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Cake day: June 14th, 2023

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  • I don’t have a good answer for you.

    DHCPv6 is pretty well the only good way to have a prefix delegated by your ISP and have it chopped up and deployed in an automated fashion through multiple layers of an edge network. I’m also a real fan of the audit trail in the logs that results from a stateful transaction.

    Some background info if you haven’t run into it though is described by this google issue tracker id: https://issuetracker.google.com/issues/36949085. The summary is that one guy at google is obstructing DHCPv6 being implemented on android.

    I’ve built out a bunch of IPv6 networks that implement DHCPv6 on the edge. I personally use a whole lot of android devices and none of them get IPv6 addresses, pretty well everything else does. I’m mostly cool with it at this point, eventually the guy who is obstructing IPv6 at google will move on.



  • The most impressed I’ve been with hardware encoding and decoding is with the built in graphics on my little NUC.

    I’m using a NUC10i5FNH which was only barely able to transcode one vaguely decent bitrate stream in software. It looked like passing the hardware transcoding through to a VM was too messy for me so I decided to reinstall linux straight on the hardware.

    The hardware encoding and decoding performance was absolutely amazing. I must have opened up about 20 jellyfin windows that were transcoding before I gave up trying and called it good enough. I only really need about 4 maximum.

    The graphics on the 10th generation NUC’s is the same sort of thing that is on the 9th gen and 10th gen desktop cpu’s, so if you have and intel cpu with onboard graphics give it a try.

    It’s way less trouble than the last time I built a similar setup with NVidia. I haven’t tried a Radeon card yet, but the jellyfin docs are a bit more negative about AMD.




  • There’s no way of knowing what happened there.

    But back in the mid to late 2000’s we had a whole bunch of residential internet customers and every so often one would blow their traffic cap by a bunch and would ring up and say “Your billing system is wrong!”.

    Then whoever could be bothered in the office would do some modest analysis on their netflow data and come up with something like "18% of your traffic this month was redtube.com, 33% was pornhub.com and 9% was xhamster.com.

    We never knew if whoever was on the phone was the raging porn addict or it was one of their associates. Either way they would say “Oh well, I guess we will never know then. Thanks for your help. Bye.”. Followed by them quietly paying the bill.



  • I just read the update to the post saying that the issue has been narrowed down to the NTFS driver. I haven’t used NTFS on linux since the NTFS fuse driver was brand new and still wonky as hell something like 15 years ago, so I don’t know much about it.

    However, it sounds like the in kernel driver was still pretty fresh in 5.15, so doing as you have suggested and trying out a 6.5 kernel instead is a pretty good call.


  • If you haven’t already, try running hdparm on your drive to get an idea of if the drives are at least doing large raw reads straight off the disk at an appropriate performance level.

    This is output from the little NUC I’m using right now:

    # lsblk
    NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
    sda      8:0    0 465.8G  0 disk 
    ├─sda1   8:1    0   512M  0 part /boot/efi
    ├─sda2   8:2    0 464.3G  0 part /
    └─sda3   8:3    0   976M  0 part [SWAP]
    
    # hdparm -i /dev/sda
    
    /dev/sda:
    
     Model=Samsung SSD 860 EVO 500GB, FwRev=RVT02B6Q, SerialNo=S3YANB0KB24583B
    ...
    
    # hdparm -t /dev/sda
    
    /dev/sda:
     Timing buffered disk reads: 1526 MB in  3.00 seconds = 508.21 MB/sec
    
    

    If your results are really poor for this test then it points more at the drive / cable / controller / linux controller driver.

    If the results are okay, then the issue is probably something more like a logical partitioning / filesystem driver issue.

    I’m not sure what a good benchmark application for Linux that tests the filesystem layer as well is other than bonnie++ which has been around forever. Someone else might have a more current idea of something to use for this.


  • It might help for the folks here to know which brand and model of SSDs you have, what sort of sata controllers the sata ones are plugged into and what sort of cpu and motherboard the nvme one is connected to.

    What I can say is Ubuntu 22.04 doesn’t have some mystery problem with SSDs. I work in a place where we have in the order of 100 Ubuntu 22.04 installs running with SSDs, all either older intel ones or newer samsung ones. They go great.


  • 1988 Nissan Skyline GT with an RB20DET.

    It was abandoned by my uncle at our place when he moved overseas and subsequently my sister drove it around a bit. Eventually it leaked coolant from the water pump, overheated and blew a head gasket because she wasn’t paying attention.

    I was unemployed and bored and I decided to pull it apart and bought all the bits to fix it. I didn’t really know anything about mechanical stuff at the time, but I am good at logic and try not to be useless at practical stuff even though I’m really a computer geek. I drove it around for a bunch of years after that until I was earning enough money that I could buy something I wanted which was a Mitsubshi EVO 1.

    So to answer the question, favorite thing was that I rescued it from oblivion even though I didn’t know much about cars or engines at the time.




  • deadbeef@lemmy.nztoTechnology@lemmy.worldUnsmart a smart TV
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    3 months ago

    The samsung TV that I bought for my son had this annoying overlay thing that pops up when you turn it on that shows all the different inputs and nags about various things it thinks are wrong with the world. It is plugged into an Nvidia shield that we do most things on, but you can’t use the shield until the overlay calms the fuck down and disappears.

    It’d be great if you could just have the thing turn on and display an input like our older TVs do.




  • I learned what a tankie is, which is fun.

    I’ve been commenting a bit, whereas on reddit I would only post a comment a few times a year when I could be bothered dealing with the likely burst of negativity that would come as a response to it.

    Kind of feels a bit more like Web 1.9 or so from about 2003 which I think was about the sweet spot for minimal rage bait and crazy and still a decent bit of user interaction and scale.

    It would be about perfect if you could chop out a few of the folks trying to shoehorn in politics to every little thing.


  • Appreciate the reply. Which desktop environment are you using?

    My only experience with Wayland is also with KDE. Wheres for the 27-ish years before that I’ve used all sorts of stuff with X.

    I’ve scripted the machine that drives the frontend for our video surveilance ssytem to place windows exactly where I want them when it comes up.

    I use a couple of dbus triggers that make the TV on the wall in my garage go to sleep from the shell, perhaps not tested via ssh though. They were pretty well the functional equivalent of some xset dpms commands that I used to use. Not sure if that is what you were meaning. I think I also had something working that disabled the output altogether. I think that was pretty clunky as it used some sort of screen ID that would occasionally change. Sorry I’m hazy on the details, I’m old.

    I’ll try it all out when I get home, I’ve got to find some old serial crap for a coworker in the garage anyway.


  • Which workflows? Asking because I’d like to experiment with some edge case stuff.

    I’m running KDE with wayland on multiple different vintage machines with AMD and intel graphics and it would take alot for me to go back to the depressing old mess that was X.

    The biggest improvement in recent times was absolutely pulling out all my Nvidia cards and putting in second hand Radeon cards, but switching to wayland fixed all the dumb interactions between VRR ( and HDR ) capable monitors of mixed refresh rates.

    Even the little NUC that drives the three 4k TV’s for the security cameras at work is a little happier with wayland, running for weeks now with hardware decoding, rather than X crashing pretty well every few days.