Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map. runqlat CPU scheduler latency heat map. Once you have this all working, you have version 1! ## Case study: Netflix Netflix is building a new GUI that does this tool dashboard and more, based on the bpftrace versions of these tools. opensnoop Files opened table.

Latency 144

Latency Cache Energy Systems 144

All Things Distributed

OCTOBER 25, 2018

The new AWS Africa (Cape Town) Region will have three Availability Zones and provide lower latency to end users across Sub-Saharan Africa. For more information about our activities in South Africa, including webinars, meetups, customer case studies, and more, see the AWS Africa page.

AWS 167

AWS Cloud Education Programming 167

O'Reilly

FEBRUARY 18, 2025

A Case Study in Misleading AI Advice An example of this disconnect in action comes from an interview with Jake Heller, CEO of Casetext. Were experiencing high latency in responses. Distillation Making a smaller, faster model from a big one It lets you use cheaper, faster models with less delay (latency).

Latency 66

Latency Tuning Metrics Testing 66

Scalegrid

AUGUST 27, 2024

RabbitMQ excels at managing asynchronous processing and reducing latency while distributing workloads effectively across the system. By prioritizing such messages, RabbitMQ delivers notifications with minimal latency, thus improving the user experience while sustaining the efficacy of communication systems. RabbitMQ in Action.

IoT 130

IoT Ecommerce Games Scalability 130

O'Reilly

MARCH 25, 2025

At its core, this case study demonstrates evaluation-driven development in action. By the end, youll see how this team escaped POC purgatorynot by chasing the perfect model, but by adopting a structured development cycle that turned a promising demo into a real product. Youre not launching a product: Youre launching a hypothesis.

Systems 69

Systems Development Tuning Monitoring 69

Speed Curve

MARCH 11, 2024

What you need to know about INP on mobile devices How to debug and optimize INP And at the bottom of this post, we'll wrap thing up with some inspiring case studies from companies that have found that improving INP has improved sales, pageviews, and bounce rate. One of the biggest culprits: latency, which is typically worse on mobile.

Mobile 88

Mobile Google Metrics Monitoring 88

The Netflix TechBlog

NOVEMBER 22, 2019

Netflix runs dozens of stateful services on AWS under strict sub-millisecond tail-latency requirements, which brings unique challenges. We showcase our case studies, open-source tools in benchmarking, and how we ensure that AWS cloud services are serving our needs without compromising on tail latencies.

AWS 100

AWS Entertainment Open Source Benchmarking 100

The Netflix TechBlog

NOVEMBER 22, 2019

Netflix runs dozens of stateful services on AWS under strict sub-millisecond tail-latency requirements, which brings unique challenges. We showcase our case studies, open-source tools in benchmarking, and how we ensure that AWS cloud services are serving our needs without compromising on tail latencies.

AWS 100

AWS Entertainment Open Source Benchmarking 100

All Things Distributed

JULY 11, 2011

As a part of that process, we also realized that there were a number of latency sensitive or location specific use cases like Hadoop, HPC, and testing that would be ideal for Spot. However, customers with these use cases need a way to more easily and reliably target Availability Zones.

AWS 69

AWS Storage Cloud Big Data 69

All Things Distributed

SEPTEMBER 25, 2017

This Region will consist of three Availability Zones at launch, and it will provide even lower latency to users across the Middle East. For more information on our activities in the Middle East, including webinars, meetups, customer case studies, and more, please visit the AWS Middle East page at [link].

Cloud 117

Cloud Education Energy Government 117

Brendan Gregg

AUGUST 29, 2021

This is a rough post to share this old but good case study of using these tools, and to help justify their further development. biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. I'm running it in case the averages are hiding outliers, which could be a device issue: # /usr/share/bcc/tools/biolatency -m.

Cache 78

Cache C++ AWS Java 78

Speed Curve

MAY 1, 2023

According to the Chrome dev team : "INP is a metric that aims to represent a page's overall interaction latency by selecting one of the single longest interactions that occur when a user visits a page. INP logs the latency of all interactions throughout the entire page lifecycle. Let's get started! What is a performance budget?

Performance 98

Performance Metrics Media Google 98

The Morning Paper

JANUARY 26, 2020

If the server-side responder is also being replayed, then Reverb inserts a new request into the server-side log… When the response is generated, Reverb buffers it and uses a model of network latency to determine where to inject the response into the client-side log. KB (95%-ile size 113.2 KB), and it takes 7.8

Programming 86

Programming Servers Network Latency 86

Brendan Gregg

OCTOBER 8, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Back then I could already tell if disks were seeking by interpreting iostat(1) output: seeing high disk latency but small I/O.

C++ 105

C++ Virtualization Programming Latency 105

Speed Curve

FEBRUARY 5, 2024

Latency – How much time does it take to deliver a packet from A to B. Recent server timing case studies It's great to see server timing starting to get more use in the wild. Today, it's possible to add these headers from your CDN with ease, if they aren't already set up out of the box. Definitely worth a read!

