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Inefficient use of large data processing file with Perl XML handlers :: Twig

I sometimes need to retrieve data from a large XML database export. File sizes range from 600 to 700 MB. With several days of research, I came to the conclusion that XML::Twigthis is the way to go, because its handlers allow me to process a fragment of a file in parts.

I followed the examples, and with several hours of trial and error, I wrote Perl code that completed the task that I needed to do. The code worked, it extracted the necessary data and calculated the details that I needed. But while the script was running (it took about 15 minutes to process the 620 MB XML code), I noticed in Activity Monitor that in the end, the memory usage quickly increased to an unreasonably high level.

I removed the Perl code that processes the XML tag that interests me and replaced it with a single command to increase the value of the variable, simply by calculating how many elements productwere found. Memory usage was similar. First, normal, then towards the last few elements, he began to increase rapidly and eat everything that I have.

I added code to track the time, number of items processed, and the amount of memory used for the Perl process. This code is shown here:

#!/usr/bin/perl

use strict;
use utf8;

use XML::Twig;

binmode STDOUT, ":encoding(UTF-8)";
binmode STDERR, ":encoding(UTF-8)";

my $my_processID = $$;
my ($xml_file_name, $second_arg) = @ARGV;
unless (defined($xml_file_name)) { die "Please provide XML filename as 1st argument."; }

my $product_counter = 0;
my @shell_command_output_text;
my $resource_usage_status;
my $reference_timestamp;
my $datetimeNow;

my $t = XML::Twig->new(
    twig_handlers => { 'product' => \&do_what_needs_to_be_done_with_each_product },
    pretty_print  => 'indented'
);

$reference_timestamp = time();

$t->parsefile( $xml_file_name, ErrorContext => 2 );
print "(Parse finished)\n"; 
showstatus();
$t->purge;

print "(Purge finished)\n"; 
showstatus();
print "\nJOB COMPLETE.\n$product_counter items processed.\n";

exit 0;

sub do_what_needs_to_be_done_with_each_product() {
    my( $twig, $product)= @_;

    $product_counter++;

    ## Display status every 5 seconds:
    if ( ( time()-$reference_timestamp ) > 5 ) {
        showstatus();
        $reference_timestamp = time();
    }

    $twig->purge;
} ## end-sub


sub showstatus() {

    @shell_command_output_text = `top -l 1 -pid $my_processID -stats pid,command,cpu,mem`;

    ## I only need the last line of that output.
    $resource_usage_status = $shell_command_output_text[$#shell_command_output_text];
    $datetimeNow = localtime();
    chomp $resource_usage_status;

    print "Res: $resource_usage_status -> item count: $product_counter <- time: $datetimeNow\n";
} ## end-sub

And this is what was shown on the screen when running the above script.

