Bad performance of eachline() on STDIN

[tferic]

As @ToucheSir pointed out, there is a similar issue in a related thread:

Slow gzip streaming in julia but not in python

Hi there, I am new to Julia, and come to Julia for performance with fewer codes. I have been using R, and encountered a simple task: read from a gziped file and do something to each line. It was slow in R, of course. So I went to Perl first. Here is the code: perl -e ' open( DATA, "zcat ~/in2/swxx/sj/db/ncbi/gene/gene2accession.gz|"); while( <DATA>) { @F = split( /\t/); } close( DATA);' I found the gzip command was using about 48% CPU of a thread. Then I came to Julia, and here is the code: …