CIRCLE WITH A DOT

We can also see the bad network performance in the CPU usage charts, showing up as increased dom0 iowait time due to CephFS operations lagging

Does anyone make a LOTO for DC barrel jacks? Found my echo dot while cleaning up the lab earlier and I feel like I really should have a lockout on the power source

@dch The overall flow is that incoming traffic to my site hits the core router / firewall which blocks requests to unrecognized ports or from blocklisted IPs etc.Then anything headed to port 443 or 80 goes to the VM server where a single nginx instance does HTTPS termination as well as serving some static web endpoints like my blog. Non-HTTPS traffic is 301 redirected to HTTPS.A bunch of other endpoints like the CI dashboard and API are reverse-proxied (currently with no TLS but I will eventually be using internal enterprise-CA certificates here just to be extra safe) to other VMs on the same physical host, like the one the dashboard is hosted by as well as the one the webhook API endpoint lives on.Since the main TLS termination host needs to accept connections from anywhere on the internet, I would need IP filtering in that nginx instance to drop stuff going to the API endpoint from non-GitHub IPs. While doable, the hash is fast enough I don't think it is going to really protect me from much. The whole point of the HMAC itself is that anyone without the preshared key can't spoof requests.

@s0 yay large memory systems lol.I could probably offer someone 256GB without too much work and 384 if it was important enough I was willing to temporarily pause some of my other stuff.But it's super nice to have lots of space on a VM server so you can just be your own cloud big iron for your own or friends/family needs when something like that comes up

The deep memory and fast refresh rate of the ThunderScope is a godsend for stuff like this, I can see fast transients over a long time and trigger basically as fast as the data can come in.Top is the source of the MOSFET. The supply is configured for a 50ms soft start and has a somewhat linear ramp (probably distorted a bit by supply wire inductance) from 0 to 19V as expected.Bottom is the drain. Flatlined.I was expecting to see it rise a little bit, then the overcurrent protection kick in (whether false positive or true doesn't matter, there should be *some* increase) after some delay.It's not even trying to go up. So the FET isn't turning on at all./

Can't link to full 800mpix res because siliconprawn is being derpy, but this is clear enough to see all of the traces so good enough for now.Substrate of a VSC8512 seen from the underside, after sanding off solder mask. The silver marks are solder residue showing where the BGA balls had been.This image is mirrored to match the datasheet orientation, as if you were looking at the substrate from the top of the package. Ball A1 is at the northwest corner.

@azonenberg there should be no matrix math in image rotation. The fast way to do it is two orthogonal shear transforms

When I was little I decided that Pizza Hut was actually Pizza *Hunt*.Instead of ordering food like a normal restaurant when it was your turn you'd go out in the back where there would be a bunch of live pizzas rolling around an enclosure on their crusts like tires. The waiter would hand you a bow and arrow, you'd pick the pizza you wanted to eat, shoot it, then they'd cook it up for you.

Continuing upgrades to the new ngscopeclient CI platform.In addition to the existing release test builds, we now also do a debug build with asan/ubsan and run tests with sanitizers.This one caught a couple of memory leaks in test harnesses that I need to troubleshoot (the leak appears to be in the harness, not the scopehal blocks bein tested).We still need a ton more tests to be written, of course. But that's orthogonal to the work on the test harness and infrastructure

Related: rack shelves with vent slots are great for putting devkits and protos on, you can use the slots to screw into the bottom of a standoff and keep the board firmly in place without any custom designed brackets or pems or anything. You don't have to do all four corners, two is usually plenty to keep it from wobbling

I was hoping I'd be sub $700 for April but didn't quite generate enough juice to do it. May started out strong with four days of >60 kWh solar generation (which counted as part of the April billing cycle) before some clouds rolled in, so we'll see... May around here tends to be the transition between the monsoon season and cloudless summer weather.Hoping to hit below 3 MWh imported in May, so let's see how that goes.Here's some graphs from my analysis spreadsheet showing my demand vs utility rates over the last few years.

@jenesuispersonne No, I just switched from the legacy CPU (either a simple for loop or AVX depending on if your CPU supports it) conversion function to the modern shader based one... not because it's the bottleneck with slow Siglent scopes but because I'm trying to remove the deprecated version and not have to maintain a dozen different versions of the logic.It should either blow up immediately or work flawlessly, I do not expect much if any in-between

@azonenberg For bridging a similar gap, I got one of those optical Thunderbolt/USB4 cables (15 metres!) and put a Thunderbolt hub on the other end. That comes with a XHCI controller for the classic USB devices, so it doesn’t matter that the optical cable lacks the legacy data pair.Probably not the cheapest solution, and requires a USB4/TB capable host.

@whitequark like if anybody is going to create this kind of work environment at an IRL company it would absolutely be the kink community

@funkylab @CliffsEsport The layer 2 MAC is identical.PHY? Yeah, that's totally different.

@axel_hartmann Pollen season is mostly over and I was up on the roof a week or two ago to give them all a good wipe-down with a squeegee to get everything I could off. They were quite yellow-green after the early-spring plant orgy.

Added a 16-bit version of the same conversion block for use with >8 bit ADCs.Apple and llvmpipe showed huge improvements, slight on the AMD, almost no change on nvidia.But again, the main goal is portability so "it runs at least as fast and doesn't depend on extensions" is a major win. Bolted this into the ThunderScope driver already and will try to do others soon.* R9700: 1.58 -> 1.26 ms* RTX 3070: 7.41 -> 7.36 ms* GTX 1630: 9.50 -> 9.45 ms* Apple M4: 12.88 -> 1.93 ms* Xeon 8362 (llvmpipe): 8.64 -> 5.58 ms

(side note: when I was a kid I used to pronounce his name "yuri gangrene")

@azonenberg Use a bigger hammer.

@cmb if you put it on the back side of course it mirrors it (as seen from the front). that's how you make it properly oriented.Or is it failing to do so?