Brendan Gregg

FEBRUARY 28, 2023

The video is now on YouTube : The slides are online and as a PDF : first prev next last / permalink/zoom In Q&A I was asked about CXL (compute express link) which was fortunate as I had planned to cover it and then forgot, so the question let me talk about it (although Q&A is missing from the video). Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

Dotcom-Montior

DECEMBER 8, 2021

Now that we have talked about what an incident is, incident management is the process by which teams resolve these events and bring systems and services back to normal operation. ITSM is the policies, processes, and structure behind the lifecycle of IT services. Incident Management Lifecyle: Process and Steps. Service Desk.

Social Media 90

Social Media Monitoring Latency DevOps 90

Dynatrace

JUNE 1, 2023

In today’s fast-paced digital landscape, ensuring high-quality software is crucial for organizations to thrive. Service level objectives (SLOs) provide a powerful framework for measuring and maintaining software performance, reliability, and user satisfaction. But the pressure on CIOs to innovate faster comes at a cost.

Latency 177

Latency Website Traffic Virtualization 177

Dynatrace

JUNE 1, 2023

In today’s fast-paced digital landscape, ensuring high-quality software is crucial for organizations to thrive. Service level objectives (SLOs) provide a powerful framework for measuring and maintaining software performance, reliability, and user satisfaction. But the pressure on CIOs to innovate faster comes at a cost.

Traffic 173

Traffic Latency Website Virtualization 173

The Netflix TechBlog

JULY 12, 2019

delivering a large amount of business value in the process. Gatekeeper is the system at Netflix responsible for evaluating the “liveness” of videos and assets on the site. When a change for a video occurred in any one of its upstream systems, that system would send an event to Gatekeeper.

Cache 183

Cache Architecture Latency Engineering 183

The Netflix TechBlog

MARCH 1, 2021

It supports both high throughput services that consume hundreds of thousands of CPUs at a time, and latency-sensitive workloads where humans are waiting for the results of a computation. In the diagram below of a typical Cosmos service, clients send requests to a Video encoder service API layer. debian packages).

Serverless 228

Serverless Media Latency Social Media 228

IO River

NOVEMBER 2, 2023

Now, with viewers all over the world expecting flawless and high-definition streaming, video providers have their work cut out for them. What Comprises Video Streaming - Traffic CharacteristicsWith the emphasis on a high-quality streaming experience, the optimization starts from the very core. Those days are long gone.

Architecture 52

Architecture Performance Internet Internet 52

IO River

NOVEMBER 2, 2023

Now, with viewers all over the world expecting flawless and high-definition streaming, video providers have their work cut out for them. ‍What Comprises Video Streaming - Traffic CharacteristicsWith the emphasis on a high-quality streaming experience, the optimization starts from the very core. Those days are long gone.

Architecture 52

Architecture Performance Internet Internet 52

The Netflix TechBlog

JUNE 13, 2023

Replay traffic testing gives us the initial foundation of validation, but as our migration process unfolds, we are met with the need for a carefully controlled migration process. A process that doesn’t just minimize risk, but also facilitates a continuous evaluation of the rollout’s impact.

Traffic 279

Traffic Metrics Systems Strategy 279

Smashing Magazine

SEPTEMBER 28, 2022

Every unnecessary bit of JavaScript code you bundle and serve will be more code the client has to load and process. Developing software is becoming easier as frameworks like React, Vue, or Angular become the go-to solution for creating even the simplest applications. The rule of thumb is the less, the better. More after jump!

Cache 126

Cache Performance Servers Social Media 126

The Netflix TechBlog

SEPTEMBER 2, 2020

When a problem occurs, we put on our detective hats and start our mystery-solving process by gathering evidence. Distributed tracing is the process of generating, transporting, storing, and retrieving traces in a distributed system. For engineers, instead of whodunit, the question is often “what failed and why?”

Latency 296

Latency Transportation Engineering Traffic 296

Dynatrace

JANUARY 26, 2021

REST APIs, authentication, databases, email, and video processing all have a home on serverless platforms. The Serverless Process. When an application is triggered, it can cause latency as the application starts. The average request is handled, processed, and returned quickly. Services scale to meet demand.

Serverless 244

Serverless Efficiency Lambda Azure 244

The Netflix TechBlog

MAY 14, 2021

We are expected to process 1,000 watermarks for a single distribution in a minute, with non-linear latency growth as the number of watermarks increases. The goal is to process these documents as fast as possible and reliably deliver them to recipients while offering strong observability to both our users and internal teams.

Traffic 160

Traffic Latency Java Google 160

The Netflix TechBlog

APRIL 26, 2022

Figure 1: Netflix ML Architecture Fact: A fact is data about our members or videos. An example of data about members is the video they had watched or added to their My List. An example of video data is video metadata, like the length of a video. Time is a critical component of Axion?—?When

Storage 187

Storage Design Scalability Latency 187

Alex Russell

APRIL 29, 2021

Next-generation video codecs, supported in many modern chips, but also a licensing minefield. Necessary for building competitive video experiences, including messaging and videoconferencing. Fundamentally enabling for video creation apps. Without it, video recordings must fit in memory, leading to crashes. getUserMedia().

Media 145

Media Games Education Engineering 145

Smashing Magazine

AUGUST 22, 2021

Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server). Two-way latency is often called round-trip time (RTT).

Performance 106

Performance Network Latency Servers 106

The Netflix TechBlog

FEBRUARY 9, 2021

by Eric Eiswerth Background Netflix has been offering streaming video-on-demand (SVOD) for over 10 years. Introduction and account creation Highlight our value propositions and begin the account creation process. Given the flow and mode, the Orchestration Service can then process the request. The world is constantly changing.

