[Rio-pm] Ajuda com Threads - tempo de abertura
Thiago Glauco Sanchez
thiagoglauco em ticursos.net
Segunda Julho 12 14:27:34 PDT 2010
Em 12/07/2010 17:54, João André Simioni escreveu:
Você modificou o meu código ou do pinging_multiple_hosts?
E, desculpe a expressão: Caraca... seus hosts precisam ser verificados
em loops de menos que 11 minutos com ping!!
Respondendo: Sim, dá para mudar... Mas, como solução "provisória", já
que o load nem fez cócegas, execute 2 ou 3 instâncias do código
dividindo os hosts.
> Thiago,
>
> dando uma bem de vagabundo, não li nada do POE, só modifiquei o
> código abaixo para pingar todos os meus Hosts.
>
> Mas ele está fazendo poucos processos paralelos. O tempo total de
> testes está 11 minutos com o POE, e o load nem faz cócegas. Sabem
> fácil como mexer nisso?
>
> Obrigado
>
> 2010/7/12 Thiago Glauco Sanchez<thiagoglauco em ticursos.net>:
>
>> Puxa... eu sou muito "toupeira"... já tem código de exemplo para isso feito
>> e muito mais pratico e completo que o meu...:
>>
>> http://poe.perl.org/?POE_Cookbook/Pinging_Multiple_Hosts
>>
>> Em 12/07/2010 15:52, Thiago Glauco Sanchez escreveu:
>>
>>> Um pequeno exemplo que eu criei apenas para ilustrar... o pessoal que
>>> desejar incrementar, por favor, be my guest.
>>>
>>> use 5.12.0;
>>> use POE;
>>> use Net::Ping;
>>> POE::Session->create(
>>> inline_states => {
>>> _start => sub {
>>> my ($kernel) = $_[KERNEL];
>>> print "Setting up a session\n";
>>> $kernel->yield("ping");
>>> },
>>>
>>> ping => sub{my ($kernel) = $_[KERNEL];
>>> my @ping = `ping -n 1 www.ticursos.net`;
>>> map{say "ping externo ok" if $_ =~ /Perdidos = 0/ } @ping;
>>> $kernel->delay_set("net_ping" => 3);
>>>
>>> },
>>>
>>> net_ping => sub{ my ($kernel) = $_[KERNEL];
>>> my $p = Net::Ping->new();
>>> $p->port_number(80);
>>> my ($ret, $duration, $ip) = $p->ping('ticursos.net');
>>> say "net::ping ok" if $ret;
>>> $p->close();
>>> $kernel->delay_set("ping" => 3)
>>> },
>>> },
>>> );
>>>
>>> say "Iniciando o Kernel...";
>>> $poe_kernel->run( );
>>> exit(0);
>>>
>>> sub start {
>>> my ($kernel) = $_[KERNEL];
>>> say "Iniciando os testes com POE";
>>> $kernel->yield("ping");
>>> }
>>>
>>>
>>> Em 12/07/2010 15:38, João André Simioni escreveu:
>>>
>>>> O pessoal comentou - eu vou dar uma olhada nele com atenção.
>>>>
>>>> Obrigado pela dica.
>>>>
>>>> 2010/7/12 Thiago Glauco Sanchez<thiagoglauco em ticursos.net>:
>>>>
>>>>> O Perl tem um framework para aplicações em rede e Multitarefa chamada
>>>>> POE
>>>>> que
>>>>> "Provide a cooperative scheduling and multitasking environment rivalling
>>>>> threads and IPC"
>>>>> Não seria o caso de estudarmos a possibilidade de usar esse framework no
>>>>> seu
>>>>> sistema???
>>>>>
>>>>> Em 11/07/2010 23:57, João André Simioni escreveu:
>>>>>
>>>>>> Foi um typo - erro de digitação - o Net::Ping testa TCP e UDP. O ping
>>>>>> externo ICMP.
>>>>>>
>>>>>> Mas assim, eu preciso resolver o problema com esse teste em Perl -
>>>>>> como eu disse, essa parte do código é só um pedaço de um sistema
>>>>>> maior. SNMP já é usado para várias outras coisas, mas dependem de
>>>>>> access lists em routers e eu não tenho como liberar.
