Root Access - 2017-04-12 (page 1 of 3)

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12:03 AM

> Dear Customer,

OVH is proud to announce the opening of its 20th datacenter worldwide (and counting) at the heart of South-East Asia: Singapore!

Whether you would like to optimise your latency or enter the Asia-Pacific market, Singapore is the easiest place in the world to set up a business with an exciting economic and technological environments.

Take advantage of our limited-quantity special offer on Dedicated Servers in Singapore:

I have to learn JPA, EJB 3.0 and JMS 2.0 - hoping I can find good resources

15 hours ago, by Bob

@JourneymanGeek OVH Sg just opened :P

:P

@allquixotic Ow, ow and ow.

That Brazilian Guy

user image

-1

Q: Setting a Span of Bytes to NULL Speedily

I'm trying to reinvent the memset function in C++, compiled with GCC suite 32&64 bit archs. By 'reinvent', I mean repurpose. I need to zero-set a span of bytes in an array of characters (cast void*) as fast as physically possible. BTW: When I use memset on the whole array (i.e memset(array, 0, l...

15 hours ago,
I WAS ASLEEP

And sulking

£144 a month for an E3 Xeon and 100Mbps bandwidth, eurgh.

Urgh Chrome you stinking pile of shit

"Your connection to this site is not secure"

Great, now WHY is it not secure? They've hidden the info. They've hidden the view certificate page. Everything just redirects to some generic HTTPS help guide

> Not secure: Proceed with caution. Something is severely wrong with the privacy of this site’s connection. Someone might be able to see the information you send or get through this site.

Yeah, and WHAT WOULD THAT BE?

UUUUURRGGGHHHHHH

headdesk

That's it. Fuck Google, I'm switching to Firefox.

5

12:26 AM

@Dog The info is still there, but it's in a slightly more obscure place.

I remember hearing about it on a podcast, but I can't remember where the cert info was moved to.

Journeyman Geek

ugh

@Dog It's available in devtools. Which is ~~dumb~~ Google.

@MichaelFrank ^

Hm. Could people with a linux machine handy run this and tell me what it outputs? And also the distro and version?

cat /proc/sys/net/core/wmem_max /proc/sys/net/core/rmem_max /proc/sys/net/ipv4/tcp_wmem /proc/sys/net/ipv4/tcp_rmem

It just reports TCP send/receive window sizes

It probably outputs cats.

I'm trying to get a comparison across distros, if possible

And different installs of the same distro

Journeyman Geek

Upgrading the stream to windows 10 creator update broke the touchpad driver

and I'm having trouble downloading it

12:33 AM

So, basically, I'm trying to do network tuning on Linux because the defaults are dumb.

I wanted to get a bit more info... especially if anyone has Ubuntu, CentOS, OpenSuSE handy...

Journeyman Geek

[geek@phoebe ~]$ cat /proc/sys/net/core/wmem_max /proc/sys/net/core/rmem_max /proc/sys/net/ipv4/tcp_wmem /proc/sys/net/ipv4/tcp_rmem
212992
212992
4096 16384 4194304
4096 87380 6291456

Fedora 25

Thanks. So still ~21 kB o.O

Which means if a program doesn't override the max, you would only get ... around 2.1 MB/s max on a 10ms link.

Journeyman Geek

geek@journeymanweb:~$ cat /proc/sys/net/core/wmem_max /proc/sys/net/core/rmem_max /proc/sys/net/ipv4/tcp_wmem /proc/sys/net/ipv4/tcp_rmem
212992
212992
4096 16384 4194304
4096 87380 6291456

Ubuntu 16.10

Or 210 kB/s max on a 100ms link

@JourneymanGeek So, looks like most Linux distros are still similar :S

Used to be lower, apparently: redhat.com/archives/fedora-devel-list/2008-February/…

But SuSE 10 was much better

waiiit. no. that's 210 kB

I can't math

21 MB/s max on 10ms isn't so bad

howdy is there keydown keyup keypress events in ncurses terminal similar to jquery

Journeyman Geek

12:54 AM

ah! I need serial IO to be reinstalled for the touchpad to work

1:11 AM

@Dog m.slashdot.org/story/321839

That Brazilian Guy

> 212992
212992
4096 16384 4194304
4096 87380 6291456

CentOS 7

@Bob What's a 10 milisecond link and how do I find out if a program is overriding the defaults?

Do wget and / or curl override the defaults?

I have at least 100 MB/s down at this server.

@Bob couple that with inane defaults for "interrupt moderation" for Intel NICs (especially on Windows) "to save CPU and reduce power usage" and we're getting to a scenario where tuning your networking stack is once again part of every physical OS install :/ after years of the defaults being pretty good for most people.