keve@deimos:DATA$ ./twigExample.pl product_db_extract.xml 
Res: 3237  perl5.18 0.0  12M+ -> item count: 3086 <- time: Sat Nov 18 23:45:48 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 6521 <- time: Sat Nov 18 23:45:55 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 9909 <- time: Sat Nov 18 23:46:02 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 12751 <- time: Sat Nov 18 23:46:09 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 15570 <- time: Sat Nov 18 23:46:16 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 18151 <- time: Sat Nov 18 23:46:23 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 20828 <- time: Sat Nov 18 23:46:30 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 23561 <- time: Sat Nov 18 23:46:37 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 26230 <- time: Sat Nov 18 23:46:44 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 28861 <- time: Sat Nov 18 23:46:51 2017
Res: 3237  perl5.18 0.0  12M+ -> item count: 31665 <- time: Sat Nov 18 23:46:58 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 34443 <- time: Sat Nov 18 23:47:05 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 36952 <- time: Sat Nov 18 23:47:12 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 39461 <- time: Sat Nov 18 23:47:19 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 42113 <- time: Sat Nov 18 23:47:26 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 44794 <- time: Sat Nov 18 23:47:33 2017
Res: 3237  perl5.18 0.0  13M+ -> item count: 47510 <- time: Sat Nov 18 23:47:40 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 50154 <- time: Sat Nov 18 23:47:47 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 52869 <- time: Sat Nov 18 23:47:54 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 55497 <- time: Sat Nov 18 23:48:01 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 57725 <- time: Sat Nov 18 23:48:08 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 59754 <- time: Sat Nov 18 23:48:15 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 61600 <- time: Sat Nov 18 23:48:22 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 63244 <- time: Sat Nov 18 23:48:29 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 64801 <- time: Sat Nov 18 23:48:36 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 66448 <- time: Sat Nov 18 23:48:43 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 68022 <- time: Sat Nov 18 23:48:50 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 69561 <- time: Sat Nov 18 23:48:57 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 71180 <- time: Sat Nov 18 23:49:04 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 73009 <- time: Sat Nov 18 23:49:11 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 75259 <- time: Sat Nov 18 23:49:18 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 77331 <- time: Sat Nov 18 23:49:25 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 79344 <- time: Sat Nov 18 23:49:32 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 81389 <- time: Sat Nov 18 23:49:39 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 83345 <- time: Sat Nov 18 23:49:46 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 85346 <- time: Sat Nov 18 23:49:53 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 87350 <- time: Sat Nov 18 23:50:00 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 89359 <- time: Sat Nov 18 23:50:07 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 91374 <- time: Sat Nov 18 23:50:14 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 93451 <- time: Sat Nov 18 23:50:21 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 95542 <- time: Sat Nov 18 23:50:28 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 97635 <- time: Sat Nov 18 23:50:35 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 99764 <- time: Sat Nov 18 23:50:42 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 101914 <- time: Sat Nov 18 23:50:49 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 103896 <- time: Sat Nov 18 23:50:56 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 105982 <- time: Sat Nov 18 23:51:03 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 108023 <- time: Sat Nov 18 23:51:10 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 110090 <- time: Sat Nov 18 23:51:17 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 112033 <- time: Sat Nov 18 23:51:24 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 114039 <- time: Sat Nov 18 23:51:31 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 116038 <- time: Sat Nov 18 23:51:38 2017
Res: 3237  perl5.18 0.0  15M+ -> item count: 118031 <- time: Sat Nov 18 23:51:45 2017
(Parse finished)
Res: 3237  perl5.18 0.0  3780M+ -> item count: 119335 <- time: Sat Nov 18 23:54:21 2017
(Purge finished)
Res: 3237  perl5.18 0.0  2634M+ -> item count: 119335 <- time: Sat Nov 18 23:54:27 2017

JOB COMPLETE.
119335 items processed.
keve@deimos:DATA$

Note the 3 minute space where “Parse finished” is printed.

, , Activity Monitor. , , 15 . : 3 3780M , - .

, script, 3- . , perl script XML .

#!/bin/bash
while true
do
  perlStat=`top -l 1 -pid $1 -stats pid,command,cpu,mem,purg,vsize | grep perl5`
  echo "`date` ::> $perlStat"
  sleep 5
done

script, , Perl script XML:

