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The most popular blog posts about systems & performance on Hacker News. 458 posts.
In the era of big data and AI, many data-intensive applications exhibit requirements that cannot be satisfied by traditional batch processing models. Streaming applications, such as click stream analytics , IoT data processing, network monitoring , or financial fraud detection , must support high processing rates…
(Adapted from a Quora answer .) OS/2 1.x was a clean-sweep, largely legacy-free OS with only limited backwards compatibility with DOS. OS/2 2.x and later used VMs to do the hard stuff of DOS emulation, because they ran on a chip with hardware-assisted DOS VMs: the 80386s Virtual86 mode.…
This is a follow up to Defining the Web platform post from a year ago. It doesn’t try to answer questions but instead attempts to figure out what are the rig...
Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them. Tool source link is at t…
Important article slash rant about the recent story involving Linus Torvalds and his behavior in the Linux kernel development circles, the subsequent apology, the fallout, and the disturbing implications and ramifications of the whole affair on the long-term survival of Linux as a whole
In this short post I’m going to attempt to convince you that current network (Internet) latencies are here to stay, because they are already within a fairly small factor of what is possible u…
Dmesg allows us to grasp what's going on under the hood when the kernel gets bad. Check out how dmesg is able to read kernel logs and show to the user.
One of the lesser known parts of Java is InterruptedException. With its vague-sounding name and non-committal Javadoc, few people are able to figure out what they need to do with it. Since I myself didn’t really grok it, I decided to put together a post explaining how interruption works. If you are looking for a more…
This page has been Tagged As Software This is a truism that lots of people quote, but it can be hard to remember, especially in the heat of battle (as it were). Rather fortunately it came to mind just when needed, as I found something completely unexpected.
Posted by Ivan Fratric, Google Project ZeroIntroductionVulnerabilities in the VBScript scripting ...
**Russian ALFA Class interceptor submarine** At the height of the Cold War NATO submariners found themselves confronting a Soviet submarine which not only greatly out-performed their own boats, but which could operate beyond the reach of their weapons… Read More >….
Access technologies from partnerships with the community and leaders. Everything open source at Intel. We have a lot to share and a lot to learn.
You are seeing this because the administrator of this website has set up Anubis to protect the server against the scourge of AI companies aggressively scraping websites. This can and does cause downtime for the websites, which makes their resources inaccessible for everyone.
This post discusses approaches to gracefully restart a Go application with a working sample, useful for developers and SREs who build services written in Go.
You might have read that Mozilla recently switched Windows builds to clang-cl . More recently, those Windows builds have seen both PGO (Profile-Guided Optimization) and LTO (Link-Time Optimization) enabled .
Quote: if you DO want to get performance from changing mallocs, make sure to test them with your own app Another Quote: in our humble opinion, overall winner...
I tried to boot an iOS 12 kernelcache in QEMU: I managed to get as far as IOKit startup before receiving a kernel panic. I learned a lot about how iOS boots up with this project.
Context A few years after I created the Elastic Binary Trees (ebtree) , I started to get some feedback from users who needed to use the...
tl;dr: Rebuilding a target because its mtime is older than the mtimes of its dependencies, like `make` does, is very error prone. redo does...
With packet.net making bare metal servers available to cloud users, Percona CTO Vadim Tkachenko enjoys the opportunity to carry out some performance benchmarks with EPYC CPU, and experiences some surprising results running Percona Server for MySQL under systemd.
The title may lead you to think that this post is another ranting post about the downside of a “Single Page Application”. It is more about…