>>>>>>
>>>>>> []'s
>>>>>>
>>>>>> 2010/7/11 Thiago Glauco Sanchez<thiagoglauco em ticursos.net>:
>>>>>>
>>>>>>
>>>>>>> O que eu quero dizer: você testou com o ping externo que é um teste
>>>>>>> icmp...
>>>>>>> depois fez outro teste icmp com o Net::Ping...
>>>>>>>
>>>>>>> Não seria mais interessante testar de outra forma?
>>>>>>>
>>>>>>> $p = Net::Ping->new("tcp", 2);
>>>>>>> $p->port_number(getservbyname("http", "tcp"));
>>>>>>>
>>>>>>> Mais umas coisas: Suas máquinas/equipamentos em teste estão via
>>>>>>> internet
>>>>>>> ou
>>>>>>> rede local?
>>>>>>> Já pensou em usar SNMP? Já tive um problema parecido e iria utilizar
>>>>>>> um
>>>>>>> processo para cada equipamento por desempenho e acabai optando por
>>>>>>> utilizar
>>>>>>> o Net:SNMP
>>>>>>> que permite utilizar uma função de callback em vez de utilizar um
>>>>>>> processo
>>>>>>> para cada equipamento. Eu mando uma requisição para todos os
>>>>>>> equipamentos
>>>>>>> e
>>>>>>> conforme eles respondem
>>>>>>> a função de call-back trata a requisição.
>>>>>>>
>>>>>>> Porém, não conheço o seu ambiente. Apenas acho que criar 4000 threads
>>>>>>> não
>>>>>>> seja a melhor solução.
>>>>>>>
>>>>>>>
>>>>>>> Em 11/07/2010 23:18, João André Simioni escreveu:
>>>>>>>
>>>>>>>
>>>>>>>> É typo - já está certo no código. ICMP vai via comando externo, UDP e
>>>>>>>> TCP via Net::Ping.
>>>>>>>>
>>>>>>>> Com relação aos testes, é normal um momento de sobrecarga causar a
>>>>>>>> não
>>>>>>>> resposta de testes - essas sobrecargas não devem duram mais que 5
>>>>>>>> segundos. Por isso o sleep - assim eu faço o mesmo teste 3x, com
>>>>>>>> intervalos de 3 segundos.
>>>>>>>>
>>>>>>>> []'s
>>>>>>>>
>>>>>>>> On Sun, Jul 11, 2010 at 10:31 PM, Blabos de Blebe<blabos em gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> Não seria um typo?
>>>>>>>>>
>>>>>>>>> icmp -> ping;
>>>>>>>>> tcp e udp -> Net::Ping
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Sun, Jul 11, 2010 at 6:42 PM, Thiago Glauco Sanchez
>>>>>>>>> <thiagoglauco em ticursos.net> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Sim sim, entendi sua preocupação.
>>>>>>>>>> Mas em vez de:
>>>>>>>>>>
>>>>>>>>>> for (1..3) {
>>>>>>>>>> my $ping = `/bin/ping -c 1 -w 1 $ip`;
>>>>>>>>>>
>>>>>>>>>> não seria melhor já mandar pingar as 3 vezes no comando ou apenas
>>>>>>>>>> 1?
>>>>>>>>>> Você
>>>>>>>>>> está gerando 3 processos externos sem necessidade real.
>>>>>>>>>>
>>>>>>>>>> outra... o comando ping já não é icmp?
>>>>>>>>>> my $p = Net::Ping->new('icmp')???
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Em 11/07/2010 17:04, João André Simioni escreveu:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Eu quero fazer o ping de 3 formas - UDP Echo / TCP Echo e ICMP
>>>>>>>>>>> Echo.
>>>>>>>>>>> Alguns clientes tem filtros e assim eu evito falsos positivos.
>>>>>>>>>>>
>>>>>>>>>>> Net::Ping mesmo com root tem resultados incoerentes quando uso
>>>>>>>>>>> ICMP e
>>>>>>>>>>> Threads.
