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Best Stratergy to process Huge files

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# 1  
Old 12-11-2009
Best Stratergy to process Huge files
I have a file with 20 million records. I need to read each record and process it.
Which will be faster? Perl, Shell or awk?
and what is the best method to read huge files line by line?
# 2  
Old 12-11-2009
Is the order of processing of records strictly serialized?
Is there any dependency on output of processing 'n' record with respect to n+1 record?

What operation are you trying to perform on the record?
# 3  
Old 12-11-2009
There is no dependency between the records neither thay need serialised processing.
I will read each record and add it in a sql query.

eg: select * from table1 where field in (.........)

I will read each field from file and add in this query.Also every 500 fields I will form a new query.

The query will be printed in a file.
# 4  
Old 12-11-2009
Quote:
Originally Posted by tene
I have a file with 20 million records. I need to read each record and process it.
Which will be faster? Perl, Shell or awk?
and what is the best method to read huge files line by line?
forget shell for huge files. Awk or Perl for processing huge files are fine, but awk sometimes perform better than Perl in terms of speed. I personally prefer awk.
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