Brendan Gregg

FEBRUARY 28, 2023

At USENIX SREcon22 APAC I gave the opening keynote on the future of computer performance, rounding up the latest developments and making predictions of where I see things heading. This talk originated from my updates to Systems Performance 2nd Edition , and this was the first time I've given this talk in person!

Performance 52

Performance Latency Cache Virtualization 52

Jos

JUNE 2, 2018

Web Performance is not only about understanding what makes a site fast. Performance is a feature and needs to be prioritized as such. Performance is a topic that has interested me for a long time. Moving over to web, the performance problems are different. These days we have more and better tools to audit our performance.

Performance 130

Performance Speed Google Media 130

Percona

JUNE 4, 2023

In this blog, we’ll provide a comparison between MariaDB vs. MySQL (including Percona Server for MySQL ). Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process. Contact us to learn more!

Open Source 52

Open Source Servers Storage Scalability 52

Rigor

SEPTEMBER 11, 2019

Reading time 16 min Whether you’re a web performance expert, an evangelist for the culture of performance, a web engineer incorporating performance into your process, or someone new to the web performance entirely, you probably identify as curious, excited about new ideas, and always learning. Rick Byers.

Performance 89

Performance Education Google Website 89

SQL Server According to Bob

JANUARY 5, 2017

Last March I moved from 22 years in SQL Server support to the SQL Server development team, working on SQL Server on Linux project and reporting to Slava Oks. As Slava highlights in his recent blog post , he also contacted me in early 2015 to assist with supportability of SQL Server on Linux.

Servers 40

Servers Operating System C++ Software Engineering 40

MachMetrics

JULY 31, 2020

Simply put, compression allows the web server to send smaller files to your web site viewers. When someone enters your URL and requests your site, their browser will indicate to the web server that it understands compression (and which type it understands). In 2015, they released a version to be used for HTTP compression.

Speed 67

Speed Servers Google Tuning 67

Brendan Gregg

JULY 2, 2021

I chose these to find the most performance wins with the fewest tools. The architecture is: While the bpftrace binary is installed on all the target systems, the bpftrace tools (text files) live on a web server and are pushed out when needed. execsnoop New processes (via exec(2)) table. opensnoop Files opened table.

Latency 145

Latency Cache Energy Systems 145

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. When Data Saver mode is enabled, Chrome will attempt to make optimizations to the page to reduce data usage and improve overall performance. This is the big one.

Google 63

Google Traffic Cache Servers 63

Brendan Gregg

JULY 2, 2021

I chose these to find the most performance wins with the fewest tools. The architecture is: While the bpftrace binary is installed on all the target systems, the bpftrace tools (text files) live on a web server and are pushed out when needed. execsnoop New processes (via exec(2)) table 2. opensnoop Files opened table 3.

Open Source 40

Open Source Latency Cache Energy 40

The Morning Paper

FEBRUARY 11, 2020

Since it’s launch in December 2015, Let’s Encrypt has steadily grown to become the largest CA in the Web PKI by certificates issued and the fourth largest known CA by Firefox Beta TLS full handshakes. In a model for others to follow, the Caddy web server will automatically provision Let’s Encrypt certificates.

Internet 119

Internet Internet Open Source Transportation 119

Brendan Gregg

MARCH 16, 2024

I'm sure this delivered large performance improvements and I wouldn't try arguing against it. While that Java change led to discovering countless performance wins in application code, libc was still breaking some portion of the samples (as pictured in the example at the top of this post) and preventing off-CPU flame graphs.

Java 145

Java Cache Google Hardware 145

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you _time_ time?

Speed 126

Speed Java AWS Virtualization 126

SQL Performance

JULY 24, 2022

SQL Server 2012 went out of all forms of official support about two weeks ago, on July 12 th. Best approaches for running totals – updated for SQL Server 2012. In the very first post on this site, I compared the performance of long-standing running totals methods with the new windowing functions added in SQL Server 2012.

Servers 66

Servers Strategy Availability Processing 66

Dynatrace

APRIL 5, 2021

Azure is a large and growing cloud computing ecosystem that empowers its users to access databases, launch virtual servers, create websites or mobile applications, run a Kubernetes cluster, and train machine learning models, to name a few examples. The growth of Azure cloud computing. Making the best use of Azure Functions.

Azure 136

Azure Serverless IoT Lambda 136

SQL Performance

OCTOBER 14, 2020

I explained that when SQL Server optimizes a query involving derived tables, it applies transformation rules to the initial tree of logical operators produced by the parser, possibly shifting things around across what were originally table expression boundaries. Substitution/unnesting. Figure 4: Execution plan for Query 4.

C++ 140

C++ Servers Code Efficiency 140

Alex Russell

MARCH 6, 2021

Back in 2016, I gave a talk outlining the causes and effects of the terrible performance of web apps built using popular tools on the fastest-growing device segment: low-end to mid-range Android phones. Poor performance has a compound effect on user expectations at an ecosystem level. Live by the link, die by the link.

Performance 124

Performance Network Cache Metrics 124

Dynatrace

DECEMBER 22, 2021

With observability, teams can understand what part of a system is performing poorly and how to correct the problem. Traces provide performance data about tasks that are performed by invoking a series of services. But by 2015, it was more common to split up monolithic applications into distributed systems.

