GoKawiil - Latest Tech News & Aggregated Headlines

Optimizing ClickHouse for Intel's 280 core processors

news.ycombinator.com Unknown 2025-09-22 03:46:03

This is a guest post from Jiebin Sun, Zhiguo Zhou, Wangyang Guo and Tianyou Li, performance optimization engineers at Intel Shanghai. Intel's latest processor generations are pushing the number of cores in a server to unprecedented levels - from 128 P-cores per socket in Granite Rapids to 288 E-cores per socket in Sierra Forest, with future roadmaps targeting 200+ cores per socket. These numbers multiply on multi-socket systems, such servers may consist of 400 and more cores. The paradigm of "m

Topics: cache hash memory optimization performance

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AMD’s RDNA4 GPU architecture

news.ycombinator.com Chester Lam 2025-09-27 20:04:18

RDNA4 is AMD’s latest graphics-focused architecture, and fills out their RX 9000 line of discrete GPUs. AMD noted that creating a good gaming GPU requires understanding both current workloads, as well as taking into account what workloads might look like five years in the future. Thus AMD has been trying to improve efficiency across rasterization, compute, and raytracing. Machine learning has gained importance including in games, so AMD’s new GPU architecture caters to ML workloads as well. Fro

Topics: amd cache l2 memory rdna4

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Reduce bandwidth costs with dm-cache: fast local SSD caching for network storage

news.ycombinator.com Unknown 2025-09-24 17:14:58

How we cut AWS bandwidth costs 95% with dm-cache: fast local SSD caching for network storage The bandwidth billing challenge When deploying infrastructure across multiple AWS availability zones (AZs), bandwidth costs can become a significant operational expense. Some of our Upsun infrastructure spans three AZs for high availability, but this architecture created an unexpected challenge with our Ceph-based storage system. Since Ceph distributes data across the cluster and AWS bills for inter-A

Topics: cache caching data network storage

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Interesting PEZY-SC4s

news.ycombinator.com Chester Lam 2025-10-01 12:15:28

Japan has a long history of building domestic supercomputer architectures dating back to the 1980s. PEZY Computing is one player in Japan’s supercomputing scene alongside Fujitsu and NEC, and has taken several spots in the Green500 list. RIKEN’s Exascaler-1.4 used PEZY-SC chips to take first place in Green500’s November 2015 rankings. More recently, PEZY-SC3 placed 12th on Green500’s November 2021 list. PEZY presented their newest architecture, PEZY-SC4S, at Hot Chips 2025. While the physical pr

Topics: cache instruction pezy sc3 sc4s

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Slow Roku TV? This 30-second routine will keep your device running like new

zdnet.com Chris Bayer 2025-10-06 16:26:00

Maria Diaz/ZDNET Follow ZDNET: Add us as a preferred source on Google. Can you believe that the first Roku device launched 17 years ago? It was initially developed in partnership with Netflix to stream its "Watch Instantly" service. Since then, the company has released numerous generations of streaming players and its very own Roku TVs -- which means you might own one of these older devices. What is a cache? Just like your computer or smartphone, your Roku TV also stores temporary data (the

Topics: cache reset roku settings tv

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How to clear your iPhone cache (and why you should do it before upgrading to iPhone 17)

zdnet.com Elyse Betters Picaro 2025-10-09 05:00:17

Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways Clearing your iPhone cache effectively refreshes the system memory. It's recommended to do so regularly, but you especially should when your phone feels sluggish. There are steps you can take to clear cache from Safari, Chrome, and other browsers. You might not be thinking about it every day, but clearing your iPhone's browsing cache can greatly improve the user experience. Cache is the temporary s

Topics: app cache clear iphone safari

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IRHash: Efficient Multi-Language Compiler Caching by IR-Level Hashing

news.ycombinator.com Tobias Landsberg 2025-10-11 14:43:01

Compilation caches (CCs) save time, energy, and money by avoiding redundant compilations. They are provided by means of compiler wrappers (Ccache, sccache, cHash) or native build system features (Bazel, Buck2). Conceptually, a CC pays off if the achieved savings by cache hits outweigh the extra costs for cache lookups. Thus, most techniques try to detect a cache hit early in the compilation process by hashing the (preprocessed/tokenized) source code, but hashing the AST has also been suggested t

Topics: cache ccache chash end irhash

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Cache

news.ycombinator.com Unknown 2025-10-12 23:46:23

Finds the Cache entry whose key is the request, returning a Promise that resolves to true if a matching Cache entry is found and deleted. If no Cache entry is found, the promise resolves to false . Takes both a request and its response and adds it to the given cache. Takes an array of URLs, retrieves them, and adds the resulting response objects to the given cache. Takes a URL, retrieves it and adds the resulting response object to the given cache. This is functionally equivalent to calling f

