polyfractal

10 ms·

31.
by polyfractal 10y ago
Just FYI, multicast discovery was moved to a plugin in v2.0 [1], deprecated in v2.2 [2] and removed entirely in v5.0 [3] - [1] https://www.elastic.co/guide/en/elasticsearch/reference/2.0/... - [2]
32.
by polyfractal 10y ago
Will do, thanks for the link! Didn't realize the Pine64 folks had a forum setup. Fair warning, my hardware skills are shoddy at best, but I may be able to help with the Rust side :)
33.
by polyfractal 10y ago
Ah, neat. Thanks for the analysis! I always assumed it was the transmit that ate the power, simply because you need `x` amount of energy to broadcast the signal out. But I can absolutely see how it's the circuitry associated with ge
34.
by polyfractal 10y ago
Ah, yeah, I can see how that would have helped tremendously. Thanks for the tip! :) I cringed when I saw this at the top of HN because I knew the shame that is my soldering skill would be seen by a few hundred people :)
35.
by polyfractal 10y ago
Most people use these little things for sensor/data loggers (weather stations, power monitoring, indoor temperature, etc) or little widgets that need connectivity and can be tethered to a power outlet (small display showing the weather
36.
by polyfractal 10y ago
That's why I quite like the approach of using existing C tooling and SDK, then linking in "user-land" Rust. I wanted to run stuff on the RTL8710, and it seemed crazy to start rewriting all the HAL from scratch. But it only t
37.
by polyfractal 10y ago
This is really just a war of opinions now, but the F1 keys are indispensable to me. My fingers rest on the hotkeys for "step into", "step over", "run to breakpoint" and I can keep my eyes glued to the watch li
38.
by polyfractal 10y ago
Ugh, yeah, backlash on mine too :( I'm actually in the middle of rebuilding my mount to help with periodic errors and backlash. Replacing a bunch of bearings, re-greasing, replacing the direct gear train with a geared-belt system, et
39.
by polyfractal 10y ago
They are usually "dumb" heaters... literally just some voltage applied to wire (you can read more about them here, along with calculation according to wire AWG and length: http://www.blackwaterskies.co.uk/2013&#x2F
40.
by polyfractal 10y ago
In astrophotography, this is actually the opposite of what you want to do. Generally you add cooling so that you can let your sensor run for longer, so you can collect more photons without increasing the noise appreciably. Image stacking c
41.
by polyfractal 10y ago
My astro CCD has a (slow) fan attached the peltier. The vibration isn't usually a big deal for two main reasons: 1) If your setup is sophisticated enough that fan vibration may cause an issue, you're likely already using a german
42.
by polyfractal 10y ago
These are often called "dew heaters", and are really quite simple. It's usually nichrome wire (e.g. what you see in a toaster), or sometimes a bunch of resistors. The tiny amount of heat generated by these straps are enough
43.
by polyfractal 10y ago
The number of jobs wouldn't remain static. The number of jobs would naturally increase to support the increased density of people. Also, some (hopefully large) fraction of the newly unemployed will find employment elsewhere. Few peo
44.
by polyfractal 10y ago
Interesting! I'll give this a read-through tonight, thanks for the link :)
45.
by polyfractal 10y ago
> These illegal immigrants take jobs away from Americans. Eh, this argument gets trotted out a lot, but it isn't exactly clear-cut. The economy isn't a zero-sum game. Sure, illegal immigrants do show up and undercut some jobs.
46.
by polyfractal 10y ago
Well, for one thing, this isn't even attempting an objective comparison. The article basically grabs whatever third party benchmark numbers are available and pretends all the metrics are comparable. In many cases, the external benchma
47.
by polyfractal 10y ago
Yep, just more recent versions, and it's been fixed too. But if you watch the bugs that keep popping up for G1 you see stuff like this fairly regularly. Of course, that's a totally unfair comparison: CMS has had a decade of bug s
48.
by polyfractal 10y ago
Just a note, G1 probably still isn't ready for rock-solid production usage. E.g. bugs like this are still cropping up: https://bugs.openjdk.java.net/browse/JDK-8148175 That's a pretty scary bug. Who knows
49.
by polyfractal 10y ago
This isn't true, just fyi. Lucene actually relies on the OS' filesystem cache heavily. A Lucene index (e.g. an Elasticsearch shard) is composed of many small "segments". Each segment is an immutable file, which allows
50.
by polyfractal 10y ago
Hey, ES dev here. :) The bulk API mainly helps by amortizing various overheads across many documents at once. There isn't anything "special" about the bulk indexing...it doesn't side-step the normal indexing pathway to
51.
by polyfractal 11y ago
I mean, it's not like it's a novel procedure or anything. This is basically how all brains are sectioned for immunohistochemistry. A quick search turned up this protocol, labeled 2006: http://sydney.edu.au/medicin
52.
by polyfractal 11y ago
For better or worse, 'connectome' is a legit term used in the field. It's relatively newish (quickly skimming the literature, first mention was in a 2005 article). It follows the naming convention setup by 'genome&#x27
53.
by polyfractal 11y ago
Agreed, that's why I personally like the rump kernel idea. Pick and choose the various NetBSD drivers that you need, automatically gain battle-tested drivers for a wide variety of devices. Bonus points that they are POSIX-compliant w
54.
by polyfractal 11y ago
Well, that's how all the NetBSD rump drivers work. IIUC, a while back they refactored all the drivers to interact with the NetBSD kernel through the Rump interface. Which means that all the drivers can work in a traditional monolithi
55.
by polyfractal 11y ago
You can do what Rump kernels do: write a shim layer. The linux/netbsd drivers think they are talking to their host kernel, when in reality they are talking to a shim that translates linux syscalls into the equivalent "RustOS&quot
56.
by polyfractal 11y ago
If I understand correctly, Phil started writing his series first. That tutorial prompted several people to start working on their own hobby OS, including Steve's and another one here: http://www.randomhacks.net/bare-me
57.
by polyfractal 11y ago
Oops, sorry, you're right. It was very early this morning and pre-coffee when I wrote that, was paraphrasing colloquially instead of technically (and not thinking) :)
58.
by polyfractal 11y ago
> Some even say cholestrol is not bad The main change recently has been an update to the ACC/AHA LDL guidelines about LDL targets. Previously, there were hard targets that the doctor was trying to reach, in particular the 70mg&#x
59.
by polyfractal 11y ago
It's very common to remove smokers from studies like this (anything looking at mortality). Smoking increases your chance of so many health issues: heart disease, lung cancer, COPD, high blood pressure, stroke, aortic aneurysm, general
60.
by polyfractal 11y ago
Author here. My goal is to (eventually) host a toy key:value store on top of a unikernel. So the KV store would need to persist data to a writable file system. It's great when you don't need to alter state and the unikernel can

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