keve@deimos:DATA$ ./monitorTWIGprocess.sh 3237
2017 Nov 18 Szo 23:45:53 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:00 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:06 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:12 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:18 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:24 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:30 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:36 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:42 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:48 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:46:54 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:47:01 CET ::> 3237  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 18 Szo 23:47:07 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:13 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:19 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:25 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:31 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:37 CET ::> 3237  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 18 Szo 23:47:43 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:47:49 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:47:56 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:02 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:08 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:14 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:20 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:26 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:32 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:38 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:44 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:51 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:48:57 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:03 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:09 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:15 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:21 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:27 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:33 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:39 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:46 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:52 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:49:58 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:04 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:10 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:16 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:22 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:28 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:35 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:41 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:47 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:53 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:50:59 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:05 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:11 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:17 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:23 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:29 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:36 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:42 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:48 CET ::> 3237  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 18 Szo 23:51:54 CET ::> 3237  perl5.18 0.0  125M+ 0B   N/A  
2017 Nov 18 Szo 23:52:00 CET ::> 3237  perl5.18 0.0  278M+ 0B   N/A  
2017 Nov 18 Szo 23:52:06 CET ::> 3237  perl5.18 0.0  430M+ 0B   N/A  
2017 Nov 18 Szo 23:52:12 CET ::> 3237  perl5.18 0.0  584M+ 0B   N/A  
2017 Nov 18 Szo 23:52:18 CET ::> 3237  perl5.18 0.0  737M+ 0B   N/A  
2017 Nov 18 Szo 23:52:24 CET ::> 3237  perl5.18 0.0  889M+ 0B   N/A  
2017 Nov 18 Szo 23:52:31 CET ::> 3237  perl5.18 0.0  1042M+ 0B   N/A  
2017 Nov 18 Szo 23:52:37 CET ::> 3237  perl5.18 0.0  1195M+ 0B   N/A  
2017 Nov 18 Szo 23:52:43 CET ::> 3237  perl5.18 0.0  1349M+ 0B   N/A  
2017 Nov 18 Szo 23:52:49 CET ::> 3237  perl5.18 0.0  1502M+ 0B   N/A  
2017 Nov 18 Szo 23:52:55 CET ::> 3237  perl5.18 0.0  1656M+ 0B   N/A  
2017 Nov 18 Szo 23:53:01 CET ::> 3237  perl5.18 0.0  1809M+ 0B   N/A  
2017 Nov 18 Szo 23:53:07 CET ::> 3237  perl5.18 0.0  1961M+ 0B   N/A  
2017 Nov 18 Szo 23:53:13 CET ::> 3237  perl5.18 0.0  2114M+ 0B   N/A  
2017 Nov 18 Szo 23:53:19 CET ::> 3237  perl5.18 0.0  2267M+ 0B   N/A  
2017 Nov 18 Szo 23:53:26 CET ::> 3237  perl5.18 0.0  2420M+ 0B   N/A  
2017 Nov 18 Szo 23:53:32 CET ::> 3237  perl5.18 0.0  2573M+ 0B   N/A  
2017 Nov 18 Szo 23:53:38 CET ::> 3237  perl5.18 0.0  2726M+ 0B   N/A  
2017 Nov 18 Szo 23:53:44 CET ::> 3237  perl5.18 0.0  2879M+ 0B   N/A  
2017 Nov 18 Szo 23:53:50 CET ::> 3237  perl5.18 0.0  3032M+ 0B   N/A  
2017 Nov 18 Szo 23:53:56 CET ::> 3237  perl5.18 0.0  3186M+ 0B   N/A  
2017 Nov 18 Szo 23:54:02 CET ::> 3237  perl5.18 0.0  3339M+ 0B   N/A  
2017 Nov 18 Szo 23:54:08 CET ::> 3237  perl5.18 0.0  3492M+ 0B   N/A  
2017 Nov 18 Szo 23:54:15 CET ::> 3237  perl5.18 0.0  3646M+ 0B   N/A  
2017 Nov 18 Szo 23:54:21 CET ::> 3237  perl5.18 0.0  3786M+ 0B   N/A  
2017 Nov 18 Szo 23:54:27 CET ::> 3237  perl5.18 0.0  3502M+ 0B   N/A  
2017 Nov 18 Szo 23:54:33 CET ::> 
^C
keve@deimos:DATA$

23:51:54. , 3- . .

, (119,335-) . , ? 3.5G 15M, .

- ?

, ?

, , .


twig_roots.
, twig_roots, :

my $t = XML::Twig->new(
        ##twig_handlers => { 'product' => \&do_what_needs_to_be_done_with_each_product },
        twig_roots => { 'product' => \&do_what_needs_to_be_done_with_each_product },
        twig_print_outside_roots => 0,
        pretty_print => 'indented'
        );

$twig->purge(); .

perl script:

keve@deimos:DATA$ ./twigExample.pl product_db_extract.xml 
Res: 1591  perl5.18 0.0  12M+ -> item count: 2852 <- time: Sun Nov 19 15:20:51 2017
Res: 1591  perl5.18 0.0  12M+ -> item count: 6106 <- time: Sun Nov 19 15:20:58 2017
Res: 1591  perl5.18 0.0  12M+ -> item count: 9341 <- time: Sun Nov 19 15:21:05 2017
Res: 1591  perl5.18 0.0  12M+ -> item count: 12141 <- time: Sun Nov 19 15:21:12 2017
.
.
.
Res: 1591  perl5.18 0.0  15M+ -> item count: 112293 <- time: Sun Nov 19 15:26:41 2017
Res: 1591  perl5.18 0.0  15M+ -> item count: 114255 <- time: Sun Nov 19 15:26:48 2017
Res: 1591  perl5.18 0.0  15M+ -> item count: 116171 <- time: Sun Nov 19 15:26:55 2017
Res: 1591  perl5.18 0.0  15M+ -> item count: 118099 <- time: Sun Nov 19 15:27:02 2017
(Parse finished)
Res: 1591  perl5.18 0.0  15M+ -> item count: 119335 <- time: Sun Nov 19 15:27:56 2017
(Purge finished)
Res: 1591  perl5.18 0.0  15M+ -> item count: 119335 <- time: Sun Nov 19 15:27:57 2017

