nousermane

17 ms·

91.
by nousermane 4y ago
Analog multiplexer employed as an RF mixer is pure genius. Of course you can only drive it with square-wave, and mixing with square-wave, intuitively, feels like a terrible idea (think of all the harmonics!). But surprisingly, listening to
92.
by nousermane 4y ago
Yep. And paranoid folk, like myself, may consider adding a set of iptables rules to deny-list IPs originating this sort of junk traffic, wholesale: ipset create n hash:net -A INPUT -m set --match-set n src -j DROP -A INPUT -p tcp -
93.
by nousermane 4y ago
Each job requires a tool that does it best, within some limits. To set a bit in GPIO: - on AVR, one assembly instruction, 2 bytes machine code, 1 CPU cycle (unless interrupts are enabled); - on microcontroller-style ARM (Pi-pico), 2-4 assem
94.
by nousermane 4y ago
AVR might be not optimal in mathematical sense, but it feels so nice: - Tons of registers, up to a point where there are attiny parts with no RAM, and they are fairly usable; - Great code density for embedded - single-instruction atomic GPI
95.
by nousermane 4y ago
> easily handle millions of requests per day Yes. People don't realize how little that is. Million requests per day is 12 requests per second, on average. Even if we factor in peak load at 20x that, it is still well within reach of
96.
by nousermane 4y ago
Wouldn't cost of burying that cable be like 50x of that anyway?
97.
by nousermane 4y ago
Not sure what you meant by "full repairability", but for component-level system board repair, framework laptop is not far at all from current-gen lenovo or macbook. That's the whole point of OP's video. User-replaceable
98.
by nousermane 4y ago
External connectors are pretty much the only kind of component that is still routinely being used in (full or partial) through-hole form-factor. Laptop in question does use partial through-hole connectors for all 4 USB-C ports - notice 6 sh
99.
by nousermane 4y ago
Does that "large inequality" apply to symbolics in french literature as well? Or the same "≤" (U+2264) is used as in english?
100.
by nousermane 4y ago
I wish "innovative, actually interesting parts" would include delivering an actually repair-friendly laptop - that is - one with full schematics; only ICs that are normally in-stock on digi-key/mouser; no soldered-down compon
101.
by nousermane 4y ago
They were way ahead of their time. Bear with me for this explanation. To quote [1], > f-number of an optical system such as a camera lens is the ratio of the system's focal length to the diameter of the entrance pupil ("clear a
102.
by nousermane 4y ago
> you know for a fact that small lightweight software is not what you are building Maybe this is the point to stop and ask yourself, if you're doing it right? There is no industry standard for complexity. It's the "dd&quot
103.
by nousermane 4y ago
If only they paid equal attention to shutdown as well. It is relatively easy to inadvertently break a systemd install in such a way that reboot/shutdown would go through a number of grotesque "tasks" with very generous time
104.
by nousermane 4y ago
"For a modern personal computer", systemd is pretty much spot-on what you'd want. On the other hand, if you're running a bunch of fast-scaling containers/VMs, and just want init to (re)spawn one (or a handful) of pr
105.
by nousermane 4y ago
Exactly. Most "enterprise" software competes with a team of 3 doing it all in excel. At this rate, $100k/yr is a bargain.
106.
by nousermane 4y ago
...absent functioning antitrust legislation, yes.
107.
by nousermane 4y ago
Games, audio/video calls, screen sharing - any peer-to-peer traffic is a royal pain in the back with NAT and CGNAT especially. Larger providers (zoom, apple/facetime, twitch, ...) just set up relay servers and avoid p2p altogether
108.
by nousermane 4y ago
Well, you can also ask general public whether they prefer SAE or metric fasteners, or mix thereof, in their car, and get the same blank stare in return. But ask auto-mechanics, and hoo boy, will there be opinions.
109.
by nousermane 4y ago
It's not that somebody is holding your ISP, it's that your ISP doesn't see IPv6 as something that they should bother doing (very low demand from customers). And if that ISP happens to be one of those that decided that their c
110.
by nousermane 4y ago
> shouldn't take more time to boot than a general-purpose consumer PC/laptop. That's an incredibly easy target. VMs can and should boot much faster than that - just look at firecracker hypervisor. Even with KVM, if you rep
111.
by nousermane 4y ago
Please forgive the nit-picking, I'm not attacking this (excellent) article, or your entirely sensible inclination to dig up some "physical" number, but... With modern SSDs, "sector/block size" is rapidly approa
112.
by nousermane 4y ago
Hey, at least caddy does case-insensetive hostname match, so you don't need to repeat the domain 2^12 times </s> Seriously though - that's a pretty bizarre bug, absent from both nginx and apache httpd. And that attitude
113.
by nousermane 4y ago
> copying zeroes is much less work Yes, reading "evicted" or "trimmed" space [0] specifically, is much less work - only flags are read, not actual media. [0] https://en.wikipedia.org/wiki/Trim_(co
114.
by nousermane 4y ago
(In theory at least,) kernel should take care of aggregating write blocks and those will be plenty big enough by the time it reaches target drive, all thanks to the very same page cache GP is talking about - unless you specify "oflag=d
115.
by nousermane 4y ago
3 years of uptime might sound impressive, but this means you keep running the same kernel, and towards the end of that streak, that kernel is pretty much guaranteed to have a widely-known local privilege escalation vulnerability.
116.
by nousermane 4y ago
MicroPython's authors call it a "subset of python3", and that is a fairly large subset - all the familiar data structures, co-routines, module import, filesystem I/O, FFI, ...; Interpreter is much smaller than CPython an
117.
by nousermane 4y ago
Talking about notch/hole-punch displays. As somebody who never ever uses front-facing camera, can I have a phone/display without such defects, please?
118.
by nousermane 4y ago
IBM PC keyboard from 1981 (and all later external PC & Mac keyboards) have an independent microcontroller. https://en.wikipedia.org/wiki/Intel_MCS-48#Uses
119.
by nousermane 4y ago
Whole experiment is plain absurd. From https://en.wikipedia.org/wiki/Lunar_soil#Mineralogy_and_comp... > There are two profound differences in the chemistry of lunar regolith and dirt from terrestrial materials. The
120.
by nousermane 4y ago
No, not even if you disregard time altogether. Compression of Calgary Corpus on a random old laptop: sec KB gzip 0.19 1070 zstd 0.02 1063 zstd -19 1.47 897 bzip2 0.35 891 brotli 8.12 862

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