klempner

6 ms·

31.
by klempner 9mo ago
The almost as interesting takeaway I have (which I am sure is in their internal postmortem) is that they presumably don't have any usage of glibc getaddrinfo clients in their release regression testing.
32.
by klempner 10mo ago
The actual algorithm (which is pretty sensible in the absence of delayed ack) is fundamentally a feature of the TCP stack, which in most cases lives in the kernel. To implement the direct equivalent in userspace against the sockets API woul
33.
by klempner 10mo ago
Speaking of Slashdot, some fairly frequent poster had a signature back around 2001/2002 had a signature that was something like mv /bin/laden /dev/null and then someone explained how that was broken: even if that su
34.
by klempner 10mo ago
Sure, in the middle of a magnitude 9 earthquake I'd rather be in the middle of a suburban golf course (as long as it is far from any coastal tsunami) than any building, but I don't spend the majority of my time outside. Two issues
35.
by klempner 10mo ago
As someone who is super nearsighted, the smaller screen on a phone is great for reading, especially in contexts like bedtime reading where I want to have my glasses off. I have read many hundreds of books this way. The problem with a tablet
36.
by klempner 10mo ago
There's a weird fetishization of long uptimes. I suspect some of this dates from the bad old days when Windows would outright crash after 50 days of uptime. In the modern era, a lightly (or at least stably) loaded system lasting for hu
37.
by klempner 1y ago
Are you sure you're not thinking of "SmartDay" days that are part of the SmartRate program? Flex Alerts are CAISO and ultimately about grid stability. SmartRate/SmartDay are ultimately about marginal cost of production o
38.
by klempner 1y ago
Are you sure these "cheap vape pens" don't just use 5V3A, which doesn't require any PD negotiation at all? (a lot of them screw even that much up, and a lot of people confuse "PD negotiation" with simply having
39.
by klempner 1y ago
Any currently existing (to say nothing of two years ago) "TB/USB4" chipset would dramatically increase the price of something with a retail price on the order of $50. With that said, DisplayPort Alternate Mode would be consid
40.
by klempner 1y ago
> That would be 100 watts! The point is that power dissipation in a cable is a function of the current going through it. The cable will get exactly as hot carrying 5 amps with a voltage of 5 volts as it will carrying 20 or 48. (now, that
41.
by klempner 1y ago
> NEVER. EVER. EVER. Leave a test early. It has been nearly 20 years, but my rule of thumb was that I wouldn't leave until I had done *three* review passes of the test. That is, quadruple checking, completing the exam and then revie
42.
by klempner 1y ago
Huh? There are plenty of good reasons to complain about the 5V5A thing, but "fire hazard" is not one of them. It is even entirely within spec for a PD power supply to offer a 5V5A PDO, as long as it is only doing so with a 5A capa
43.
by klempner 1y ago
At the very least, the benefits of QUIC are very very dubious for low RTT connections like inside a datacenter, especially when you're losing a bunch of hardware support and moving a fair bit of actual work to userspace where threads n
44.
by klempner 1y ago
The somewhat moribund Foresight Exchange which is a ~30 year old play money idea futures market has discussed this idea a lot over the years, even to the point of having a number of "True" claims of exactly the form described in t
45.
by klempner 2y ago
Speed of light is very relevant for actual performance sensitive software, not just shitty overly chatty trash. While in practice the latency is over an order of magnitude larger, the speed of light round trip distance between two sockets o
46.
by klempner 2y ago
How exactly does this interact with fork()?
47.
by klempner 2y ago
The idea that RAII covers "99% of your ass" is "the low-IQ level statement". Temporal safety is the primary hard problem from a memory safety standpoint, and RAII does nothing to solve it at least the moment a memory all
48.
by klempner 2y ago
And browsers don't support them either, at least in any useful manner.
49.
by klempner 2y ago
What's particularly confusing is that this appears to be coming from the dev team themselves -- this isn't some rando pointing at an interesting unprepared github they found. Like, if they're looking for publicity by sharing
50.
by klempner 3y ago
Try living in Japan, where you're generally forced to use the name in your passport, including any middle names included (with space) in given name. Meanwhile a typical Japanese name is no more than three characters each for family and
51.
by klempner 3y ago
This is ultimately just a bunch of bog standard USB and DisplayPort (even the HDMI is going to look like DisplayPort to the host). It should work as well as any other Thunderbolt dock works in Linux. There's some room for driver issues
52.
by klempner 3y ago
Yes, grpc_cli tool uses essentially the same mechanism except implemented as a grpc service rather than as a stubby service. The basic principle of both is implementing the C++ proto library's DescriptorDatabase interface with cached r
53.
by klempner 3y ago
Unfortunately such a tax would be limited by prop 13 in California. While the proposals here can be implemented on a local level, any change to prop 13 would be a state level ballot proposition. (For the record, I'd love to see reform
54.
by klempner 3y ago
In practice the only widespread attack that either TOTP or SMS authentication help with is credential stuffing, and if you use a password manager to use unique passwords on each site you're not susceptible to credential stuffing to beg
55.
by klempner 3y ago
I will remark that, excluding cases where some idiot is offering several times what the company is worth, it is rare that the fiduciary duty issue would force the management of a company to choose unsustainable immediate gains. The value of
56.
by klempner 3y ago
And of course that guarantee has its own problem, namely that (especially in a multithreaded process) a use-after-close error is vastly more likely to cause corruption via a write to a newly opened file in the old file descriptor. And in al
57.
by klempner 3y ago
The funny thing is that select's APIs are compatible with a non-broken implementation, such as something that heap allocates if above a constant size. My recollection is that some implementations (winsock?) even do this. Of course, tha
58.
by klempner 3y ago
How can you come up with an "upper bound estimate" without having some idea of the structure of the computation of the specific 748 state Turing Machine in question? Imagine you had an oracle telling you BB(748) excluding this mac
59.
by klempner 3y ago
The flip side here: the ads I get on Quora are just terrible -- about 1/3 of it is some "stud briefs" underwear and about 1/3 is promoted CCP propaganda. These are the ads of "they can't come up with enough ads
60.
by klempner 3y ago
That's somewhat dialect/accent dependent.

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