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# 1brc in go
It uses Docker with BuildKit plugin to build and [export binary](https://docs.docker.com/engine/reference/commandline/build/#output) binary,
see [prepare_AlexanderYastrebov.sh](../../../../prepare_AlexanderYastrebov.sh)
and [calculate_average_AlexanderYastrebov.sh](../../../../calculate_average_AlexanderYastrebov.sh).
Demo:
```sh
$ ./test.sh AlexanderYastrebov
[+] Building 0.2s (9/9) FINISHED
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 172B 0.0s
=> [internal] load metadata for docker.io/library/golang:latest 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 145B 0.0s
=> [build-stage 1/3] FROM docker.io/library/golang 0.0s
=> CACHED [build-stage 2/3] COPY . src/ 0.0s
=> CACHED [build-stage 3/3] RUN cd src && go build . 0.0s
=> CACHED [export-stage 1/1] COPY --from=build-stage /go/src/1brc / 0.0s
=> exporting to client directory 0.1s
=> => copying files 2.03MB 0.0s
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-10000-unique-keys.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-10.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-1.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-20.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-2.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-3.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-boundaries.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-complex-utf8.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-dot.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-shortest.txt
Validating calculate_average_AlexanderYastrebov.sh -- src/test/resources/samples/measurements-short.txt
# Run once to setup the benchmark
# ./create_measurements.sh 1000000000
# mv measurements.txt measurements_1B.txt
# ln -s measurements_1B.txt measurements.txt
# ./calculate_average_baseline.sh > out_expected.txt
$ wc -l measurements_1B.txt
1000000000 measurements_1B.txt
$ ./evaluate2.sh AlexanderYastrebov royvanrijn
... 0.0s
Benchmark 1: ./calculate_average_AlexanderYastrebov.sh 2>&1
Time (mean ± σ): 16.786 s ± 0.545 s [User: 56.030 s, System: 10.068 s]
Range (min … max): 15.918 s … 17.309 s 5 runs
...
Benchmark 1: ./calculate_average_royvanrijn.sh 2>&1
Time (mean ± σ): 16.731 s ± 0.190 s [User: 56.485 s, System: 10.279 s]
Range (min … max): 16.490 s … 16.951 s 5 runs
Summary
AlexanderYastrebov: trimmed mean 16.901712789513336, raw times 16.69836470718,17.30911065018,16.83413600418,15.91787706218,17.17263765718
royvanrijn: trimmed mean 16.738037123633333, raw times 16.4900939703,16.9513459953,16.5794539913,16.8297746273,16.8048827523
```
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