Update: Resolved; the original problem seems to have been caused by a corrupt *gz file...
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Problem synopsis: reading in a gzipped ASCII file via IO::Uncompress::Gunzip stalls after about 2,000,000 lines, with the memory usage growing.

Details: I am reading lines of ASCII data stored in large (~1 gb gzipped files). I tried opening them via open $fh, "gunzip -c $fn |" but then the script quickly runs out of memory and dies.
I decided to try IO::Uncompress::Gunzip. But then simply reading the file line by line appears to fail: 
my $z = new IO::Uncompress::Gunzip $ARGV[0];
while( <$z> ){
    chomp;
    print "$.:$_\n";    
}

[download]
stalls after about 2,200,000 lines. The memory usage of the script grows, but it appears to just be sitting there stuck... Can anyone shed some light onto what is going on, and hopefully suggest another way I can read large gz files directly from Perl?..

In reply to Problems reading large gz files with IO::Uncompress::Gunzip by dnquark

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