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Archived threads in /g/ - Technology - 5569. page

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Can anyone explain how linux's cp command works? Just now I was copying a large set of files to a USB3 drive formatted to exFat, and the displayed transfered speed was something like 6 MB/s. However, at one point I alt-tabbed back to the progress window and saw a warning of something like

>file could not be created, retry/skip

I chose to skip, and then suddenly the transfer speed jumped up to 50 MB/s for a while before returning back to 6 MB/s.

>tl;dr does cp keep running while showing the warning and ostensibly halting, and instead writing to RAM instead of to the destination dir, before unloading all those files from RAM to the destination once the warning gets approved?
6 posts and 2 images submitted.
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>>57895391
it just werks
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>>57895428
I would like a proper CS explanation.
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>>57895391
It does not keep writing. Since CP halted, that gave the buffers/bus a chance to catch up. Anything that is written anywhere basically just goes through a bunch of cache hierachies. The program performing the write (cp) has a cache in its own process, the operating system has (at least one) caches at the filesystem-level (maybe more), then the harddisk has internal caches, etc.

Pushing to the closest cache (the one in the process) is basically instant, then the next one is slower (have to cross userspace<->kernel-space boundary) then the next one is slower still (maybe the next one is an os<->filesystem driver boundary) then the next one is slower still (maybe the next one is a ram <-> usb host device boundary then there may be the USB bus in the way (another slow-down), then there might be another one internally in the USB-stick, after which the final step is the actual silicone.

So as a result your writes start out extremely fast until the first cache is filled, and from there on slowly degrade until all caches are full, at which point you are writing at the actual speed that the entire system can support, end-to-end, from your process all the way to the silicone of your NAND flash or whatever. Once you halt the writing, you give all of these caches an opportunity to drain and catch up.

And of course you are probably also reading the data from somewhere, which might also play into it. There will be another hierachy of caches involved there (but I suspect in this case that that's not gonna be the bottleneck, e.g. if you're copying from an SSD to usb)

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Why aren't you using FreeBSD? It has far better gaming performance than Linux and isn't made by SJWs/GNUmales
>BSD users actually kiss girls
>GNU was made because of some crazy man's communist ideas
>BSD was made because of love for UNIX
>BSD doesn't force you to share code like GPL licensed software
>no SystemD shit
>BSD is battle ready as proven in MacOS, iOS, PS4 and many more devices
>no ALSA/Pulseaudio garbage

I think the answer here is clear
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>>57895362
Poo in loo Rajeesh.
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>>57895418
>Apple general
>Freecucks
>Thread is about FreeBSD
Richard leave
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>>57895362
linus is literally the cutest in the game
your image is trash, anon

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>tfw this will never be topped
why all players are huge and ugly now?
26 posts and 7 images submitted.
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>>57895353
They aren't huge, you just have to take a few minutes to customize it. If the player isn't shit then it's just a few clicks
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>tfw I will never be topped
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>>57895353
>why all players are huge and ugly now?

They were designed to match your mom.

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what part of the IT industry has the most work in Australia?
36 posts and 4 images submitted.
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>>57895342
>hello yes is this [ISP HERE]? why is my internet slow?
>sir you live in Australia
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>>57895342
http://www.theage.com.au/business/workplace-relations/proportion-of-indian-it-workers-on-457-visas-rock-bottom-pay-triples-20161202-gt2nso.html

I am only interested in what can be done to stop this.
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networking?
network security?
programming? phone apps?
web dev?
pls name it
pls respond

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>coding is easy

LOL, /g/ BTFO!
242 posts and 32 images submitted.
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>>57895271

Kill yourself.

>>57889441
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So a family member just got an iPhone (after being an android user for the last... forever).
And she asked me for help doing some things. So having never used an apple device, I feel like a fucking retard.
Her: "How do I add my mom to the homescreen so I can call her?"
"Oh that's easy, just long press the home screen.
Hmm... that's not working.
Okay, go to contacts.
Um... there should be an option... maybe in 'edit'?
No? Crap.
Uh, I'm not sure, let's ask siri.
'Hey siri, how to add contact to home screen.'
'This is what I found for: How to add a contract for home season.'
"

After fucking with it for like 30 minutes apparently you have to download a third party app?
Seriously?

So then I was messing with the settings and... there's no back button? Or toggle app button?
To change apps I have to go back to the home screen and keep clicking the app I want?
Freaking really?