>>>>>>>>>>>
>>>>>>>>>>> []'s
>>>>>>>>>>>
>>>>>>>>>>> On Sun, Jul 11, 2010 at 4:56 PM, Thiago Glauco Sanchez
>>>>>>>>>>> <thiagoglauco em ticursos.net> wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> Endosso a solução do Lorn. Use o POE.
>>>>>>>>>>>>
>>>>>>>>>>>> E cara... pra que isso??
>>>>>>>>>>>>
>>>>>>>>>>>> sub checkIp {
>>>>>>>>>>>> my $ip = shift;
>>>>>>>>>>>> my $pingOk = 0;
>>>>>>>>>>>>
>>>>>>>>>>>> eval {
>>>>>>>>>>>> for (1..3) {
>>>>>>>>>>>> my $ping = `/bin/ping -c 1 -w 1 $ip`;
>>>>>>>>>>>>
>>>>>>>>>>>> if (grep { / 0% packet loss/ } $ping) {
>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>> return 1;
>>>>>>>>>>>> }
>>>>>>>>>>>>
>>>>>>>>>>>> if ($pingOk == 0) {
>>>>>>>>>>>> my $p = Net::Ping->new('icmp');
>>>>>>>>>>>> $p->service_check(1);
>>>>>>>>>>>> if ($p->ping($ip, 1)) {
>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>> return 1;
>>>>>>>>>>>> }
>>>>>>>>>>>> }
>>>>>>>>>>>>
>>>>>>>>>>>> if ($pingOk == 0) {
>>>>>>>>>>>> my $p = Net::Ping->new('udp');
>>>>>>>>>>>> $p->service_check(1);
>>>>>>>>>>>> if ($p->ping($ip, 1)) {
>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>> return 1;
>>>>>>>>>>>> }
>>>>>>>>>>>> }
>>>>>>>>>>>>
>>>>>>>>>>>> sleep 3;
>>>>>>>>>>>> }
>>>>>>>>>>>> };
>>>>>>>>>>>>
>>>>>>>>>>>> Para pingar com ping externo, depois com o Net::Ping via icmp e
>>>>>>>>>>>> depois
>>>>>>>>>>>> com
>>>>>>>>>>>> net::Ping udp? Ah... se não me engano, Net::Ping precisa de
>>>>>>>>>>>> permissão
>>>>>>>>>>>> root
>>>>>>>>>>>> para retornar um icmp de forma correta...
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Em 09/07/2010 17:48, João André Simioni escreveu:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Caros,
>>>>>>>>>>>>>
>>>>>>>>>>>>> tenho um script para testar cerca de 4700 equipamentos, usando
>>>>>>>>>>>>> ping.
>>>>>>>>>>>>> Queria usar cerca 250 threads para isso, então o que eu fiz foi
>>>>>>>>>>>>> quebrar o grupo de 4300 em grupos 18 elementos e abri uma thread
>>>>>>>>>>>>> para
>>>>>>>>>>>>> cada.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Não há nenhum problema com o código, o que acontece é que o
>>>>>>>>>>>>> tempo
>>>>>>>>>>>>> de
>>>>>>>>>>>>> abertura das threads é muito alto. E quanto mais threads eu
>>>>>>>>>>>>> abro,
>>>>>>>>>>>>> maior o tempo para abertura das próximas. As primeiras abrem em
>>>>>>>>>>>>> 30ms,
>>>>>>>>>>>>> mas perto da thread 70 esse tempo já vai para quase 1 segundo.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Vocês sabem como otimizar esse tempo de abertura? Ou alguma
>>>>>>>>>>>>> outra
>>>>>>>>>>>>> solução?
