Messages in this thread | | | From | Robert Olsson <> | Date | Wed, 31 Mar 2004 00:33:11 +0200 | Subject | Re: route cache DoS testing and softirqs |
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Andrea Arcangeli writes:
> He posted these numbers: > > softirq_count, ksoftirqd_count and other_softirq_count shows - > > CPU 0 : 638240 554 637686 > CPU 1 : 102316 1 102315 > CPU 2 : 675696 557 675139 > CPU 3 : 102305 0 102305 > > that means nothing runs in ksoftirqd for Dipankar, so he cannot be using > NAPI. > > Either that or I'm misreading his numbers, or his stats results are wrong.
Well we have to ask Dipankar... But I'll buy a beer if it's not on. :)
Anyway w. NAPI enabled. 2 * 304 kpps DoS flows into eth0, eth2. Flows are 2 * 10 Millions 64 byte pkts. 32 k buckets routehash. Full Internet routing means ~130 k routes. Linux 2.6.4 2*2.66 MHz XEON.
26: 896 0 IO-APIC-level eth0 27: 25197 0 IO-APIC-level eth1 28: 8 579 IO-APIC-level eth2 29: 10 26112 IO-APIC-level eth3
T-put is seen on output dev. eth1, eth3. So about 16% of incoming load,
eth0 1500 0 1577468 9631270 9631270 8422828 237 0 0 0 BRU eth1 1500 0 42 0 0 0 1573355 0 0 0 BRU eth2 1500 0 1636154 9603432 9603432 8363849 41 0 0 0 BRU eth3 1500 0 54 0 0 0 1632274 0 0 0 BRU
And lots of . . printk: 1898 messages suppressed. dst cache overflow printk: 829 messages suppressed. dst cache overflow
Cheers. --ro - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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