The Morning Paper

OCTOBER 18, 2020

The resulting performance depends on the quality of the model predictions, a higher quality model leads to fewer collisions, and fewer out-of-order items to be patched in the final Insertion Sort pass. If it’s high performance you’re after, you can’t ignore mechanical sympathy. Sympathy for the machine. Evaluation.

Cache 137

Cache C++ Java Tuning 137

Brendan Gregg

APRIL 14, 2022

On the Netflix Java/Linux/EC2 stack there were no working mixed-mode flame graphs, no production safe dynamic tracer, and no PMCs: All tools I used extensively for advanced performance analysis. Apart from developing tools, much of my time has been spent helping teams with performance issues and evaluations. How would I do my job?

Java 145

Java Cloud Cache AWS 145

The Morning Paper

MARCH 8, 2020

For such workloads, shared-nothing architectures beget high cost, inflexibility, poor performance, and inefficiency, which hurts production applications and cluster deployments. The caching use case may be the most familiar, but in fact it’s not the primary purpose of the ephemeral storage service.

Storage 112

Storage Engineering Cache Serverless 112

The Netflix TechBlog

SEPTEMBER 8, 2020

Over the course of this post, we will talk about our approach to this migration, the strategies that we employed, and the tools we built to support this. This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI.

Latency 233

Latency Cache Java Traffic 233

Percona

JANUARY 9, 2023

Looking at how people are using COUNT(*) and COUNT(col), it looks like most of them think they are synonyms and just use what they happen to like, while there is a substantial difference in performance and even query results. But why we can’t just cache the actual number of the rows? Extra: Using where 1 row in set, 1 warning (0.00

Cache 76

Cache Engineering Storage Speed 76

Percona

AUGUST 31, 2018

In this blog, we will establish basic guidelines for setting PostgreSQL database parameters to improve database performance according to workload. Bear in mind that while optimizing PostgreSQL server configuration improves performance, a database developer must also be diligent when writing queries for the application. shared_buffer.

Tuning 55

Tuning Database Performance Benchmarking 55

Smashing Magazine

JANUARY 15, 2019

How Improving Website Performance Can Help Save The Planet. How Improving Website Performance Can Help Save The Planet. Perhaps the biggest win when it comes to making websites more sustainable is that performance, user experience and sustainability are all neatly intertwined. Jack Lenox. 2019-01-15T13:30:32+01:00.

Website Performance 73

Website Performance Website Energy Performance 73

Sutter's Mill

JUNE 10, 2010

I forgot to blog about this until now because of focusing on the Effective Concurrency course in Stockholm a few weeks ago, but to answer those who wonder if I’ll be giving it again in North America too: Yes, I’m also giving the public Effective Concurrency course again at the end of this month at the Construx facility in Bellevue, WA, USA.

Best Practices 40

Best Practices Scalability Cache Architecture 40

Dynatrace

JUNE 16, 2020

Spotty monitoring coverage makes it hard to identify, analyze, and resolve performance problems, which can endanger key business transactions and impact users. In that way, you could try to cache requests so that not every request hits the mainframe.

Innovation 152

Innovation Metrics Infrastructure Programming 152

Smashing Magazine

MARCH 19, 2021

Working around improving performance was an ongoing journey on SmashingMag for a while. In the end of last year we’ve noticed that we’ve seen quite a drop in performance in 2020, so we rolled up our sleeves and got to work. Gael Metais suggested to more aggressively subset web fonts and look into caching issues with our AVIF files.

Mobile 140

Mobile Design Cache Code 140

Brendan Gregg

APRIL 14, 2022

On the Netflix Java/Linux/EC2 stack there were no working mixed-mode flame graphs, no production safe dynamic tracer, and no PMCs: All tools I used extensively for advanced performance analysis. Apart from developing tools, much of my time has been spent helping teams with performance issues and evaluations. How would I do my job?

Java 52

Java Cache Cloud AWS 52

Speed Curve

JUNE 14, 2021

I’m delighted to be joining some of my favourite web performance people at SpeedCurve! I’ve been a full-time web performance consultant for around nine years. I’ve written a couple of books , spoken at conferences , and become an organiser of London’s Web Performance Meetup.

