CAN I BE OF ASSISTANCE?
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Tuesday, April 06

Geek

Daily News Stuff 6 April 2021

Recovering Dataholic Edition

Tech News


Facebook Stans Sailor V Video of the Day



If you use Sailor Moon's trademark phrase In the name of the Moon, I will punish you - or any variation thereof - you will get banned.  No appeal.

Note that my hosting provider is posting updates the Facebook and not to their own site, and you can't read Facebook without an account.


Disclaimer: <chorus>Because fuck you, that's why.</chorus>

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Monday, April 05

Geek

Daily News Stuff 5 April 2021

Well Fuck Edition

Tech News


Disclaimer: And double fuck.

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Blog

Older Posts Temporarily Hidden

Power is out at the new hosting company where Ace lives - and may be out for a day or two.  After power went out, they switched to generator backup.

Then one of the backup generators caught fire.

It was promptly put out, but power has been cut to the entire building and won't be restored until there's been a safety inspection.

I had a whole bunch of his content already in this server and activated his site over here, but that slowed the server to a crawl, and I had to hide older posts while I sorted that out.

All the content is safe and will be progressively re-enabled.  Should all be back tomorrow.

Update: We also have four servers at the same datacenter at my day job.  It's the big data crunching cluster I mentioned before, including the massive 128-core Epyc server.

That server - with complete backups of all the critical data - is now back online.  So is the one that caused me so much trouble that my boss authorised a 128-core replacement without a second thought.

I was half expecting none of the servers to survive except the broken one.  At least I'm spared that nightmare.

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Geek

Daily News Stuff 4 April 2021

It's Getting Hot In Here So Turn On The Air Conditioner Edition

Tech News

  • Intel vs. AMD: Who wins?  (Tom's Hardware)

    Comparing the 11900K and the 5900X it's a pretty easy win for AMD if you can actually find one anywhere which you can't.  Of all the Ryzen 5000 range the 5900X is the hardest to get.


  • Nvidia vs. AMD: Who wins?  (Tom's Hardware)

    Comparing he 3070 and the 6700XT the 3070 performs a little better overall and significantly better in ray tracing, but you can't get one.  The 6700XT is, so far, still available.


  • GitHub is being used to mine cryptocurrency.  (The Record)

    It's not a security breach though.  You can set up automated processes to test your code, and you can get those automated tests to mine cryptocurrencies for you.  It's comically inefficient and GitHub will terminate your account, but if you have nothing else to do with your time you might earn a few bucks before they shut you down.


  • A reasonably priced 2.5GbE switch?  (Serve the Home)

    Yes.  Albeit one designed by an idiot.

    The indicator lights are on the back.


  • Personal details for half a billion Facebook users are floating around on the internet.  (Bleeping Computer)

    I mean, on Facebook too, but in this case as a single huge dataset.

    I've never given Facebook my phone number, but Twitter will lock your account and force you to cough up your phone number to unlock it again.


Disclaimer: Because fuck you that's why.

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Sunday, April 04

Geek

Daily News Stuff 3 April 2021

Curse Of Vanishing Edition

Tech News
  • Tried my hand at fishing in Minecraft.  This is great in theory because fish let you tame cats and cats scare off creepers and creepers suck, and also because you can fish up certain types of enchanted items - bows, books, and fishing rods - that are otherwise hard to get.

    Wasn't having much luck with that part, until I fished up this item:

    http://ai.mee.nu/images/FishStick.jpg?size=540x&q=95

    It has every enchantment it is possible to have on a Minecraft fishing rod and all maxed out.  I could have done without the curse, but since getting that one I have fished up a ton of other goodies.

    No books of Fortune or Silk Touch yet, but I do have Unbreaking III to apply to my diamond pickaxe.

    Update: Well, I forgot I had it with me, went to feed the animals at my ranch, got jumped by pillagers, and the fishing rod is gone.  But it lasted long enough for me to get a replacement.  I just need to be level 24 to combine two of the other fishing rods it found for me and I'll have all the same enchantments but without the curse.  Only I just got killed by pillagers so my levels got reset...


  • SK Hynix is investing $106 billion in new fabs.  (AnandTech)

    That's still a lot, but it sounds like this is over a longer period than TSMC's similarly-sized investment.


  • Rocket Lake Xeons are coming.  (WCCFTech)

    I don't know why, but they are.


  • Zen 3 has a potential security vulnerability like Spectre.  (Phoronix)

    It's a side-channel attack and there's no proof-of-concept yet, but they're taking it seriously - and there's already a flag that can be set in the CPU to disable the specific feature, called Predictive Store Forwarding, that may be vulnerable.

    AMD's suggestion is to set this flag on applications that run untrusted code (e.g. web browsers) or at the kernel level if you can't do that.  It doesn't need a microcode or BIOS update.


