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Hello mailing list, i stand bevor a mystery and cannot explain
it J. I want to do shaping and prioritization and I have done these
following configurations and simulations. I can´t explain, that the combination
of PRIO and TBF is much better than the HTB (with the prio parameter)
alone or in combination with the SFQ. Here are my example configurations: 2
Traffic Classes http (80 = 0x50) and ssh (22 = 0x16), and in my example, I want
to prioritize the http-Traffic: HTB: the results of the simulation ist
here: HTB cumulative: http://simo.mix4web.de/up/htb_cumul.jpg HTB delay: http://simo.mix4web.de/up/htb_delay.jpg HTB with prio parameter cumulative: http://simo.mix4web.de/up/htb_cumul_prio_paramter.jpg HTB with prio parameter delay: http://simo.mix4web.de/up/htb_delay_prio_parameter.jpg #define UPLOAD 1000kbps dev eth0 1000 { egress {
class ( <$high> ) if tcp_dport == 80;
class(<$low>) if tcp_dport == 22;
htb () {
class ( rate UPLOAD, ceil UPLOAD) { /* with the prio
parameter : $high = class ( rate 700kbps, ceil UPLOAD, prio 0); */
$high = class ( rate 700kbps, ceil UPLOAD);
/* with the
prio parameter : $low = class ( rate 300kbps, ceil UPLOAD, prio 0);
*/
$low = class ( rate 300kbps, ceil UPLOAD, prio 1);
}
} } } /* 1Mbit 0.0008 = 100*8/10^6 */ every 0.0008s send TCP_PCK($tcp_dport=22) 0
x 60 /* 800kbit/s */ every 0.001s send TCP_PCK($tcp_dport=80) 0
x 60 time 2s PRIO and TBF: PRIO and TBF cumulative: http://simo.mix4web.de/up/prio_tbf_cumul.jpg PRIO and TBF delay:
http://simo.mix4web.de/up/prio_tbf_delay.jpg #define UPLOAD 1000kbps dev eth0 1000 { egress {
class ( <$high> ) if tcp_dport == 80;
class(<$low>) if tcp_dport == 22;
prio{
$high = class{ tbf (rate 700kbps, burst 1510B, mtu 1510B, limit 3000B); }
$low = class{ tbf (rate 300kbps, burst 1510B, mtu 1510B, limit 3000B); }
}
} } /* 1Mbit 0.0008 = 100*8/10^6 */ every 0.0008s send TCP_PCK($tcp_dport=22) 0
x 60 /* 800kbit/s */ every 0.001s send TCP_PCK($tcp_dport=80) 0
x 60 time 2s the delay by the combination of PRIO and
TBF is much better than by the HTB. (is it possible that pakets maybe dropped
by the combination of PRIO and TBF, that´s why the latency is so good???) Have you an idea??? thanks simo --------------------------------------------------------------------------------------------------------------------------------------------- |
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