Hacker News: melchebo

New comment by melchebo in "My Home Fibre Network Disintegrated"

melchebo — Sun, 11 Jan 2026 16:30:27 +0000

First question, bomb shelter??

Next what popped in my head, “Military grade means, made by the lowest bidder.”

New comment by melchebo in "I can't upgrade to Windows 11, now leave me alone"

melchebo — Mon, 22 Dec 2025 02:29:50 +0000

Do not connect it to the internet. Problem solved.

Basically anything in a social network needs to learn to defend itself against threats. Make computer a hermit, and it can go without updates for a long time.

(Oh, but you don't like that? Well, Microsoft doesn't like getting in the news for some worldwide botnet of all Windows 10 machines. I bet they'll figure this out sooner or later.)

New comment by melchebo in "This map is not upside down"

melchebo — Fri, 19 Sep 2025 17:48:24 +0000

Maybe you'll like this, if you download this .html and view it, you'll see a random projection from a random spot on earth.

https://gist.github.com/HenkPoley/8fa7a4a8e25f106585584463c1...

Sadly mostly north oriented.

Did some more vibe coding: https://gist.github.com/HenkPoley/0a0eac0e81c53145dec8c19568...

New comment by melchebo in "Do not download the app, use the website"

melchebo — Sat, 26 Jul 2025 05:27:50 +0000

Browser versions tend to burn more power.

New comment by melchebo in "4K4D: Real-Time 4D View Synthesis at 4K Resolution"

melchebo — Wed, 18 Oct 2023 07:46:36 +0000

LookingGlass' small portrait display is more like (2D) lenticular. Their larger displays use a micro lens system that directs pixels out in beams in different direction. So you also get parallax in the up & down direction.

New comment by melchebo in "4K4D: Real-Time 4D View Synthesis at 4K Resolution"

melchebo — Wed, 18 Oct 2023 07:44:31 +0000

I wonder what kind of rig is needed for recording that. It has to be at a least a few different viewpoints.

New comment by melchebo in "Intel deprecates SGX on Core series processors"

melchebo — Sat, 16 Apr 2022 06:59:49 +0000

https://techcommunity.microsoft.com/t5/it-transformation/mic...

New comment by melchebo in "Framework Benchmarks Round 19"

melchebo — Fri, 29 May 2020 11:14:54 +0000

For the moment (well, february) the improvement with PHP 8.0 JIT is minimal: https://www.phoronix.com/scan.php?page=news_item&px=PHP-8.0-...

But usually a JIT is made in a way that you can then move forward with your optimizations in small tested steps. So it makes sense for JITv1 to have a very similar performance as the non-JITed version. It probably generates highly familiar code. First make it do the same, then optimize.

New comment by melchebo in "Framework Benchmarks Round 19"

melchebo — Fri, 29 May 2020 06:13:41 +0000

Slightly concerning that a few of their Netty benchmarks show high error counts. Usually meaning it could not handle the load, and behaved odd.

New comment by melchebo in "Turkish government revokes ham radio licenses"

melchebo — Thu, 21 Jul 2016 08:30:36 +0000

There a Turkish ham radio operators replying on the blog that they know of nothing of this kind. Maybe this "news" was made up?

New comment by melchebo in "Consciousness: The Mind Messing with the Mind"

melchebo — Wed, 06 Jul 2016 14:40:22 +0000

Seemingly the only relevant reply in this comment section. That said, the article is kind of vague and has a few big misunderstandings unrelated to Tononi's Phi and Information Integration Theory.

Phi is basically a complexity metric that tries to put a number on the effect of memory in a system. I'm unsure wether this has any relation to 'consciousness', but it's at least interesting to measure effects of having a low or high Phi.

For example functional programming languages favor a low Phi. Everything is defined by the input, memoization is possible (sort of what you call 'mocks' in other programming languages). There are no side-effects (memory of past events elsewhere), or at least they have to be invoked explicitly as 'unsafe' operations.

Also, code that calculates Phi: https://github.com/wmayner/pyphi/blob/develop/pyphi/examples...

New comment by melchebo in "Alan Kay has agreed to do an AMA today"

melchebo — Tue, 21 Jun 2016 16:01:24 +0000

What do you think of their recent Swift Playground programming education effort ?

New comment by melchebo in "Apple stops support for WebObjects"

melchebo — Sat, 14 May 2016 04:20:04 +0000

Chris Granger (of Light Table fame) and his bunch at Eve are working on something like that. There are a bunch of presentations on YouTube. They are more looking at it abstractly as a possible programming / data model, than purely 'compile an Excel sheet to a programming library'.

Eve: https://twitter.com/with_eve Chris Granger: https://twitter.com/ibdknox

New comment by melchebo in "Craig Steven Wright claims to be Satoshi Nakamoto"

melchebo — Mon, 02 May 2016 09:30:13 +0000

Or donate some of the first blocks (s)he mined.

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Sun, 17 Apr 2016 15:51:21 +0000

Just read the paper, it's explained. Or read the presentation, it uses pictures.

Basically they run R, a single threaded statistics tool which is setup to hog a core, and in some other cgroup a wildly multithreaded tool. If you have a NUMA system (check with `lstopo`) then it's possible that the scheduler thinks the many tasks in one domain of cores is balanced with just R on one core of another domain. Meaning you can have several (ex: 7 out of 8) cores idle. It has to do with the way hierarchical rebalancing is coded, and that their 8x 8-core AMD machine has a deep hierarchy.

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Sat, 16 Apr 2016 15:35:11 +0000

Presentation PDF: http://www.i3s.unice.fr/%7Ejplozi/wastedcores/files/extended...

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Sat, 16 Apr 2016 04:17:39 +0000

Most recent Intel cores actually appear to be slightly slower at integer performance. http://imgur.com/a/2fiLF

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Sat, 16 Apr 2016 03:50:46 +0000

A lot of their bugs are induced when you have a cgroup with multithreaded/-process tasks and a cgroup with just a few using processor time.

Just testing one benchmark will not show it, unless you have something else running too.

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Fri, 15 Apr 2016 12:32:10 +0000

It seems like everything with buffer/process queues needs a good polish to optimize for fairness.

E.g. this is just being readied: http://blog.cerowrt.org/post/fq_codel_on_ath10k/

(also note higher throughput as result)

New comment by melchebo in "The Linux Scheduler: A Decade of Wasted Cores [pdf]"

melchebo — Fri, 15 Apr 2016 11:49:08 +0000

You check wether your system in NUMA with `lstopo`.