Servers 64

Servers Cache Retail Benchmarking 64

O'Reilly

NOVEMBER 12, 2019

That makes sense: with serverless being relatively young, formal training is difficult to find, specific documentation must be generated, and case studies to learn from—while growing—are harder to come by. latency, startup, mocking, etc.) “Educating current staff” was the No. changing the integration landscape—at least for now.

Serverless 94

Serverless Architecture FinTech Infrastructure 94

The Morning Paper

SEPTEMBER 8, 2019

Five queries improve substantially on both latency and total compute hours. Such case studies lead us to strongly believe that the batched log analytics jobs that are prevalent in production big-data clusters can benefit substantially from query-time sampling. 8 out of the 22 TPC-H queries cannot be advantaged by sampling.

Big Data 57

Big Data Analytics Latency Azure 57

Smashing Magazine

AUGUST 3, 2023

Each stage has its unique challenges and potential pitfalls, as other case studies show. While dynamic serving provides simplicity in implementation, it imposes significant time costs due to the computational resources required to generate the pages and the latency involved in serving these pages to users at distant locations.

Performance 78

Performance Cache Traffic Metrics 78

Smashing Magazine

AUGUST 20, 2021

Platforms such as Snipcart , CommerceLayer , headless Shopify , and Stripe enable you to manage products in a friendly UI while taking advantage of the benefits of Jamstack: Amazon’s famous study reported that for every 100ms in latency, they lose 1% of sales. For the more complex enterprise use cases, we have fewer examples.

Ecommerce 142

Ecommerce Website Government Internet 142

Smashing Magazine

AUGUST 15, 2023

Large preview ) While browsers are generally pretty fast, these steps still take time to load, typically in seconds, and even longer on slower, high-latency network connections. Homepage of a default Drupal site using the Umami theme. And because this image is within the initial viewport, it’s very noticeable.

Media 77

Media Metrics Mobile Best Practices 77

Rigor

DECEMBER 19, 2019

For example, in a case study published by Gilt Groupe , Eric Shepherd, who was formerly Gilt’s principal front end engineer, noted that: Both RUM and synthetic monitoring give different views of our performance, and are useful for different things. They each bring different – and complementary – information to the table.

Monitoring 40

Monitoring Benchmarking Website Traffic 40

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map 5. runqlat CPU scheduler latency heat map 10. In the end, they are both good options. ## Case study: Netflix Netflix is building a new GUI that does this tool dashboard and more, based on the bpftrace versions of these tools. execsnoop New processes (via exec(2)) table 2.

Open Source 40

Open Source Latency Cache Energy 40

Brendan Gregg

AUGUST 29, 2021

This is a rough post to share this old but good case study of using these tools, and to help justify their further development. biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. I hope this case study helps show why it is useful and worth the effort. Mostly screenshots. ## 1.

Cache 40

Cache C++ AWS Systems 40

CSS - Tricks

NOVEMBER 1, 2019

Please, calculate your losses in case 1% of users leave immediately and never came back because of bad performance. It’s a list of case studies from real companies and their success after improving performance. Latency matters. If users aren’t happy, business will be unhappy, too. JAMstack helps improve web performance.

Speed 48

Speed Mobile Metrics Scalability 48

Brendan Gregg

OCTOBER 7, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Back then I could already tell if disks were seeking by interpreting iostat(1) output: seeing high disk latency but small I/O.

C++ 40

C++ Virtualization Programming Latency 40

Percona

JULY 1, 2023

It efficiently manages read and write operations, optimizes data access, and minimizes contention, resulting in high throughput and low latency to ensure that applications perform at their best. View the full results of the case study here. In Summary: Should I Use Aurora or RDS?

AWS 52

AWS Database Serverless Storage 52

Smashing Magazine

MARCH 25, 2021

WPOStats highlights literally hundreds of case studies showing how a drop in perfrmance — from a few hundreds of milliseconds to seconds — might result in a massive drop in annual sales. CDNs can alleviate last-mile latency, shorten a video’s start time, and potentially reduce buffering issues. Deliver through multiple CDNs.

Media 122

Media Performance Mobile Latency 122

KeyCDN

JULY 11, 2019

Using an image CDN, such as KeyCDN, can significantly reduce the latency of your image delivery. The main reason is because it decreases the latency to the user where they are located by serving your images from a POP physically closest to them. This allows your images to be delivered much faster all around the world.

Speed 52

Speed Website Mobile Latency 52

Smashing Magazine

JANUARY 7, 2019

You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Study common complaints coming into customer service and see how improving performance can help relieve some of these common problems. How to get there?

Performance 111

Performance Cache Network Metrics 111

Smashing Magazine

JANUARY 6, 2020

You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. It will help you build up a company-tailored case study with real data. How to get there?

Performance 112

Performance Cache Servers Network 112

Smashing Magazine

JANUARY 11, 2021

You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. It will help you build up a company-tailored case study with real data. How to get there?

Performance 145

Performance Cache Metrics Media 145