Artificial Intelligence 172

Artificial Intelligence Metrics Architecture DevOps 172

SQL Performance

JULY 16, 2019

A close monitoring of the hardware enthusiast community, including many of the most respected hardware analysts and reviewers paints an even more dire picture about Intel in the server processor space. Despite all of this, Intel is not going to lose their entire server processor business any time soon. So, what has changed my mind?

Servers 46

Servers Hardware Architecture Retail 46

SQL Performance

APRIL 8, 2020

As Grant repeatedly points out, many who use common table expressions in T-SQL think that SQL Server persists the inner query result set, and that the reason for this belief is the use of the term table in the construct's name. Date (O'Reilly 2015). Many people do.

C++ 143

C++ Database Azure Servers 143

Percona

JANUARY 17, 2019

In this article, we will look at how this can improve the reporting/analytical query performance in MySQL. I will compare AWS Aurora with MySQL (Percona Server) 5.6 84.1 | | version_comment | Percona Server (GPL), Release 84.1, Result: ~10x performance gain, no index used.

Cache 46

Cache C++ AWS Airlines 46

Enprowess

MAY 24, 2022

This functionality gives an edge to Reactjs by increasing performance and decreasing programming time compared to another mobile app development platform. Reactjs has the capability of server-side rendering, which offers a power boost to the SEO of a web page or an application and helps in fetching more organic traffic. React Native.

Mobile 52

Mobile Open Source Virtualization Speed 52

CSS - Tricks

JUNE 5, 2020

In 2015, Google published a blog post announcing Brotli and released its source code on GitHub. At that time, I was working as a freelance website performance consultant. It took a few months for major CDN players to support Brotli, but meanwhile it was seeing widespread adoption in tools, services, browsers and servers.

Cache 79

Cache Website Servers Open Source 79

SQL Performance

OCTOBER 14, 2020

I explained that when SQL Server optimizes a query involving derived tables, it applies transformation rules to the initial tree of logical operators produced by the parser, possibly shifting things around across what were originally table expression boundaries. Substitution/unnesting. Figure 4: Execution plan for Query 4.

C++ 52

C++ Servers Code Efficiency 52

All Things Distributed

DECEMBER 13, 2016

In November 2015, Amazon Web Services announced that it would launch a new AWS infrastructure region in the United Kingdom. Real-time monitoring and evaluation of events have led to a positive impact on performance or operations. Channel 4 (in the UK) chose AWS to help monetize volumes of platform data.

AWS 166

AWS Cloud Artificial Intelligence IoT 166

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you _time_ time?

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

AUGUST 9, 2021

Often they make it seem as if HTTP/3 is a revolution in performance, while it is really a more modest (yet still useful!) It was heralded as an amazing performance revolution, with exciting new features such as server push, parallel streams, and prioritization. HTTP/3 performance features ( coming up soon! ).

Transportation 145

Transportation Internet Internet Network 145

Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance.

Virtualization 111

Virtualization AWS Hardware Storage 111

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you time time?

Speed 52

Speed Java AWS Virtualization 52

SQL Server According to Bob

JUNE 3, 2016

SQL Server 2016 ‘It Just Runs Faster’ A bold statement that any SQL Server professional can stand behind with confidence. Try SQL Server 2016 Today. The SQL Server Development team tasked several individuals with scalability improvements and real world testing patterns. – [link]. Follow-up.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

Testsigma

JUNE 5, 2021

In 2015, 35% of the internet traffic came from mobile devices, 6 years later, the number is 54.8%. How to perform automated mobile browser testing? The execution of these automated mobile browser tests can be performed in multiple ways – via emulators, simulators or buying an actual device to test. Source: Shopify.

Mobile 52

Mobile Testing Website Testing Tools 52

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance.

Virtualization 40

Virtualization AWS Hardware Storage 40

Randon ASCII

FEBRUARY 25, 2018

Either way, whether we fixed two or three separate bugs, Chrome’s builds are much more reliable now and I can go back to doing build-performance testing without hitting failures. 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.

Programming 79

Programming Hardware Cache Code 79

Brendan Gregg

AUGUST 8, 2017

If they are higher than your CPU count, then you might have a performance problem (it depends). Thankfully, I found some older linux-devel mailing list archives, rescued from server backups, often stored as tarballs of digests. It's time in some cgroup paths, but this server is not doing much disk I/O. to the load average.

Latency 111

Latency Metrics C++ Systems 111

Enprowess

JANUARY 12, 2022

Internet of things (IoT) – Number of IoT devices 2015-2025 Statista. Supports multitasking : voice search technology can simultaneously perform multiple tasks from navigation to setting up meetings and reminders. According to a Statista report, it is forecasted that worldwide spending on IoT by 2023 will reach 1.1 Smart cities.

Blockchain 59

Blockchain IoT Development Serverless 59

Smashing Magazine

JANUARY 11, 2021

Front-End Performance Checklist 2021. Front-End Performance Checklist 2021. This guide has been kindly supported by our friends at LogRocket , a service that combines frontend performance monitoring , session replay, and product analytics to help you build better customer experiences. Web performance is a tricky beast, isn’t it?

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 145

Performance Cache Network Metrics 145

CSS - Tricks

OCTOBER 10, 2019

WebPageTest is an online tool and an Open Source project to help developers audit the performance of their websites. As a Web Performance Evangelist at Theodo , I use it every single day. I am constantly amazed at what it offers to the web development community at large and the web performance folks particularly — for free.

Performance Testing 51

Performance Testing Testing Performance Open Source 51