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Rick Jones wrote: >> The number of contextswitches seems enourmous.. over 120.000 sometimes. >> When transmitting around the same amount of data (4xgigabit bonded with >> 802.3ad) 4x110MB/s the amount of contextswitches only reaches 3-4.000. I >> have no idea if this has any relevance. >> >> Should this setup not be able to fill the pipe? > > Into which slot was the Neptune inserted? (sure will be nice to have > Alex Chiang's pci slot id patch in mainline one of these days :) > > Is that slot x4, x8, x16? I can find out excactly .. on monday. But shouldn't x4 be enough anyway? wikipedia says 250MB/s pr. lane. And no slots is less than x4, so I thought that it didn't matter to me. > To which cpu(s) were the neptune's interrupts assigned? (grep <ethN> > /proc/interrupts) Several > Is the irqbalanced running? Yes. I started by not running it, but saw that cpu 0 was saturated by ksoftirqd > Were any of the 16 CPUs in the system saturated during the test? (top > with all CPUs displayed) Yes.. Cpu12 : 34.2%us, 5.9%sy, 0.0%ni, 0.0%id, 14.5%wa, 1.0%hi, 44.4%si, 0.0%st All others have idle time. > Do you have/know of any diagrams showing the way the I/O slots are wired > to the rest of the system? I havent dug into that. Probably naive, as I as, I expected som hardware guys as Sun to have taken care of that, when I bought the recommended 10g card for their own server. > Have you tried any tests without any filesystem involvement? no not yet. I'll try that. -- Jesper -- 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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