jagrsw

13 ms·

121.
by jagrsw 3y ago
I tried to use it 1.5years ago when playing CSGO inside a VM. It worked, but the delay (between mouse movements and changes on the screen) was quickly raising to something like 0.5-1s. It required some host daemon to be cooperating with qem
122.
by jagrsw 3y ago
In the "old times" a video mode descriptor included things like "front porch", "sync width" and similar unpleasantries. I believe they're still used with DP/HDMI, as it's possible to play with &q
123.
by jagrsw 3y ago
In the spirit of times - does anybody know what room-temp supercoductors would do to the transmission lines, like DP/HDMI? Would 0 resistance have positive influence on signal degradation/coherence (ie. increasing maximum cable le
124.
by jagrsw 3y ago
I don't know much about superconductivity, but if 0.25A is the limit no matter the cross-section of conductor, you can multiply/parallelize the conductors - i.e. series of "microconductors", each carrying 0.25A, which wo
125.
by jagrsw 3y ago
Eg. by changing PT_INTERP to something else than usual (or dispensing with it, so the binary becomes a static one, still displaying DT_NEEDED), or exploiting bugs in ld.so, so the values shown by readelf become meaningless. I'm also no
126.
by jagrsw 3y ago
If you're worried (like really worried) about a binary, then it can easily fool readelf (btw, it can fool ldd too), so eg the data from the ELF header is never used. Probably running `strace` or `perf record -e intel_pt` in a confined
127.
by jagrsw 3y ago
This exercise appears to be somewhat flawed, even if entertaining/informative. Instead of evaluating the speed at which complex problems are resolved, it predominantly tests a peripheral issue: the efficiency of extracting memory from
128.
by jagrsw 3y ago
While I've only briefly examined the WebAssembly (WASM) security model, it seems like a recurrence of vx32 and NaCL. One inherent issue is the "glue" code enabling the WASM runtime to invoke necessary operating system (OS) pr
129.
by jagrsw 3y ago
It's somewhat concerning that Valve seems to disregard the importance of RCEs in server/client code, making them relatively easy to find. There appears to be a lack of proactivity in addressing these bugs. Given Valve's subst
130.
by jagrsw 3y ago
> I think the MMU was introduced with the 68020 Apparently it was possible to use MMU even with 68000. A few months back someone on HN was describing on how they implemented it, even if 68000 wasn't designed for it (?) - Fro
131.
by jagrsw 4y ago
Ah.. that makes sense. I was sort-a stuck in the WiFi/WPA mode, where there are no explicit salts (I guess ssid names can be considered as such).
132.
by jagrsw 4y ago
A naive question: Are KDFs meant to improve the security of systems or merely preserve it? I was under the impression that the purpose of KDFs is twofold: a) Preserve entropy of the password material (up to a limit - size of the input t
133.
by jagrsw 4y ago
The video is interesting, but I suspect, that the author is making some subtle errors at places. Tho I'm not 100% sure, last time I analyzed those subject was at BsC/MsC courses at my uni. E.g. he says something to the tune of
134.
by jagrsw 4y ago
An obligatory reminder, esp. for US-based folks, that when creating posts/comments when writing things like 'our country', 'the president', 'here', 'in the parliament', 'the law says',
135.
by jagrsw 4y ago
It's widely presumed within faang-type-of companies that anything an employee says or does can be interpreted as an official company statement, especially by the press. As a result, many of these companies offer, often mandatory, train
136.
by jagrsw 4y ago
Hmm.. the acceleration part. E=(mv^2)/2 - so we put more energy accelerating the bike from 10-20m/s than 0-10m/s, no? Yet a=F/m - which suggests the acceleration is proportional to force, which would suggest that applyin
137.
by jagrsw 4y ago
Most reasonable companies/projects do that. I believe the compiler explorer project - https://godbolt.org/ - uses nsjail or maybe firejail for that - https://github.com/compiler-explorer/compiler-e
138.
by jagrsw 4y ago
While some programs/libs (most notably libjpeg) use setjmp/longjmp, I tend to avoid them: * Does setjmp/longjmp save/restore all registers (eg simd) of modern CPU variations? Can incosistiences happen here? * As a
139.
by jagrsw 4y ago
Probably a bad sign? It's concerning to see young scientists' job prospects being manipulated based on personal relationships rather than merit. This form of tribalism goes against the principles of the academic system. If this be
140.
by jagrsw 4y ago
There are debates which are illuminating (esp. when you first time hear some ideas), you get new POVs and see excitement in the speaker's eyes, and even numbers/data might add up to a point, but the overall ideas might be harmful&
141.
by jagrsw 4y ago
5950X hit its highest clocks on cores 1 and 4. Both are located on the first CCD. My 3950X clocked highest on cores 4 and 5. Both are also on the first CCD. This is a curious pattern. Perhaps AMD is only binning one CCD to hit the maxi
142.
by jagrsw 4y ago
I remember vaguely that AmigaOS kept some remnants of this convention. Not from Pascal but from sth called B/CPL. A few (small majority) of system functions took arguments in this peculiar [<len><string>] format. Afaik Amig
143.
by jagrsw 4y ago
It opens itself up to interesting interpretations ;). god(s) aka the simulation developer(s) playing with outcomes of quantum events in order to manipulate your/my behavior, punish the bad, reward the good, make the bushes burn etc. Si
144.
by jagrsw 4y ago
> brain and physics are very deterministic Not to get too much into the 'quantum woo' territory, but my naive understanding is that the physics is only somewhat deterministic, b/c non-deterministic quantum events can have
145.
by jagrsw 4y ago
> the same way we can get arbitrarily close to 1 by adding more 9s to a string of 9s Technically 0.(9) == 1
146.
by jagrsw 4y ago
It's a bit sad that when one searches for "Who broke the Enigma device first" it's typically Alan Turing whose picture pops up first. The situation is much better than 20-30 years ago, where the Polish mathematicians we
147.
by jagrsw 4y ago
IIRC ~70CHF for the outlet (which only works with the Feller electrical wall outlets AFAIK) + 10CHF (RJ45 module) + 20 CHF (single-port LC/APC module). The cable extension is expensive, 150CHF or so for 20m, but you'd probably nee
148.
by jagrsw 4y ago
I use the Feller one - https://www.feller.ch/de/Produktangebot/Kommunikations-und-N... - and it's indeed LC/APC. My setup is much simpler - I get 25Gbit/s from init7 to Mikrotik CCR2004 https:&#x2F
149.
by jagrsw 4y ago
> because unhappy people are more likely to want change. Things are constantly changing wrt. societal+economic measures - Gini, GDP, longevity (excl. short term perturbations). If anything conservatives might be unhappy that things are c
150.
by jagrsw 4y ago
Biased opinion here (working for Google). I love Linux and I would consider myself a power user (understanding HW arch, working with kernel sources). Basic Chromebook apps (+ Play Store) are something that "just work" for 80% of t

More ›