  • Rust leaks your username.  (Bleeping Computer)

    The absolute path used when compiling Rust programs is baked into the binary code.  This has been known for a while, but the Rust team seems to have bee struggling with the concept of don't do that then.


Disclaimer: It hurts when I do this.

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Saturday, April 03

Geek

Don't Try This At Home

Before spending a couple of grand on a whole new computer, I thought, why not try updating the drivers?  The video drivers for whatever reason aren't getting updated by Windows, so why not install them directly?

Turns out the answer is, because then your mouse will stop working.

If you have a Radeon graphics card and a multi-monitor setup and one of the monitors is off - or detected as off because it's switched to another input - your mouse will act as if it has four broken legs.  This apparently is a known issue dating back to at least 2018.

The solution is to disable HDCP.  Because of course it is.

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Geek

Daily News Stuff 2 April 2021

Role Reversal Edition

Tech News

  • Tohru (my main desktop PC) had decided that it will now shut down if I play two YouTube videos at once.  I discovered this because Reine (from HoloID) had a unscheduled collab in Minecraft with Pekora (who has a new costume - old-fashioned prison pyjamas, making her look even more like Bugs Bunny) and...

    Anyway, realised that Pekora was streaming and I could watch both viewpoints, and I did - for about two minutes.

    I need a new PC.


  • Which is a problem at the moment, particularly if I want something fancy, like any graphics card whatsoever.

    But: Intel has a partial solution for that.

    The high-end 11th gen desktop parts - the 11700K and 11900K - have been solidly panned, but the lower-end parts fare much better.  They're relatively cheap, still have six cores, and unlike the 5600X, have integrated graphics.

    The 11400 is somewhat slower than the Ryzen 5600X but only by 10% single-threaded and 20% multi-threaded, and it is roughly 50% cheaper at retail.  (Because the 5600X is selling for well above its recommended price.)

    And, as I said, it has integrated graphics so I could use the computer for work while I wait a year for my video card to arrive.




  • AMD is increasing production of Ryzen CPUs by 20%.  (WCCFTech)

    That's not enough, but they're limited by wafer allocation at TSMC, who are running at 100% across all their fabs right now.


  • Microsoft is making Xbox fridges for real.  Apparently.  (Tom's Hardware)

    Okay then.

    Where's that KFC console?


  • isEven as a service.  (isEven API)

    Given the mess that NodeJS made out of this, it almost makes sense.


  • When upper case doesn't get your point across adequately why not try uppest case?  (Tom7)

    Why not indeed?


  • Has anyone checked the Prime Minister?  (The Guardian)

    Would explain a lot.


Disclaimer: Not everything, but a lot.

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Friday, April 02

Geek

Daily News Stuff 1 April 2021

Walfielive Edition

Tech News


Yurumyth Video of the Day



For their April 1 full team collab, HoloEN did a new costume reveal - full Live2D rigged Walfie avatars.  It's a pretty high-effort prank, and they're doing individual streams with their new avatars now.


Disclaimer: Also, Amelia gave birth live on stream.

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Wednesday, March 31

Geek

Daily News Stuff 31 March 2021

Gremlin Inversion Edition

Tech News

  • Rocket Lake is here and it's crap.  (AnandTech)

    They previously got their hands on the i7-11700K and it was decidedly underwhelming, but also not the top of the line part.  Now they have the i9-11900K and...  Yeesh.

    What do you think, Steve?



    Steve's unimpressed.  What about you, Aussie Steve?



    Not ones to mince words, are Steve and Steve.

    The 8-core 11th-gen die is 25% larger than the 10-core 10th-gen die, and slower at multi-threaded and often at single-threaded tasks, while using more power.  It's not bad, not on the level of Bulldozer, but it's not better than its predecessor or its competition.

    Performance is not objectively bad, but it doesn't provide a reason not to simply buy AMD.

    In fact, given availability and pricing, the Ryzen 3900X is looking pretty good right now.  Particularly since you can upgrade later to a 5900X or 5950X, and there is no upgrade path at all for the 11900K.


  • Let's find out what mongod --repair does, shall we?


  • Arm has announced Armv9.  It has stuff.  (AnandTech)

    Notably it has support for some kind of micro-hypervisor architecture that can protect VMs running on Arm hardware even if the host node is hacked.  To an extent, anyway; if you have root access to the host you can shut it all down and maybe delete all the data; what you can't do is access the data within the VMs.  I believe that Epyc also supports this.

    They also discussed the next two generations of mobile cores, which will bring 30% total IPC improvements, presumably over the current high-end X1 core.

    The first of these cores will arrive this year, with consumer devices early in 2022.


  • Dimgrey Cavefish is on its way.  (Tom's Hardware)

    This is probably the Radeon 6600 XT.  It seems that this will have just 32MB of inifinity cache, which will make for a much smaller die - cache is about 1mm2 per MB on TSMC's 7nm node.  Not much less on 5nm either; that scales well for logic but not for memory.