JOB COMPLETE.
119335 items processed.
keve@deimos:DATA$

script:

keve@deimos:DATA$ ./monitorTWIGprocess.sh 1591
2017 Nov 19 Vas 15:20:57 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:03 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:09 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:16 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:22 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:28 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:34 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:40 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:46 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:52 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:21:58 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:22:04 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:22:10 CET ::> 1591  perl5.18 0.0  12M+ 0B   N/A  
2017 Nov 19 Vas 15:22:16 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:22 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:28 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:35 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:41 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:47 CET ::> 1591  perl5.18 0.0  13M+ 0B   N/A  
2017 Nov 19 Vas 15:22:53 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:22:59 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:05 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:11 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:17 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:23 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:29 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:35 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:41 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:47 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:23:54 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:00 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:06 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:12 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:18 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:24 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:30 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:36 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:42 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:48 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:24:54 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:00 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:06 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:13 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:19 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:25 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:31 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:37 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:43 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:49 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:25:55 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:01 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:07 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:13 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:19 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:26 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:32 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:38 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:44 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:50 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:26:56 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:02 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:08 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:14 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:20 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:26 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:32 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:38 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:44 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:51 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:27:57 CET ::> 1591  perl5.18 0.0  15M+ 0B   N/A  
2017 Nov 19 Vas 15:28:03 CET ::> 
^C
keve@deimos:DATA$

, twig_roots Perl , . XML, ( XML), 20 . !
, , , . . - ? , , , Perl- XML-. twig_roots , , .

+4
2

XML, product,

, , twig_handlers, XML::Twig /

- XML , , twig_roots ,

. ,

my $t = XML::Twig->new(
    twig_roots               => { product => \&do_what_needs_to_be_done_with_each_product },
    twig_print_outside_roots => 0,
    pretty_print             => 'indented',
);

, do_what_needs_to_be_done_with_each_product (, ) $t->purge

+4

, , .

, ?

, , $twig->purge(); /.
perl script XML:

