[Rio-pm] Ajuda com Threads - tempo de abertura
Bruno Buss
bruno.buss em gmail.com
Segunda Julho 12 13:59:31 PDT 2010
Talvez você queira diminuir o timeout padrão:
sub PING_TIMEOUT () { 5 }
(No seu script era 1 segundo se não me engano)
No POE::Component::Client::Ping->spawn, talvez você queira passar a
opção Parallelism, ex:
POE::Component::Client::Ping->spawn(
Alias => 'pinger', # The component's name will be "pinger".
Timeout => PING_TIMEOUT, # The default ping timeout.
Parallelism => 128
);
2010/7/12 João André Simioni <jasimioni em gmail.com>
> 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
>
--
Bruno C. Buss
http://brunobuss.wordpress.com/
http://www.dcc.ufrj.br/~brunobuss/
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