Retail 52

Retail Internet Internet Education 52

The Morning Paper

FEBRUARY 23, 2020

Caching of query results on the other hand, looks like a good business model, at large enough scale these might amount to pretty much the same thing). Contractors can organise into contractor groups to collectively satisfy more stringent performance and fault-tolerance guarantees than any one contractor may be able to do on their own.

Blockchain 94

Blockchain Internet Internet IoT 94

Smashing Magazine

SEPTEMBER 20, 2021

And of course, scrapers could scrape your site to look for security vulnerabilities or exposed contact or sales lead details. Even if none of the page content is delivered from your platform or servers, so long as the JavaScript code you are using for analytics or performance tracking loads, you can still get data about the page view.

Website 89

Website Analytics Google Cache 89

The Morning Paper

JUNE 16, 2019

The challenging thing of course, is efficiently maintaining all of these parallel universes. For good query performance we’d like to pre-compute these per-user universes. It therefore requires partially-materialized views that support high-performance updates. Expressing privacy policies.

Database 90

Database Cache Benchmarking Efficiency 90

Randon ASCII

SEPTEMBER 8, 2019

The fact that this shows up as CPU time suggests that the reads were all hitting in the system cache and the CPU time was the kernel overhead (note ntoskrnl.exe on the first sampled call stack) of grabbing data from the cache. This means that there is no caching between RuntimeBroker.exe and this file.

Latency 79

Latency Cache Programming Operating System 79

MachMetrics

FEBRUARY 27, 2020

While PageSpeed Insights focuses solely on speed/performance, Lighthouse offers even more. It offers audits for best practices, accessibility, progressive web apps, SEO and of course, performance. Within a minute, Lighthouse will create a full report across the various tests that you had it perform. Performance.

Google 82

Google Speed Testing Tools Testing 82

The Morning Paper

DECEMBER 1, 2019

Memory might be durable, but… …it is expected that caches and registers will remain volatile. Moreover, for better performance, the processor may change the order in which writes reach the NVRAM, making it difficult for the NVRAM to even reflect a consistent prefix of the computation. Performance evaluation.

Efficiency 60

Efficiency Cache C++ Performance 60

SQL Performance

OCTOBER 20, 2022

Rows qualifying for the update must continue to qualify until the change is performed and committed. Using lock classes is better for resource usage, concurrency, and performance than internally escalating to repeatable read would be. This is true, of course, but there’s a bit more to say. Reading data.

Testing 91

Testing Servers Cache Engineering 91

Smashing Magazine

FEBRUARY 27, 2024

With performance at the forefront of my mind, I decided to head over to MDN for a fresh look at the Performance API. The Performance API is huge in that it contains a lot of different interfaces, properties, and methods. The element performance metric type doesn’t work with the performance.getEntries() method anyway.

Performance 95

Performance Metrics Monitoring Google 95

MachMetrics

JUNE 1, 2020

If you’re unsure of how your website performs on a mobile device (or even got a poor result on a speed audit), stick with us. Measure Your Mobile Performance. Of course not. That is why we need to test our performance at those speeds. Improving Your Mobile Performance.

Speed 67

Speed Mobile Testing Google 67

Percona

MARCH 23, 2023

This blog is in reference to our previous ones for ‘Innodb Performance Optimizations Basics’ 2007 and 2013. Although there have been many blogs about adjusting MySQL variables for better performance since then, I think this topic deserves a blog update since the last update was a decade ago, and MySQL 5.7

Performance 125

Performance Hardware Tuning Storage 125

KeyCDN

SEPTEMBER 12, 2019

We normally focus solely on the performance aspect, but today we want to dive into additional ways you can optimize images for the web. The file size of your images of course is very important, but SEO and social media also play an important part in helping your website perform and convert better.

Social Media 106

Social Media Media Google Website 106

The Morning Paper

OCTOBER 6, 2019

Model performance is not the same as business performance. Lesson 2: model performance is not the same as business performance. An interesting finding is that increasing the performance of a model does not necessarily translate into a gain in [business] value. Be clear about the problem you’re trying to solve.

Latency 102

Latency Metrics Cache Design 102

Brendan Gregg

MARCH 16, 2024

I'm sure this delivered large performance improvements and I wouldn't try arguing against it. 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.

