to merge 4 text files, it is taking more +than 8 minutes.

There's something you're not telling us? Or your disk is badly screwed. This is merging 4 10MB files on my system: 

[15:23:09.44] c:\test>dir 10* mer*
03/09/2009  15:06        10,516,481 10MB.1
03/09/2009  15:06        10,516,481 10MB.2
03/09/2009  15:06        10,516,481 10MB.3
03/09/2009  15:07        10,516,481 10MB.4
               4 File(s)     42,065,924 bytes

[15:23:16.89] c:\test>perl -pE1 10MB.1 10MB.2 10MB.3 10MB.4 > mergedOu
+tput.txt

[15:23:19.21] c:\test>dir mergedOutput.txt
03/09/2009  15:23        42,065,924 mergedOutput.txt

[download]

Even with a cold cache, it never seems to take more than 3 seconds.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re: How to merge Huge log files (each 10 MB) into a single file by BrowserUk
in thread How to merge Huge log files (each 10 MB) into a single file by lnin

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