@allquixotic was 2.1 MB/s over 100ms, I mathed wrong

@ThatBrazilianGuy thanks

That Brazilian Guy

No, wait, I have 100 Mb / s. Or, more accurately, 21,5MB/s - 84s to download 1.3 GB.
Turns out @Bob is correct? If I manipulated it, would it increase?

@ThatBrazilianGuy 10ms RTT (ping)

@allquixotic Looks like the max isn't too bad, but the defaults are terrible... bleh. Though apparently Windows actually uses sane max/default for window sizes.

That Brazilian Guy

1:17 AM

36 mins ago, by Bob

21 MB/s max on 10ms isn't so bad

@Bob Windows might have good window sizes, but the interrupt moderation destroys gaming if you're using it as a game server

That Brazilian Guy

I won't manipulate TCP values on this server, however. It's a production server.

have to disable that on the NIC

@ThatBrazilianGuy 21.5 MB/s is almost double what 100 Mbit/s is capable of

For low-latency links (10ms) the default max is fine

They just fall over at higher latencies

The default default is terrible but programs can request higher

That Brazilian Guy

Eh, maybe they have gigabit internet at work but the OS defaults cap it?

1:22 AM

Default max is actually a max I think

@allquixotic Wasn't that part of TCP offloading too?

Works well for high throughput but not so much for low latency

That Brazilian Guy

user image

2

One of those is not like the others...

Well lookee here. My terribad ~30-50kB/s rsync is now 150-200kB/s

@ThatBrazilianGuy Ha. You and @allquixotic actually took a good crop.

I was lazy.

lol

Meow, meow. I'm a cow.

That Brazilian Guy

~~I don't even know what it is or where it comes from~~ Obviously, it is a cloud. And comes from the skies.

1:24 AM

I don't follow fads.

2

Journeyman Geek

lol

You guys wouldn't recognise me if I had anything but a dog as an ava ;p

Heh.

I've already got my next gravatar lined up :)

That Brazilian Guy

@JourneymanGeek Who's Ava? Ash's girlfriend? ;P

Journeyman Geek

actually I have no idea what I'll do in 5-6 years when ash passes on

Oh look. 600kB/s

Journeyman Geek

1:25 AM

@ThatBrazilianGuy avatar ;p

WHY DIDN'T I DO THIS EARLIER

@JourneymanGeek :(

Journeyman Geek

@Bob he's 12. 17-18 years is a damned good run for a dog

@JourneymanGeek you could photoshop "Dog" into the body of the singing sheep and have the slogan "Jog, jog. I'm a dog."

Journeyman Geek

naw

(also, He's got pretty big booties for any future dog to fill)

bah, back down to 120 kB/s. still much better than before, but the network link still sucks for a server

Journeyman Geek

1:31 AM

hmm

Should I bother upgrading the 'spare' windows install on my linux box to creator's update as well?

That's still prerelease software, right? I would be inclined to leave at least one Official Stable Build around in case something goes horribly wrong

Journeyman Geek

lol

Admittedly I haven't been keeping up with new Windows development though

Journeyman Geek

I've actually upgraded most of the systems in use

this literally is an install that came with the hardware that I left alone for no real reason

Its probably still on the original release of 10

@BenN it's RTM now

Journeyman Geek

1:34 AM

but I'm unlikely to use that install... ever

well, it's been RTM for 2-3 weeks

Oh. Carry on then

it's actually out (GA?) as of 12 hours ago

Journeyman Geek

yup

but I don't trust online updates so I'm just doing it myself

Personally I prefer to wait a month or two after GA before doing big updates

Journeyman Geek

1:35 AM

shrug

Its backed up home systems

at worst I roll back

theverge.com/circuitbreaker/2017/4/11/15257480/… this seems sweet

Impressive!

1:51 AM

-1

A: Hot do I fix Windows 10 Creators Update desktop icon positioning

Same here, no way outta trying to deal with it

@Dog Speaking of whirlpool being surprisingly techy... o.O forums.whirlpool.net.au/archive/1928171

I had when you try to connect to a network printer, and windows refuses to find it, then after words you realize that it's not even connected to your wireless network :-$

2:17 AM

20 hours ago, by bwDraco

I intend to name my systems after theological demons.

