On Mon, 2008-11-24 at 19:39 +0900, Mikio Kishi wrote:
> - NAT mode
> - traffic generator is web clients
> - sending HTTP GET requests
> - traffic receiver is real server
> - (2) LVS host spec
> hardware: CPU: Xeon 2.33GHz x 8(core)
The number of cores in this case is not relevant.
> - (4) problem
> When the CPS(new connections/sec) become over 15,000,
> %CPU of ksoftirqd "jump" to 100% !!!
What network card are you using on the director? There's only so many
interrupts you can generate from one NIC before the CPU wedges - and in
most cases every packet generates in interrupt. If you're using
plain-old-PCI, you get less throughput than more advanced PCI variants.
There was a thread about this recently. Search the archives for it.