majke

11 ms·

91.
by majke 2y ago
What is your location? Here, in Poland, its mostly the kids bringing infections home. I usually expect at least one week off due to sickness in early fall, and then proper flu (taking around 10 days) in december/january. This is the no
92.
by majke 2y ago
Thanks for the pointer. The file comment says: // This is a block Bloom filter (from Putze et al.'s "Cache-, Hash- and Space-Efficient Bloom Filters") with some twists: // 1. Each block is a split B
93.
by majke 2y ago
Of course it's not that simple. This "IP address pop catchment" thing is an area of active research. Even we do weird things, like: https://blog.cloudflare.com/cloudflare-servers-dont-own-ips-...
94.
by majke 2y ago
Random memory access is really slow (compared to CPU speed). Therefore it's strictly faster to do exactly one random memory fetch (hashtable) than many (bloom filter).
95.
by majke 2y ago
> What is UDP offload going to do? Handling ACK packets in kernelspace would be one thing - helping for example RTT estimation. With userspace stack ACK's are handled in application and are subject to scheduler, suffering a lot on
96.
by majke 2y ago
https://blog.cloudflare.com/white-house-routing-security/ > Unfortunately, the US is lagging behind: Only 39% of IP prefixes originated by US networks have a valid ROA
97.
by majke 2y ago
This is a big deal. With some tooling around it can be amazing. I can think of using this for testing, and as a vehicle to change a programming paradigm of existing/legacy software (run a thing, and roll it back aggressively from outsi
98.
by majke 2y ago
„Worthwhile” is relative. https://meltingasphalt.com/a-nihilists-guide-to-meaning/ Find something you deeply believe is worthwhile. Something like volunteerinfor homeless, helping war victims, religion. Make this your
99.
by majke 2y ago
Do you get captcha or block page?
100.
by majke 2y ago
vpgatherdd - I think that for newer CPUs it is faster than many loads + inserts, but if you are going to fault a lot, then it becomes slow. > The VGATHER instructions are implemented as micro-coded flow. Latency is ~50 cycles. https:&#x
101.
by majke 2y ago
Last time i looked at intel scatter/gather I got the impression it only works for a very narrow use case, and getting it to perform wasn’t easy. Did I miss something?
102.
by majke 2y ago
> In the US, iPhone has a 58.81% market share There are demographics where Apple has dominance.
103.
by majke 2y ago
> The key idea behind our threat model is that end devices using a VPN connection will, by default, send all their traffic to the same destination (the VPN server) identified by its public IP address – Refer to Figure 1. On the other han
104.
by majke 2y ago
Sounds like second system syndrome.
105.
by majke 2y ago
This is pretty cool, improved CLI on Linux: ping ff02::1%<INTERFACE> -c 2 -i 100 -w 4
106.
Professional Aptitude vs. Tenure (2022)(ilya.grigorik.com)
2 points by majke 2y ago|0 comments
107.
by majke 2y ago
> Even economy class plane seats have power outlets these days. Hopefully Intel will iterate on both hardware and software to expand NPU use cases going forward. I can totally see myself doing inference on my phone, but arguably - this i
108.
by majke 3y ago
I write low level code. I need to profile it. It's enough pain to try to understand performance in the turbo boost model. Then Intel was adding avx512 throttling. Now the P vs E cores and some P cores having different max ghz from othe
109.
by majke 3y ago
Can you vectorize this with SSE. Most of the magic could be done with vector of four 32 bit integers. The question is if the cost of setting up the initial vector and extracting the result isnt prohibitive.
110.
by majke 3y ago
Can a binary even be gpl?
111.
by majke 3y ago
sigprocmask is a neat solution, but requires a syscall. Would it be theoretically possible to share the signal mask between the userspace and the kernel in no-cost way? I'm thinking vDSO style, mmaped var. This could have big implicati
112.
by majke 3y ago
Is there a toy for older kids (9-14yo?) that would allow creating a higher level computer? I'm thinking about composable gates, shifters, adders, etc. I want a physical object (not software). My kids are past basic soldering and playin
113.
by majke 3y ago
I think the date selector is a must. My biggest timezone confusion happens during these two weeks when the US changes the daylight and the EU is not changed yet. So... during the two weeks in a year 9:00am SF time is not 18:00 EU time.
114.
by majke 3y ago
In the blog post "Branch predictor: How many "if"s are too many?", I started with the same premise, but focused on branch predictor :P https://blog.cloudflare.com/branch-predictor
115.
by majke 3y ago
I love it. I did something very similar but for command line escaping. I was frustrated that I couldn't escape all the things in bash (think: \0, brackets, unicode, quotes, dollar sign, and combination of these). I teased my colleagues
116.
by majke 3y ago
Dan Luu famously doesn't have timestamps on the blog posts, like https://danluu.com/cpu-bugs/ There is date on the index page Jan - 2016, however it's not obvious from the content page. I think the argument i
117.
Errno – ENOANO 55 No anode – what is it?(unix.stackexchange.com)
1 points by majke 3y ago|0 comments
118.
by majke 3y ago
Yeah, in i386 syntax there is no way to address EIP directly. poping EIP from call is a common trick. In newer processors there exists a cache for return addresses Return Stack Buffer (RSB). But there is a penalty for doing call and never d
119.
by majke 3y ago
I think the problem is different. This is not about a technical possibility. This is about who will submit and manage the CSAM fingerprints. With the technology it will be trivial for oppressive governments to query which citizens have a co
120.
by majke 3y ago
Nope, this looks like it's about opening streams (with related work) and closing them in rapid succession, over an established connection.

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