scottlamb

8 ms·

61.
by scottlamb 5mo ago
> Datacenters are focused on "never letting the equipment go down for any reason." Disagree. I'm most familiar with Google. For a long time at least their UPSs were built in to each machine and not super reliable. They bui
62.
by scottlamb 5mo ago
You're reminding me that I have a couple conventional UPSs sitting in the garage. I should unload them before convincing everyone they're junk!
63.
by scottlamb 5mo ago
I've found the difference in runtime between similarly-priced low-end units with similar power rating is hour+ (LifePO4 power station) vs not advertised but actually just minutes (lead acid UPS). And you can spend a bit more on the Lif
64.
by scottlamb 5mo ago
Where is it a good option? I'd expect datacenters to be more focused on efficiency, not less.
65.
by scottlamb 5mo ago
Had the exact same thoughts. * I thought at first they meant "later" was too vague, but omitting the word only makes the message more terse, not more specific. It's as if they decided ahead of time that the old message was ba
66.
by scottlamb 5mo ago
Yes, thousands of times, an order of magnitude improvement over lead acid. And the increased capacity means that they're much less likely to hit 0% (or whatever defined cut-off you set) during a typical outage anyway.
67.
by scottlamb 5mo ago
> 20 milliseconds is barely distinguishable from a single 60 Hz sine wave period. I've read that the newest PSUs are only guaranteed to last 12ms. Of course they may last much longer, especially if running near idle, but I'd pr
68.
by scottlamb 5mo ago
I toyed with this too, but I guess I have a slightly more diverse set of devices than you do. A few more weird voltages, and some things that expect mains. I looked into finding a DC version of their power supplies (e.g. the pico-box X9-ATX
69.
by scottlamb 5mo ago
I would be curious to see how LifePO4 power stations compare. * These power stations are better than conventional (lead-acid battery) UPSs in the sense that they're cheaper, more flexible, have dramatically longer battery life, and req
70.
by scottlamb 5mo ago
> Last I checked, high-resolution scroll reporting over USB is not based on pixels but on fractions of a detent, which is annoying to say the least. I'd just be happy if it let me use the multiplier; don't care if it's not
71.
by scottlamb 5mo ago
macOS is a whole thing in terms of smooth scrolling, or HID (human interface devices) in general. It seems like Apple just doesn't put a lot of effort in terms of working with third-party HIDs: * There's a standard way to enable h
72.
by scottlamb 5mo ago
That's the most reasonable interpretation I've heard. I'm not assuming they're being reasonable, though. I have a deeply negative view of the crytocurrency industry including Coinbase, and they just wrote "non-techn
73.
by scottlamb 5mo ago
Everybody had a chance to learn it those year. No one who had already learned to code had a chance to learn it first , as in before other ways of coding. Not everyone can be AI-native . You might assume they aren't going to be so stu
74.
by scottlamb 5mo ago
> I am among the oldest on our team and also the most in tune with AI. Congratulations. But you completely missed my point. I didn't say old people can't be in tune with AI. > I see AI-native as those who have embraced it Th
75.
by scottlamb 5mo ago
> We’ll be concentrating around AI-native talent Is this code for "we're firing all the old people"? As I understand it, I can say I'll only hire proficient English speakers (a "bona fide occupational requireme
76.
by scottlamb 5mo ago
> Paraphrasing the crux of the issue: "It's regular practice in Colorado to list license plates with both versions, the one with 'O's and the other with Zeros in the warrant list." Insane. Practice. Agree. > A
77.
by scottlamb 5mo ago
> I didn't quote anything from the article. You referred to it: "just now I glanced at the article and it seems the author writes in a confusing way..." > I was responding to the comment, not the article. It sure looks
78.
by scottlamb 5mo ago
>> FastCGI is better than HTTP for these things. > FastCGI and HTTP are at two different levels. HTTP is for data transfer from, say, a browser and a server. FastCGI is for handling that data between the server and an application.
79.
by scottlamb 5mo ago
> And they're not profitable. That part should be worrying; will they need to increase prices significantly when they decide to become profitable? But more broadly, I agree that Waymo is an improvement over taxis or Uber/Lyft.
80.
by scottlamb 6mo ago
In general, yes, I might use an LLM for a tedious refactor. In this case I might try < https://github.com/ast-grep/ast-grep > though.
81.
by scottlamb 6mo ago
I ran across their trackpad [1] last night; it uses the same Azoteq TPS65 module as the keyboard I just bought. Unfortunately the module's discontinued. [2, 3] I guess people have been going through stockpiles of these given that the l
82.
by scottlamb 6mo ago
I think you're moving the goalpost here. There's a measurement improvement to CPU usage. You're over-provisioned on CPU and don't care. Fine.
83.
by scottlamb 6mo ago
> Yes, there are workloads where huge-pages do not bring any measurable benefit I really doubt it, except of course workloads where you just use a trivial amount of memory to begin with. In systems I've seen, anywhere from 5% to 15%
84.
by scottlamb 6mo ago
FYI: huge pages isn't just a system-wide toggle, but a variety of things you can do: * explicit huge pages * transparent huge pages system-wide default * app-specific or even mapping-specific toggles * various memory allocator settings
85.
by scottlamb 6mo ago
Wow, yuck. (The "Why do we even have that lever?!" line comes to mind.) ...even so, without a disk failure, that probably wasn't the cause of this event.
86.
by scottlamb 6mo ago
Might be true, but I don't see any aspect of that which is relevant to this event: * Data single obviously means losing a single drive will cause data loss, but no drive was actually lost, right? * Metadata DUP (not sure if it's a
87.
by scottlamb 6mo ago
> The number of people at Amazon is pretty much irrelevant; the org is going to ensure that someone is keeping an eye on kernel performance, but also that the work isn’t duplicative. I'd guess they have dozens of people across say a
88.
by scottlamb 6mo ago
By "those applications" I'm talking about other applications affected by this regression. There are several apps in addition to Redis that recommend limiting the transparent huge page configuration. (Some of them recommend u
89.
by scottlamb 6mo ago
I doubt they explicitly said "I'll run without huge pages, which is an important AWS configuration". They probably just forgot a step. And "someone at Amazon" describes a lot of people; multiply your mental probabil
90.
by scottlamb 6mo ago
> While using huge pages whenever possible is the right solution and this should be enough for PostgreSQL, perhaps there are applications that cannot use huge pages and which are affected by the regression. It will be more interesting to

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