Topics: cache code matching response service

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How to clear your iPhone cache (and why you shouldn't wait to do it)

zdnet.com Elyse Betters Picaro 2025-10-15 15:25:00

Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways Clearing your iPhone cache effectively refreshes the system memory. It's recommended to do so regularly, but you especially should when your phone feels sluggish. There are steps you can take to clear cache from Safari, Chrome, and other browsers. You might not be thinking about it every day, but clearing your iPhone's browsing cache can greatly improve the user experience. Cache is the temporary s

Topics: app cache clear iphone safari

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How to clear your Android phone cache (and the hidden problem it actually fixes)

zdnet.com Elyse Betters Picaro 2025-10-18 04:58:00

Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. Google released Android 16 back in June to Pixel devices and select OEMs, bringing performance improvements, new Material You changes, and more upgrades. If you want to try this update but are hesitant because you've noticed your Android phone or tablet already feels too sluggish, clearing app and browser caches can give it a fresh boost and free up some storage space. Also: The best Android phones to buy in 2025 Over time

Topics: android apps cache clear data

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Replacing a cache service with a database

news.ycombinator.com Unknown 2025-10-20 14:41:15

Replacing a cache service with a database I’ve been thinking about this: will we ever replace caches entirely with databases? In this post I will share some ideas and how we are moving towards it. tl;dr we are still not there, yet. Why do we even use caches? Caches solve one important problem: providing pre-computed data at insanely low latencies, compared to databases. I am talking about typical use cases where we use a cache along with the db (cache aside pattern), where the application alw

Topics: cache caches data databases use

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Replacing a Cache Service with a Database

news.ycombinator.com Unknown 2025-10-20 19:41:15

Replacing a cache service with a database I’ve been thinking about this: will we ever replace caches entirely with databases? In this post I will share some ideas and how we are moving towards it. tl;dr we are still not there, yet. Why do we even use caches? Caches solve one important problem: providing pre-computed data at insanely low latencies, compared to databases. I am talking about typical use cases where we use a cache along with the db (cache aside pattern), where the application alw

Topics: cache caches data databases use

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Learning about GPUs through measuring memory bandwidth

news.ycombinator.com Unknown 2025-11-06 21:35:18

Learning About GPUs Through Measuring Memory Bandwidth At Traverse Research, we need to have a deep understanding of GPU performance to develop our benchmark, Evolve. Additionally, we sometimes do projects for very specific hardware where we need to know all the ins and outs of this hardware. One way we do this is by using microbenchmarks to measure specific parts of the GPU to get new insights. In this article, we will share what we learned from measuring the memory bandwidth of various GPUs.

Topics: byte cache data hardware memory

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How to clear your iPhone cache (and why you should do it before the iOS 26 update)

zdnet.com Elyse Betters Picaro 2025-11-10 22:25:24

Kerry Wan/ZDNET ZDNET's key takeaways Clearing your iPhone cache effectively refreshes the system memory. It's recommended to do so regularly, but you especially should when your phone feels sluggish. There are steps you can take to clear cache from Safari, Chrome, and other browsers. Get more in-depth ZDNET tech coverage: Add us as a preferred Google source on Chrome and Chromium browsers. You might not be thinking about it every day, but clearing your iPhone's browsing cache can greatly

Topics: app cache clear iphone safari

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Critical Cache Poisoning Vulnerability in Dnsmasq

news.ycombinator.com Unknown 2025-11-11 02:56:47

[Dnsmasq-discuss] [Security Report] Critical Cache Poisoning Vulnerability in Dnsmasq Dear Dnsmasq Security Team, We would like to responsibly disclose a critical cache poisoning vulnerability affecting the Dnsmasq DNS software. The issue allows attackers to inject arbitrary malicious DNS resource records and poison domain names without requiring advanced techniques, only by leveraging a single special character. Report Summary Vulnerability Type: Logic flaw in cache poisoning defense Affected

Topics: attack cache dnsmasq https poisoning

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How to clear your TV cache (and why it greatly improves performance)

zdnet.com Chris Bayer 2025-11-15 11:18:00

Adam Breeden/ZDNET In the age of smart TVs, convenience is king. With just a few clicks, we can dive into endless entertainment -- but that ease comes with a downside: the buildup of cache data. Also: How to disable ACR on your TV (and why doing so makes such a big difference) Just like on your phone or computer, a cluttered TV cache can lead to sluggish performance, app crashes, and even hinder new content from loading properly. That's why it's important to clear all that extra cache and mak