Engineering 142

Engineering Scalability Architecture Innovation 142

The Morning Paper

JULY 4, 2019

Two failure modes we focus on are a service becoming slower (increase in response latency) or a service failing outright (returning errors). An example hypotheses to be tested is that users should still be able to stream video even if the bookmarking service (which remembers their last watched location in a video) is down.

Latency 77

Latency Engineering Metrics Traffic 77

The Netflix TechBlog

MARCH 13, 2020

Compared to the most recent master version of libaom (AV1 reference software), SVT-AV1 is similar in compression efficiency and at the same time achieves significantly lower encoding latency on multi-core platforms when using its inherent parallelization capabilities.

Open Source 154

Open Source Efficiency C++ Speed 154

Dotcom-Montior

MAY 12, 2020

A request will be sent from the client-side and an HTTP check waits on the server port to get the message, process it, and then send back the response. Network latency. Processing and generating the response. Network Latency. Network latency can be affected due to. Software that’s running. Wi-Fi usage.

Monitoring 63

Monitoring Entertainment Hardware Latency 63

All Things Distributed

MARCH 11, 2016

Almost from day one, we knew that the software we were building would not be the software that would be running a year later. We needed to build such an architecture that we could introduce new software components without taking the service down. Build evolvable systems. Automation is key. The importance of the network.

AWS 144

AWS Hardware Retail Virtualization 144

All Things Distributed

OCTOBER 12, 2016

Three years ago, as part of our AWS Fast Data journey we introduced Amazon ElastiCache for Redis , a fully managed in-memory data store that operates at sub-millisecond latency. This allows for faster failover times while minimizing latency. Building upon Redis. Redis and Fast Data.

Scalability 130

Scalability Analytics Cache AWS 130

Percona

APRIL 17, 2023

The CFQ works well for many general use cases but lacks latency guarantees. The deadline excels at latency-sensitive use cases ( like databases ), and noop is closer to no schedule at all. 25.84 - Total 21.04 zone_reclaim_mode In some OS versions, the vm.zone_reclaim_mode is enabled. 25.84 - Total 21.04

Best Practices 52

Best Practices Design Tuning Database 52

Smashing Magazine

AUGUST 20, 2021

Fast-forward 30 years, and website technology has changed significantly — we have images, stylesheets, JavaScript, streaming video, AJAX, animation, WebSockets, WebGL, rounded corners in CSS — the list goes on. While developers are an essential part of the Jamstack, they’re often heavily involved in the content publishing process.

Ecommerce 139

Ecommerce Website Government Internet 139

Alex Russell

JUNE 20, 2020

Suz Hinton's talks on WebUSB show the through-line: as the web gets more capable, whole classes of software suddenly benefit from frictionless deployment, increased safety, better privacy, and more meaningful user controls. After all, those are properties that browsers compete on, benefiting users in the process. floppy/CD/DVD).

Hardware 55

Hardware Games Java Media 55

Sutter's Mill

JUNE 21, 2012

One of the slides I omitted to shorten this version of the talk highlighted that there are actually two issues when you go from “Disjoint (tightly coupled)” to “Disjoint (loosely coupled)”: reliability and latency , and both are important. (I an elastic set of compute nodes, each of which pulls work items from the queue and processes them.

Latency 40

Latency Transportation Hardware Education 40

All Things Distributed

OCTOBER 2, 2017

Performant – DynamoDB consistently delivers single-digit millisecond latencies even as your traffic volume increases. DynamoDB automatically re-distributes your data to healthy servers to ensure there are always multiple replicas of your data without you needing to intervene.

Internet 128

Internet Internet AWS Performance 128

Dotcom-Montior

MARCH 6, 2022

It assists in identifying where important events happened during the loading process. Waterfall charts within the Dotcom-Monitor platform can help users identify where important events happened during the page load process. Users can also watch the actual URL loading video in the browser window.

Performance 52

Performance Cache Website Speed 52

Brendan Gregg

SEPTEMBER 5, 2017

There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). You might also like my [Give me 15 minutes and I'll change your view of Linux tracing] video as an introduction to the different built-in Linux tracers.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Dotcom-Montior

MAY 6, 2020

It assists in identifying where important events happened during the loading process. Waterfall charts within the Dotcom-Monitor platform can help users identify where important events happened during the page load process. Users can also watch the actual URL loading video in the browser window.

Performance 53

Performance Cache Website Speed 53

Enprowess

SEPTEMBER 7, 2021

According to the latest Stackoverflow developer survey , JavaScript is a well-liked technology used by software developers. Software Developers got to use JavaScript CLI tools to create the back-end part of web applications or server-side. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers.

Open Source 52

Open Source Virtualization Programming Servers 52

Smashing Magazine

JANUARY 11, 2021

Assets Optimizations Brotli, AVIF, WebP, responsive images, AV1, adaptive media loding, video compression, web fonts, Google fonts. Micro-optimizations are great for keeping performance on track, but it’s critical to have clearly defined targets in mind — measurable goals that would influence any decisions made throughout the process.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 104

Performance Cache Metrics Network 104

Smashing Magazine

SEPTEMBER 29, 2021

Complex compression algorithms may require higher processing power to encode/decode images. A complex decoding process can slow down the rendering of images. However, you should ideally replace such images with videos. AVIF is the image version of the popular AV1 video format. AVIF Benefits.

Open Source 144

Open Source Speed Website Google 144