SmartQoS defect causes slow speeds!!

[matchan]

I have a N66U with the Merlin f/w (376.44). Rock solid so far -- Thanks @RMerlin.

Here is an issue I verified exists..

Time Warner recently upgraded all connections . I got bumped from 50/5 to 300/20!
No matter what I did my Wired LAN never went over 100/8. Tested by connecting directly to router and the Arris Modem. No luck

TWC advised me to switch modems and I got a brand new modem today and voila , I got 330/22 when I connected directly to the modem.
Going through the router - no such luck. No matter what I did, the speeds did not exceed 102/20.
Finally, out of curiosity , I switched off Smart Qos , speeds immediately jumped to 300/20.
Enabling QoS again slowed me down to 100.
This is a defect nevertheless. Is the QoS hardcoded to no exceed 100 Mbps ? Can someone educate me if its otherwise.


All tests done on a Gigabit LAN


Thanks everyone

 

[L&LD]

This is not simply a defect of QoS, but the results of disabling HW acceleration (which is what happens when you enable certain things in the router, one being QoS).

In other words, it is expected.

To have QoS enabled and have high throughput still, you'll need a much more current and powerful router.

 

[matchan]

Ah, I am very surprised that what I am experiencing is a H/W limitation. I figured the N66 was recent enough to support QoS at high broadband speeds. I am not seeing the data in the CPU monitor. If I look at the CPU performance in the router, its about 40-70% while doing a speed test with or without QoS. I have now disabled Guest network,VPN and 5 Ghz, but speeds are stalled at 100 Mbps w/ QoS. How can I confirm h/w acceleration is off ?

 

[RMerlin]

Ah, I am very surprised that what I am experiencing is a H/W limitation. I figured the N66 was recent enough to support QoS at high broadband speeds. I am not seeing the data in the CPU monitor. If I look at the CPU performance in the router, its about 40-70% while doing a speed test with or without QoS. I have now disabled Guest network,VPN and 5 Ghz, but speeds are stalled at 100 Mbps w/ QoS. How can I confirm h/w acceleration is off ?

Look at the Tools -> Sysinfo page. It will tell you which feature is forcing HW acceleration to be disabled. In your case, QoS.

With such a fast WAN speed, you probably won't need QoS anyway, unless you were doing a LOT of P2P with a high number of connections.

 

[matchan]

Thanks so much folks for your super useful info. I LOVEEEE this opensource firmware! Maybe I ought to upgrade to the AC68U by thanksgiving , if RMerlin recommends it.

 

[TonyH]

Hi,
I never bother with QOS. If you want to use it spend some time setting it up.
May take hours and hours to get what you want.

 

[RMerlin]

Hi,
I never bother with QOS. If you want to use it spend some time setting it up.
May take hours and hours to get what you want.

This is what I like about the new Adaptive QoS. You only need to order the traffic categories to match what you want (for instance you could increase VoIP/IM traffic to get a higher priority than online gaming), and the DPI engine does the rest automatically.

 

[fantom]

This is what I like about the new Adaptive QoS. You only need to order the traffic categories to match what you want (for instance you could increase VoIP/IM traffic to get a higher priority than online gaming), and the DPI engine does the rest automatically.

Is "Adaptive QoS" available for RT-N66U?

 

[RMerlin]

Is "Adaptive QoS" available for RT-N66U?

No, and it will most likely never be, as the RT-N66U CPU isn't powerful enough.

 

[TonyH]

Old Big foot Killer NICs and WiFi cards from Qualcomm have some thing like that built in. One of my MSI gamer's laptop has them and seems to make difference compared to Intel ones. This laptop has e2200 NIC and N1202
WiFi card.

 

[nixon]

To have QoS enabled and have high throughput still, you'll need a much more current and powerful router.

What routers would be capable of this?

This is what I like about the new Adaptive QoS. You only need to order the traffic categories to match what you want (for instance you could increase VoIP/IM traffic to get a higher priority than online gaming), and the DPI engine does the rest automatically.

So could you set the Adaptive QoS so that online gaming was always the highest priority?

 

[RMerlin]

So could you set the Adaptive QoS so that online gaming was always the highest priority?

I didn't specifically test with gaming, but just go ahead and drag the category higher if you want.

 

[L&LD]

What routers would be capable of this?

Asus RT-AC56U, RT-AC68U and RT-AC87U.