...speaking of which, the full vision for Astaroth has been updated a bit:

pcpartpicker.com/user/FieryDragonLord/saved/pRCqsY

PCPartPicker part list: https://pcpartpicker.com/list/WyJBJV
Price breakdown by merchant: https://pcpartpicker.com/list/WyJBJV/by_merchant/

CPU: AMD RYZEN 7 1800X 3.6GHz 8-Core Processor ($499.99 @ Newegg)
CPU Cooler: Corsair H100i v2 70.7 CFM Liquid CPU Cooler ($119.99 @ Newegg)
Motherboard: Asus CROSSHAIR VI HERO ATX AM4 Motherboard ($258.98 @ Newegg)
Memory: G.Skill Ripjaws V Series 32GB (2 x 16GB) DDR4-3333 Memory ($329.99 @ Newegg)
Storage: Samsung 960 PRO 512GB M.2-2280 Solid State Drive ($329.99 @ Newegg)

A pared-down version would look like this:

pcpartpicker.com/user/FieryDragonLord/saved/xLdf7P

@Ramhound Stupid Windows. It should keep a list of all the printers its ever seen so you don't have to be bothered with turning the printer on again just to install it. Something like WINS for printers. Windows Image-producing-device Name Store. yah.

PCPartPicker part list: https://pcpartpicker.com/list/yJYfjc
Price breakdown by merchant: https://pcpartpicker.com/list/yJYfjc/by_merchant/

CPU: AMD Ryzen 5 1600X 3.6GHz 6-Core Processor ($271.11 @ B&H)
CPU Cooler: Corsair H100i v2 70.7 CFM Liquid CPU Cooler ($119.99 @ Newegg)
Motherboard: Asus CROSSHAIR VI HERO ATX AM4 Motherboard ($258.98 @ Newegg)
Memory: G.Skill Ripjaws V Series 32GB (2 x 16GB) DDR4-3333 Memory ($329.99 @ Newegg)
Storage: Samsung 960 PRO 512GB M.2-2280 Solid State Drive ($329.99 @ Newegg)

I am absolutely not skimping on the PSU.

Apr 7 at 15:11, by bwDraco

> Before testing these three units, we would not believe that such performance would be possible with a consumer-grade PC PSU.

2:39 AM

why doesn't microsoft/windows embrace open source technologies more? Instead of creating powershell couldn't they embrace bash?

Why doesn't Linux embrace CMD or Powershell instead?

hmm because they aren't open source?

to be fair bash has no arrays which messes up everything

MS are also very open source...

opensource.microsoft.com

although that is cool you know there is a problem when C# and powershell and there 2 most popular open source languages

mono I guess runs c# but I have heard not well

Why? Those are Microsoft products, of course they are the biggest.

Not every platform needs to run every piece of software.

2:48 AM

I just want a open source shell with arrays. So I can run it on linux/mac

I mean shell like syntax and everyting

3:03 AM

"shell like syntax" is ... meaningless

if you're bash-biased, then it's more "bash-like syntax"

there's no such thing as a global "shell-like syntax"

@Bob true but it has to work a specific way to be truly a shell

@William Why doesn't bash open itself up to inclusion by more products?

It's GPL-licensed. That's more copyleft than truly open.

I do not know the difference between different licenses. I think I typically use MIT to make my stuff as open as possible.

@William Not at all. Python is a shell by some definitions. In fact, most REPLs can be used as a shell.

@Bob how do I open vi/vim in python?

3:06 AM

@William GPL => if you even think about including this, you must licence all your code under GPL (or compatible) too.

if you can't its not a shell replacement imo

GPL is not ideal true.

@William It's ideal if a viral licence is your intention.

But it does mean instead of asking "why doesn't Microsoft include it", you could be asking "why doesn't GNU allow it to be included"

GNU is stupid then

The answer, depending on your perspective, can be "Microsoft should open-source Windows" or "GPL is too restrictive".

Even if bash was MIT or something better I doubt Microsoft would adopt it.

3:12 AM

@William Maybe, maybe not. Well, not at this point, but 15 years ago? Maybe. It doesn't mesh too well with non-nixy OSes.

By now, it doesn't matter how open bash becomes - that ship has sailed.

@William subprocess.call, probably

Infact, wouldn't Powershell for Linux be the best chance at a unified shell at the moment?

probably the apis would be a problem though

@MichaelFrank Ironically? Yes, that's quite possible by now. Also, it's MIT-licensed :P

@William How so?

@William fyi, subprocess.call('vim') works fine

@William Then perhaps your question should be "why doesn't bash support arrays", to which the answer is "yes it does"

@Bob sorry should have been more clear multidimensional arrays unix.stackexchange.com/questions/236788/…

@Bob what is the equivalent for subprocess.call('vim') for node.js?

if you know

the question I linked talks about variable types but the real issue is multidimensional arrays

Journeyman Geek

@William by that token you can open a shell from vi/vim, then open vi/vim in that. In theory

3

Q: Opening vi from Python

I want to replicate the functionality that happens when you do something like 'git commit'. It opens up your editor and you type some stuff and then save/exit to hand off that file back to the script that launched the editor. How would I implement this functionality in Python? EDIT: Thanks fo...

