Groovy / Grails在阅读大型csv文件时速度很慢

Question

I have a big csv file (168MB, 149K rows, 125 cols). I want to get the sum of the third column with the following code:

def tot = 0

new File("/path/to/big/file.csv").splitEachLine(";") { row ->
    try {
        tot += row[2].toBigDecimal()
    } catch(Exception e) {}
}

println tot

and it takes 11 secs:

root@front1:~# time groovy test.groovy
8691797.09805144

real    0m10.965s
user    0m9.977s
sys     0m0.500s
root@front1:~#

I've a similar code written in php that takes only 2 seconds to get the same result on the same machine.

Is there any tuning or better code that I should do in groovy/grails in order to get the same execution time ?

Thanks

Groovy Version: 2.3.8 JVM: 1.6.0_29 Vendor: Oracle Corporation OS: Linux