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

VoltDB

JUNE 1, 2017

Hardware Optimizers” want to get the maximum utilization out of hardware. These systems were designed to have a lifetime of half a decade or more, and rapidly changing hardware meant that the initial deployment had to be sized for 5-7 years out. Latency Optimizers” – need support for very large federated deployments.

Hardware 56

Hardware Latency Virtualization Cloud 56

The Morning Paper

JULY 4, 2019

degraded hardware, transient networking problem) or, more often, because of some change deployed by Netflix engineers that did not have the intended effect. Two failure modes we focus on are a service becoming slower (increase in response latency) or a service failing outright (returning errors).

Latency 77

Latency Engineering Metrics Traffic 77

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

Percona

MAY 2, 2023

However, it’s important to note that the optimal value may vary depending on your specific workload and hardware configuration. The answer does not consider the queue or latency of the sample, which could indicate a disk with issues. 16) and monitoring the server’s performance. The answer could be better.

Social Media 125

Social Media Database Servers Cache 125

Sutter's Mill

JUNE 21, 2012

Now welcome to the hardware jungle. 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 — The free lunch is over.

Latency 40

Latency Transportation Hardware Education 40

Smashing Magazine

JANUARY 11, 2021

Assets Optimizations Brotli, AVIF, WebP, responsive images, AV1, adaptive media loding, video compression, web fonts, Google fonts. Paddy Ganti’s script constructs two URLs (one normal and one blocking the ads), prompts the generation of a video comparison via WebPageTest and reports a delta.

Performance 145

Performance Cache Media Metrics 145

SQL Server According to Bob

SEPTEMBER 26, 2016

When we released Always On Availability Groups in SQL Server 2012 as a new and powerful way to achieve high availability, hardware environments included NUMA machines with low-end multi-core processors and SATA and SAN drives for storage (some SSDs). As we moved towards SQL Server 2014, the pace of hardware accelerated.

Availability 40

Availability Servers Hardware Benchmarking 40

Dotcom-Montior

DECEMBER 8, 2021

Software services still require physical devices and hardware for them to function. An organization’s response to an incident, whether we are talking about downtime, security breaches or cyber-attacks, or even prolonged latency and repeated errors, is critical to the continued success of the business and trust from the customer or end user.

Social Media 90

Social Media Monitoring Latency DevOps 90

Alex Russell

JUNE 20, 2020

rich multimedia (animations, video, audio). Huge reach, plus the licensing of On2's video codecs , made Flash the default video delivery mechanism for many years. a lab's worth of sensors , including: cameras (both still and video). In each quantum of time, hardware and OS vendors press ahead, adding features.

Hardware 55

Hardware Games Java Media 55

Smashing Magazine

JANUARY 6, 2020

To get a good first impression of how your competitors perform, you can use Chrome UX Report ( CrUX , a ready-made RUM data set, video introduction by Ilya Grigorik and detailed guide by Rick Viscomi) or Treo Sites , a RUM monitoring tool that is powered by Chrome UX Report. You can then mimic the 90th percentile’s experience for testing.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

AUGUST 3, 2021

Different browsers running on different platforms and hardware, respecting our user preferences and browsing modes (Safari Reader/ assistive technologies), being served to geo-locations with varying latency and intermittency increase the likeness of something not working as intended. More after jump! On design systems, CSS/JS and UX.

Network 145

Network Engineering Availability Monitoring 145

Smashing Magazine

JANUARY 7, 2019

To get a good first impression of how your competitors perform, you can use Chrome UX Report ( CrUX , a ready-made RUM data set, video introduction by Ilya Grigorik), Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing).

Performance 103

Performance Cache Metrics Network 103

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. By default, most Linux installs use the CFQ ( Completely-Fair Queue ) scheduler. Two other schedulers are deadline and noop.

Best Practices 52

Best Practices Design Tuning Database 52

Brendan Gregg

SEPTEMBER 5, 2017

. ## Observability Here's the big picture of performance observability tools on Linux, from my [Linux performance] page, where I also have diagrams for other tool types, as well as videos and slides of prior Linux performance talks: I also have a USE Method: Linux Performance Checklist , as a different way to navigate and apply the tools.

Virtualization 76

Virtualization AWS Engineering Hardware 76

All Things Distributed

MARCH 11, 2016

This is a given, whether you are using the highest quality hardware or lowest cost components. When customers left the constraining, old world of IT hardware and datacenters behind, they started to develop systems with new and interesting usage patterns that no one had ever seen before. Primitives not frameworks. No gatekeepers.

AWS 144

AWS Hardware Retail Virtualization 144

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 105

Performance Network Latency Servers 105

O'Reilly

JULY 20, 2021

There may be multiple people in the room during a video call, not just the person you are calling. But when a new baby comes home, being able to do video calling with close relatives may become a higher priority. This is why people have made a business out of setting up home stereo and video systems. People can walk in and out.

Google 121

Google Games Technology Technology 121