You are writing each line separately?
I suggest storing everything you want to write in a variable, and then write it all out in one big I/O operation. The writing process should be faster, and AV/Sec software won't be tempted to rescan the changed file fifty thousand times.

In reply to Re^3: Why so slow when using Perl/Tk? by SuicideJunkie
in thread Why so slow when using Perl/Tk? by RAS230

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