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Kyle Sparger wrote:
>
> > of packets being sent from the real-server.
>
> The benefeit is far rarer than I anticipated. Most interesting. Thanks
> for educating me :)
it was a bit of a surprise to me too. You don't need an LVS to test this.
You can see it with netpipe between 2 nodes on a quiet line. You can't
get 100Mbps till the packet size reaches the mtu, sending packets
as fast as the CPU can send them.
> The 100MBit ethernet MTU is fixed at 1500, but what if the back-end
> servers MTU is higher on layer three?
well I guess the ACK for the new MTU would take longer too :-)
Or if there is little or no ACK
> traffic -- say you're using UDP, for example?
now that's an idea, save acks till a timeout or max_packets=10
and then send them in 1 packet. Do delayed ACKs come close to doing this?
Joe
--
Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center,
mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA
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