Dells XPS are made of magic. [long story, major fuckup, 10k+ damages]

It all started in December. One morning I was late to work, drove there as fast as possible. (I live like 3 minutes away so me being late really meant *late*) Parked my car in a secluded car park, grabbed my backpack and ran to work. The car park is like 100 meters away from work so I took my feet into my hands and ran. Next thing I know my heels loose all grip while I go down a small slope and I drop on my back full force. On a sharp edged stone. With only my 1700$ XPS in it. Fuck.

I paniced, but got up and ran to work. I checked on the notebook, praying it would boot. It booted! Holy shit. I flipped the notebook and saw two small dents in the aluminum shell. I was thorougly impressed. I later discovered that it left a small shadow on the display, but given what a hit that was (I am not exactly a lightweight), impressive would be a massive understatement.

Fast forward to February, I am weighing my options to get the screen replaced maybe, as damage on my hardware (even if neglectable) triggers some sort of OCD and makes me feel bad 24/7. Also my laptop tends to shut off from time to time, looked into the Event Viewer and saw kernel panic. I figured that the battery probably still took a hit and that it drops voltage from time to time and the kernel assumes a critical situation, thus shutting off.

It stayed quite snowy in Austria up until March, so occasional snowing wasn't rare. Got out of work one day, saw it snowed a bit. Whatever. I had my moms car at the time, so I tried if it would slide a bit if I donut on the now (5pm) empty parking space. Nothing. Drove done a small hill, ABS triangle lit up red (board computer can't outbalance the snow). I drove out to the main street where everything was salted and drove along towards my house. Took a turn into my street, accelerated for a bit and then went off the gas so the car would smoothly drive along with the speed slowly degrading. So I went off the gas and noticed I was a bit to the right, no wonder, centrifugal forces.

*steers left*
"Huh seems like I need a bit more"
*car still doesnt move much*
"What the- go to the left!"
*steers left hard*
"Fuck that wall is coming closer"
*Breaks*
*car doesnt break*
"FUCK FUCK FUCK FUCK!!!"

Everything got quiet in seconds, me waking up to an open airbag, ripped pants, a hurting wrist, the radio somewhere on the ground and fumes that smellt like burning wires. I grabbed my backpack that was now somewhere on the floor instead of on the seat and ran outside, tears in my eyes and the phone on my ear calling my mom. I walked inside as she walked outside, hearing a weeping scream that I haven't heard from her since I am alive. While walking inside I noticed my backpack was wet on the bottom, my 2 litre water jug shattered when my backpack hit the dashboard. I tried to stay calm and act rational, knowing that every second counts when It comes to water damage. I hastely searched for some rice and a bag to put my laptop into, stuffed the bag with both and went outside. The car was totaled, my mom pissed and crying. And I was in shock, sad, angry and hurting.

I kept the laptop on my heater for a few days, bagged in rice. I dared to try a boot after a while and you wont believe me, it fucking booted. Even the keyboard backlight worked, just the screen was obviously broken in the back (no color distortion or bad pixel rows though!!) and the aluminum shell had a dent on the front. I talked with Dell Support a few days later, asking if it would be ok to open the XPS up so I could drain all of the water. She said yes thats fine, as long as I dont touch anything or screw around with it.

She said I can send it in and get it checked, but the pickup and analysis will cost 150$ and I can go from there.

I sent it in and estimated that, because battery, screen and other things probably needed changing, it will be around 900$.

Got a call a few weeks later:

"Hello beggarboy, the repair team reported back to us and said that they will have to replace everything, which will be 1700$."

"Fuck... Buying a new one is cheaper.."

"Yeah I know I am sorry about that, I can offer you a voucher so you can buy a new one for 250$ off if you would prefer that"

"Sorry but I will need some time to consider"

"I understand."

The agent clearly noticed I was bummed about it.

After going back and forth what to do I got another call a few days later.

"Hello beggarboy, we talked a few days ago. I have good news"

"Hello, yes, speak up?"

"I was able to get a special offer for you after putting in a few words..."

The next thing she said seemed unreal to me.

She was able to cut 600$ (!!!), making the new offer 1100$, instead of 1700$ or a new one for 1500$. I figured the reason she probably did that was because I am always very polite with support members. Always.

My XPS is back and healty again.
Thank you for taking the time to read this.
Dells XPS are made of magic.

Why does almost everyone act as if the world they live in is perfect, or is supposed to be perfect?

This is about approaching IT infrastructures, but goes way beyond IT, into daily lives.

Daniel Kahneman wrote about the "Econs" - a mythical creature that behaves according to rules and rational thoughts, that everybody is guided by, as opposed to Humans, who are irrational, intuitive and emotional.
My beef is with a wider perception, beyond economical analysis, profit, investment and so on.

