Improve performance of echo |awk


 
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# 1  
Old 04-12-2012
Improve performance of echo |awk

Hi,

I have a script which looks like this.
Input file
data1^20
data2^30


Code:
 
#!/bin/sh
file"/home/Test.txt"
while read line
do
echo $line |awk 'BEGIN { FS = "^" } ; { print $2 }'
echo $line |awk 'BEGIN { FS = "^" } ; { print $1 }' | gzip | wc -c
done <"$file"

How can i improve the performance or better the code?

Thanks,
Chetan.C
# 2  
Old 04-12-2012
Try this:
Code:
awk -F"^" '{print $2; print $1 " | gzip | wc -c"}' $file

# 3  
Old 04-12-2012
Hi,

Thanks for response.
Actually i need to have the output in the below format only.
data1
20
data2
30.

As i am feeding it to datstage code.

Tried out the code you gave its printing gzip |wc -c also.

Thanks,
Chetan.C
# 4  
Old 04-12-2012
Beyond a certain point you can't improve the performance of running gzip thousands of separate times to process tiny strings. This might be some improvement since awk is replaced by pure shell builtins:

Code:
while IFS="^" read FIELD1 FIELD2
do
        echo "$FIELD2"
        echo "$FIELD1" | gzip | wc -c
done <"$file"

This User Gave Thanks to Corona688 For This Post:
# 5  
Old 04-12-2012
Quote:
Originally Posted by Corona688
Beyond a certain point you can't improve the performance of running gzip thousands of separate times to process tiny strings. This might be some improvement since awk is replaced by pure shell builtins:

Code:
while IFS="^" read FIELD1 FIELD2
do
        echo "$FIELD2"
        echo "$FIELD1" | gzip | wc -c
done <"$file"


Works Astoundingly!!!
Thanks a lot.
close to 50% execution time is reduced.


Thanks again,
Chetan.C
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