  • Speaking of which, TSMC plans to ship 4nm parts this year.  (Tom's Hardware)

    Production was originally scheduled for next year, but they're ahead of schedule.  3nm is on track for late next year.

    If they don't run out of water.  They can have some of ours, frankly.  We're full.  For now, Taiwan is praying for typhoons.  Yurie, your country...  Another country needs you.


  • The Ubiquiti breach was bad.  (Krebs on Security)

    Intruders gained access to Ubiquiti's AWS account, set up their own VMs on the network, installed backdoors on the servers, and basically had full access to everything.


Hololive Minecraft Stream No Video of the Day

Not one Minecraft stream in 24 hours.  They got permission to stream Capcom games and they've run off in all directions.

Nene will be back shortly though, Kiara tomorrow, and Reine after that.



And there's at least a thousand hours of archives I haven't seen.

Oh, if you watch VTubers - on YouTube, anyway, not Twitch - Holodex is a pretty nice tool.  Despite the name it works for Nijisanji and VOMS and others I'm not familiar with.  The interface is a little awkward in spots, but it's nonetheless impressive for a fan-created project.

Update: Pekora jumps in to save the day with a unscheduled stream - she seems to be experimenting with some kind of steam-powered dimensional turtle transport system.



Update: Oh, Towa is streaming too.  Chaos ensues in 3...  2...



Yep, there we go.  Towa showed Pekora her water slide of death, but Pekora has enchanted armor and didn't die.  Then Pekora showed Towa one of the death traps - uh, attractions - in Pekoland, but Towa wriggled her way out of the trap and got stuck inside the mechanism.

I like the way all this complicated stuff in Minecraft only barely works at all.  It's great training for real life.


Disclaimer: Turtle house!

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Tuesday, March 30

Geek

Daily News Stuff 30 March 2021

Gone Fishing Edition

Tech News

  • Want an RTX 3060 but you accidentally built your computer in a shoebox?  Asus is here to help.  (Tom's Hardware)

    At 7"x5"x2" it should fit most cases, but it is two-and-a-half slots wide.


  • Mine Bitcoin on your Game Boy.  (Tom's Hardware)

    Only about 100 trillion times slower than dedicated hardware.


  • The database I repaired last night - this morning, really - has not yet failed again.  This is good.

    Update: It failed again.  Less good.  I realised that I'm initialising the replicas from live snapshots, so I'm doing it again from a snapshot after a clean shutdown.  it shouldn't break either way, but it does.

    Specifically it reports I/O errors, but there are no I/O errors being logged at the kernel or hardware level.  As in, zero, total, since the server was rebuilt after one of the SSDs failed entirely.


  • Pigz is your friend.  

    Pigz is a parallelised Gzip.  MongoDB can optionally gzip your backups, but it's one thread per table, so if 95% of your database is two large tables you'll be sitting there waiting forever while 126 of your 128 cores are basically idle.

    If you don't gzip the output directly but have ZFS configured to use gzip compression, it's automatically multi-threaded and much faster, but if you then transfer the backup across the network it transfers it uncompressed.

    Solution is to backup uncompressed - let ZFS do its thing, it's not hurting you - and then Pigz everything in the dump directory, data and scheme files alike.  It's much faster and the MongoDB import will read it all just fine.

    Someone has a script to do incremental backups in MongoDB which I should take a look at.

    I'm not sure why they don't support it directly; all the necessary infrastructure is there as long as you run the incremental backup before the oplog flushes.  You can even do overlapping incremental backups, so you can still restore if some of the incrementals are missing.

    Sure, snapshots are easier, but a snapshot of a database with a corrupted index is just going to give you heartburn when you restore it.


  • Nobody thought to specify how to write IPv4 addresses until IPv6 arrived.  (Dave.tf)

    Since IPv4 had been around for a long time by then, the specification was based on existing practices, and existing practices were based on BSD. 

    Turns out that 0177.1 is a perfectly valid IP address.  If you read yesterday's post you can likely figure out what for.


  • There are 30 malicious images on Docker Hub that contain crypto mining code alongside or instead of what they are supposed to contain.  (Bleeping Computer)

    Which doesn't automatically mean disaster; there's a ton of stuff on Docker Hub.

    But those 30 images have been downloaded an aggregate 20 million times.


The Dark Queen Rises Video of the Day


10,000 people waiting in line with twenty minutes to go.

Update: She had to postpone it by half an hour, so now it's nearly 19,000 people waiting with twenty minutes to go.


Your Shark Is the Shark That Will Pierce the Heavens Video of the Day


Gura doesn't sound at all like an Iowa farm girl here, which is what I suspect she is.


Disclaimer: I have literally no idea what she's going to do.

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