Examples:
Organization A uses a 15 year old system that is crappy beyond description, but any recent attempt to replace it have failed. Josh thinks that this is a crappy organization, any problem lies within the replacement of that system, and all resources should be devoted to that. Josh lives in a perfect world - where shit can be replaced, where people don't have to live with crappy systems. Josh is stupid, unless he can replace that old system with something better. Don't be Josh. Adapt to the fucking reality, unless you have the power to change it.

Peter is a moron who downloads pirated software with cracks, at the office. He introduced a ransomware that encrypted the entire company NAS. Peter was fired obviously, but Sylvia, the systems administrator, got off easily because Peter the moron was the scapegoat. Sylvia truly believes that it's not her fault, that Peter happened to be a cosmic overgrown lobotomized amoeba. Sylvia is a fucking idiot, because she didn't do backups, restrict access, etc. Because she relied on all people being rational and smart, as people in her imaginary world would be.

Amit finished a project for his company, which is a nice modern website frontend. Tom, the manager says that the website doesn't work with Internet Explorer 8, and Amit is outraged that Tom would even ask this, quoting that IE8 is a dinosaur that should've been euthanized before even hatching. Amit doesn't give a shit about the fact that 20% of the revenue comes from customers that use IE8, what's more important to him is that in his perfect imaginary world everybody uses new hardware and software, and if someone doesn't - it's their fault and that's final. Amit is a fucking asshole. Don't be like Amit.

React to the REAL world, not what you WANT the world to be. Otherwise you're one of them.
The real world can be determined by looking at all the fuck ups and bad situations, admit that they happen, that they're real, that they will keep happening unless you do something that will make them impossible to happen or exist.

Acting as if these bad things don't exist, or that they won't exist because someone would or should change it, is retarded.

Had 2 days of vacation. Theoretically (plus weekend, plus 2 days) 6 days.

Worked today… At Saturday.

Some administrators forgot to properly check bandwidth limitations....

*rolls eyes*

We had a major version upgrade of some server software at Monday.

Guess why I got called...

Of course it MUST be the software upgrade.

It couldn't be the new hardware that was setup 2 weeks ago and on which a lot of "important" VMs were migrated.

*eyes roll inside till only white is visible*

The even more annoying thing is that it wasn't that hard to figure out.

Looking at monitoring, we had spikes on 20 Gbit/s (roughly 2.x Gigabyte/sec - Ethernet) connection of some server at roughly 1.9 plus Gigabyte/sec.

IO latency spikes that made the graph look like a heartbeat EKG with severe tachycardia...

*additionally to white eyes starts cursing in reverse latin*

Incompetent admin answer: Booboo that can only be your fault - the developers must investigate.

Me (just a tad more polite): Meep Meep mother fucker, get your shit together. If the software would eat that much, the network would be a niece chunk of charcoal. Plus the time (sending instead of links to monitoring pictures… guess the lazy fucktard who's brain is a vacuum didn't even bother to check it)...

NOTICE SOMETHING?!

Incompetent admin: It starts at the same time. Always.

After wasting roughly another hour of time discussing with him, I just hanged up the video call.

Called someone I knew from the admin department and turns out that - drumrolls please - the incompetent admin was someone who got recruited 3 months ago…

*turning into antichrist*

I then had a not so polite discussion about how the only competent people could take days off (all except incompetent admin were on vacation) and the seemingly incompetent fresh recruit - who by the way NEVER mentioned this - was the only one left of the admin department. Which would be bad alone, but no - he even got the 24/7 emergency support role for the whole weekend.

Sometimes this company and HR especially notoriously drive me insane...

Guess next week there will be some HR barbecue.

But yeah. After a lot of raging around we nailed it down to the traffic of backups and could fix it.

Roughly 4 hours of analysis, communication, raging and hatred.

Just one hour implementing shit.

*goozfraba*

Best code performance incr. I made?

Many, many years ago our scaling strategy was to throw hardware at performance problems. Hardware consisted of dedicated web server and backing SQL server box, so each site instance had two servers (and data replication processes in place)

Two servers turned into 4, 4 to 8, 8 to around 16 (don't remember exactly what we ended up with). With Window's server and SQL Server licenses getting into the hundreds of thousands of dollars, the 'powers-that-be' were becoming very concerned with our IT budget. With our IT-VP and other web mgrs being hardware-centric, they simply shrugged and told the company that's just the way it is.

