On Thu, Aug 8, 2013 at 4:54 PM, Brian E Carpenter < [email protected]> wrote:
> On 09/08/2013 01:21, Olafur Gudmundsson wrote: > > > Moral: do not constrain homenet requirements by yesterdays devices. > > Fair enough (after all, the IPv6 design is great for an end-of-era > minicomputer). > > However, today's devices are overwhelmingly battery-powered, so even > if compute power and memory are not the issues, electricity matters. > Your home router is not battery powered (except for if you run it off a battery back up system). The one I've measured consumes of order 5W, IIRC (WNRD3700v2). As noted, this is a 600Mhz SOC MIPS architecture (Atheros). This is now about 2 years old: more recent routers are yet higher performance. Relative to what you are used to on a desktop, the biggest performance differences are caused by having a small cache (making many interpreted languages relatively slow). Even so, it's much faster than most desktops/servers were not all that long ago, for integer codes. I believe the power consumption is often dominated by the 1G ethernet ports; a 1ghz SOC is only around 1W power consumption. Each ethernet port can consume significant power. If you use a USB port, it can also consume power (up to 2W). The WiFi may account for a watt or so of the consumption (it turns out that transmit and receive typically consume comparable amounts of power; the transmit power isn't significant relative to the power consumed by the signal processing that is done on receive). The WiFi devices in handheld devices may be somewhat more efficient (but also poorer performance: it pays to have a good radio in the router, where power is easy to come by.). - Jim > Brian > _______________________________________________ > homenet mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/homenet >
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