conv (master) λ curl -o ../book1.txt http://vojnaimir.ru/files/book1.txt  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current                                 Dload  Upload   Total   Spent    Left  Speed100 1439k  100 1439k    0     0   719k      0  0:00:02  0:00:02 --:--:--  556kconv (master) λ i=0; while ((i++ < 20)); do cat ../book1.txt >> ../big.txt; done; ls -lh ../big.txt-rw-r--r-- 1 user user 29M Feb  3 18:08 ../big.txtconv (master) λ time iconv -f cp1251 -t utf8 ../big.txt -o ../iconv.resultreal0m0.211suser0m0.159ssys0m0.053sconv (master) λ time target/release/conv -f cp1251 -t utf8 ../big.txt -o ../conv.resultreal0m0.950suser0m0.917ssys0m0.032sconv (master) λ md5sum -c <<<"$(md5sum ../iconv.result|sed 's/iconv/conv/')"../conv.result: OKconv (master) λ /usr/bin/time -v iconv -c -f cp1251 -t utf8 ../1g.txt -o /dev/null...Elapsed (wall clock) time (h:mm:ss or m:ss): 0:06.09Maximum resident set size (kbytes): 1046644...conv (master) λ /usr/bin/time -v target/release/conv -f cp1251 -t utf8 ../1g.txt -o /dev/null ...Elapsed (wall clock) time (h:mm:ss or m:ss): 0:32.92Maximum resident set size (kbytes): 10808...