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riobard

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The Disappointing Truth About Wi-Fi 7

rtings.com
2 points·by riobard·6 tháng trước·0 comments

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riobard
·17 ngày trước·discuss
There's a asymmetry here that "-R" works both for reverse static and dynamic (using SOCKS protocol) forwarding, but "-D" is required for dynamic forwarding which "-L" cannot do.

Why is that?
riobard
·24 ngày trước·discuss
Are you sure? I thought it's just AES without any authentication.
riobard
·3 tháng trước·discuss
That's exactly the issue. I'm just pointing out that it's a fantasy to hope for simple numbering of max supported speeds will simplify the current USB mess.

It will not.

Consumers would expect plugging a 20Gbps device into a 40Gbps port should result in 20Gbps negotiated speed. In reality it will mostly likely end up at 10Gbps (or less) because of the mess.
riobard
·3 tháng trước·discuss
> mark the speed on the USB ports, removing ambiguities

Unfortunately it's not true.

Quiz: what happens when a device capable of 20Gbps is plugged into a port marked as 40Gbps?
riobard
·3 tháng trước·discuss
> by the time batteries wear out, most people are going to want a new a phone.

Not true. In recent years smartphones do not advance much, and would be perfectly fine to keep working if not for the dying battery.

> At the very least we'd need to see some data that shows that most people replace batteries when it is possible to do so.

The degree of "possible" varies greatly depending on the available expertise and spare parts. Right now in EU it's cost prohibitive for both coz the special labor required is expensive and almost no official spare parts for consumers. So of coz this will be no data to support your claim.
riobard
·3 tháng trước·discuss
How do you achieve that on macOS then? With PF?
riobard
·3 tháng trước·discuss
why is jack retasking a thing…
riobard
·3 tháng trước·discuss
>> The macOS version uses deep packet inspection to do this more reliably. That's not an option here.

I thought it would be easier to do DPI on Linux than macOS. No???
riobard
·4 tháng trước·discuss
It just proved the author knows nothing about either technology.
riobard
·4 tháng trước·discuss
Seamless WiFi roaming is mostly a client decision. The best you can do on AP is to:

a) optimize signal strength for coverage (stronger signals aren't always better in multi-AP deployment);

b) provide hints via 802.11k/v/r to help clients make, hopefully, better decisions;

c) forcefully drop and disassociate clients when signal is weak enough.

But if the client has bad WiFi implementation, there's nothing much you could do.

OpenWRT currently supports 802.11k/v/r, but optimizing coverage by adjusting signal strength and channels is left for experienced users to deal with manually. There is the are where some commercial offerings will do, but the result greatly varies. AFAIK there's no ideal system anyway coz physics is hard.
riobard
·5 tháng trước·discuss
I used to think that the scenes of the TV series “Person of Interest” were exaggerated for storytelling purposes. Maybe not and it was accurate prescience.
riobard
·7 tháng trước·discuss
China has several teams working on FEL and several experimenting light sources, the latest being built in Shenzhen https://www.iasf.ac.cn/
riobard
·7 tháng trước·discuss
"(sftp) packetizes the data and waits for responses, effectively re-implementing the TCP window inside a TCP stream."

why is it designed this way? what problems it's supposed to solve?
riobard
·8 tháng trước·discuss
I hate the original Mac Pro case so much!!! The metal box is so heavy and the edges of the aluminum top handle is so sharp that you definitely need a pair of heavy-duty gloves to move it around.
riobard
·8 tháng trước·discuss
OK, can we have 7GHz and 8GHz for Wi-Fi please?
riobard
·8 tháng trước·discuss
China has already reserved the entire 6GHz for cellular and vehicles.
riobard
·8 tháng trước·discuss
> What do these devices do that can't be accomplished by an OpenWrt One + an external AP for less money and fully FOSS?

Nice UI (as the company is best known for https://ui.com)
riobard
·9 tháng trước·discuss
The assumed mentality of “being flexible” is the very reason WireGuard was created to fight against in the first place, otherwise why bother? IPSec is already standardized and with wide-spread hardware implementation (both FPGA and ASIC) and flexible.
riobard
·9 tháng trước·discuss
Those pesky WD bridges usually support USB Bulk Storage only but not UASP, resulting in worse performance and higher CPU usage.

Also HDD power management is often complicated by the bridge chip sometimes intervening.

Not recommended for long-term use.
riobard
·9 tháng trước·discuss
Yeah but those are pretty dated. I was under the impression those old Ampere servers are not efficient compared to modern EPYC anymore. So I’m wondering what their current generation of arm64 servers look like :p