3:22 AM

@JourneymanGeek most those are overkill, this works fine

Journeyman Geek

lol

speaking of Powershell on linux wouldn't they have to change all the built in commands

like ls, cp, mv, all would have different syntaxes then hardly a solution

@William nodejs doesn't really have a good REPL in the first place

I prefer nodejs to python for various reasons

the callback hell is easy for beginners like me

@William ...that's not how powershell works

firstly, .NET via mono is largely feature-complete, minus some very few Windows-specific things that can't be translated (e.g. active directory stuff)

3:25 AM

@William those are all valid aliases in Powershell currently...

exactly so do you make them aliases in the linux version also then?

secondly, powershell provides most of those basic functions natively

it'll provide the exact same Move-Item regardless of which OS you're on

it'll also alias mv to Move-Item as it already does

you can always remove the alias and use the coreutils binary if you prefer, but then of course you lose portability.

Another issue is NTFS vs EXT4 and that stuff

How is that an issue?

permissions

3:28 AM

If your shell scripts care about what filesystem it runs on, your shell script is broken

@William How so?

It seems like you're just throwing out vague complaints.

Do you even know what you want?

basically you will run into the same issues that you run into cygwin

Cygwin(doesn't support file descriptors) How do you fix stuff like this?

assuming the goal is to have similar c programs running across the Operating Systems

A shell is useless without aliases/programs right? yeah lol

Journeyman Geek

lol

@William That's... not even remotely the goal.

portability of scripts seems like a good goal

You're worrying over implementation details when the entire point of a common interface is to abstract these details away.

Why would file descriptors matter?

They shouldn't. And don't.

Because you can deal with handles in a PS-native way.

3:33 AM

... stackoverflow.com/questions/7082001/file-descriptors

A 'file descriptor' is an implementation detail.

you are probably right I just love the web/html/js/css and get annoyed with things don't work as easily and as well

@William And when you write something in JS - say, to get a file upload - do you care about permissions then? Do you care which file descriptor it's opened under?

Same idea.

It's the same reason someone can write a program in python - assuming no custom calls to native libs - and expect it to be portable.

I don't particular like python

Heck, if you implement your own abstraction layers, it's enough that the core script is portable, leaving the low-level stuff to be hidden behind custom classes.

@William ???

I used python as an example.

It would be literally the exact same sentence if you s/python/yourfavouritelanguage/

3:37 AM

again you are probably right

Bob what is your favorite software then?

Eh. C# is still great, modern JS isn't too bad...

Then again it'll be years before ES6/7 is safe to use in production.

Journeyman Geek

3:54 AM

all software sucks ;p

you are a genius thank for the subprocess.call program. The following works in node.js

require('child_process').spawnSync('vi', ['file.txt'], { stdio: 'inherit' })

3 hours later…

6:40 AM

yaaaaaaaaaaaaawn

was late to work, yey traffic

user226528

6:53 AM

I hate printers.

worst tech ever, right?

they've not improved in like 30 years

Sure, there's been changes, which have meant the costs stayed up

but they are less reliable

more expensive

user226528

Our HP printers need a lot of white margin and we need to print something edge-to-edge.

7:12 AM

yey bleed settings

you'll generally need a special printer for that

7:27 AM

@djsmiley2k I was late, my brother told me he would pick me up, and he forgot.

user226528

I can't seem to find what you called "special" printer on the web. Maybe I am searching wrongly.

morning

@FleetCommand thoughtco.com/full-bleed-printing-from-desktop-printer-1077570

also to print edge to edge, if your printer supports it, just set a larger size of paper than what you actually use.

user226528

7:50 AM

@satibel I see. It suggests three HP models, two of which are photo printers. (Out of question. Managing their ink alone is a whole new class of torture by itself.) As for HP CP2025X, it seems HP isn't sell it anymore. I have to buy second hand.

do you need to print that edge to edge stuff always or is it just once?

if it's just once, you'll probably be better off using a printing service.

user226528

I think I am going to go with designing them more compact. We have good quality Black & White LaserJet printers right now.

user226528

It is just a shame they don't print well.

user226528

A printing service means sending confidential forms to a third party. That's a big No-No.

23

Q: Can drinking "harmonized" water prevent sunburn?

