THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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压缩方式 | GZIP | LZ4 | SNAPPY | UNCOMPRESSED |
dataset | synthetic | synthetic | synthetic | synthetic |
pagePointNum(ppn) | 10000 | 10000 | 10000 | 10000 |
numOfPagesInChunk(pic) | 1000 | 1000 | 1000 | 1000 |
chunksWritten(cw) | 10 | 10 | 10 | 10 |
timeEncoding(te) | TS_2DIFF | TS_2DIFF | TS_2DIFF | TS_2DIFF |
valueDataType(vt) | INT64 | INT64 | INT64 | INT64 |
valueEncoding(ve) | PLAIN | PLAIN | PLAIN | PLAIN |
compression(co) | GZIP | LZ4 | SNAPPY | UNCOMPRESSED |
totalPointNum | 100000000 | 100000000 | 100000000 | 100000000 |
tsfileSize(MB) | 767.1312866 | 770.8444319 | 767.9423904 | 781.4226151 |
chunkDataSize_stats_mean(MB) | 76.71300761 | 77.08436436 | 76.7941264 | 78.14216614 |
compressedPageSize_stats_mean(B) | 80375.41867 | 80764.81444 | 80460.47789 | 81874 |
uncompressedPageSize_stats_mean(B) | 81874 | 81874 | 81874 | 81874 |
timeBufferSize_stats_mean(B) | 1872 | 1872 | 1872 | 1872 |
valueBufferSize_stats_mean(B) | 80000 | 80000 | 80000 | 80000 |
[2] category: (A)get ChunkStatistic->(B)load on-disk Chunk->(C)get PageStatistics->(D)load in-memory PageData | ||||
[Avg&Per] (A)get_chunkMetadatas | 101654.7566 us - 0.9318259204986696% | 86735.1136 us - 1.1689451651044902% | 82918.49919999999 us - 1.0656107165107132% | 93896.1409 us - 1.2531889263513831% |
[Avg&Per] (B)load_on_disk_chunk | 5949593.8917000005 us - 54.53739687304131% | 4849630.197000001 us - 65.35936296194448% | 5086618.179 us - 65.36966894765757% | 4851386.484999999 us - 64.74924062031137% |
[Avg&Per] (C)get_pageHeader | 6613.381399999991 us - 0.060622054656159316% | 7120.158900000014 us - 0.09595969816001626% | 7692.346500000014 us - 0.09885667184764595% | 7605.696300000007 us - 0.10150975630087579% |
[Avg&Per] (D_1)decompress_pageData | 2859428.0031000106 us - 26.211160404158996% | 521804.2723000004 us - 7.032452670194604% | 605202.8143000009 us - 7.777644443672276% | 498170.42259999976 us - 6.648853201570805% |
[Avg&Per] (D_2)decode_pageData | 1991910.319299996 us - 18.25899474764487% | 1954657.4198999994 us - 26.343279504596413% | 1998880.5966999987 us - 25.68821922031179% | 2041517.9070999995 us - 27.247207495465567% |
[3] D_1 compare each step inside | ||||
[Avg&Per] (D-1)7_1_data_ByteBuffer_to_ByteArray(us) | 65952.37819999998 us - 2.5136549346918415% | 108809.34350000018 us - 59.6896105506002% | 108132.35939999981 us - 43.622622294156905% | 110765.11740000003 us - 63.813731447511664% |
[Avg&Per] (D-1)7_2_data_decompress_PageDataByteArray(us) | 2554687.926599999 us - 97.36728361519128% | 68904.38600000006 us - 37.79892271446546% | 135345.91170000008 us - 54.601079805416944% | 57547.215800000035 us - 33.15396273496119% |
[Avg&Per] (D-1)7_3_data_ByteArray_to_ByteBuffer(us) | 811.8335000000624 us - 0.03094155721322126% | 1239.949800000022 us - 0.680200047933345% | 1184.7460000000272 us - 0.47794876167766753% | 1229.1439000000355 us - 0.7081314098345313% |
[Avg&Per] (D-1)7_4_data_split_time_value_Buffer(us) | 2312.0582000000422 us - 0.08811989290364733% | 3338.2513999999974 us - 1.8312666870009688% | 3218.3657999999955 us - 1.29834913874849% | 4034.201500000018 us - 2.3241744076926314% |
