Viewing profile — gfv

sysctl vm.overcommit_memory=2. However, programs for *nix-based systems usually expect overcommit to be on, for example, to support fork(). This is a stark contrast with Windows NT…

I was talking specifically about double-precision floats. Single-precision floats can represent every integer up to +-2^24.

I have a way simpler explanation. IEEE 754 double can only represent integers up to 2^53 without precision loss, so if you naively average two numbers greater than 2^52, you get an…

Yes, you can chuck your SSD into a freezer. Data retention time increases exponentially in lower temperatures, so keeping it in a regular +4C fridge is enough to extend retention b…

Powershell is mostly case-insensitive, and most of the core cmdlets have short aliases. Try `Get-Alias` (or `gal`) to learn more.

You can use streaming WALs, like Litestream does. It is a pretty simple way to do incremental backups.

Yes, there is the technical appendix to the 2019 judgement. https://www.jfsa.org.uk/uploads/5/4/3/1/54312921/technical_a...

It really doesn't help that it's written in ancient K&R C, but if you spend ten or so minutes just staring at it, familiar shapes and patterns start to appear. (Give it a try!) Inc…

In datacenters, you're mostly limited by the power (and thus cooling). Most commercial DCs only let you use up to about 10kW per rack. For standard 40U racks it's just 250W/RU, giv…

Zenfone 10 is only marketed as a compact phone. In reality, it is just slightly narrower than a Samsung S23 (146.3 x 70.9 x 7.6).

The shining example is https://grafana.wikimedia.org .

>why do we measure time in hours, days, weeks, months, and years rather than in decaseconds, hectoseconds, kiloseconds, megaseconds, etc.? We don't use them generally because at th…

How long do you keep the transaction logs before rewriting them? I too had a few EC2 instances go down with signs of being severed from the EBS in the recent couple of weeks; mine …

I'm pretty sure Lovecraft was at most a passing thought. The more immediate context would be the Putin's internet "AMA" in 2006[1], where "how do you feel about the awakening of Ct…

When operating a complex system like Reddit, you know that something is going to happen during a significant event, but you generally don't know exactly what will break first. What…

Individually disposable, yes. But if you have a cluster of those, and you powered them on at the same time -- as it often happens -- you're in for an exciting ride when your server…

There are always bugs in silicon, just like there are bugs in software. They mostly show up under "a highly specific and detailed set of internal timing conditions". There are 40 d…

Precisely. Compare your comment with these excerpts from the article: >Windows 95 is reasonably fast in performance, and is not compromised by the arguably frivolous animation and …

Windows 95 was released 13 years prior to the article, roughly the same time span as between Windows 7 release and today. Windows 7 is still installed on a single-digit percentage …

SSE came along much later. At the time it was common-ish to just slowly send HTML tags. I think at some point there was a gorgeous hack where they dynamically rendered and sent GIF…

A connection is unwarranted if AWS gets an abuse letter about it.

Intel has been making GPUs since roughly 2002, 845 chipset series. (There were earlier ones, but I'm

Datacenters should have good, reliable and redundant supplies of power and connectivity. It is much easier to build a data center near or in a population center where fiber and ele…