Taking it upon myself, started looking into utilizing web services, caching data (Microsoft's Velocity at the time), and a service that returned product data, the bottleneck for most of the performance issues. Description, price, simple stuff. Testing the scaling with our dev environment, single web server and single backing sql server, the service was able to handle 10x the traffic with much better performance.

Since the majority of the IT mgmt were hardware centric, they blew off the results saying my tests were contrived and my solution wouldn't work in 'the real world'. Not 100% wrong, I had no idea what would happen when real traffic would hit the site.

With our other hardware guys concerned the web hardware budget was tearing into everything else, they helped convince the 'powers-that-be' to give my idea a shot.

Fast forward a couple of months (lots of web code changes), early one morning we started slowly turning on the new framework (3 load balanced web service servers, 3 web servers, one sql server). 5 minutes...no issues, 10 minutes...no issues,an hour...everything is looking great. Then (A is a network admin)...
A: "Umm...guys...hardly any of the other web servers are being hit. The new servers are handling almost 100% of the traffic."
VP: "That can't be right. Something must be wrong with the load balancers. Rollback!"
A:"No, everything is fine. Load balancer is working and the performance spikes are coming from the old servers, not the new ones. Wow!, this is awesome!"
<Web manager 'Stacey'>
Stacey: "We probably still need to rollback. We'll need to do a full analysis to why the performance improved and apply it the current hardware setup."
A: "Page load times are now under 100 milliseconds from almost 3 seconds. Lets not rollback and see what happens."
Stacey:"I don't know, customers aren't used to such fast load times. They'll think something is wrong and go to a competitor. Rollback."
VP: "Agreed. We don't why this so fast. We'll need to replicate what is going on to the current architecture. Good try guys."
<later that day>
VP: "We've received hundreds of emails complementing us on the web site performance this morning and upset that the site suddenly slowed down again. CEO got wind of these emails and instructed us to move forward with the new framework."

After full implementation, we were able to scale back to only a few web servers and a single sql server, saving an initial $300,000 and a potential future savings of over $500,000. Budget analysis considering other factors, over the next 7 years, this would save the company over a million dollars.

At the semi-annual company wide meeting, our VP made a speech.

VP: "I'd like to thank everyone for this hard fought journey to get our web site up to industry standards for the benefit of our customers and stakeholders. Most of all, I'd like to thank Stacey for all her effort in designing and implementation of the scaling solution. Great job Stacy!"
<hands her a blank white envelope, hmmm...wonder what was in it?>

A few devs who sat in front of me turn around, network guys to the right, all look at me with puzzled looks with one mouth-ing "WTF?"

Fuck you Intel.
Fucking admit that you're Hardware has a problem!

"Intel and other technology companies have been made aware of new security research describing software analysis methods that, when used for malicious purposes, have the potential to improperly gather sensitive data from computing devices that are operating as designed. Intel believes these exploits do not have the potential to corrupt, modify or delete data"

With Meltdown one process can fucking read everything that is in memory. Every password and every other sensible bit. Of course you can't change sensible data directly. You have to use the sensible data you gathered... Big fucking difference you dumb shits.

Meltown occurs because of hardware implemented speculative execution.
The solution is to fucking separate kernel- and user-adress space.
And you're saying that your hardware works how it should.
Shame on you.

I'm not saying that I don't tolerate mistakes like this. Shit happens.
But not having the balls to admit that it is because of the hardware makes me fucking angry.

If you're working on close to hardware things, make sure you run static analysis, and manually inspect the output of your compiler if you feel something's off - it may be doing something totally different from what you expect, because of optimization and what not. Also, optimizations don't always trigger as expected. Also, sometimes abstractions can cost a fair amount too (C++ std::string c/dtor, for example, dtors in general), more than you'd expect, and in those cases you might want to re-examine your need for them.

Having said all that, also know how to get the compiler to work for you, hand-optimization at the assembly level isn't usually ideal. I've often been surprised by just how well compilers figure out ways to speed up / compactify code, especially when given hints, and it's way better than having a blob of assembly that's totally unmaintainable.

Learnt this from programming MCUs and stuff for hobby/college team/venture, and from messing around with the Haskell compiler and LLVM optimization passes.

Sales guys in my company are unbelievable. They told client that my analysis algorithm runs for about one hour, so that is the time they have to wait for results. I asked if he actually asked what hardware do they have, and if they want all analysis done (its a complex algo) paralell, or just one by one.
Ofcoursenot.
Then I suggested to better ask these things, otherwise we end up reckt. Annnnd he said they will question our professionalism if we ask too much questions.
Ok so let me summarize. My algo needs to run maximum 1 hour long, regardless the actual functionality and input data, on any fcking hw you can imagine, or else i am not a pro. Mmmkay.