[3] D_2 compare each step inside | ||||
[Avg&Per] (D-2)8_1_createBatchData(us) | 5384.7852 us - 0.053292019060348375% | 5848.7599 us - 0.05759123169122766% | 5913.4963 us - 0.058362326692940975% | 6019.3023 us - 0.05943520403215091% |
[Avg&Per] (D-2)8_2_timeDecoder_hasNext(us) | 1859842.2956 us - 18.406444711361424% | 1862234.7849 us - 18.336946086748988% | 1864092.3926 us - 18.397368271414525% | 1857778.6739 us - 18.343895858133802% |
[Avg&Per] (D-2)8_3_timeDecoder_readLong(us) | 2074757.7936 us - 20.533415498567617% | 2084700.4377 us - 20.527508047369906% | 2063043.8916 us - 20.360888969091857% | 2069930.4964 us - 20.43870456313607% |
[Avg&Per] (D-2)8_4_valueDecoder_read(us) | 1876012.952 us - 18.56648209392724% | 1881471.5433999998 us - 18.526365490982297% | 1877809.2412 us - 18.532744562964893% | 1876843.1276 us - 18.53214021585961% |
[Avg&Per] (D-2)8_5_checkValueSatisfyOrNot(us) | 1780379.6374 us - 17.620020492363725% | 1780782.3133 us - 17.534904586680103% | 1781949.2049 us - 17.586668929952697% | 1780599.5789 us - 17.5818216126948% |
[Avg&Per] (D-2)8_6_putIntoBatchData(us) | 2507922.0072 us - 24.82034518471963% | 2540605.1784 us - 25.016684556527476% | 2539577.912 us - 25.063966939883077% | 2536332.2055 us - 25.044002546143567% |
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压缩方式 | GZIP | LZ4 | SNAPPY | UNCOMPRESSED |
dataset | /disk/rl/zc_data/ZT11529.csv | /disk/rl/zc_data/ZT11529.csv | /disk/rl/zc_data/ZT11529.csv | /disk/rl/zc_data/ZT11529.csv |
pagePointNum(ppn) | 10000 | 10000 | 10000 | 10000 |
numOfPagesInChunk(pic) | 100 | 100 | 100 | 100 |
chunksWritten(cw) | 13 | 13 | 13 | 13 |
timeEncoding(te) | TS_2DIFF | TS_2DIFF | TS_2DIFF | TS_2DIFF |
valueDataType(vt) | DOUBLE | DOUBLE | DOUBLE | DOUBLE |
valueEncoding(ve) | GORILLA | GORILLA | GORILLA | GORILLA |
compression(co) | GZIP | LZ4 | SNAPPY | UNCOMPRESSED |
totalPointNum | 12780287 | 12780287 | 12780287 | 12780287 |
tsfileSize(MB) | 19.34862614 | 23.77741051 | 23.15641212 | 36.30773735 |
chunkDataSize_stats_mean(MB) | 1.515139659 | 1.86007007 | 1.813184341 | 2.837062438 |
compressedPageSize_stats_mean(B) | 15824.16667 | 19440.275 | 18948.69 | 29684.7575 |
uncompressedPageSize_stats_mean(B) | 29684.7575 | 29684.7575 | 29684.7575 | 29684.7575 |
timeBufferSize_stats_mean(B) | 11461.4625 | 11461.4625 | 11461.4625 | 11461.4625 |
valueBufferSize_stats_mean(B) | 18221.26833 | 18221.26833 | 18221.26833 | 18221.26833 |
[2] category: (A)get ChunkStatistic->(B)load on-disk Chunk->(C)get PageStatistics->(D)load in-memory PageData | ||||
[Avg&Per] (A)get_chunkMetadatas | 87316.85010000001 us - 8.19883087518919% | 100289.6416 us - 12.59103802007131% | 89466.6045 us - 11.199530364576052% | 88760.777 us - 10.335699109318087% |
[Avg&Per] (B)load_on_disk_chunk | 160699.6025 us - 15.089285299443361% | 176784.88239999997 us - 22.19476647997349% | 105802.9384 us - 13.244531050378352% | 191518.85280000002 us - 22.301305860612082% |
