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ExcelReaderBenchmarks.md

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Excel Data Reader Benchmarks

These benchmarks measure reading a 65k row (max .xls row count) Excel file, and accessing each value as "strongly-typed" as the library allows.

Excel .xlsx Benchmarks

The Baseline in this group, measure the time taken to unzip the Sheet1.xml and using XmlReader.Read to process every node. It represents the minimal work that must be done assuming those classes are used for processing.

Method Mean Error Ratio Allocated Alloc Ratio
Baseline 252.8 ms 32.44 ms 1.00 243.42 KB 1.00
SylvanXlsx 334.7 ms 7.80 ms 1.33 660.85 KB 2.71
XlsxHelperXlsx 442.2 ms 3.08 ms 1.75 93301.87 KB 383.29
AsposeXlsx 541.6 ms 29.09 ms 2.15 209750.95 KB 861.68
MiniExcelXlsx 1,016.8 ms 50.98 ms 4.01 729374.68 KB 2,996.34
ExcelDataReaderXlsx 1,063.1 ms 19.09 ms 4.21 441878.48 KB 1,815.28
EPPlusXlsx 1,074.5 ms 24.68 ms 4.25 564392.8 KB 2,318.58
AceOleDbXls 1,227.5 ms 105.88 ms 4.89 27033.4 KB 111.06
FastExcelXlsx 2,588.3 ms 66.90 ms 10.25 1190024.77 KB 4,888.73
OpenXmlXlsx 2,793.1 ms 92.67 ms 11.05 502456.73 KB 2,064.14
ClosedXmlXlsx 2,917.8 ms 226.07 ms 11.62 1190520.72 KB 4,890.77
NpoiXlsx 3,557.8 ms 51.56 ms 14.09 1564691.02 KB 6,427.90

Excel .xlsb Benchmarks

Method Mean Error Allocated
SylvanXlsb 49.98 ms 0.885 ms 355.38 KB
AsposeXlsb 413.68 ms 28.096 ms 247781.34 KB
AceOleDbXlsb 5,706.38 ms 181.312 ms 27033.4 KB
ExcelDataReaderXlsb 15,912.64 ms 681.043 ms 193105.45 KB

Excel .xls Benchmarks

Method Mean Error Allocated
SylvanSchemaXls 40.32 ms 0.368 ms 523.72 KB
SylvanStringXls 110.03 ms 0.761 ms 23900.5 KB
ExcelDataReaderXls 251.91 ms 8.890 ms 323458.07 KB
AsposeXls 368.56 ms 3.223 ms 227914.99 KB
AceOleDbXls 407.76 ms 6.031 ms 27033.4 KB
NpoiXls 2,575.05 ms 113.102 ms 2476504.72 KB