>>>>>>>>>>>>>
>>>>>>>>>>>>> Segue o output do script como exemplo:
>>>>>>>>>>>>> Para 4677 cpes, e 250 threads, tenho no final 246 grupos, com 19
>>>>>>>>>>>>> elementos
>>>>>>>>>>>>> cada
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.61858
>>>>>>>>>>>>> Created thread 1 (1) - took 0.030138 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.92080
>>>>>>>>>>>>> Created thread 2 (2) - took 0.042668 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.134968
>>>>>>>>>>>>> Created thread 3 (3) - took 0.064245 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.199430
>>>>>>>>>>>>> Created thread 4 (4) - took 0.082642 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.282278
>>>>>>>>>>>>> Created thread 5 (5) - took 0.128257 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.410769
>>>>>>>>>>>>> Created thread 6 (6) - took 0.136458 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.547383
>>>>>>>>>>>>> Created thread 7 (7) - took 0.208085 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.755594
>>>>>>>>>>>>> Created thread 8 (8) - took 0.173014 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:50 2010.928756
>>>>>>>>>>>>> Created thread 9 (9) - took 0.132713 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:51 2010.61608
>>>>>>>>>>>>> Created thread 10 (10) - took 0.127795 seconds to create
>>>>>>>>>>>>> Trying to create thread in Fri Jul 9 17:46:51 2010.189536
>>>>>>>>>>>>> Created thread 11 (11) - took 0.301836 seconds to create
>>>>>>>>>>>>>
>>>>>>>>>>>>> Obrigado
>>>>>>>>>>>>>
>>>>>>>>>>>>> João André Simioni
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> #!/usr/bin/perl
>>>>>>>>>>>>>
>>>>>>>>>>>>> use strict;
>>>>>>>>>>>>> use DBI;
>>>>>>>>>>>>> use Net::Ping;
>>>>>>>>>>>>> use Time::HiRes qw/usleep tv_interval gettimeofday/;
>>>>>>>>>>>>> use threads ('yield', 'stack_size' => 32*4096, 'exit'
>>>>>>>>>>>>> =>
>>>>>>>>>>>>> 'threads_only', 'stringify');
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $host = '192.168.160.179';
>>>>>>>>>>>>> my $sid = 'HOMOLOG';
>>>>>>>>>>>>> my $user = 'mac_user';
>>>>>>>>>>>>> my $pass = 'mac_user';
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $dbh = DBI->connect("dbi:Oracle:host=$host;sid=$sid", $user,
>>>>>>>>>>>>> $pass,
>>>>>>>>>>>>> { AutoCommit => 1 });
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $sth = $dbh->prepare('SELECT CPE_ID, CLIENTE_ID, CPE_DESC,
>>>>>>>>>>>>> CPE_IP_WAN, CPE_NODE, CPE_IF FROM MAC_CPE WHERE CPE_PING = ? AND
>>>>>>>>>>>>> CPE_ATIVO = ?');
>>>>>>>>>>>>> $sth->execute('1', 'A');
>>>>>>>>>>>>>
>>>>>>>>>>>>> my @cpes;
>>>>>>>>>>>>>
>>>>>>>>>>>>> while (my (@row) = $sth->fetchrow_array) {
>>>>>>>>>>>>> push @cpes, [ @row ];
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> $dbh->disconnect();
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $maxThreads = 250;
>>>>>>>>>>>>> my $total = @cpes;
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $cpePerThread = int($total / $maxThreads);
>>>>>>>>>>>>>
>>>>>>>>>>>>> my @toMonitor;
>>>>>>>>>>>>> my $i = 0;
>>>>>>>>>>>>> my $c = 0;
>>>>>>>>>>>>>
>>>>>>>>>>>>> foreach my $cpe (@cpes) {
>>>>>>>>>>>>> push @{$toMonitor[$i]}, $cpe;
>>>>>>>>>>>>> $c++;
>>>>>>>>>>>>>
>>>>>>>>>>>>> if ($c> $cpePerThread) {
>>>>>>>>>>>>> $i++;
>>>>>>>>>>>>> $c = 0;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> print "Para $total cpes, e $maxThreads threads, tenho no final
>>>>>>>>>>>>> $i
>>>>>>>>>>>>> grupos, com ", scalar @{$toMonitor[0]}, " elementos cada\n";
>>>>>>>>>>>>>
>>>>>>>>>>>>> sub processResult {
>>>>>>>>>>>>> my $r = shift;
>>>>>>>>>>>>> if (ref $r ne 'ARRAY') {