[Avg&Per] (C)get_pageHeader | 2436.5129999999995 us - 0.22878239411203669% | 2198.3668000000007 us - 0.27599779517870476% | 2319.9517000000005 us - 0.29041416798711567% | 3134.228800000001 us - 0.3649635223062446% |
[Avg&Per] (D_1)decompress_pageData | 356587.5454999999 us - 33.482666568996265% | 31158.160799999983 us - 3.911805656191469% | 115629.7179 us - 14.474658381255693% | 29640.983400000016 us - 3.4515277590088287% |
[Avg&Per] (D_2)decode_pageData | 457950.96670000016 us - 43.000434862259155% | 486085.0215000002 us - 61.02639204858503% | 485623.25309999986 us - 60.790866035802786% | 545723.8052999998 us - 63.54650374875476% |
[3] D_1 compare each step inside | ||||
[Avg&Per] (D-1)7_1_data_ByteBuffer_to_ByteArray(us) | 1269.7615999999996 us - 0.36377892330196115% | 1808.5776999999991 us - 7.207505165727991% | 1687.9916000000003 us - 1.412377327892232% | 3197.6313 us - 41.86667970732365% |
[Avg&Per] (D-1)7_2_data_decompress_PageDataByteArray(us) | 345856.23130000004 us - 99.08569249502276% | 21247.39440000001 us - 84.67466169480036% | 116100.69619999993 us - 97.14384305311928% | 2432.4552000000012 us - 31.84820675254647% |
[Avg&Per] (D-1)7_3_data_ByteArray_to_ByteBuffer(us) | 374.18470000000025 us - 0.10720162531460037% | 442.10720000000003 us - 1.761876157051776% | 424.26030000000026 us - 0.35498732863644405% | 421.1930000000002 us - 5.51469221169019% |
[Avg&Per] (D-1)7_4_data_split_time_value_Buffer(us) | 1547.4220999999993 us - 0.443326956360674% | 1594.8989000000004 us - 6.355956982419887% | 1301.2614999999998 us - 1.0887922903520593% | 1586.372500000001 us - 20.770421328439692% |
[3] D_2 compare each step inside | ||||
[Avg&Per] (D-2)8_1_createBatchData(us) | 3430.8672 us - 0.22855030377902266% | 4174.8958 us - 0.275155541260775% | 3438.1465 us - 0.22874736939899784% | 3730.6205 us - 0.24721094086707432% |
[Avg&Per] (D-2)8_2_timeDecoder_hasNext(us) | 234016.77980000002 us - 15.589238228946503% | 236135.9462 us - 15.56305048087338% | 235278.4135 us - 15.65358490817499% | 234469.6457 us - 15.537217392727715% |
[Avg&Per] (D-2)8_3_timeDecoder_readLong(us) | 357893.9434 us - 23.841426880277478% | 360253.1425 us - 23.743262865502565% | 358341.1524 us - 23.84121675993312% | 363063.0738 us - 24.058508247673558% |
[Avg&Per] (D-2)8_4_valueDecoder_read(us) | 353821.6809 us - 23.570149451806063% | 359477.8899 us - 23.692168165422427% | 356440.4841 us - 23.714761161335133% | 355773.1939 us - 23.5754416723178% |
[Avg&Per] (D-2)8_5_checkValueSatisfyOrNot(us) | 223758.3096 us - 14.905861011513531% | 224938.2721 us - 14.825043539994219% | 224282.1638 us - 14.921980483485841% | 226053.6587 us - 14.979528915812129% |
[Avg&Per] (D-2)8_6_putIntoBatchData(us) | 328221.5562 us - 21.864774123677403% | 332305.597 us - 21.90131940694663% | 325251.7878 us - 21.639709317671908% | 325993.7043 us - 21.602092830601723% |
- 相对其它压缩方法,GZIP的压缩率最高,同时它的D-1解压缩步骤耗时占比也更高。
- 真实数据集的压缩率高,磁盘数据量少,
- 真实数据集的压缩率高,D-1步骤内部的主要耗时瓶颈是子步骤7_2_data_decompress_PageDataByteArray(us)。
- 人工数据实验里发现另一个子步骤7_1_data_ByteBuffer_to_ByteArray(us)的占比也高,其主要因为人工数据实验里数据压缩率很低,从而子步骤7_2_data_decompress_PageDataByteArray(us)耗时少,从而相对来说7_1_data_ByteBuffer_to_ByteArray(us)占比高了。
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