Just to give an idea of what I'm doing this is a line from the log:

2004-03-01 22:00:12 2 15.32.17.34 200 TCP_HIT 3140 326 GET http www.wahm.com http://www.wahm.com/images/vote.gif u779479 DEFAULT_PARENT 61.2.249.106 - "Mozilla/4.0 (compatible; MSIE 5.01; Windows 95)" OBSERVED none - 61.2.249.47 SG-HTTP-Service

And my regex is like this: 

while (<>){
        /(\S*\s*\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s
+*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\".
+*\")\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)\s*(\S*)/;
        #print "\n";
        #printf "\ndate time    = %s",$1;
        #printf "\ntime taken    = %s",$2;
        #printf "\nc-ip        = %s",$3;
        #printf "\nsc-status    = %s",$4;
        #printf "\ns-action    = %s",$5;
        #printf "\nsc-bytes    = %s",$6;
        #printf "\ncs-bytes    = %s",$7;
        #printf "\ncs-method    = %s",$8;
        #printf "\ncs-uri-scheme    = %s",$9;
        #printf "\ncs-host    = %s",$10;
        #printf "\ncs-uri-stem    = %s",$11;
        #printf "\ncs-username    = %s",$12;
        #printf "\ns-hierarchy    = %s",$13;
        #printf "\ns-supplier-name = %s",$14;
        #printf "\ncs(Content-Type)= %s",$15;
        #printf "\ncs(User-Agent) = %s",$16;
        #printf "\nsc-filter-result = %s",$17;
        #printf "\nsc-filter-category = %s",$18;
        #printf "\nx-virus-id     = %s",$19;
        #printf "\ns-ip        = %s",$20;
        #printf "\ns-sitename    = %s",$21;

}

[download]

Can you see whether a more explicit regex would speed the parse up?

Thanks,

js1.

In reply to Re^2: fast greedy regex by js1
in thread fast greedy regex by js1

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