Brendan Gregg

MARCH 16, 2024

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. And for leaf routines (which never establish a frame), this is a non-issue.

Java 137

Java Cache Google Hardware 137

Jos

JUNE 2, 2018

How would you architecture a non-trivial size web project (client, server, databases, caching layer)? In May 2015, Vox Media wrote about the slowness of their site and commitment to make them faster. What happens when a browser tries to load a website? What are some reasons why a site can take too long to load?

Performance 237

Performance Speed Google Media 237

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. This is why our approach is briefly pausing log processing during steps 2–4 so that the watermarks are not missed. Beresford, and Boerge Svingen. Online event processing.

Database 221

Database Traffic Transportation Open Source 221

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. This is why our approach is briefly pausing log processing during steps 2–4 so that the watermarks are not missed. Beresford, and Boerge Svingen. Online event processing.

Database 206

Database Traffic Transportation Open Source 206

Brendan Gregg

FEBRUARY 28, 2023

Titus, the Netflix container management platform, is now open source,” [link] Apr 2018 - [Cutress 19] Dr. DDR6: Here's What to Expect in RAM Modules,” [link] Nov 2020 - [Salter 20] Jim Salter, “Western Digital releases new 18TB, 20TB EAMR drives,” [link] Jul 2020 - [Spier 20] Martin Spier, Brendan Gregg, et al.,

Performance 103

Performance Latency Cache Virtualization 103

CSS - Tricks

JUNE 5, 2020

In 2015, Google published a blog post announcing Brotli and released its source code on GitHub. The service categorized all the optimizations in three groups consisting of several “Content,” “Delivery,” and “Cache” optimizations. We only cache hot files in memory at edge servers. Brotli’s beginning…. This is all so good.

Cache 83

Cache Website Servers Open Source 83

The Morning Paper

JANUARY 23, 2020

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages , Allspaw, Masters thesis, Lund University 2015. This is part 2 of our look at Allspaw’s 2015 master thesis (here’s part 1 ). 1:06pm reports of the personalised homepage having issues start appearing from multiple sources.

Internet 53

Internet Internet Cache Engineering 53

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. The fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest. The Moto G4 , for example.

Performance 127

Performance Network Mobile Metrics 127

Randon ASCII

FEBRUARY 25, 2018

This was starting to look like a Windows file cache bug. Maybe something to do with multi-socket coherency of the disk and cache or ??? A twitter user shared a report of them hitting the bug in 2015 , which is not hugely shocking since this bug appears to be 8+ years old. Russian translation is here. Update, October 2018.

Programming 79

Programming Hardware Cache Code 79

MachMetrics

JULY 31, 2020

Many caching plugins like WPRocket also offer Gzip compression right out of the box. In 2015, they released a version to be used for HTTP compression. For our WordPress readers out there, the above methods will still work for you as well! However, you can also use various plugins that will do the job as well. Brotli Compression.

Speed 67

Speed Servers Google Cache 67

Tim Kadlec

MARCH 14, 2019

That’s what it was called back in 2015 when the team working on the service wrote up a detailed paper about the optimizations Flywheel applied , and why. Developers can also opt out of Lite pages for their sites by applying a Cache-Control: no-transform header to their responses.

Google 63

Google Traffic Cache Servers 63

Brendan Gregg

FEBRUARY 28, 2023

Titus, the Netflix container management platform, is now open source,” [link] , Apr 2018 [Cutress 19] Dr. DDR6: Here's What to Expect in RAM Modules,” [link] , Nov 2020 [Salter 20] Jim Salter, “Western Digital releases new 18TB, 20TB EAMR drives,” [link] , Jul 2020 [Spier 20] Martin Spier, Brendan Gregg, et al.,

Performance 52

Performance Latency Cache Virtualization 52

SQL Server According to Bob

JUNE 3, 2016

I have studied code check-ins and tested the improvements seeing the scalability improvement first hand and running SQL Server 2016 for internal SQL Support needs since Mar 2015 because of the improved features and scalability.” The following table is taken from an ASP.NET, session state cache, stress test. Auto-soft NUMA.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

