melchebo

6 ms·

1.
by melchebo 4mo ago
Btw, the bug itself was introduced in 30656c5e by Claude Code, and I guess.. improper human review and testing. https://github.com/RsyncProject/rsync/commit/30656c5e Someone using AI to bisect recent rsync.
2.
by melchebo 8mo ago
First question, bomb shelter?? Next what popped in my head, “Military grade means, made by the lowest bidder.”
3.
by melchebo 9mo ago
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 t
4.
by melchebo 1y ago
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 o
5.
by melchebo 1y ago
Browser versions tend to burn more power.
6.
by melchebo 3y ago
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.
7.
by melchebo 3y ago
I wonder what kind of rig is needed for recording that. It has to be at a least a few different viewpoints.
8.
by melchebo 4y ago
https://techcommunity.microsoft.com/t5/it-transformation/mic...
9.
by melchebo 6y ago
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 op
10.
by melchebo 6y ago
Slightly concerning that a few of their Netty benchmarks show high error counts. Usually meaning it could not handle the load, and behaved odd.
11.
by melchebo 10y ago
There a Turkish ham radio operators replying on the blog that they know of nothing of this kind. Maybe this "news" was made up?
12.
by melchebo 10y ago
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 t
13.
by melchebo 10y ago
What do you think of their recent Swift Playground programming education effort ?
14.
by melchebo 10y ago
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 &#x2
15.
by melchebo 10y ago
Or donate some of the first blocks (s)he mined.
16.
by melchebo 10y ago
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
17.
by melchebo 10y ago
Presentation PDF: http://www.i3s.unice.fr/%7Ejplozi/wastedcores/files/extended...
18.
by melchebo 10y ago
Most recent Intel cores actually appear to be slightly slower at integer performance. http://imgur.com/a/2fiLF
19.
by melchebo 10y ago
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.
20.
by melchebo 10y ago
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
21.
by melchebo 10y ago
You check wether your system in NUMA with `lstopo`.
22.
by melchebo 10y ago
That might be what they call the 'overload on wakeup' bug. Maybe try the patch? I've read that the patch additionally needs a small fix, the goto label position went missing. Probably just before rcu_read_unlock() in that fun
23.
by melchebo 10y ago
This research applies to 'NUMA' systems. Commonly servers with multiple physical CPUs that each have a connection to their own memory banks. They can access memory of the other CPU by requesting it, but that take time. So the proc
24.
by melchebo 10y ago
From what I understand from this presentation the 'scheduling domain' abstraction is reused through different layers of the hierarchy. So for example the two hyperthreads on one logical core are also modeled as 'scheduling do
25.
by melchebo 10y ago
The scheduler looking at an idle core decides wether to steal work from an overloaded neighbor. It will only compare over the interconnects in the figure (between domains). E.g. the the two cores in the dark grey box can steal work from eac
26.
by melchebo 10y ago
It should probably mainly be seen as a proof of concept for their scheduler decision visualization tools. Which are not public for the time being. That should make checking and fixing bugs easier in the future.
27.
by melchebo 10y ago
The conference where this will be presented starts next week. So I think they'll post it after they catched up some sleep after that.
28.
by melchebo 10y ago
From the looks of it, this mainly applies if you are running a NUMA system. Which you probably are not. Though it may apply in other places where 'scheduling domains' are used to model hardware (e.g. hyperthreading and maybe big
29.
by melchebo 10y ago
The last paragraph of that segment says they pick it because it's the first in the list of idle cores. E.g. if a core is no longer idle it removes itself from the list, and it adds itself at the end, so effectively it's ordered in
30.
by melchebo 11y ago
eBay really dug themselves into that hole when they introduced the star rating system. Basically they mapped everybody who wasn't actually known to be bad onto 5 stars. Which is why you get messages begging you to rate them 5 star. Per

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