>>>>>>>>>>>>> print STDERR "Erro na thread\n";
>>>>>>>>>>>>> return 0;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> my ($result, $host, $ifs) = @$r;
>>>>>>>>>>>>>
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> sub testeClient {
>>>>>>>>>>>>> my $threadNum = shift;
>>>>>>>>>>>>> my $cpeGroup = shift;
>>>>>>>>>>>>> foreach my $cpe (@{$cpeGroup}) {
>>>>>>>>>>>>> my ($cpeId, $clientId, $cpeDesc, $cpeIp, $cpeNode,
>>>>>>>>>>>>> $cpeIf)
>>>>>>>>>>>>> =
>>>>>>>>>>>>> @$cpe;
>>>>>>>>>>>>> my $pingOk =&checkIp($cpeIp);
>>>>>>>>>>>>> my $status = $pingOk ? 'RESPONDE' : 'MORTO';
>>>>>>>>>>>>> # print join(", ", $threadNum, $cpeId, $clientId,
>>>>>>>>>>>>> $cpeDesc,
>>>>>>>>>>>>> $cpeIp, $cpeNode, $cpeIf, $status), "\n";
>>>>>>>>>>>>> }
>>>>>>>>>>>>> # print "Finishing thread $threadNum\n";
>>>>>>>>>>>>> return([1, 0]);
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $threadCount = 1;
>>>>>>>>>>>>> foreach my $cpeGroup (@toMonitor) {
>>>>>>>>>>>>> print "Trying to create thread";
>>>>>>>>>>>>> my $t0 = [gettimeofday];
>>>>>>>>>>>>>
>>>>>>>>>>>>> print " in ", scalar localtime $t0->[0], ".", $t0->[1],
>>>>>>>>>>>>> "\n";
>>>>>>>>>>>>>
>>>>>>>>>>>>> my $thr = threads->create({scalar => '1'},
>>>>>>>>>>>>> 'testeClient',
>>>>>>>>>>>>> $threadCount, $cpeGroup);
>>>>>>>>>>>>> my $elapsed = tv_interval ( $t0, [gettimeofday]);
>>>>>>>>>>>>> print "Created thread $thr ($threadCount) - took $elapsed
>>>>>>>>>>>>> seconds
>>>>>>>>>>>>> to create\n";
>>>>>>>>>>>>> $threadCount++;
>>>>>>>>>>>>>
>>>>>>>>>>>>> while (threads->list()>= $maxThreads) {
>>>>>>>>>>>>> my @joinable = threads->list(threads::joinable);
>>>>>>>>>>>>> for (@joinable) {
>>>>>>>>>>>>> my $r = $_->join();
>>>>>>>>>>>>> &processResult($r);
>>>>>>>>>>>>> }
>>>>>>>>>>>>> usleep(10000);
>>>>>>>>>>>>> }
>>>>>>>>>>>>> my $elapsed = tv_interval ( $t0, [gettimeofday]);
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> while (threads->list()) {
>>>>>>>>>>>>> my @joinable = threads->list(threads::joinable);
>>>>>>>>>>>>> for (@joinable) {
>>>>>>>>>>>>> my $r = $_->join();
>>>>>>>>>>>>> &processResult($r);
>>>>>>>>>>>>> }
>>>>>>>>>>>>> usleep(10000);
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> sub checkIp {
>>>>>>>>>>>>> my $ip = shift;
>>>>>>>>>>>>> my $pingOk = 0;
>>>>>>>>>>>>>
>>>>>>>>>>>>> eval {
>>>>>>>>>>>>> for (1..3) {
>>>>>>>>>>>>> my $ping = `/bin/ping -c 1 -w 1 $ip`;
>>>>>>>>>>>>>
>>>>>>>>>>>>> if (grep { / 0% packet loss/ } $ping) {
>>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>>> return 1;
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> if ($pingOk == 0) {
>>>>>>>>>>>>> my $p = Net::Ping->new('icmp');
>>>>>>>>>>>>> $p->service_check(1);
>>>>>>>>>>>>> if ($p->ping($ip, 1)) {
>>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>>> return 1;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> if ($pingOk == 0) {
>>>>>>>>>>>>> my $p = Net::Ping->new('udp');
>>>>>>>>>>>>> $p->service_check(1);
>>>>>>>>>>>>> if ($p->ping($ip, 1)) {
>>>>>>>>>>>>> $pingOk = 1;
>>>>>>>>>>>>> return 1;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> }
>>>>>>>>>>>>>
>>>>>>>>>>>>> sleep 3;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> };
>>>>>>>>>>>>>
>>>>>>>>>>>>> return $pingOk;
>>>>>>>>>>>>> }
>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>> Rio-pm mailing list
>>>>>>>>>>>>> Rio-pm em pm.org
>>>>>>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> What is the sound of Perl? Is it not the sound of a wall that
>>>>>>>>>>>> people
>>>>>>>>>>>> have
>>>>>>>>>>>> stopped banging their heads against?
