I probably underestimated how much does it take to convert it from "fast JSON decoder written in C" (which many interpreted languages use in backend) to actual

I probably underestimated how much does it take to convert it from "fast JSON decoder written in C" (which many interpreted languages use in backend) to actual language implementation, but in perl it's pretty fast: -> ᛯ ls -s -h big.json 101M big.json [11:53:30] ^ [/tmp] -> ᛯ cat /tmp/1.pl #!/usr/bin/perl use v5.24; use JSON::XS; use File::Slurp; my $j = decode_json(read_file('/tmp/big.json')); say scalar @{$j->{'a'}} [11:53:39] ^ [/tmp] -> ᛯ time /tmp/1.pl 34952534 /tmp/1.pl 0,81s user 0,13s system 99% cpu 0,939 total so just around 100MB/s