I have to parse a formatted file of size 34M but its taking long about 30 min. Can you plz suggest changes to increase the speed?

#!usr/local/bin/perl
@timeData=localtime(time);
print "@timeData\n";

open FILE,"/usr/rr/xaa";
### points 
###### 1. create tables 

$count=0;
$ban_gate=0;
$path_gate=0;
$ras_gate=0;
$ldc_gate=0;
my @col;
my @data;
my $adjust_flag=0;
sub brace_rem {
  my($p)= @_;
    chop $p;
    $p=reverse $p;
    chop $p;
    $q= reverse $p;
    return "\'$q\'";
}
########### sqlite perl ###########
use DBI;
my $driver   = "SQLite";
my $database = "test1.db";
my $dsn = "DBI:$driver:dbname=$database";
my $userid = "";
my $password = "";
$dbh = DBI->connect($dsn, $userid, $password, { RaiseError => 1 })
                      or die $DBI::errstr;

sub table_create {

      my($tbname,@col)=@_;
      my $c;
    foreach $c(@col) {
    $c=brace_rem($c);
    }
    my @upcol=join(',',@col);
    my $sth=$dbh->prepare("CREATE TABLE $tbname (@upcol)");
     my $rv = $sth->execute() or die $DBI::errstr;
    if($rv < 0){
    print $DBI::errstr;
    } else {
#    print "Table $tbname created";
    }
}

sub insert_data {
    my $d;
    my($tbname,@data)=@_;
       foreach $d(@data) {
    $d=brace_rem($d);
    }
    my @updata=join(',',@data);
   my $stmt = qq(INSERT INTO $tbname VALUES(@updata););
my $rv = $dbh->do($stmt) or die $DBI::errstr;
}

while(<FILE>) {
        ############# BANNER #################
   if ($ban_gate==1) {
       if($_=~/END_BANNER/) {
       $ban_gate=0; 
       table_create('FileInfo',@col);
       insert_data(FileInfo,@data);
       }
       else {
       @parts=/\{.*?\}/g;
       push(@col,$parts[0]);
       push(@data,$parts[1]);
       }
   }
   else { ### bangate=0
        if($_=~/^BANNER/) {
        $ban_gate=1;
        }
        else { ## else of banner           
        if($ras_gate==1) {
            if($_=~/END_REQ_CLC/ || $_=~/END_ARR_CLC/ || $_=~/END_SLK_
+CLC/) {
            $ras_gate=0; 
            $tbname="$ras_token$pathno";
            table_create($tbname,@col);
            insert_data($tbname,@data);
            }
            else { ## else of re with rasgate=1
             @parts=/\{.*?\}/g;
             push(@col,$parts[1]);
             push(@data,$parts[2]);
            }
        }
        else { ### else of rasgate=0
            if($_=~/(\s{2})REQ_CLC/ || $_=~/\s{2}SLK_CLC/ || $_=~/\s{2
+}ARR_CLC/) {
                $ras_gate=1;
                while (@col) {pop(@col);}
                while (@data) {pop(@data);}
                $ras_token=$_;
                chomp $ras_token;
            }
            else { ###### else of rasgate=0 and not req 
            if ($ldc_gate==1) {
                if ($_=~/END_LAUNCH_CLK_PATH/ || $_=~/END_DATA_PATH/ |
+| $_=~/END_CAP_CLK_PATH/) {
                $ldc_gate=0;
                }
                else {### else of rasgate=0 and not req and not endlau
+nch, ldcgate=1
                if($_=~/INST/ || $_=~/\s{4}HPIN/ || $_=~/\s{4}NET/ || 
+$_=~/\s{4}PORT/ ) {
                    @parts=/\{.*?\}/g;
                    while (@data) {pop(@data);}
                    if ($flag==1 && $_=~/INST/) {
                    for($i=0;$i<$#parts-2;++$i) {
                        push(@data,$parts[$i]);
                    }
                    push(@data,"$parts[$i]$parts[$i+1]");
                    push(@data,$parts[$i+2]);
                    } else {
                    foreach $l (@parts) {
                        push(@data,$l);
                    }
                    }
                    insert_data($tbname,@data);
                }
                else {### else of inst net, rasgate=0
                        if($_=~/COLUMNS/) {
                        @parts=/\{.*?\}/g;
                             foreach $l (@parts) {
                        if($l=~/adjustment/) {$flag=1; }
                        else {$flag=0;}
                        push(@col,$l);
                        }
                        $tbname="$ldc_token$pathno";
                        table_create($tbname,@col);
                    }
                } 
                }
            }
            else { ### ldcgate=0
                if($_=~/(\s{2})LAUNCH_CLK_PATH/ || $_=~/\s{2}DATA_PATH
+/ || $_=~/\s{2}CAP_CLK_PATH/) {
                $ldc_gate=1;
                $ldc_token=$_;
                while (@col) {pop(@col);}
    
                chomp $ldc_token;
                if($_=~/DATA_PATH/) { chop $ldc_token;}
                }
            }
            }
        }
          if($_=~/^PATH/) {
          @parts = split(/\s+/,$_);
          $pathno=$parts[1];
          print "$pathno\n";
          }
        }
   }
}

@timeData=localtime(time);
print "@timeData\n";
$dbh->disconnect();
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