keve@deimos:DATA$ ./twigExample.pl product_db_extract.xml 
Res: 496  perl5.18 0.0  144M+ -> item count: 2905 <- time: Sun Nov 19 13:23:04 2017
Res: 496  perl5.18 0.0  291M+ -> item count: 6341 <- time: Sun Nov 19 13:23:11 2017
Res: 496  perl5.18 0.0  439M+ -> item count: 9777 <- time: Sun Nov 19 13:23:18 2017
Res: 496  perl5.18 0.0  587M+ -> item count: 12641 <- time: Sun Nov 19 13:23:25 2017
Res: 496  perl5.18 0.0  735M+ -> item count: 15528 <- time: Sun Nov 19 13:23:32 2017
Res: 496  perl5.18 0.0  883M+ -> item count: 18137 <- time: Sun Nov 19 13:23:39 2017
Res: 496  perl5.18 0.0  1032M+ -> item count: 20852 <- time: Sun Nov 19 13:23:46 2017
Res: 496  perl5.18 0.0  1179M+ -> item count: 23596 <- time: Sun Nov 19 13:23:53 2017
Res: 496  perl5.18 0.0  1328M+ -> item count: 26297 <- time: Sun Nov 19 13:24:00 2017
Res: 496  perl5.18 0.0  1476M+ -> item count: 28929 <- time: Sun Nov 19 13:24:07 2017
Res: 496  perl5.18 0.0  1624M+ -> item count: 31752 <- time: Sun Nov 19 13:24:14 2017
Res: 496  perl5.18 0.0  1772M+ -> item count: 34536 <- time: Sun Nov 19 13:24:21 2017
Res: 496  perl5.18 0.0  1920M+ -> item count: 37019 <- time: Sun Nov 19 13:24:28 2017
Res: 496  perl5.18 0.0  2068M+ -> item count: 39566 <- time: Sun Nov 19 13:24:35 2017
Res: 496  perl5.18 0.0  2216M+ -> item count: 42246 <- time: Sun Nov 19 13:24:42 2017
Res: 496  perl5.18 0.0  2365M+ -> item count: 44976 <- time: Sun Nov 19 13:24:49 2017
Res: 496  perl5.18 0.0  2513M+ -> item count: 47722 <- time: Sun Nov 19 13:24:56 2017
Res: 496  perl5.18 0.0  2662M+ -> item count: 50389 <- time: Sun Nov 19 13:25:03 2017
Res: 496  perl5.18 0.0  2810M+ -> item count: 53083 <- time: Sun Nov 19 13:25:10 2017
Res: 496  perl5.18 0.0  2958M+ -> item count: 55745 <- time: Sun Nov 19 13:25:17 2017
Res: 496  perl5.18 0.0  3106M+ -> item count: 57955 <- time: Sun Nov 19 13:25:24 2017
Res: 496  perl5.18 0.0  3253M+ -> item count: 59924 <- time: Sun Nov 19 13:25:31 2017
Res: 496  perl5.18 0.0  3402M+ -> item count: 61742 <- time: Sun Nov 19 13:25:38 2017
Res: 496  perl5.18 0.0  3550M+ -> item count: 63373 <- time: Sun Nov 19 13:25:45 2017
Res: 496  perl5.18 0.0  3698M+ -> item count: 64954 <- time: Sun Nov 19 13:25:52 2017
Res: 496  perl5.18 0.0  3845M+ -> item count: 66589 <- time: Sun Nov 19 13:25:59 2017
Res: 496  perl5.18 0.0  3993M+ -> item count: 68165 <- time: Sun Nov 19 13:26:06 2017
Res: 496  perl5.18 0.0  4141M+ -> item count: 69717 <- time: Sun Nov 19 13:26:13 2017
Res: 496  perl5.18 0.0  4289M+ -> item count: 71320 <- time: Sun Nov 19 13:26:20 2017
Res: 496  perl5.18 0.0  4380M+ -> item count: 73202 <- time: Sun Nov 19 13:26:27 2017
Res: 496  perl5.18 0.0  4384M+ -> item count: 75413 <- time: Sun Nov 19 13:26:34 2017
Res: 496  perl5.18 0.0  4280M+ -> item count: 77457 <- time: Sun Nov 19 13:26:41 2017
Res: 496  perl5.18 0.0  4181M+ -> item count: 79444 <- time: Sun Nov 19 13:26:48 2017
Res: 496  perl5.18 0.0  4094M+ -> item count: 81443 <- time: Sun Nov 19 13:26:55 2017
Res: 496  perl5.18 0.0  3939M+ -> item count: 83351 <- time: Sun Nov 19 13:27:02 2017
Res: 496  perl5.18 0.0  3839M+ -> item count: 85322 <- time: Sun Nov 19 13:27:09 2017
Res: 496  perl5.18 0.0  3727M+ -> item count: 87307 <- time: Sun Nov 19 13:27:16 2017
Res: 496  perl5.18 0.0  3629M+ -> item count: 89305 <- time: Sun Nov 19 13:27:23 2017
Res: 496  perl5.18 0.0  3521M+ -> item count: 91275 <- time: Sun Nov 19 13:27:30 2017
Res: 496  perl5.18 0.0  3418M+ -> item count: 93298 <- time: Sun Nov 19 13:27:37 2017
Res: 496  perl5.18 0.0  3299M+ -> item count: 95339 <- time: Sun Nov 19 13:27:44 2017
Res: 496  perl5.18 0.0  3189M+ -> item count: 97398 <- time: Sun Nov 19 13:27:51 2017
Res: 496  perl5.18 0.0  3141M+ -> item count: 99449 <- time: Sun Nov 19 13:27:58 2017
Res: 496  perl5.18 0.0  2977M+ -> item count: 101543 <- time: Sun Nov 19 13:28:05 2017
Res: 496  perl5.18 0.0  2857M+ -> item count: 103519 <- time: Sun Nov 19 13:28:12 2017
Res: 496  perl5.18 0.0  2748M+ -> item count: 105574 <- time: Sun Nov 19 13:28:19 2017
Res: 496  perl5.18 0.0  2643M+ -> item count: 107550 <- time: Sun Nov 19 13:28:26 2017
Res: 496  perl5.18 0.0  2591M+ -> item count: 109574 <- time: Sun Nov 19 13:28:33 2017
Res: 496  perl5.18 0.0  2506M+ -> item count: 111562 <- time: Sun Nov 19 13:28:40 2017
Res: 496  perl5.18 0.0  2389M+ -> item count: 113485 <- time: Sun Nov 19 13:28:47 2017
Res: 496  perl5.18 0.0  2280M+ -> item count: 115455 <- time: Sun Nov 19 13:28:54 2017
Res: 496  perl5.18 0.0  2100M+ -> item count: 117391 <- time: Sun Nov 19 13:29:01 2017
(Parse finished)
Res: 496  perl5.18 0.0  893M+ -> item count: 119335 <- time: Sun Nov 19 13:31:41 2017
(Purge finished)
Res: 496  perl5.18 0.0  5144M+ -> item count: 119335 <- time: Sun Nov 19 13:32:27 2017

