostname:172.16.14.174, port:9061)):(Active: 5s654ms[5654073484ns], % non-child: 0.00%)
- AverageThreadTokens: 4607182418800017400.00
- MemoryLimit: 16.00 GB
- PeakMemoryUsage: 47.25 MB
- RowsProduced: 4
DataStreamSender (dst_id=3, dst_fragments=[1f1620b2c78e11ec-9dc60242935db34a, 1f1620b2c78e11ec-9dc60242935db34b, 1f1620b2c78e11ec-9dc60242935db34c, 1f1620b2c78e11ec-9dc60242935db34d]):(Active: 834.203us[834203ns], % non-child: 0.01%)
- PartType: HASH_PARTITIONED
- BytesSent: 408.00 B
- CompressTime: 10.82us
- IgnoreRows: 0
- OverallThroughput: 477.6259765625 KB/sec
- SendRequestTime: 295.769us
- SerializeBatchTime: 22.496us
- ShuffleDispatchTime: 42.251us
- ShuffleHashTime: 5.47us
- UncompressedBytes: 680.00 B
- WaitResponseTime: 367.610us
AGGREGATION_NODE (id=2):(Active: 5s653ms[5653354825ns], % non-child: 64.19%)
- GroupingKeys: 27: l_returnflag, 28: l_linestatus
- AggregateFunctions: sum(6: l_quantity), sum(7: l_extendedprice), sum(17: expr), sum(18: expr), avg(6: l_quantity), avg(7: l_extendedprice), avg(8: l_discount), count()
- AggComputeTime: 3s970ms
- ExprComputeTime: 20.949ms
- ExprReleaseTime: 39.275ms
- GetResultsTime: 60.323us
- HashTableSize: 4
- InputRowCount: 149.985311M (149985311)
- PassThroughRowCount: 0
- PeakMemoryUsage: 4.15 KB
- ResultAggAppendTime: 5.253us
- ResultGroupByAppendTime: 1.332us
- ResultIteratorTime: 41.76us
- RowsReturned: 4
- RowsReturnedRate: 0
- StreamingTime: 0ns
PROJECT_NODE (id=1):(Active: 1s603ms[1603654299ns], % non-child: 23.70%)
- CommonSubExprComputeTime: 1.2ms
- ExprComputeTime: 1s396ms
- PeakMemoryUsage: 0.00
- RowsReturned: 149.985311M (149985311)
- RowsReturnedRate: 93.527209M /sec
OLAP_SCAN_NODE (id=0)
Active: 108.323ms[108323340ns], % non-child: 0.00%)
- Table: lineitem
- Rollup: lineitem
- Predicates: 1: l_shipdate <= ‘1998-12-01’
- BytesRead: 5.03 GB
- IOTaskCount : 24
- NumDiskAccess: 0
- PeakMemoryUsage: 0.00
- RowsRead: 149.985311M (149985311)
- RowsReturned: 149.985311M (149985311)
- RowsReturnedRate: 1.384607518B /sec
- ScanConcurrency : 24
- ScanTime: 5s224ms
- ScannerThreadsInvoluntaryContextSwitches: 0
- ScannerThreadsTotalWallClockTime: 0ns
- MaterializeTupleTime(): 0ns
- ScannerThreadsSysTime: 0ns
- ScannerThreadsUserTime: 0ns
- ScannerThreadsVoluntaryContextSwitches: 0
- TabletCount : 24
- TotalRawReadTime(*): 0ns
- TotalReadThroughput: 822.6372356414795 MB/sec
SCAN:(Active: 5s164ms[5164111175ns], % non-child: 81.86%)
- CachedPagesNum: 0
- CompressedBytesRead: 811.96 MB
- CreateSegmentIter: 3.412ms
- DictDecode: 305.651ms
- IOTime: 345.176ms
- LateMaterialize: 30.90ms
- PushdownPredicates: 1
- RawRowsRead: 149.985311M (149985311)
- ReadPagesNum: 100.845K (100845)
- SegmentInit: 13.497ms
- BitmapIndexFilter: 0ns
- BitmapIndexFilterRows: 0
- BloomFilterFilterRows: 0
- SegmentZoneMapFilterRows: 0
- ShortKeyFilterRows: 0
- ZoneMapIndexFilterRows: 0
- SegmentRead: 4s782ms
- BlockFetch: 1s24ms
- BlockFetchCount: 36.632K (36632)
- BlockSeek: 3s692ms
- BlockSeekCount: 36.632K (36632)
- ChunkCopy: 859.453us
- DecompressT: 48.142ms
- DelVecFilterRows: 0
- IndexLoad: 0ns
- PredFilter: 28.928ms
- PredFilterRows: 0
- RowsetsReadCount: 25
- SegmentsReadCount: 25
- TotalColumnsDataPageCount: 100.795K (100795)
- UncompressedBytesRead: 818.44 MB
这个例子中ScanTime: 5s224ms，Active: 108.323ms[108323340ns]就很乱
scantime是多并行度汇总的时间
串行节点和并行节点如何区分？节点时间如何累加？