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Improve the performance of a shell script

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Top Forums Shell Programming and Scripting Improve the performance of a shell script
# 8  
Old 04-09-2010
And chihung's shell solution can be extended further to match the report output -

Code:
$
$
$ cat -n alert.log
     1  ERROR (19:58:50,781 ERROR Thread-37-RunnerPool-Fast RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
     2  ERROR (19:45:40,529 ERROR Thread-26-RunnerPool-Std RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
     3  ERROR (01:31:24,073 ERROR Thread-214 STAbstractComputable.getComputeResult:114 Cycle detected at com.sample.es.calcrules.newstyle.Rul...taHolder@12345, key=rules|APS   .Q, subject=APS   .Q, , rule=com.sample.es
     4  ERROR (01:31:24,073 ERROR Thread-214 STAbstractComputable.getComputeResult:114 Cycle detected at com.sample.es.calcrules.newstyle.Rul...taHolder@12345, key=rules|APS   .Q, subject=APS   .Q, , rule=com.sample.es
     5  ERROR (01:31:24,073 ERROR Thread-214 STAbstractComputable.getComputeResult:114 Cycle detected at com.sample.es.calcrules.newstyle.Rul...taHolder@12345, key=rules|APS   .Q, subject=APS   .Q, , rule=com.sample.es
     6  ERROR (19:58:50,781 ERROR Thread-37-RunnerPool-Fast RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
     7  ERROR (19:45:40,529 ERROR Thread-26-RunnerPool-Std RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
     8  ERROR (19:45:40,529 ERROR Thread-26-RunnerPool-Std RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
     9  ERROR (19:45:40,529 ERROR Thread-26-RunnerPool-Std RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
$
$
$ sort alert.log | uniq -c | while read num text; do printf "$text\nALERTS MATCHED: $num\n"; done
ERROR (01:31:24,073 ERROR Thread-214 STAbstractComputable.getComputeResult:114 Cycle detected at com.sample.es.calcrules.newstyle.Rul...taHolder@12345, key=rules|APS   .Q, subject=APS   .Q, , rule=com.sample.es
ALERTS MATCHED: 3
ERROR (19:45:40,529 ERROR Thread-26-RunnerPool-Std RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
ALERTS MATCHED: 4
ERROR (19:58:50,781 ERROR Thread-37-RunnerPool-Fast RamPricingQueryRunner.run:493 Got exception parsing VAN query result for product [APS   .Q])
ALERTS MATCHED: 2
$
$

I gave up after reading the first 10 lines of the OP's script, but I guess this is what it's trying to do.

tyler_durden
# 9  
Old 04-09-2010
I think the O/P is trying to match the messages BUT ignoring some of the message such as perhaps the timestamp. The original script tests for a percentage match in words in the message which is a bit too fuzzy for me.

We await the O/Ps definition of a "match".
# 10  
Old 04-11-2010
Hi All,

apologies if my post is unclear....

Let me explain you.

My alert.log will contain 1000's of error messages. among them only very few will be exactly same. But 50-100 alerts may have the more or less same pattern (matches 75% of the words in a line). So i want to consider not only the exactly matching lines, but also the 75% words matching alerts as matched alerts.

Code:
Example:

The 2-3 of the below lines matches exactly, but other lines too matches but at least 75%. so i consider all the below lines as matched lines. Hope now i'm clear :)


Shell Programming and Scripting Post questions about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and OTHER shell scripts and shell scripting languages here.
Shell Programming and Scripting Post questions about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and OTHER shell scripts and shell scripting languages here.

Shell Programming Post questions about KSH, BASH, PERL, PHP, SED, AWK and OTHER shell scripting languages here.

Shell Scripting Post questions about , SH, BASH, PERL, PHP, SED, OTHER shell scripts and shell scripting here.

Shell Programming and Scripting about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and  scripting languages here.

Shell Programming and Scripting Post questions about KSH, CSH, SH, BASH, PERL, PHP, SED, AWK and OTHER shell scripts and shell scripting languages here.



---------- Post updated at 06:38 AM ---------- Previous update was at 06:33 AM ----------

as my error messages won't match exactly, i could not use sort -c command. as at least 75% of the words matching, i'm comparing them word by word (for loop). i agree as there are 1000's of lines in the alert.log, the while and for loops may execute millions of times, hence i have approached you experts for the better solution.

the inner while and outer while loops use the same file. for my convenience i have renamed them as 2 different files.
# 11  
Old 04-12-2010
Lateral though. If we correct and enhance your "tr" command to remove all awkward characters one sample message comes out as:

Code:
ERROR 19 45 40 529 ERROR Thread 26 RunnerPool Std RamPricingQueryRunner run 493 Got exception parsing VAN query result for product APS Q

If we ignore the portion in red, does the rest of the message constitute a "match?
For that matter is the "493" just an error message number which would be good enough for a "match"?

Code:
The enhanced "tr" is:
tr '\-[]():.,' '       '|tr -s '[:space:]'
Note that there are no space characters in the first string.
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