README.md

Benchmarks

These benchmarks are auto generated using ./benchmark/run.sh.

brew install hyperfine
pip install matplotlib
./benchmark/run.sh

I have put together what I believe to be equivalent commands in dasel/jq/yq.

If you have any feedback or wish to add new benchmarks please submit a PR.

Benchmarks

Root Object

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 -f benchmark/data.json	6.6 ± 0.2	6.1	7.2	1.00
dasel -f benchmark/data.json	8.7 ± 0.5	8.0	10.3	1.33 ± 0.09
jq '.' benchmark/data.json	28.1 ± 0.7	27.0	31.5	4.28 ± 0.19
yq --yaml-output '.' benchmark/data.yaml	127.9 ± 3.1	124.5	151.6	19.50 ± 0.84

Top level property

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 -f benchmark/data.json 'id'	6.6 ± 0.2	6.1	7.4	1.00
dasel -f benchmark/data.json '.id'	8.3 ± 0.3	7.8	9.7	1.27 ± 0.06
jq '.id' benchmark/data.json	28.2 ± 0.9	27.1	31.5	4.31 ± 0.21
yq --yaml-output '.id' benchmark/data.yaml	128.4 ± 10.1	124.4	211.7	19.59 ± 1.71

Nested property

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 -f benchmark/data.json 'user.name.first'	6.5 ± 0.2	6.1	7.3	1.00
dasel -f benchmark/data.json '.user.name.first'	8.3 ± 0.3	7.9	9.9	1.28 ± 0.07
jq '.user.name.first' benchmark/data.json	28.2 ± 0.9	27.0	32.9	4.34 ± 0.22
yq --yaml-output '.user.name.first' benchmark/data.yaml	126.7 ± 2.1	124.5	138.2	19.52 ± 0.81

Array index

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 -f benchmark/data.json 'favouriteNumbers.[1]'	6.5 ± 0.2	6.0	7.5	1.00
dasel -f benchmark/data.json '.favouriteNumbers.[1]'	8.6 ± 0.7	7.9	11.3	1.33 ± 0.12
jq '.favouriteNumbers[1]' benchmark/data.json	28.4 ± 1.6	27.3	38.1	4.36 ± 0.29
yq --yaml-output '.favouriteNumbers[1]' benchmark/data.yaml	128.3 ± 9.2	124.2	213.8	19.69 ± 1.59

Append to array of strings

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 put -f benchmark/data.json -t string -v 'blue' -o - 'favouriteColours.[]'	6.6 ± 0.3	6.1	8.3	1.00
dasel put string -f benchmark/data.json -o - '.favouriteColours.[]' blue	8.4 ± 0.3	7.8	9.2	1.28 ± 0.07
jq '.favouriteColours += ["blue"]' benchmark/data.json	28.3 ± 0.9	27.4	32.7	4.31 ± 0.25
yq --yaml-output '.favouriteColours += ["blue"]' benchmark/data.yaml	127.6 ± 2.4	124.1	140.3	19.45 ± 1.01

Update a string value

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 put -f benchmark/data.json -t string -v 'blue' -o - 'favouriteColours.[0]'	6.6 ± 0.3	6.1	7.4	1.00
dasel put string -f benchmark/data.json -o - '.favouriteColours.[0]' blue	9.5 ± 1.7	8.0	12.9	1.45 ± 0.27
jq '.favouriteColours[0] = "blue"' benchmark/data.json	28.5 ± 1.3	27.3	33.1	4.33 ± 0.26
yq --yaml-output '.favouriteColours[0] = "blue"' benchmark/data.yaml	127.3 ± 2.7	125.0	149.4	19.36 ± 0.86

Overwrite an object

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 put -f benchmark/data.json -o - -t json -v '{"first":"Frank","last":"Jones"}' 'user.name'	6.3 ± 0.3	6.0	7.2	1.00
dasel put document -f benchmark/data.json -o - -d json '.user.name' '{"first":"Frank","last":"Jones"}'	8.3 ± 0.3	7.8	9.6	1.31 ± 0.07
jq '.user.name = {"first":"Frank","last":"Jones"}' benchmark/data.json	28.2 ± 1.0	27.2	31.7	4.45 ± 0.23
yq --yaml-output '.user.name = {"first":"Frank","last":"Jones"}' benchmark/data.yaml	127.5 ± 2.5	124.6	143.8	20.10 ± 0.89

List keys of an array

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 -f benchmark/data.json 'all().key()'	6.4 ± 0.3	6.0	7.4	1.00
dasel -f benchmark/data.json -m '.-'	8.3 ± 0.3	7.8	9.6	1.30 ± 0.07
jq 'keys[]' benchmark/data.json	28.1 ± 1.0	27.1	32.1	4.41 ± 0.24
yq --yaml-output 'keys[]' benchmark/data.yaml	126.6 ± 2.1	123.7	138.3	19.82 ± 0.88

Delete property

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
daselv2 delete -f benchmark/data.json -o - 'id'	6.5 ± 0.3	6.1	8.2	1.00
dasel delete -f benchmark/data.json -o - '.id'	8.4 ± 0.3	7.9	10.1	1.30 ± 0.08
jq 'del(.id)' benchmark/data.json	28.3 ± 0.9	27.4	32.0	4.38 ± 0.24
yq --yaml-output 'del(.id)' benchmark/data.yaml	127.5 ± 2.7	124.7	147.3	19.74 ± 0.99