Java 145

Java Cache Google Hardware 145

ACM Sigarch

FEBRUARY 23, 2018

Architects were always aware of the impact speculative execution has on the performance of microarchitectural structures from branch predictors to caches. I recall heated discussions 20+ years ago on whether speculative data in caches improves or degrades cache performance.

Architecture 47

Architecture Cache Hardware Virtualization 47

Randon ASCII

OCTOBER 15, 2018

And, of course, this post will also cover how to detect and avoid this problem. A long-standing correctness bug in the Windows file cache: Compiler bug? A performance glitch if you misuse file notifications: Making Windows Slower Part 1: File Access. This is a CPU bound problem because all of the relevant disk data is cached.

Processing 57

Processing Cache Programming Virtualization 57

Tim Kadlec

OCTOBER 17, 2010

Performance optimization is the Rodney Dangerfield of web development–it “don’t get no respect” In spite of its great importance in the overall user experience, it is all too often pushed aside and treated as an afterthought. Performance optimization isn’t that necessary. Performance matters.

Performance 40

Performance Energy Google Internet 40

Smashing Magazine

AUGUST 30, 2021

Refactoring CSS: Optimizing Size And Performance (Part 3). Refactoring CSS: Optimizing Size And Performance (Part 3). Deploying the refactored codebase shouldn’t result in worse website performance and worse user experience. Part 3: Optimizing Size And Performance. Adrian Bece. 2021-08-30T10:00:00+00:00. More after jump!

Media 108

Media Performance Cache Strategy 108

MachMetrics

JULY 31, 2020

As we discussed in our article on how to test your page weight , compression is pretty much standard practice in web performance now, so you absolutely want to make sure you’re taking advantage of it. Many caching plugins like WPRocket also offer Gzip compression right out of the box. How Do I Implement Brotli?

Speed 67

Speed Servers Google Tuning 67

Smashing Magazine

JUNE 30, 2021

The Problem Of Unpredictable Performance. At the same time, we have a widening performance gap. In terms for performance, these phones have plateaued at the performance of a 2012 iPhone. Applications built for the Web are expected to run on devices that fall anywhere on this broad performance spectrum.

Games 145

Games Architecture Code C++ 145

SQL Performance

SEPTEMBER 25, 2019

Performance spools are lazy spools added by the optimizer to reduce the estimated cost of the inner side of nested loops joins. An example plan shape showing a lazy table performance spool is below: The questions I set out to answer in this article are why, how, and when the query optimizer introduces each type of performance spool.

Performance 104

Performance Cache Servers Education 104

Percona

APRIL 24, 2023

Indexes are generally considered to be the panacea when it comes to SQL performance tuning, and PostgreSQL supports different types of indexes catering to different use cases. The benefits come with a cost in terms of performance and resource consumption. The more indexes, the more the requirement of memory for effective caching.

Tuning 126

Tuning Cache Storage Database 126

Percona

JUNE 4, 2023

Critical features of MariaDB include robust security features like encryption at rest and in transit, user authentication, and role-based access control (RBAC), as well as high-performance query execution, advanced indexing techniques, and replication, clustering, and sharding, ensuring scalability and high availability. What is MySQL?

Open Source 52

Open Source Servers Storage Scalability 52

The Symphonia

JANUARY 21, 2019

We even put CI/CD front and center in our training courses ?—?we You can use various different sizes of build host (small, medium, large); you can use one of the predefined images as your build environment, or you can define your own docker image to use; and you can, if you want, cache data across build runs.

AWS 40

AWS Open Source Lambda Serverless 40

The Morning Paper

APRIL 11, 2019

In addition, service workers have the ability to intercept and handle network requests (for e.g., caching and pre-loading purposes). There is no low-level networking access, but HTTP request methods and the HTTP body can of course be controlled. No user permission is required to register and maintain a service worker.

Website 44

Website Network Traffic Cache 44

Percona

MAY 10, 2023

I have seen many Linux Performance engineers looking at the “IOWait” portion of CPU usage as something to indicate whenever the system is I/O-bound. In reality, though, of course, nothing changed for our first workload — it continues to be I/O-bound; it just became invisible when we look at “IOWait”!

Cache 143

Cache Monitoring Open Source Processing 143