JOB COMPLETE.
119335 items processed.
keve@deimos:DATA$

script perl script:

keve@deimos:DATA$ ./monitorTWIGprocess.sh 496
2017 Nov 19 Vas 13:23:11 CET ::> 496  perl5.18 0.0  291M+ 0B   N/A  
2017 Nov 19 Vas 13:23:17 CET ::> 496  perl5.18 0.0  434M+ 0B   N/A  
2017 Nov 19 Vas 13:23:23 CET ::> 496  perl5.18 0.0  559M+ 0B   N/A  
2017 Nov 19 Vas 13:23:30 CET ::> 496  perl5.18 0.0  684M+ 0B   N/A  
2017 Nov 19 Vas 13:23:36 CET ::> 496  perl5.18 0.0  810M+ 0B   N/A  
2017 Nov 19 Vas 13:23:42 CET ::> 496  perl5.18 0.0  936M+ 0B   N/A  
2017 Nov 19 Vas 13:23:48 CET ::> 496  perl5.18 0.0  1061M+ 0B   N/A  
2017 Nov 19 Vas 13:23:54 CET ::> 496  perl5.18 0.0  1185M+ 0B   N/A  
2017 Nov 19 Vas 13:24:00 CET ::> 496  perl5.18 0.0  1328M+ 0B   N/A  
2017 Nov 19 Vas 13:24:06 CET ::> 496  perl5.18 0.0  1463M+ 0B   N/A  
2017 Nov 19 Vas 13:24:12 CET ::> 496  perl5.18 0.0  1589M+ 0B   N/A  
2017 Nov 19 Vas 13:24:18 CET ::> 496  perl5.18 0.0  1715M+ 0B   N/A  
2017 Nov 19 Vas 13:24:24 CET ::> 496  perl5.18 0.0  1840M+ 0B   N/A  
2017 Nov 19 Vas 13:24:30 CET ::> 496  perl5.18 0.0  1964M+ 0B   N/A  
2017 Nov 19 Vas 13:24:36 CET ::> 496  perl5.18 0.0  2090M+ 0B   N/A  
2017 Nov 19 Vas 13:24:43 CET ::> 496  perl5.18 0.0  2216M+ 0B   N/A  
2017 Nov 19 Vas 13:24:49 CET ::> 496  perl5.18 0.0  2365M+ 0B   N/A  
2017 Nov 19 Vas 13:24:55 CET ::> 496  perl5.18 0.0  2494M+ 0B   N/A  
2017 Nov 19 Vas 13:25:01 CET ::> 496  perl5.18 0.0  2620M+ 0B   N/A  
2017 Nov 19 Vas 13:25:07 CET ::> 496  perl5.18 0.0  2745M+ 0B   N/A  
2017 Nov 19 Vas 13:25:13 CET ::> 496  perl5.18 0.0  2870M+ 0B   N/A  
2017 Nov 19 Vas 13:25:19 CET ::> 496  perl5.18 0.0  2996M+ 0B   N/A  
2017 Nov 19 Vas 13:25:25 CET ::> 496  perl5.18 0.0  3121M+ 0B   N/A  
2017 Nov 19 Vas 13:25:31 CET ::> 496  perl5.18 0.0  3253M+ 0B   N/A  
2017 Nov 19 Vas 13:25:37 CET ::> 496  perl5.18 0.0  3399M+ 0B   N/A  
2017 Nov 19 Vas 13:25:43 CET ::> 496  perl5.18 0.0  3524M+ 0B   N/A  
2017 Nov 19 Vas 13:25:50 CET ::> 496  perl5.18 0.0  3649M+ 0B   N/A  
2017 Nov 19 Vas 13:25:56 CET ::> 496  perl5.18 0.0  3774M+ 0B   N/A  
2017 Nov 19 Vas 13:26:02 CET ::> 496  perl5.18 0.0  3899M+ 0B   N/A  
2017 Nov 19 Vas 13:26:08 CET ::> 496  perl5.18 0.0  4024M+ 0B   N/A  
2017 Nov 19 Vas 13:26:14 CET ::> 496  perl5.18 0.0  4149M+ 0B   N/A  