Randon ASCII

AUGUST 16, 2018

Aside: I just want to say thank you to 2015 me for asking Microsoft to improve their thread naming mechanisms, and thank you to Microsoft for doing everything I suggested – thread names in WPA are great ! The CFG memory block is best thought of a cache with bounded size. The problem suddenly became clearer. MiB of CFG memory, and 59.2

Programming 75

Programming Virtualization Code Processing 75

Jos

JUNE 2, 2018

How would you architecture a non-trivial size web project (client, server, databases, caching layer)? In May 2015, Vox Media wrote about the slowness of their site and commitment to make them faster. What happens when a browser tries to load a website? What are some reasons why a site can take too long to load?

Performance 100

Performance Speed Google Media 100

Smashing Magazine

AUGUST 9, 2021

One question I’ve often encountered is, “Why do we need HTTP/3 so soon after HTTP/2, which was only standardized in 2015?” However, many other devices are sitting between the client and the server that also have their own TCP code on board (examples include firewalls, load balancers, routers, caching servers, proxies, etc.).

Transportation 145

Transportation Internet Internet Network 145

SQL Performance

JULY 16, 2019

The Tick-Tock release cycle basically fell apart by about 2015 , as Intel was unable to move from a 14nm manufacturing process to a 10nm manufacturing process. They will also have up to 256MB of L3 cache per processor. Intel has been stuck at 14nm in the server space since the Broadwell release in Q4 of 2016.

Servers 46

Servers Hardware Architecture Retail 46

Enprowess

MAY 24, 2022

When a web crawler visits a server that has already rendered the content and pictures, indexing and caching of the content becomes quicker. React Native was used for the very first time in the year 2015 by Facebook for developing mobile applications. It gives a massive boost to the overall SEO strategy. React Native.

Mobile 52

Mobile Open Source Virtualization Speed 52

Enprowess

JANUARY 12, 2022

So it is convenient for all to use irrespective of internet speed and it works offline using cached data. Internet of things (IoT) – Number of IoT devices 2015-2025 Statista. Offline Support : SPA consumes less bandwidth; meanwhile, it loads pages once only. trillion US dollars, and there will be more than 75.50 Smart cities.

Blockchain 59

Blockchain IoT Development Serverless 59

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts 7. Here are the top ten tools you can run and present as a generic BPF observability dashboard, along with suggested visualizations: Tool Shows Visualization 1. execsnoop New processes (via exec(2)) table 2. opensnoop Files opened table 3. ext4slower Slow filesystem I/O table 4.

Open Source 40

Open Source Latency Cache Energy 40

Percona

JUNE 4, 2023

GA 17 October 2015 10.1.8 GA 21 October 2015 5.7.9 MySQL Percona Server for MySQL MariaDB Server 3 December 2010 5.5.8 GA 28 April 2011 5.5.11-20.2 GA 11 April 2012 5.5.23 GA 5 February 2013 5.6.10 GA 7 October 2013 5.6.13-61.0 GA 31 March 2014 10.0.10 GA 23 February 2016 5.7.10-3 3 GA 23 May 2017 10.2.6 GA MySQL is currently at 8.0.3

Open Source 52

Open Source Servers Storage Scalability 52

Smashing Magazine

JANUARY 6, 2020

In real-life world, most products aren’t even close: an median bundle size today is around 417KB , which is up 42% compared to early 2015. PRPL stands for Pushing critical resource, Rendering initial route, Pre-caching remaining routes and Lazy-loading remaining routes on demand. Assets Optimizations. Other options are available , too.

Performance 112

Performance Cache Servers Network 112

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. compared to early 2015. Shipped in Next.js and in Gatsby v2.20.7.

Performance 145

Performance Cache Metrics Media 145

Smashing Magazine

JANUARY 7, 2019

In real-life world, most products aren’t even close: an average bundle size today is around 400KB , which is up 35% compared to late 2015. PRPL stands for Pushing critical resource, Rendering initial route, Pre-caching remaining routes and Lazy-loading remaining routes on demand. We could also go beyond the bundle size budget though.

Performance 111

Performance Cache Network Metrics 111