>>>>>>>>>>>> —Larry Wall
>>>>>>>>>>>>
>>>>>>>>>>>> Thiago Glauco Sanchez
>>>>>>>>>>>> Intrutor Perl e Redes
>>>>>>>>>>>> www.ticursos.net
>>>>>>>>>>>>
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> Rio-pm mailing list
>>>>>>>>>>>> Rio-pm em pm.org
>>>>>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> Rio-pm mailing list
>>>>>>>>>>> Rio-pm em pm.org
>>>>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> What is the sound of Perl? Is it not the sound of a wall that
>>>>>>>>>> people
>>>>>>>>>> have
>>>>>>>>>> stopped banging their heads against?
>>>>>>>>>> —Larry Wall
>>>>>>>>>>
>>>>>>>>>> Thiago Glauco Sanchez
>>>>>>>>>> Intrutor Perl e Redes
>>>>>>>>>> www.ticursos.net
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Rio-pm mailing list
>>>>>>>>>> Rio-pm em pm.org
>>>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Rio-pm mailing list
>>>>>>>>> Rio-pm em pm.org
>>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Rio-pm mailing list
>>>>>>>> Rio-pm em pm.org
>>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> --
>>>>>>> What is the sound of Perl? Is it not the sound of a wall that people
>>>>>>> have
>>>>>>> stopped banging their heads against?
>>>>>>> —Larry Wall
>>>>>>>
>>>>>>> Thiago Glauco Sanchez
>>>>>>> Intrutor Perl e Redes
>>>>>>> www.ticursos.net
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Rio-pm mailing list
>>>>>>> Rio-pm em pm.org
>>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
>>>>>> Rio-pm mailing list
>>>>>> Rio-pm em pm.org
>>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>>
>>>>>>
>>>>>>
>>>>> --
>>>>> What is the sound of Perl? Is it not the sound of a wall that people
>>>>> have
>>>>> stopped banging their heads against?
>>>>> —Larry Wall
>>>>>
>>>>> Thiago Glauco Sanchez
>>>>> Intrutor Perl e Redes
>>>>> www.ticursos.net
>>>>>
>>>>> _______________________________________________
>>>>> Rio-pm mailing list
>>>>> Rio-pm em pm.org
>>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>>
>>>>>
>>>> _______________________________________________
>>>> Rio-pm mailing list
>>>> Rio-pm em pm.org
>>>> http://mail.pm.org/mailman/listinfo/rio-pm
>>>>
>>>>
>>>
>>>
>>
>> --
>> What is the sound of Perl? Is it not the sound of a wall that people have
>> stopped banging their heads against?
>> —Larry Wall
>>
>> Thiago Glauco Sanchez
>> Intrutor Perl e Redes
>> www.ticursos.net
>>
>> _______________________________________________
>> Rio-pm mailing list
>> Rio-pm em pm.org
>> http://mail.pm.org/mailman/listinfo/rio-pm
>>
>>
> _______________________________________________
> Rio-pm mailing list
> Rio-pm em pm.org
> http://mail.pm.org/mailman/listinfo/rio-pm
>
>
--
What is the sound of Perl? Is it not the sound of a wall that people have
stopped banging their heads against?
—Larry Wall
Thiago Glauco Sanchez
Intrutor Perl e Redes
www.ticursos.net
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