Topics: app cache clear clearing tv

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Bcachefs to be removed from mainline Linux kernel

news.ycombinator.com Unknown 2025-11-25 21:09:50

* [GIT PULL] bcachefs changes for 6.17 @ 2025-07-28 15:14 Kent Overstreet 2025-08-05 21:19 ` Malte Schröder 2025-08-10 6:20 ` Gerhard Wiesinger 0 siblings, 2 replies; 39+ messages in thread From: Kent Overstreet @ 2025-07-28 15:14 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-bcachefs, linux-fsdevel, linux-kernel Schedule notes for users: I've been digging through the bug tracker and polling users to see what bugs are still outstanding, and - it's not much. So, the experimental label is c

Topics: bcachefs class convert fs guards

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Cloudflare Is Not a CDN

news.ycombinator.com Unknown 2025-11-26 11:31:43

I love Cloudflare. I’ve always been a fan of their service and their generous free plan, which they’ve never backtracked from. They still offer unlimited bandwidth with very few limitations. Users have stories about serving terabytes of data per day without Cloudflare knocking on their door to upgrade. We, too, use Cloudflare under the hood, which enables us to offer unlimited bandwidth for our users as well. This might make people wonder: Why pay for a CDN when Cloudflare is free? When I star

Topics: cache cdn cloudflare latency origin

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Caches: LRU vs. Random

news.ycombinator.com Unknown 2025-12-08 05:45:02

Once upon a time, my computer architecture professor mentioned that using a random eviction policy for caches really isn't so bad. That random eviction isn't bad can be surprising — if your cache fills up and you have to get rid of something, choosing the least recently used (LRU) is an obvious choice, since you're more likely to use something if you've used it recently. If you have a tight loop, LRU is going to be perfect as long as the loop fits in cache, but it's going to cause a miss every t

Topics: cache caches lru miss random

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How to clear the cache on your Windows 11 PC (and why it greatly improves performance)

zdnet.com Kyle Kucharski 2025-12-15 02:35:00

Elyse Betters Picaro/ZDNET If your computer desktop looks a little chaotic and you're noticing some performance slowdown, it might be time to do a cleanup. The best way to keep things running smoothly is to ensure you're running the most updated version of Windows (you'd be surprised how many folks' devices are several updates behind). But if you're up-to-date, there are other things you can do to optimize. Also: A decade of Windows 10: Chaos, Cortana, and conspiracy theories that never panned

Topics: cache cleanup files space windows

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How to clear your TV cache (and why it makes such a noticeable difference)

zdnet.com Chris Bayer 2025-12-18 21:52:00

Adam Breeden/ZDNET In the age of smart TVs, convenience is king. With just a few clicks, we can dive into endless entertainment -- but that ease comes with a downside: the buildup of cache data. Also: How to disable ACR on your TV (and why doing so makes such a big difference) Just like on your phone or computer, a cluttered TV cache can lead to sluggish performance, app crashes, and even hinder new content from loading properly. That's why it's important to clear all that extra cache and mak

Topics: app cache clear clearing tv

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.gitignore Is Inherently Sisyphean

news.ycombinator.com Unknown 2025-12-19 23:49:50

You just started a new project. You ran cargo init , poetry init and go mod init . Those commands created the necessary files to work, it also added the following lines to your .gitignore: target __pycache__ bin All great. You continue implementing features, and when the time comes, you publish your project to your Git hosting platform of choice. People start to get interested in your project. One even decides that he's going to implement a new feature! Literally free work done for you! Alr

Topics: __pycache__ bin directory files gitignore

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Fast and cheap bulk storage: using LVM to cache HDDs on SSDs

news.ycombinator.com Unknown 2025-12-24 18:38:27

Since the inception of solid-state drives (SSDs), there has been a choice to make—either use SSDs for vastly superior speeds, especially with non-sequential read and writes (“random I/O”), or use legacy spinning rust hard disk drives (HDDs) for cheaper storage that’s a bit slow for sequential I/O and painfully slow for random I/O. The idea of caching frequently used data on SSDs and storing the rest on HDDs is nothing new—solid-state hybrid drives (SSHDs) embodied this idea in hardware form, wh

Topics: cache cached dev lvm partition

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Intel May Be Prepping a Massive Apology to Gamers

gizmodo.com Kyle Barr 2025-12-26 04:50:02

If the rumors are to be believed, Intel may be gearing up for a major apology to gamers in the form of a suite of gaming-specific CPUs. Intel has suffered through multiple crises, a CEO ouster, sweeping layoffs, and a dour outlook on the future of the once-massive chipmaker. To make its case to consumers, Intel needs goodwill, and who better to get it from than the outspoken gamer crowd? Multiple semi-reliable leakers have come out of the woodwork to talk about Intel’s plans to copy what makes

Topics: cache chips cpus gaming intel

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Intel May be Prepping a Massive Apology to Gamers

gizmodo.com Kyle Barr 2025-12-26 16:50:02

If the rumors are to be believed, Intel may be gearing up for a major apology to gamers in the form of a suite of gaming-specific CPUs. Intel has suffered through multiple crises, a CEO ouster, sweeping layoffs, and a dour outlook on the future of the once-massive chipmaker. To make its case to consumers, Intel needs goodwill, and who better to get it from than the outspoken gamer crowd? Multiple semi-reliable leakers have come out of the woodwork to talk about Intel’s plans to copy what makes

