repiret

8 ms·

1.
by repiret 10d ago
No, the problem really is the prefetch itself when there are undesirable side-effects if the bus sees that memory read.
2.
by repiret 10d ago
Speculative instruction fetches fetch code from "a location that you never asked it to execute code at" by design. If it already knew you asked it to execute code there, it wouldn't be speculative. The Armv8/9-A archite
3.
by repiret 10d ago
"Speculative instruction fetch to device memory crashes device" is in my list of favorite bugs ever found. I had ran into it on a Cortex-M4 without an MPU, so I couldn't even fix the memory attributes, the only solution was
4.
by repiret 1mo ago
I configure Mutt to run the HTML part through w3m and show me that instead of the text part, because of this exact misuse of multipart/alternative.
5.
by repiret 2mo ago
Most transport category aircraft have a better glide ratio than most single engine GA planes when configured for best glide. But they don’t cruise descend at best glide speeds or at idle thrust. I’m talking about turbo props because the ar
6.
by repiret 2mo ago
A car going down a slight hill on the freeway still needs a bit of gas to maintain speed. My assertion is that there are no turboprop plans that can maintain a 3° glideslope at normal approach speed without thrust from the engines. If you
7.
by repiret 2mo ago
Not really much room. Unlike a car going down a hill, an airplane descending still wants thrust from the engines, just not as much as in cruise.
8.
by repiret 2mo ago
Don’t conflate airplanes with rockets. On an airplane, most of the energy in cruise is spent overcoming parasitic drag, not induced drag. It’s spent pushing the airmass out of the way as it moves forward, not creating lift to stay aloft. Fo
9.
by repiret 2mo ago
strlen for netstring is O(log n).
10.
by repiret 2mo ago
It's mathematically impossible to describe an arbitrary length in a fixed length.
11.
by repiret 2mo ago
Because then the caller needs to treat it differently from non-empty buffers.
12.
by repiret 3mo ago
I live in the United States. I write software for a living. My wife is a physician. If I had a need to spend $2k, I could do so easily, but I still think it’s a lot of money to burn. I wouldn’t spend it on a whim; I would not spend it witho
13.
by repiret 4mo ago
This feels like too far the other direction. I am of the opinion that the following are all reasonable, and I think most people would agree with me: * Toll enforcement (the only thing allowed by the law) * Speeding enforcement * Parking en
14.
by repiret 4mo ago
I don't care too much about hot-rodders either. California specifically requires the original emissions equipment remain intact. Here's two cases where that fails: 1. Close to 20 years ago I read about someone who converted a ca
15.
by repiret 4mo ago
Periodic vehicle inspection for emissions and safety compliance. Many jurisdictions already have this for gas engine emissions, a handful of states already have safety inspections. Done right, it can be low burden and low cost, and basica
16.
by repiret 4mo ago
My experience is that there's a correlation between powerful type systems and the property that once your program compiles, it's correct. Compiles == correct is rarely true in C or JavaScript. It's often true in Haskell and
17.
by repiret 6mo ago
Assuming you mean in the United Stares, can you cite a specific law or court case to support your position? It occurs to me that the existence of paparazzi seems to be evidence against your position.
18.
by repiret 6mo ago
Or just `strace`.
19.
by repiret 6mo ago
This isn't the first time this month I've read about someone suffering consequences of mistaken identity after their facial recognition said they look like someone who committed a crime. I'm sure this is starting to happen a
20.
by repiret 7mo ago
If, like me, you were wondering how a 52 year old could have been a developer on a game you remember playing on an NES in the late 80s or early 90s: It looks like Īda's Castlevania involvement started around 2003, working in increasing
21.
by repiret 7mo ago
My insurance agent has recommended that once a year or so I carefully walk through the house with a video recorder, opening every cabinet and drawer and tool box and so on. It's easier than constructing a detailed inventory, but gives
22.
by repiret 7mo ago
This is what I do too, but be warned about “fire proof” - a fire that results in the total loss of your house will create enough heat for enough time that fireproof gun safes and smaller fireproof lockboxes will be destroyed, or even if not
23.
by repiret 8mo ago
As someone who recently replaced a few windows in my house, I can say in no uncertain terms that spending $1200 for a lamp and paying to feed it 0.58kW is cheaper than hiring a contractor to add another window. And it works all day.
24.
by repiret 8mo ago
This is really useful for those of us who are really only familiar with the US system. Let me restate a few things to make sure I understand, and follow with some questions: 1. The "procureur" and "juge d'instruction&qu
25.
by repiret 8mo ago
I'm reminded of the monologue from Terminator 2: > Watching John with the machine, it was suddenly so clear. The Terminator would never stop, it would never leave him... it would always be there. And it would never hurt him, never s
26.
by repiret 8mo ago
100ns intervals. My favorite part of that story is how long after Windows 95 was released before anybody discovered the bug.
27.
by repiret 8mo ago
> CPUs fetch data from memory in fixed-size blocks of so-many bytes, and performance degrades when data is misaligned. A memory bus supports memory transactions of various sizes, with the largest size supported being a function of how ma
28.
by repiret 8mo ago
You can use too few bits of color depth to get lossyness in PNG. More generally, I can't find myself very sympathetic to "I don't want a format that can do X and Y, because I might accidentally select X when I want Y in my s
29.
by repiret 9mo ago
I use MoneyDance, which does automatic bank sync, is double-entry (although you can make single-entry transactions if you try hard enough), and is a program rather than a web service. It’s got some rough edges, but it meets my needs well e
30.
by repiret 10mo ago
Allegations of copyright infringement where the person making the allegation hasn't done due diligence need to be illegal and subject to civil penalty. The penalties for actual copyright infringement can be so severe that we cannot al

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