What is the appeal of these over priced pieces of shit?
32 posts and 5 images submitted.
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>Her: "How do I add my mom to the homescreen so I can call her?"
what? do you mean an icon that just takes you to your mom's contact page?

you can't do that in iOS. if you want to call her, open the phone app. if you want to message her, open iMessage.

you said you feel like a fucking retard. don't second guess yourself.
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>>57895169
No like an icon that you click and it automatically calls the person. Like on Android. Instead of having to open the phone app and selecting a name, you just click the name on the homescreen.
>>
You are not feeling like a fucking retard, you are one. Don't have to go huge mental gymnastics to go on phone and call someone there. Add frequents to favorite tab. You double touch home button to change app or in newer iOS versions you can touch upper left corner

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Hey guys, I have to give a presentation in class today. It's supposed to be on a ksh shell command. It has to be one we didn't go over in class(i.e. the basics that go with scripting).

Anyone know some cool ksh/bash commands?
9 posts and 5 images submitted.
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/kill self
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>>57895140
pls, I can't find anything on google.
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Post technology that makes you painfully erect
180 posts and 73 images submitted.
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>>57895107
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Are there ANY Verizon shills on here? I attempted to activate my s7 edge Exnyos version (The one with the unlocked bootloader) on there network. I went in but the damn sales rep AND the manager both said no because it would compromise my "safety". They offered to replace it free of charge but they kept pushing that damn "Safety" meme saying with an unlocked bootloader I'm vulnerable to hackers. Is this a thing you guys push so you get your phones that are filled with crapware? Or is it just because you don't want me to get root?
26 posts and 6 images submitted.
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They don't want you to root. They make phone manufacturers to lock bootloaders even if the same phone on other networks can be unlocked
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>>57895033
But why though? Is root to them seen as the big ugly monster? Or is it because the Normies don't care about root? Or cause they don't want to deal with it? I'm passed and I'm probably going on tmobile
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>>57895018
They don't want you to have root access. Also they want to sell you their bloated phones.

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Bleachbit > CCleaner

What cleaning software do you use personally?
26 posts and 3 images submitted.
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Why is it better?
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>>57894989
The kind of people that use this stuff are the very same that fall for poo in loo calls about the virus on their windows.
>>
shred

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Let's talk about "team colors" (and help me decide which color fan to get):

http://www.newegg.com/Product/Productcompare.aspx?CompareItemList=%2D1%7C9SIA7TD52D1283%5E9SIA7TD52D1283%2C9SIA7TD52D1369%5E9SIA7TD52D1369

>be amd fanboy since first k6-2 in 1999 ('98?)
>build opteron 1210 he in 2007 ('08?)
>just built a10-7860k machine today (yesterday?)
>decide to buy cool tube-lit casefan
>no gpu pure amd
>know nowadays amd is red team
>'memba amd was green team back before buying ati
>prefer green cuz history and muh borg but know it's probably way too bright and will fill my bedroom with bright green unsleepable light
>like the cheery red like a soothing fireplace not too harsh and of course muh amd red team
>cannot decide
>literally cannot decide
>buy which one
>red or green
?
9 posts and 3 images submitted.
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>>57894959
>also red doesn't hurt my eyes at night
>but green looks so cool
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>unironically having a window in your case

you need to be 18 to post here
>>
Red - Sith
Green - Jedi

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Post your hackintosh builds
10 posts and 5 images submitted.
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>>57894908
No hackintoshes in /g/? Damn
>>
I'm gonna get a NUC for hackintoshing soon.
Also, having a SSD is an insane difference with macOS.
>>
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>>57894953
you waited 6 minutes. don't be an impatient retarded faggot.

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I got a decent dual monitor setup at work (dual 27" QHD's) but at home I want to do a single 30-34" 4k display because fuck bezels.
My macbook pro can drive 4k@60hz, and my desktop with a 7970 may(?) be able as well.

I wanna get a most bang for the buck.

What does /g/ think of the QNIX for $420?

It seems to check all the boxes:
32" matte screen
4k
IPS
HDMI 2 / DP1.2 @60hz
<$500
134 posts and 14 images submitted.
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>>57894850
>30-34
>programming
a TV
>>
>programming
>4k
>40"
lol.

get a 24 or 27" 4k monitor. you basically get a 24" retina display. put it in portrait orientation and it's perfect for programming.

40" monitors are retarded. stop listening to retarded gamers.
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>>57894850
>4k monitor
>for programming

for what fucking purpose

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Has anything interesting been written in common lisp/any lisp dialect? This isnt a shitpost, im just curious as the only real world application ive seen of lisp dialects is as a scripting language.
8 posts and 1 images submitted.
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>>57894841
A lot of NLP stuff/AI, especially in academia, is written using Lisp and other similar functional languages.
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>>57894841
Look up Paul Graham's discussion about how the early Yahoo website builder was written in Lisp.
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>>57894841
GNU Emacs

Why haven't you upgraded to Devuan /g/?
97 posts and 11 images submitted.
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Links to download Devuan latest beta
https://devuan.org/
https://devuan.org/
https://devuan.org/
>>
Yet another meme distro
>>
How do they deal with systemd dependent software like gnome?

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