I don't think your diagnosis is correct. My perl can read long lines with no problem: 

   $ perl -e 'for (1 .. 10) { print("A" x (9000 + $_) . "\n") }' > fil
+e.txt
   
   $ perl -le 'open FOO, "file.txt"; print length $_ for (<FOO>);'
   9002
   9003
   9004
   9005
   9006
   9007
   9008
   9009
   9010
   9011

[download]

What version of Perl are you running? What OS? Can we see the real code, please?

-sam

In reply to Re: Reading a file with 8kB long lines by samtregar
in thread Reading a file with 8kB long lines by gri6507

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