2017 Nov 19 Vas 13:26:20 CET ::> 496  perl5.18 0.0  4289M+ 0B   N/A  
2017 Nov 19 Vas 13:26:26 CET ::> 496  perl5.18 0.0  4370M+ 0B   N/A  
2017 Nov 19 Vas 13:26:32 CET ::> 496  perl5.18 0.0  4409M+ 0B   N/A  
2017 Nov 19 Vas 13:26:38 CET ::> 496  perl5.18 0.0  4319M+ 0B   N/A  
2017 Nov 19 Vas 13:26:44 CET ::> 496  perl5.18 0.0  4231M+ 0B   N/A  
2017 Nov 19 Vas 13:26:51 CET ::> 496  perl5.18 0.0  4152M+ 0B   N/A  
2017 Nov 19 Vas 13:26:57 CET ::> 496  perl5.18 0.0  4079M+ 0B   N/A  
2017 Nov 19 Vas 13:27:03 CET ::> 496  perl5.18 0.0  3934M+ 0B   N/A  
2017 Nov 19 Vas 13:27:09 CET ::> 496  perl5.18 0.0  3839M+ 0B   N/A  
2017 Nov 19 Vas 13:27:15 CET ::> 496  perl5.18 0.0  3741M+ 0B   N/A  
2017 Nov 19 Vas 13:27:21 CET ::> 496  perl5.18 0.0  3654M+ 0B   N/A  
2017 Nov 19 Vas 13:27:27 CET ::> 496  perl5.18 0.0  3566M+ 0B   N/A  
2017 Nov 19 Vas 13:27:33 CET ::> 496  perl5.18 0.0  3473M+ 0B   N/A  
2017 Nov 19 Vas 13:27:39 CET ::> 496  perl5.18 0.0  3377M+ 0B   N/A  
2017 Nov 19 Vas 13:27:45 CET ::> 496  perl5.18 0.0  3286M+ 0B   N/A  
2017 Nov 19 Vas 13:27:51 CET ::> 496  perl5.18 0.0  3189M+ 0B   N/A  
2017 Nov 19 Vas 13:27:58 CET ::> 496  perl5.18 0.0  3141M+ 0B   N/A  
2017 Nov 19 Vas 13:28:04 CET ::> 496  perl5.18 0.0  2987M+ 0B   N/A  
2017 Nov 19 Vas 13:28:10 CET ::> 496  perl5.18 0.0  2881M+ 0B   N/A  
2017 Nov 19 Vas 13:28:16 CET ::> 496  perl5.18 0.0  2796M+ 0B   N/A  
2017 Nov 19 Vas 13:28:22 CET ::> 496  perl5.18 0.0  2707M+ 0B   N/A  
2017 Nov 19 Vas 13:28:28 CET ::> 496  perl5.18 0.0  2615M+ 0B   N/A  
2017 Nov 19 Vas 13:28:34 CET ::> 496  perl5.18 0.0  2597M+ 0B   N/A  
2017 Nov 19 Vas 13:28:40 CET ::> 496  perl5.18 0.0  2499M+ 0B   N/A  
2017 Nov 19 Vas 13:28:46 CET ::> 496  perl5.18 0.0  2395M+ 0B   N/A  
2017 Nov 19 Vas 13:28:53 CET ::> 496  perl5.18 0.0  2310M+ 0B   N/A  
2017 Nov 19 Vas 13:28:59 CET ::> 496  perl5.18 0.0  2208M+ 0B   N/A  
2017 Nov 19 Vas 13:29:05 CET ::> 496  perl5.18 0.0  2052M+ 0B   N/A  
2017 Nov 19 Vas 13:29:11 CET ::> 496  perl5.18 0.0  1943M+ 0B   N/A  
2017 Nov 19 Vas 13:29:17 CET ::> 496  perl5.18 0.0  1832M+ 0B   N/A  
2017 Nov 19 Vas 13:29:23 CET ::> 496  perl5.18 0.0  1761M+ 0B   N/A  
2017 Nov 19 Vas 13:29:29 CET ::> 496  perl5.18 0.0  1669M+ 0B   N/A  
2017 Nov 19 Vas 13:29:35 CET ::> 496  perl5.18 0.0  1563M+ 0B   N/A  
