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btbuilder

452 karma · joined February 3, 2012

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btbuilder··on Dutch forensic lab says it has decoded Tesla's driving data
In my experience fuel injection is much more reliable than carburetors. Fuel injection requires zero adjustment. Many mid-90s cars have electronic fuel injection and ABS controllers and that’s it.
btbuilder··on [dead]
Unless otherwise shown I would think this is about remotely activating horn and turn signals
btbuilder··on FB messenger silently censoring links, claims they were sent
When faced with software/malware that was appending links to user's instant messages back in 2005, back-end code to silently drop the user's messages was put in place. This was a messaging service that had ~200 million users.
btbuilder··on Loom: Project Loom Early-Access Builds
If you only have one thread per core it is possible there will be no runnable threads while there is still work in the queue. Other threads could be waiting for IO or already running.
btbuilder··on Loom: Project Loom Early-Access Builds
If you are not using async IO and have a thread per core, if (as is quite common) your program needs to make IO calls (network being likely worst case) then the thread will sleep on a blocking IO call and CPU will be idle even if there’s work in a queue.
btbuilder··on “We're Shutting Down Our 3G Network”
The success of standardization predates LTE by a lot if you look beyond the US which had competing technologies until LTE. GSM networks (2G) allowed roaming and switching between phones by swapping SIMs in all of Europe in the mid nineties, and most of the rest of the world a few years later. Just the US use of a unique 1900Mhz band kept roaming mostly unavailable.
btbuilder··on Grafana 8.0
Developers often are the ones who need to inform the lawyers of a change in license in the scenario that minimizes wasted effort.
btbuilder··on An early look at Postgres 14: Performance and monitoring Improvements
Yes, we have multiple RDS instances and wish to reduce costs.
btbuilder··on An early look at Postgres 14: Performance and monitoring Improvements
Sure, SQL Server supports a maximum of 32767 connections each of which use around 128kB. Meaning that if you use the max connections you’ll need 4GB for the connection overhead.

We see no noticeable drop in performance with increased idle connection with our workload.

btbuilder··on An early look at Postgres 14: Performance and monitoring Improvements
I agree - the disparity between the cost of idle connections in Postgres vs MSSQL is hampering our ability to migrate.
btbuilder··on Rust heads into the kernel?
out of memory conditions should not cause a kernel panic.
btbuilder··on The full story of the RSA hack can finally be told
I would think it would be better to have a provisioning design that did not require that the company retain the seed data for every fob they had sold.
btbuilder··on Comparing Tesla, Ford and VW’s Electrical Architectures [video]
True for the drivetrain but a car these days is a lot more than the drivetrain. Those dozens of other ECUs mentioned are using the same diagnostic error codes and protocols as ICE models. Everything from intermittent overheating of electric windows to AC performance issues.
btbuilder··on Comparing Tesla, Ford and VW’s Electrical Architectures [video]
I think the benefit of a standardized diagnostic connector (and the protocols that come with it) are well worth a few more grams.

Off-the-shelf data logging and diagnostic software is useful.

btbuilder··on Zanzibar: Google’s Consistent, Global Authorization System (2019)
I’m curious about what their approach is to handle consistency with object creation and deletion in the client service. ie how do clients guarantee that the relevant ACLs are created and destroyed in Zanzibar when clients create and destroy their objects.

Destroy can be done asynchronously with durable messaging but asynchronous creation of ACLs is annoying from an api consumer perspective.

btbuilder··on Volkswagen launches its first all-electric SUV, the ID.4
The price is high compared with ICE but for what you get as an EV it is well priced. Significantly cheaper than model Y [1] now that model Y standard range has been discontinued, especially as VW still gets the $7500 fed subsidy. You are looking at $14k more for the Tesla. You will get much more acceleration, all wheel drive and 70 miles range for that $14k if you want to spend it.

The model 3 is cheaper but not the same class of vehicle.

[1] https://electrek.co/2021/04/22/tesla-increases-model-3-y-pri...

btbuilder··on Exodus: Easily migrate your JVM code from Maven to Bazel
Gradle’s remote build cache which caches at the task level is nice and granular. Also we’ve never had a problem with a change requiring a rebuild not being detected.

One thing that Bazel has that I wish gradle did was remote compilation and remote test execution rather than just remote caching of artifacts.

btbuilder··on Exfiltrate Files Using the DNS
I saw a presentation at Schmoocon around 2005 where streaming video over DNS was demonstrated.
btbuilder··on Facebook is pushing back on Apple’s new iPhone privacy rules
could you provide some examples beyond the “walled garden” of the iOS platform?
btbuilder··on Why we are still using PBKDF2-SHA256 despite being aware of its limitations
Barclays PinSentry uses CAP:

https://en.wikipedia.org/wiki/Chip_Authentication_Program

btbuilder··on AstraZeneca/EU contract
I have read a number of comments where folks state that AZ is accused of shipping doses out of EU to other markets (I assume the U.K.). However, I don’t believe any evidence of this has been presented and it is a suspicion of officials in Brussels.

WSJ reports:

“ As­tra­Zeneca says it hasn’t sent vac­cines or raw ma­te­ri­als meant for the EU mar­ket else­where. The com­pany has used a Ger­man plant to pack bulk vac­cine made in the U.K. into vials and ship it back to the U.K., peo­ple fa­mil­iar with the arrange­ment said. That “fill and fin­ish­ing” step isn’t the source of bot­tle­necks, they said.”

https://www.wsj.com/articles/behind-astrazenecas-covid-19-va...

I am interested in any other sources for this.

btbuilder··on AstraZeneca/EU contract
or perhaps they are jointly shocked to see the EU behave in this way and are providing opinion on this one issue rather than sticking to a predetermined side?
btbuilder··on “Odd Radio Circles” have astronomers excited
From the article:

“ We still have no idea how big or far away they are. They could be objects in our galaxy, perhaps a few light-years across, or they could be far away in the universe and maybe millions of light years across.”

btbuilder··on How a British Covid-19 vaccine went from pole position to troubled start
Are you sure Oxford and AstraZeneca did not test for asymptomatic participants? My understanding is they tested a proportion weekly.

Edit: Nature mentions they did: https://www.nature.com/articles/d41586-020-03504-w

btbuilder··on Apple removes Fortnite from App Store after Epic attempts to bypass fees
Apple has something like ~40% of US market share of smart phones. Therefore it is not a monopoly even if within that market share they have complete control with app store.
btbuilder··on Was Acorn's RISC OS an under-appreciated pearl of OS design?
I almost used the term WIMP but I thought it was too obscure a reference at this point :)

I still have "BASIC WIMP programming on the Acorn" by Alan Senior on my bookshelf for no good reason. I can't even find any cover photos online for it.

btbuilder··on Was Acorn's RISC OS an under-appreciated pearl of OS design?
One nice thing about RiscOS on Archimedes was that you could write fully-fledged GUI applications using just the BASIC version built into ROM. This made it very accessible vs the need to buy development tools on Windows.
btbuilder··on Skylon’s SABRE Engine Passes a Big Test
Pretty sure KSP RAPIER is a fictional copy of the described SABRE engine.
btbuilder··on Tesla Model 3 represented over 15% of September new car sales in The Netherlands
Chevy Bolt has very workable range. ~230 EPA
btbuilder··on Checkm8 – Bootrom exploit for many iOS devices
I see. Hence evil maid attack. If someone has temporary physical access they could install malware that captures data when the device is unlocked. Chargers as an attack vector seem more likely, if more mundane.
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