bdd

9 ms·

31.
by bdd 6y ago
I truly appreciate Backblaze publishing these but it's paramount to remember their disk usage pattern is fundamentally different than yours. This data is almost irrelevant to majority of their audience trying to deduce something out of
32.
by bdd 6y ago
If you found this interesting but didn't fully get some of the things explained, I can recommend checking out W2AEW's video where he explains things on paper and illustrates them on the bench in under 12 minutes. https:/&#x2
33.
by bdd 6y ago
Try this: Incumbent products are so bad and so expensive to the degree it’s noticeable for a company this rich. Noticeable enough that it decides to spend money in engineering and highly custom hardware manufacturing is still a better bang
34.
by bdd 6y ago
I see some replies from GH employees. Do you intend to support /v1/search or /v2/_catalog APIs? Would be nice to have access to at least public image listing like Docker Hub's.
35.
by bdd 6y ago
You can further Emacsify or customize text controls to your heart with a `DefaultKeyBinding.dict` file. This what I've been using for ~8 years. Apple removed a few functions here and there but still plenty are available. Reference URL
36.
by bdd 6y ago
I run an apu2c4 at home, with 1 Gbps internet connectivity. It’s a two legged setup, one leg to the ONT, and one leg to the switch carrying dot1q tagged VLAN traffic. It never fails to saturate that internal interface and does that with ~20
37.
by bdd 7y ago
Maybe it wasn't very clear in my comment but "correctness issues" more-or-less literally mean the instruction's result is incorrect. Like you ask 2*2 and it gives you 0xfff1309f. So depending on how you rely on that resu
38.
by bdd 7y ago
“Unable to perform AVX2 instructions correctly under heavy load” is also a common “WTF Intel!?”–inducing phenomenon. I’m certain SREs who work at companies with more than 1 million servers have a bunch of hair pulling stories. Most (all?) I
39.
by bdd 7y ago
I miss the kind strangers who genuinely cared about helping others without being abrasive jerks. I learned a lot on IRC; made many new friends. This was back in 1994–98 when I was growing up in Turkey. The scene was rather small yet still
40.
by bdd 7y ago
Here's the equivalent in C++, compiled with clang 9.0.0 at optimization level 1. https://godbolt.org/z/nKSG9_ Byte for byte identical assembly.
41.
by bdd 7y ago
Anyone can build a frontend. "Java bytecode" is in that list too. It doesn't mean defacto compilers of these languages rely on LLVM.
42.
by bdd 7y ago
These are not about abstractions but compile time optimizations. These are also not implemented in the Rust compiler but LLVM. So any any language frontend in front of LLVM would yield the same optimizations. According to Wikipedia the lis
43.
by bdd 7y ago
It’s from Facebook’s Red Team, which attacks Facebook and tries to move laterally like a real, motivated, and persistent attacker. They build some nice tooling, sometimes more advanced and well thought than what attackers actually use to st
44.
by bdd 7y ago
You probably want year round low humidity and relatively low temperatures following the seasonal curves. Oregon's High Desert ( https://en.wikipedia.org/wiki/High_Desert_(Oregon) ) is a good one. Apple and Facebook
45.
by bdd 7y ago
Personal experience spanning across my time at Twitter and Facebook, DPDK is definitely faster but it is (/was) a pain in the butt to program and share the NIC with the host. XDP allows you to reuse very many packet parsing / hand
46.
by bdd 7y ago
The number increases because there are various monitoring tools. Stuff like something that extracts more data from TCP retransmits so we have a better understanding of congestions and errors in the network path. ...or things that simply col
47.
by bdd 7y ago
https://github.com/iovisor/bcc/tree/master/examples/cpp/pype...
48.
by bdd 7y ago
Excuse me while I shill for my employer but we're indeed big fans of BPF at Facebook. Our L4 load balancer is implemented entirely in BPF byte code emitting C++ and relies on XDP for "blazing fast" (comms approved totally sci
49.
by bdd 7y ago
Not only WhatsApp but there are no files checked into any Facebook source repository with .ex or .exs suffix and looks like Elixir.
50.
by bdd 7y ago
This isn't true at all. Major functions of WhatsApp are implemented in Erlang and they're actively worked on. Source: Self. Engineer at FB.
51.
by bdd 7y ago
look closer to the first image in the linked URL. it's printed on paper and photo is taken with a phone. you can see the flare from an overhead room light or maybe camera flash in the middle and printed paper's wave on the upper l
52.
by bdd 7y ago
AmigaOS Workbench 1.2 had an easter egg displaying the title of this post in the menubar. Turns out engineers from Los Gatos office were pissed and included this in the release. I've long forgotten the key combination and actions to tr
53.
by bdd 7y ago
I don't see the value in lamenting the old days of a few machines where you could actually name them as Middle Earth characters, install individually, log in to one single machine to debug a site issue. The problems were smaller and in
54.
by bdd 7y ago
If you are bored one day and around Menlo Park, come have a coffee or ice cream at FB campus. You can troll me in person.
55.
by bdd 7y ago
geez, tough crowd. do you wanna ten dollar hug?
56.
by bdd 7y ago
> How does the fact you worked at those companies relate to #4? For Facebook I worked on the incident, previous Wednesday. 9.5 hours of pain... And for my past employers, I still have friends there texting the root causes with facepalm e
57.
by bdd 7y ago
#4 I work at Facebook. I worked at Twitter. I worked at CloudFlare. The answer is nothing other than #4. #1 has the right premise but the wrong conclusion. Software complexity will continue escalating until it drops by either commoditizatio
58.
by bdd 7y ago
end-to-ends (notice plural) encrypted images are also served from the CDN.
59.
by bdd 7y ago
Was Akamai also down or you assumed Facebook still uses Akamai? If the latter, I can say for the last 2 years Facebook didn’t use Akamai to service any geographic location.
60.
by bdd 7y ago
A small nit about Curve25519 vs X25519. The name of the curve is Curve25519, while the name of Diffie Hellman function utilizing the curve is X25519. Same with Curve448 and X448. That's why the line `TLS curves: X25519, prime256v1, sec

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