Em 6 de maio de 2010 16:25, Eduardo Schoedler <eschoed...@viavale.com.br>escreveu:
> Renata Dias escreveu: > > Alguém ja se deparou com essa anomalia: > > > > # ping -s1000 -c50 -i.1 127.0.0.1 > > > > --- 127.0.0.1 ping statistics --- > > 50 packets transmitted, 49 packets received, 2.0% packet loss > > round-trip min/avg/max/stddev = 0.322/60.418/607.858/137.954 ms > > > Aqui eu fiz o teste, o resultado foi normal inclusive no consumo de > processador: > > ==> FreeBSD 6.1-RELEASE-p10 > > # ping -s1000 -c50 -i.1 127.0.0.1 > PING 127.0.0.1 (127.0.0.1): 1000 data bytes > > --- 127.0.0.1 ping statistics --- > 50 packets transmitted, 50 packets received, 0% packet loss > round-trip min/avg/max/stddev = 0.026/0.043/0.103/0.015 ms > > > > ==> FreeBSD 7.2-STABLE > > # ping -s1000 -c500 -i 0.01 127.0.0.1 > > --- 127.0.0.1 ping statistics --- > 500 packets transmitted, 500 packets received, 0.0% packet loss > round-trip min/avg/max/stddev = 0.015/0.022/0.170/0.013 ms > > > > Porém fazendo o teste com flood, houve perda: > > ==> FreeBSD 6.1-RELEASE-p10 > > # ping -f -s1000 -c5000 127.0.0.1 > > --- 127.0.0.1 ping statistics --- > 5000 packets transmitted, 3483 packets received, 30% packet loss > round-trip min/avg/max/stddev = 0.019/0.032/0.680/0.042 ms > > > ==> FreeBSD 7.2-STABLE > > # ping -s1000 -c5000 -f 127.0.0.1 > PING 127.0.0.1 (127.0.0.1): 1000 data bytes > > --- 127.0.0.1 ping statistics --- > 5000 packets transmitted, 3480 packets received, 30.4% packet loss > round-trip min/avg/max/stddev = 0.009/0.015/0.482/0.026 ms > > Mas mesmo com flood, o consumo do processador continuou normal. > > > -- > Eduardo Schoedler > > ------------------------- > Histórico: http://www.fug.com.br/historico/html/freebsd/ > Sair da lista: https://www.fug.com.br/mailman/listinfo/freebsd > Eu penso que nesse de flood ping existe a proteção do proprio freebsd: # tail -f /var/log/messages ... Limiting icmp ping response from 290 to 200 packets/sec ... Já no caso da Renata, muito provavelmente ta faltando algum tuning, mas ainda assim é preciso fazer uma contraprova pra pegar mais detalhes. Cleber -- .ılı..ılı. "Observe as estrelas e aprenda com elas." Albert Einstein ------------------------- Histórico: http://www.fug.com.br/historico/html/freebsd/ Sair da lista: https://www.fug.com.br/mailman/listinfo/freebsd