[Discuss] Future-proofing a house for networking -- what to run?

[dsr at randomstring.org (Dan Ritter)]

On Wed, Sep 13, 2017 at 02:36:51PM -0400, Richard Pieri wrote:
> On 9/13/2017 11:44 AM, Robert Krawitz wrote:
> > On Wed, 13 Sep 2017 11:38:36 -0400, Richard Pieri wrote:
> >> 1080p video streams (MPEG-4) need about 5-8 Mbps burst bandwidth.
> >> Gigabit Ethernet has practical throughput about 300Mbps.
> > 
> > ???  I routinely get over 100 MB/sec (>800 Mbps) transferring files --
> > even with scp -- between systems with fast enough disks.
> 
> So, yeah, whole-home wiring just doesn't make sense.

You go tend to your knitting.

I have a family of four, plus occasional guests. If I had every
device that could be connected to ethernet connected to wifi, 
I would spend all my time debugging wifi problems.

On a Saturday afternoon, it is not unusual to see:

- one person watching NetFlix.

- one person watching MythTV.

- one person playing a video game while listening to music from
  YouTube.

- one person trying to get work done

- a bunch of wifi devices chirping away at the internet, and

- a couple of backups in progress.

and as for jumbo packets:

$  netperf -H splat -p 20000 -l 30
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET
to splat () port 0 AF_INET : demo
Recv   Send    Send                          
Socket Socket  Message  Elapsed              
Size   Size    Size     Time     Throughput  
bytes  bytes   bytes    secs.    10^6bits/sec  

 87380  16384  16384    30.01     940.42

$ ip l
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
fq_codel state UP mode DEFAULT group default qlen 1000


So, no, you don't need jumbo packets to get 900+Mb/s
out of your 1000Mb/s ethernet connection. That's through
a very boring Netgear $50 switch.

-dsr-