Osmosis Skin Care offers what they call "Harmonized H20" This product is a UV Neutralizer-Tan Enhancing: Boost your body’s defenses with this innovative new technology utilizing frequencies that work against the damaging effects of the sun. Specifically, they claim that drinking this water at r...

alternative-medicine natural-remedies homeopathy

wat

8:03 AM

wat wat

BobTheAverage, South Carolina, United States

210 9

abortion anthropology gender human-reproduction planned-parenthood united-states

any relation @Bob?

user226528

@Burgi There are millions of Bobs in this world, so... yeah, it is definitely him!

user226528

8:22 AM

Oh, God some people need to learn more about computers! LOL Read the comments here: superuser.com/a/1198898/477799

@FleetCommand It's probably someone who has never used a command line :)

user226528

@DavidPostill And yet this person wants to install WinDbg! Is that funny or lamentable, or both?

@FleetCommand Both. We can expect a heap of questions about how to use WinDbg :/

afk for 3 hours

8:38 AM

> Issue the following command: winsdksetup /layout
> prompt:> /layout winsdksetup

how?

@JourneymanGeek used your favourite puget thermal paste link in an answer :P

@FleetCommand loll

Journeyman Geek

9:08 AM

@Bob lol. I saw.

9:24 AM

has anyone used invisible recaptcha yet?

Is that the new google one?

yes

@FleetCommand welcome to the world of programmers who've never set up a system themselves.

turns out it is just a tweaked algorithm to the existing recaptcha

the 'click the box saying your not a robot' one?

9:32 AM

yes

you are now less likely to get presented with crazy images

woo

9:48 AM

You realise this is the Google AI at work?

It's gone.... how best can we create robots that replicate humans? Ah yes, we make tests that robots fail, and humans don't

Skynet

therefore robots will become more human like.... and we can enslave them too

the Google AI wants to enslave everyone, including other robots!

Meanwhile Musk has realised that all robots will be solar powered eventually, so he's planning his under city fortress.

(infact the whole digging thing is about mars, but meh, it's funny to say it isn't)

10:00 AM

Dem vitamans

> After launching a preliminary test in October, Google has officially rolled out an automatic fact check tag program on its search pages.

Dem Google AIs

dat AI.

!! Doge ai,ai,AI

we are a bit light on users today

we having that exact discussion at work right now

there's no one here :/

it's terrribad

annoying when just 2 days ago they are telling us how much the desk has grown etc

Im like.... there's 3 first liners in, sort it out -_-

user226528

10:26 AM

Scary story of the day: Microsoft Fixes 45 Security Flaws, Some Allowing Hackers to Hijack Your PC

that's pretty much the same story every tuesday.

10:44 AM

@FleetCommand Also the last ever patch for Vista:

> it is the last time that updates will be available for Vista. Hopefully everyone has migrated from Vista but if you have not then now is the time.

user226528

@DavidPostill That's not scary.

yah it is

then again the idea of even using vista is scary

@djsmiley2k Erm, today is Wednesday

but the patches were deployed on tuesday

Patch Tuesday DAMNIT.

There's a reason thursdays mean my PC gets slooooooooooow (ops release the patches)

10:55 AM

i'd be more worried if there was only 1 patch in the update

win 7 rollup

:D

@Dog you back on chrome yet?

11:06 AM

hey hey

hi @zoltar

theregister.co.uk/2017/04/11/british_airways_website_down

lols

@djsmiley2k i think @Dog mentioned that yesterday

i thought i'd heard about it being down

8.5 hours...

to go? it was down for? wut?

11:21 AM

thats be at least £100m in lost revenue for the period

user226528

Those websites are up again.

yah

funny eh

it's like at old jo

user226528

Meesa thinks they've never been actually down.

they wouldn't pay for someone to come and document the warehouse system

jag landrover deffo not happy

it went down

8 hours lost

we laughing because we had no info on it either

user226528

Huh. Lovely.

11:26 AM

didn't domino's had the same problem?

at least I think is was that they didn't have any toppings on their pizzas

o_+OP

Is that from the time when people were seen in domino's uniforms emptying sainsburys of any pizzas?

user226528

Ew

user226528

At least their slogan is "Oh, yes, we did".

Well GAME sent me out to buy all the Wii's from Sainsburys once

Journeyman Geek

11:42 AM

Oo

@djsmiley2k that is quite funny

were they cheaper in sainsburys?

The Wolf Starring Christian Slater | HP Studios

@Burgi yup

Sainsburys had some kind of fire sale, where they were like £155 or something, when the RRP was £180

I remember me and my collegue got like 4

telling them we were fitting out student flats.

Answered 2 unanswered questions \o/

150k to go :D

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Transcript for

Apr '1712

Root Access

For all you Super Users out there. You have backups, right?

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