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Klaus Post ddea0bdf11 Concurrent CSV parsing and reduce S3 select allocations (#8200) ... ``` CSV parsing, BEFORE: BenchmarkReaderBasic-12 2842 407533 ns/op 397860 B/op 957 allocs/op BenchmarkReaderReplace-12 2718 429914 ns/op 397844 B/op 957 allocs/op BenchmarkReaderReplaceTwo-12 2718 435556 ns/op 397855 B/op 957 allocs/op BenchmarkAggregateCount_100K-12 171 6798974 ns/op 16667102 B/op 308077 allocs/op BenchmarkAggregateCount_1M-12 19 65657411 ns/op 168057743 B/op 3146610 allocs/op BenchmarkSelectAll_10M-12 1 20882119900 ns/op 2758799896 B/op 41978762 allocs/op CSV parsing, AFTER: BenchmarkReaderBasic-12 3721 312549 ns/op 101920 B/op 338 allocs/op BenchmarkReaderReplace-12 3776 318810 ns/op 101993 B/op 340 allocs/op BenchmarkReaderReplaceTwo-12 3610 330967 ns/op 102012 B/op 341 allocs/op BenchmarkAggregateCount_100K-12 295 4149588 ns/op 3553623 B/op 103261 allocs/op BenchmarkAggregateCount_1M-12 30 37746503 ns/op 33827931 B/op 1049435 allocs/op BenchmarkSelectAll_10M-12 1 17608495800 ns/op 1416504040 B/op 21007082 allocs/op ~ benchcmp old.txt new.txt benchmark old ns/op new ns/op delta BenchmarkReaderBasic-12 407533 312549 -23.31% BenchmarkReaderReplace-12 429914 318810 -25.84% BenchmarkReaderReplaceTwo-12 435556 330967 -24.01% BenchmarkAggregateCount_100K-12 6798974 4149588 -38.97% BenchmarkAggregateCount_1M-12 65657411 37746503 -42.51% BenchmarkSelectAll_10M-12 20882119900 17608495800 -15.68% benchmark old allocs new allocs delta BenchmarkReaderBasic-12 957 338 -64.68% BenchmarkReaderReplace-12 957 340 -64.47% BenchmarkReaderReplaceTwo-12 957 341 -64.37% BenchmarkAggregateCount_100K-12 308077 103261 -66.48% BenchmarkAggregateCount_1M-12 3146610 1049435 -66.65% BenchmarkSelectAll_10M-12 41978762 21007082 -49.96% benchmark old bytes new bytes delta BenchmarkReaderBasic-12 397860 101920 -74.38% BenchmarkReaderReplace-12 397844 101993 -74.36% BenchmarkReaderReplaceTwo-12 397855 102012 -74.36% BenchmarkAggregateCount_100K-12 16667102 3553623 -78.68% BenchmarkAggregateCount_1M-12 168057743 33827931 -79.87% BenchmarkSelectAll_10M-12 2758799896 1416504040 -48.66% ``` ``` BenchmarkReaderHuge/97K-12 2200 540840 ns/op 184.32 MB/s 1604450 B/op 687 allocs/op BenchmarkReaderHuge/194K-12 1522 752257 ns/op 265.04 MB/s 2143135 B/op 1335 allocs/op BenchmarkReaderHuge/389K-12 1190 947858 ns/op 420.69 MB/s 3221831 B/op 2630 allocs/op BenchmarkReaderHuge/778K-12 806 1472486 ns/op 541.61 MB/s 5201856 B/op 5187 allocs/op BenchmarkReaderHuge/1557K-12 426 2575269 ns/op 619.36 MB/s 9101330 B/op 10233 allocs/op BenchmarkReaderHuge/3115K-12 286 4034656 ns/op 790.66 MB/s 12397968 B/op 16099 allocs/op BenchmarkReaderHuge/6230K-12 172 6830563 ns/op 934.05 MB/s 16008416 B/op 26844 allocs/op BenchmarkReaderHuge/12461K-12 100 11409467 ns/op 1118.39 MB/s 22655163 B/op 48107 allocs/op BenchmarkReaderHuge/24922K-12 66 19780395 ns/op 1290.19 MB/s 35158559 B/op 90216 allocs/op BenchmarkReaderHuge/49844K-12 34 37282559 ns/op 1369.03 MB/s 60528624 B/op 174497 allocs/op ```		5 years ago
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