Topics: cache chips cpus gaming intel

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How to clear your iPhone cache (and why you should do it before installing iOS 26 public beta)

zdnet.com Elyse Betters Picaro 2025-12-28 21:52:00

What is cache? Cache -- or browser cache -- is the temporary storage of website files. So, things like images, scripts, and cookies that your browser saves on your phone to make pages load faster the next time you visit. Also: Every iPhone model that can be updated to iOS 26 (and which ones don't support it) Over time, though, those files can add up, taking a large bite out of your device storage and slowing things down. That's why it's smart to clear your browser cache regularly. In this art

Topics: app cache cookies iphone storage

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Optimizations That Aren't

news.ycombinator.com Unknown 2025-12-27 10:49:24

Optimizations that aren't We all like it when our code is fast. Some of us like the result, but dislike the process of optimization; others enjoy the process. However, optimization for the sake of optimization is wrong, unless you’re doing it in your pet project. Optimized code is sometimes less readable and, consequently, harder to understand and modify; because of that, optimization often introduces subtle bugs. Since optimization is not a process with only positive effects, in production it

Topics: cache code node optimization search

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Reverse Engineering the GHA Cache to Improve Performance

news.ycombinator.com Unknown 2026-01-01 02:04:27

This article walks you through how to use Depot's API within your own code to set up projects and run your Docker builds as a service on Depot's infrastructure. We recently announced our new product, Depot-hosted GitHub Actions runners. Our runners bring an extra improvement in cache speed that's no longer limited to our accelerated Docker builds. We're excited to be bringing faster caching to all kinds of GitHub Actions workloads. As we were building our runners, we learned a lot about the un

Topics: actions cache depot github runners

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How to clear your TV cache (and why it matters so much to performance)

zdnet.com Chris Bayer 2026-01-01 11:05:00

Kerry Wan/ZDNET In the age of smart TVs, convenience is king. With just a few clicks, we can dive into endless entertainment -- but that ease comes with a downside: the buildup of cache data. Also: How to disable ACR on your TV (and why doing so makes such a big difference) Just like on your phone or computer, a cluttered TV cache can lead to sluggish performance, app crashes, and even hinder new content from loading properly. That's why it's important to clear all that extra cache and make y

Topics: app cache clear clearing tv

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Reverse engineering GitHub Actions cache to make it fast

news.ycombinator.com Unknown 2026-01-01 11:17:43

Before this work began, we already had a faster alternative to Github Actions cache. Our approach was different: we forked each of the popular first-party actions that depended on Actions cache to point to our faster, colocated cache. But my coworkers weren’t satisfied with that solution, since it required users to change a single line of code. Apart from the user experience, maintaining these forks steadily turned into a nightmare for us. We kept at it for a while, but eventually reached an in

Topics: 06 actions cache github proxy

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Latest Tech News

Optimizing ClickHouse for Intel's 280 core processors

AMD’s RDNA4 GPU architecture

Reduce bandwidth costs with dm-cache: fast local SSD caching for network storage

Interesting PEZY-SC4s

Slow Roku TV? This 30-second routine will keep your device running like new

How to clear your iPhone cache (and why you should do it before upgrading to iPhone 17)

IRHash: Efficient Multi-Language Compiler Caching by IR-Level Hashing

Cache

How to clear your iPhone cache (and why you shouldn't wait to do it)

How to clear your Android phone cache (and the hidden problem it actually fixes)

Replacing a cache service with a database

Replacing a Cache Service with a Database

Learning about GPUs through measuring memory bandwidth

How to clear your iPhone cache (and why you should do it before the iOS 26 update)

Critical Cache Poisoning Vulnerability in Dnsmasq

How to clear your TV cache (and why it greatly improves performance)

Bcachefs to be removed from mainline Linux kernel

Cloudflare Is Not a CDN

Caches: LRU vs. Random

How to clear the cache on your Windows 11 PC (and why it greatly improves performance)

How to clear your TV cache (and why it makes such a noticeable difference)

.gitignore Is Inherently Sisyphean

Fast and cheap bulk storage: using LVM to cache HDDs on SSDs

Intel May Be Prepping a Massive Apology to Gamers

Intel May be Prepping a Massive Apology to Gamers

How to clear your iPhone cache (and why you should do it before installing iOS 26 public beta)

Optimizations That Aren't

Reverse Engineering the GHA Cache to Improve Performance

How to clear your TV cache (and why it matters so much to performance)

Reverse engineering GitHub Actions cache to make it fast

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