CSV parsing comparison

Generation.sh

for i in $(seq 1 600000)     
do
    echo SERVER$((RANDOM%800+100)),$RANDOM,$RANDOM,$RANDOM >> sample.csv
done

main.go

package main

import (
        "encoding/csv"
        "fmt"
        "io"
        "log"
        "os"
        "strconv"
)

func main() {
        var output = make(map[string]int, 0)
        in, err := os.Open("sample.csv")
        if err != nil {
                log.Fatal(err)
        }
        r := csv.NewReader(in)
        r.LazyQuotes = true

        for {
                record, err := r.Read()
                if err == io.EOF {
                        break
                }
                if err != nil {
                        log.Fatal(err)
                }

                s, err := strconv.Atoi(record[1])
                if err != nil {
                        log.Println(err)
                }

                output[record[0]] = output[record[0]] + s
        }
        fmt.Println(output["SERVER788"])
}

main.pl

#!/usr/bin/perl
my $file = 'sample.csv';
my %data;
open(my $fh, '<', $file) or die "Can't read file '$file' [$!]\n";
while (my $line = <$fh>) {
    chomp $line;
    my @fields = split(/,/, $line);
    $data{$fields[0]} = $data{$fields[0]} + $fields[1]
    #push @data, \@fields;
}

print "$data{'SERVER788'}\n"
#use Data::Dumper;
#print Dumper(%data);

main.py

#!/usr/bin/python
 
import csv
 
fname = "sample.csv"
file = open(fname, "rb")
 
reader = csv.reader(file)
result = {}
for row in reader:
    try: 
        result[row[0]] = result[row[0]] + int(row[1])
    except:
        result[row[0]] = int(row[1])
print result['SERVER788']

result.sh

# go 
$ /usr/bin/time -v ./main
12220632
        Command being timed: "./main"
        User time (seconds): 1.65
        System time (seconds): 0.02
        Percent of CPU this job got: 98%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:01.71
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 6156
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 1641
        Voluntary context switches: 285
        Involuntary context switches: 325
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# python
$ /usr/bin/time -v ./main.py
12220632
        Command being timed: "./main.py"
        User time (seconds): 2.20
        System time (seconds): 0.02
        Percent of CPU this job got: 97%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.28
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 5180
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 1429
        Voluntary context switches: 1
        Involuntary context switches: 552
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# perl
$ /usr/bin/time -v ./main.pl
12220632
        Command being timed: "./main.pl"
        User time (seconds): 3.19
        System time (seconds): 0.01
        Percent of CPU this job got: 91%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:03.50
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 2156
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 588
        Voluntary context switches: 1
        Involuntary context switches: 1231
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0