117 MB/s wireless AC limitation

[pete y testing]

hi guys

in resent testing with an asus rt-ac88u running as the router and an asus rt-ac5300 running as the client in media bridge mode i hit the average throughput of 117MB/s read and 110Mb/s write speed over windows 10 copy and paste over wifi

comp have solid state drive and 415+ has solid state drives and ethernet to ethernet through the 88u is 117 MB/s read and 117 MB/s write

so have we come to the limitations of the ethernet backbone with these results and if so will all 4 x 4 routers from now on be limited to the backbone and is it the case we will need to move to 10G ethernet to allow further speed increases over wifi

tim tests also showed ichariot getting very close to the 936Mbps ethernet limitation

or would it be a different approach to over comp this limitation per client ( not talking multiple clients here )

pete

 

[L&LD]

No, a different approach is not required. I stated this very fact (that we need 10GbE capable routers) at least a year or more ago.

 

[System Error Message]

both those routers will let you bond 2 ethernet ports so that could help in testing in finding limits

 

[pete y testing]

both those routers will let you bond 2 ethernet ports so that could help in testing in finding limits

already did and the limit is still 117MB/s to a single client , the bonding will only give 117MB/s to 2 clients without effecting each other ( well it wont get that fast but you know what i mean ) i think the link from the ethernet to the wifi is limited to 1 gig no matter what

 

[System Error Message]

already did and the limit is still 117MB/s to a single client , the bonding will only give 117MB/s to 2 clients without effecting each other ( well it wont get that fast but you know what i mean ) i think the link from the ethernet to the wifi is limited to 1 gig no matter what

I mean do it for the client as well. So the client will need 2 ethernet ports.

Perhaps having 4 clients in total to test from one end to another would be better and than add up the bandwidth from both running at the same time. This should answer the question if broadcom uses a switch with 1Gb/s connection to CPU which i have been ranting about when it comes to performance above a single gigabit WAN.

 

[somms]

hi guys

in resent testing with an asus rt-ac88u running as the router and an asus rt-ac5300 running as the client in media bridge mode i hit the average throughput of 117MB/s read and 110Mb/s write speed over windows 10 copy and paste over wifi

comp have solid state drive and 415+ has solid state drives and ethernet to ethernet through the 88u is 117 MB/s read and 117 MB/s write

Gateway R7000 flashed w/Shibby's tomato wired throughput...

Gateway R7000 flashed w/Shibby's tomato 5GHz band wireless throughput...

Range extender R7000 flashed w/DD-WRT connected as client over 5GHz band throughput...

I'm getting more throughput using a pair of 802.11N (R7000s) than you are achieving using 802.11AC!?

There has to be an issue with your 802.11AC setup I'm sure...

 

[pete y testing]

Gateway R7000 flashed w/Shibby's tomato wired throughput...

Gateway R7000 flashed w/Shibby's tomato 5GHz band wireless throughput...

Range extender R7000 flashed w/DD-WRT connected as client over 5GHz band throughput...

I'm getting more throughput using a pair of 802.11N (R7000s) than you are achieving using 802.11AC!?

There has to be an issue with your 802.11AC setup I'm sure...

important little letter you mis read there

your reporting Mbps

we are talking about MB/s throughput

117 MB/s is approx = to 936Mbps

so your tests are no where near this and wont be because your plan is too slow

 

[somms]

My bad!

Close to 1Gbps over wireless is crazy fast and something I'll never be able to achieve over old school 802.11N!

 

[pete y testing]

'll never be able to achieve over old school 802.11N!

it be why you should upgrade

 

[thiggins]

2.5 or 5 Gbps Ethernet is the more likely next step.

http://www.networkworld.com/article/2840287/cisco-subnet/cisco-others-pushing-2-5g-5g-ethernet.html

 

[pete y testing]

2.5 or 5 Gbps Ethernet is the more likely next step.

hmm so we may see it in the domestic world in 5 years time

till then we will be at max coverage , max throughput and no increase in performance 5 gig wise , wifi is going to be boring until we see some improvement in the backbone

 

[RMerlin]

hmm so we may see it in the domestic world in 5 years time

till then we will be at max coverage , max throughput and no increase in performance 5 gig wise , wifi is going to be boring until we see some improvement in the backbone

Don't forget that wireless is a shared media. Having a higher wireless throughput at the AP is still important when dealing with multiple simultaneous clients.

Broadcom's prediction regarding 2.5G Ethernet (from a November 2015 press release):

"There's a strong 2.5G Ethernet ramp expected in the coming 5 years," said Alan Weckel, VP Ethernet Switch Analyst at Dell Oro. "We expect 5 million 2.5G ports to be deployed next year and up to 25 million by 2019, driven by the transition to 802.11ac Wave 2 Wi-Fi."

source: http://www.prnewswire.com/news-rele...t-ethernet-into-the-enterprise-300180756.html

 

[pete y testing]

Don't forget that wireless is a shared media. Having a higher wireless throughput at the AP is still important when dealing with multiple simultaneous clients.

certainly agree with this , however its still the case that the wifi backbone has pretty much reached its limits and until we see the improved ethernet speeds wireless progress will; be limited to tweaking around the edges with no real performance gains overall until such time as the bottleneck is removed

 

[Nullity]

certainly agree with this , however its still the case that the wifi backbone has pretty much reached its limits and until we see the improved ethernet speeds wireless progress will; be limited to tweaking around the edges with no real performance gains overall until such time as the bottleneck is removed

I think it depends what you mean by "wifi backbone", but some (most?) modern SoC implementations use PCIe (which is 250MByte/s minimum) to connect to the WiFi module.

 

[sfx2000]

Some SoC's have already done 2.5Gb ethernet within their switch fabric...

Some even more...

 

[pete y testing]

Some SoC's have already done 2.5Gb ethernet within their switch fabric...

Some even more...

but are any of them in the domestic market or looking like they are coming to the domestic market ?

 

[Nullity]

but are any of them in the domestic market or looking like they are coming to the domestic market ?

@System Error Message & @RMerlin had a conversation a few months ago about the RT-AC??? having PCIe interconnection except for 1 port.

Sorry, too lazy to search ATM, but the conversation was more about the particular Broadcom/Qualcomm SoC if you are interested in searching.

 

[sfx2000]

but are any of them in the domestic market or looking like they are coming to the domestic market ?

Already here... none of the interfaces are outward facing, but it's there - might be using it already

 

[pete y testing]

Already here... none of the interfaces are outward facing, but it's there - might be using it already

well its clear the 88u isnt employing it atm nor any other router i have tested last weekend including 86u , 87u , ac3200 , ac5300 , 88u , netgear r7000 , tp link archer C9 etc as all have the 177MB/s limit

 

[Nullity]

well its clear the 88u isnt employing it atm nor any other router i have tested last weekend including 86u , 87u , ac3200 , ac5300 , 88u , netgear r7000 , tp link archer C9 etc as all have the 177MB/s limit

I assume your link-rate was ~1700Mbit...

177MByte is 1416Mbit (not including overhead) which seems to correspond with a ~1700Mbit link-rate.

Where is the problem?