What about SQM Qos settings?

ysjhxh

As shown in the picture, I am a TP7650+N1 bypass. Set SQM QOS download is a bandwidth 12Mx8x1000x0.9 configuration, upload is 4M, but upload cannot be set to 4x8x1000x0.9, because as soon as it is set, the speed measurement becomes 3M per second, please tell me....................................

ysjhxh

Ask.........................................................

HCH0086

12M？ Is it mbyte or mbit

harry586

Refer to it and try to switch positions
Upload and download is based on the router 1. In LAN, for the router his download = upload (your)


2. In WAN, for the router his download = download

goget

https://www.right.com.cn/forum/thread-213565-1-1.html
https://oldwiki.archive.openwrt.org/doc/howto/sqm
Please refer to these two instructions and try it

ysjhxh

HCH0086 Posted on 2020-6-26 07:48
12M？ Is it mbyte or mbit

The speed test download is 12MB/S
The conversion should be 12x8x1000 mbit/s
Am I right?

ysjhxh

harry586 Posted on 2020-6-26 08:27
Refer to it and try to switch positions
Upload and download is based on the router 1. In LAN, for the router his download = upload ( ...

Seems to understand, my bypass is connected to the main route of the LAN port. Then I should set the upload = download speed limit of 90000
After I set it like this, is it normal for the speed to change from 12M/s to 10.5M/s at full speed???

There is also a question, that is, if I limit the download (that is, upload) speed, the download speed of the speed test will also decrease year-on-year......

ysjhxh

goget Posted on 2020-6-26 08:34
https://www.right.com.cn/forum/thread-213565-1-1.html
https://oldwiki.archive.openwrt.org/doc/howto ...

Thank! I'll think about it!

harry586

ysjhxh Posted on 2020-6-26 15:29
Seems to understand, my bypass is connected to the main route of the LAN port. Then I should set the upload = download speed limit of 90000
After I set it like this, the speed test goes from full speed to 1 ...

reference
1. Multi-test, the network speed is unstable, not necessarily every time, and needs to be tested several times
2. Download speed (kbit/s) and upload speed (kbit/s) Go to Speedtest.net speed test, here the test speed = xx megabandwidth, for example, 100 megabytes; Your speed test download of 12MB/S should be the actual download speed
3. Personal understanding
Router QoS calculation:
1. Calculate by integer, for example, 100mb=100*1000
2. Calculated at 91%, that is, the result is 100*1000*0.91

ysjhxh

harry586 on 2020-6-27 10:01
reference
1. Multi-test, the network speed is unstable, not necessarily every time, and needs to be tested several times
2. Download speed (kbit/s) and upload speed ...

Understood, my home is 100M megafiber, so I don't need to test, I only need to set 100x1000x91% That's what it means

zyyhcufe

ysjhxh Posted on 2020-6-28 13:31
Understood, my home is 100M megafiber, so I don't need to test, I only need to set 100x1000x91% That's what it means

There is no need to multiply by 91%, just convert it directly, or even slightly higher, the principle is not to trigger the operator's speed limit.

ysjhxh

zyyhcufe posted on 2020-6-28 14:10
There is no need to multiply by 91%, just convert it directly, or even slightly higher, the principle is not to trigger the operator's speed limit.

I run 12M at full speed of broadband 5G, I use 12x8x1000=96000, after I set 90000, the speed is 10.5M per second, you mean, continue to accumulate, fill in a number that can run exactly 12M, right? ? Because I heard before that SQM is rate-limited, and the reserved speed is used for full-speed downloads, while others buffer it. Isn't that so? Don't you need to reserve?

zyyhcufe

ysjhxh Posted on 2020-6-29 16:27
I run 12M at full speed of broadband 5G, I use 12x8x1000=96000, after I set 90000, the speed is measured at 10.5M per second, you mean, continue to accumulate, fill in a ...

The buffering you are talking about is exactly the problem that SOM is trying to solve, the so-called bufferbloat.
Assuming that the carrier allocates 100M bandwidth to you, when you start downloading from a website, the speed is likely to soar to 150M until the buffer is exhausted, and then your traffic will be lost like crazy, so your latency will skyrocket until the buffer is emptied and the next cycle begins.
The logic of SQM is to actively lose packets when it detects that the delay starts to rise, and the sender will reduce the transmission rate accordingly when it detects packet loss, so as to ensure that the buffer does not overflow and the latency remains stable.
You can simply look at the rate curve in the task manager, if SQM is active, the rate curve will be a smooth straight line, and vice versa.

ysjhxh

zyyhcufe posted on 2020-6-29 17:10
The buffering you are talking about is exactly the problem that SOM is trying to solve, the so-called bufferbloat.
Suppose the operator allocates 100M bandwidth to you, when you start to download from a certain network...

So that's it, thank you so much! I have always thought that SQM is to reserve a speed limit, and then use this part of the speed limit for others to use, it turns out to be judged by detecting delays, which is too scientific. Thank! Understand it at once! Thank you so much!!