2017 Nov 19 Vas 13:29:41 CET ::> 496  perl5.18 0.0  1452M+ 0B   N/A  
2017 Nov 19 Vas 13:29:47 CET ::> 496  perl5.18 0.0  1340M+ 0B   N/A  
2017 Nov 19 Vas 13:29:54 CET ::> 496  perl5.18 0.0  1275M+ 0B   N/A  
2017 Nov 19 Vas 13:30:00 CET ::> 496  perl5.18 0.0  1231M+ 0B   N/A  
2017 Nov 19 Vas 13:30:06 CET ::> 496  perl5.18 0.0  1142M+ 0B   N/A  
2017 Nov 19 Vas 13:30:12 CET ::> 496  perl5.18 0.0  1082M+ 0B   N/A  
2017 Nov 19 Vas 13:30:18 CET ::> 496  perl5.18 0.0  1042M+ 0B   N/A  
2017 Nov 19 Vas 13:30:24 CET ::> 496  perl5.18 0.0  1000M+ 0B   N/A  
2017 Nov 19 Vas 13:30:30 CET ::> 496  perl5.18 0.0  958M+ 0B   N/A  
2017 Nov 19 Vas 13:30:36 CET ::> 496  perl5.18 0.0  977M+ 0B   N/A  
2017 Nov 19 Vas 13:30:42 CET ::> 496  perl5.18 0.0  941M+ 0B   N/A  
2017 Nov 19 Vas 13:30:48 CET ::> 496  perl5.18 0.0  924M+ 0B   N/A  
2017 Nov 19 Vas 13:30:55 CET ::> 496  perl5.18 0.0  956M+ 0B   N/A  
2017 Nov 19 Vas 13:31:01 CET ::> 496  perl5.18 0.0  895M+ 0B   N/A  
2017 Nov 19 Vas 13:31:07 CET ::> 496  perl5.18 0.0  911M+ 0B   N/A  
2017 Nov 19 Vas 13:31:13 CET ::> 496  perl5.18 0.0  895M+ 0B   N/A  
2017 Nov 19 Vas 13:31:19 CET ::> 496  perl5.18 0.0  876M+ 0B   N/A  
2017 Nov 19 Vas 13:31:25 CET ::> 496  perl5.18 0.0  825M+ 0B   N/A  
2017 Nov 19 Vas 13:31:31 CET ::> 496  perl5.18 0.0  812M+ 0B   N/A  
2017 Nov 19 Vas 13:31:37 CET ::> 496  perl5.18 0.0  812M+ 0B   N/A  
2017 Nov 19 Vas 13:31:43 CET ::> 496  perl5.18 0.0  987M+ 0B   N/A  
2017 Nov 19 Vas 13:31:49 CET ::> 496  perl5.18 0.0  2058M+ 0B   N/A  
2017 Nov 19 Vas 13:31:56 CET ::> 496  perl5.18 0.0  2947M+ 0B   N/A  
2017 Nov 19 Vas 13:32:02 CET ::> 496  perl5.18 0.0  3178M+ 0B   N/A  
2017 Nov 19 Vas 13:32:08 CET ::> 496  perl5.18 0.0  3301M+ 0B   N/A  
2017 Nov 19 Vas 13:32:14 CET ::> 496  perl5.18 0.0  3429M+ 0B   N/A  
2017 Nov 19 Vas 13:32:20 CET ::> 496  perl5.18 0.0  4247M+ 0B   N/A  
2017 Nov 19 Vas 13:32:26 CET ::> 496  perl5.18 0.0  4674M+ 0B   N/A  
2017 Nov 19 Vas 13:32:32 CET ::> 496  perl5.18 0.0  5362M+ 0B   N/A  
2017 Nov 19 Vas 13:32:38 CET ::> 
^C
keve@deimos:DATA$

, . . , 13:26:57 , 987M, script . , , $t->purge();?

.. script $twig->purge() unless ($product_counter > 119334);, (119335-) , . , .

+2

Source: https://habr.com/ru/post/1689514/

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