bewo001

6 ms·

1.
by bewo001 5mo ago
An interface can have many ipv4 addresses as well. It's just not that common, so many people believe they'd need vlans to achieve that.
2.
by bewo001 6mo ago
well.. openflow is pretty much dead, too inflexible, too slow. The whole control/user plane split is an attempt of the classical router vendors to keep their proprietary boxes. It adds complexity as it requires to synchronize the state
3.
by bewo001 9mo ago
Hm, some things compilers do during optimization would have been labelled AI during the last AI bubble.
4.
by bewo001 10mo ago
It's much simpler. In the EU, truckers have to do mandatory 45 min breaks after 4 1/2 hours of driving. With the latest truck generation, this is enough time to recharge to get through the rest of the shift. 400 kW charging is suf
5.
by bewo001 10mo ago
IQ tests are a bit absurd if one looks at the changing definitions of intelligence over the past century. Someone in the 1920s/30s would call the ability to solve equations or play chess well as signs of high intelligence. Not so long
6.
by bewo001 11mo ago
I did once fly as a guest with a winch start, and yes it is something. The ascend is pretty steep and the acceleration is powerful. The pilot did not find good lift and we had to land shortly after. My stomach did not like his curving aroun
7.
by bewo001 1y ago
My late father was a maintenance technician for those things. He hated it when programmers did smart instruction placement to optimize drum timing. When the drum speed was a little off, they called him to calibrate it so their programs woul
8.
by bewo001 1y ago
forth would come to mind, some people have build surprising stuff with it though I find it too low-level.
9.
by bewo001 2y ago
yes, IBM's CUA wasn't that bad. 'F1' for help is one remnant of this. ( https://en.wikipedia.org/wiki/IBM_Common_User_Access )
10.
by bewo001 2y ago
Actually, every browser supporting webrtc datachannel supports SCTP over UDP.
11.
by bewo001 2y ago
I don't understand the difference to TCP here. If the path is not congested but the receiving endpoint is, the receiver can control the bandwidth by reducing the window size. Ultimately, it is always the sender that has to react to con
12.
by bewo001 2y ago
AFAIK, an ebpf function can only access memory it got handed as an argument or as result from a very limited number of kernel functions. Your function will not load if you don't have boundary checks. Fighting the ebpf validator is a bi
13.
by bewo001 2y ago
"Schematics work really well for capturing information that's independent of time, .." This spells out what always irked me about graphical software.
14.
by bewo001 2y ago
The fun really starts if you have a CPU using big endian and a bus using little endian.. Back in the late 1990s, we moved from Motorola 68k / sbus to Power/PCI. To make the transition easy, we kept using big endian for the CPU. Ho
15.
by bewo001 2y ago
For high-speed networking, exokernel concepts are now being used in the form of DPDK (user space) and eBPF/XDP (user code dynamically verified and loaded into kernel space). Exokernels aimed to move kernel functionalities not into a bu
16.
by bewo001 3y ago
done ( https://github.com/Netflix/bpftop/issues/17 ). Seems to be some futex issue, the kind of bugs that tend to be hard to replicate.
17.
by bewo001 3y ago
I might have mis-interpreted this statement: "Certain types and traits that exist in the standard library are known to the Rust compiler." ( https://doc.rust-lang.org/reference/special-types-and-traits... &quot
18.
by bewo001 3y ago
I was thinking of things like Box, Rc, Arc, Cell, Refcell. Then there is also the macro language, which integrates Scheme concepts. Like C++, it is a huge language, with extra wrinkles for every new corner case. Again, maybe this all is una
19.
by bewo001 3y ago
Nice! But I got it to freeze under higher load. Removing the load does not help.
20.
by bewo001 3y ago
lifetimes, async, the myriads of pointer types, that poor-person's monad '?' for a single type.. Sure, you need to give the compiler a lot of hints to achieve what Rust is doing, but it does not look pretty or elegant.
21.
by bewo001 3y ago
From my VoIP experience, there is no 'typical' in NAT. There have been attempts to classify NATs ( https://www.rfc-editor.org/rfc/rfc3489 , Section 5), but they have been abandoned after seeing how NATs sometim
22.
by bewo001 3y ago
By this they mean expulsion of all people -including citizens- who don't "look German" and people who support them. If this is not fascist, I don't know what is.
23.
by bewo001 3y ago
E1 (2Mbit/s) lines were used to connect data centers in the early 1990's.. Man, to think what you could at home with such bandwidth. Maybe even video!
24.
by bewo001 3y ago
Actually, it was envisioned that you'd use the D channel for packet switched data traffic (not IP, more like X.25). Why would a private person use more than 16 kbit/s for a home computer? Much more important to have two high-quali
25.
by bewo001 3y ago
I worked at an ISDN adapter company in the late 1990s. Apparently, one customer a couple of years earlier did use ISDN as their LAN technology. Each PC with an adaptor (to the joy of my employer, this customer was not small), using the PBX
26.
by bewo001 3y ago
also https://www.sharedrop.io/ it uses webrtc for local communication
27.
by bewo001 3y ago
I understand that there were good reasons why it was done. But out-of-band control is so much nicer to work with. One channel for control, one for data. No parsing of text. No escaping of '+++' to avoid that a '+++ATH' i
28.
by bewo001 3y ago
This use of AT commands in 4g modems was really something that made me laugh out loud when I started dabbling with those devices. The muscle memory still worked. The lack of dialing and modem sound was a bit of let-down, though. It is astou
29.
by bewo001 3y ago
Got it, I'll use JCL for the next project. More seriously, this is a very good comparison. IBM always dreamed to be something like AWS is today.
30.
by bewo001 3y ago
I once worked in a project where the plan was to have 3 switches in a box, ethernet, ATM, and TDM. The 622 Mbps ATM switch chip was much more expensive than a 1 Gig-Ethernet chip. So ATM was dropped pretty quickly from the concept. ATM-base

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