The Netflix TechBlog

NOVEMBER 22, 2019

December 2 1pm-2pm CMP 326-R Capacity Management Made Easy with Amazon EC2 Auto Scaling Vadim Filanovsky , Senior Performance Engineer & Anoop Kapoor, AWS Abstract :Amazon EC2 Auto Scaling offers a hands-free capacity management experience to help customers maintain a healthy fleet, improve application availability, and reduce costs.

AWS 37

AWS Entertainment Open Source Benchmarking 37

CSS Wizardry

MARCH 3, 2019

— Harry Roberts (@csswizardry) 3 March, 2019. If there is a newer file available on the server, we definitely want to download it. If, however, there wasn’t a new file on the server, we’ll bring back a 304 header, no new file, but an entire roundtrip of latency. On high latency connections, this saving could be tangible.

Cache 264

Cache Latency Strategy Servers 264

The Morning Paper

OCTOBER 4, 2020

We are standing on the eve of the 5G era… 5G, as a monumental shift in cellular communication technology, holds tremendous potential for spurring innovations across many vertical industries, with its promised multi-Gbps speed, sub-10 ms low latency, and massive connectivity. Throughput and latency. km university campus.

Energy 130

Energy Latency Performance Network 130

Smashing Magazine

JANUARY 7, 2019

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. 2019-01-07T12:00:13+00:00. 2019-04-29T18:34:58+00:00. Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Vitaly Friedman.

Performance 104

Performance Cache Network Metrics 104

The Morning Paper

NOVEMBER 8, 2020

USENIX is a nonprofit organisation committed to making content and research freely available – both conference proceedings and the recorded presentations of their events. They needed a table store to power core control plane services, which meant strong guarantees on durability, consistency, and availability.

Virtualization 126

Virtualization Latency Storage Systems 126

Testsigma

FEBRUARY 12, 2021

Are you aware that the scale of the app testing industry in 2019 was over USD$ 40 billion? In 2019, we had previously projected the demand for IoT research at $781.96billion. 38% of organisations were expected to introduce machine-learning initiatives in 2019, according to the Capgemini World Efficiency survey. billion in 2016.

Artificial Intelligence 92

Artificial Intelligence Software Software IoT 92

Alex Russell

DECEMBER 18, 2022

The talks are up on YouTube , including my own (behind a paywall, but the slides are freely available [1] ): The talk, like this post, is an update on network and CPU realities this series has documented since 2017. Without beating around the bush, our ASP 2019 device was an Android that cost between $300-$350, new and unlocked.

Performance 113

Performance Network Mobile Latency 113

Dynatrace

JUNE 25, 2021

As a strong supporter of open source and open standards, I’m aware that the wide availability of standards, open-source tools, and some newly coined terms are causing a lot of confusion. In 2019, the OpenCensus and OpenTracing projects merged into what we now know as OpenTelemetry.

Open Source 202

Open Source Monitoring Google Systems 202

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Providing high availability for real-time events. Some of DBLog’s features are: Processes captured log events in-order.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Providing high availability for real-time events. High Availability DBLog uses active-passive architecture. Figure 3?—?DBLog

Database 197

Database Traffic Transportation Open Source 197

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Checking those available: $ cat /sys/devices/system/clocksource/clocksource0/available_clocksource. In 2019 myself and others tested kvm-clock and found it was only about 20% slower than tsc.

Speed 126

Speed Java AWS Virtualization 126

All Things Distributed

SEPTEMBER 25, 2017

The Region will be in the heart of Gulf Cooperation Council (GCC) countries, and we're aiming to have it ready by early 2019. This Region will consist of three Availability Zones at launch, and it will provide even lower latency to users across the Middle East. This news marks the 22nd AWS Region we have announced globally.

Cloud 152

Cloud Education Energy Government 152

SQL Performance

APRIL 27, 2020

Microsoft took that idea and built a new compute tier called Azure SQL Database serverless, which became generally available in November 2019. This way they can know that there is always a minimum compute level available, and they can always automatically scale to a designated compute level. Conclusion.

Azure 55

Azure Database Serverless Hardware 55

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). This mode is still available but take up from busy service teams was limited. Automating chaos experiments in production Basiri et al., Defining and running experiments.

Latency 77

Latency Engineering Metrics Traffic 77

All Things Distributed

DECEMBER 12, 2018

Today, I'm happy to announce that the AWS Europe (Stockholm) Region, our 20th Region globally, is now generally available for use by customers. With this launch, AWS now provides 60 Availability Zones, with another 12 zones and four Regions expected to come online by 2020 in Bahrain, Cape Town, Hong Kong, and Milan.

AWS 124

AWS Cloud Games Serverless 124

Brendan Gregg

AUGUST 29, 2021

biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. total used free shared buff/cache available Mem: 64414 18421 11218 5 34773 45407 Swap: 0 0 0. Tracing block device I/O. Nothing odd here. ## 5.

Cache 105

Cache C++ AWS Latency 105

KeyCDN

JUNE 20, 2019

However, in 2019, the expectation for a good user experience is now higher than ever. 6 Ways to Optimize Your eCommerce Conversion Rate Below we’ve outlined 6 methods you should implement to increase your eCommerce conversion rate in 2019. Improve Site Speed In 2019, having fast site speed is imperative.

Ecommerce 41

Ecommerce Speed Website Mobile 41

Dynatrace

JANUARY 15, 2020

Having released this functionality in an Preview Release back in September 2019, we’re now happy to announce the General Availability of our Citrix monitoring extension. Synthetic monitoring: Citrix login availability and performance. Citrix latency represents the end-to-end “screen lag” experienced by a server’s users.

Latency 37

Latency Performance Virtualization Infrastructure 37

HammerDB

OCTOBER 18, 2019

rc3-custom #1 SMP Mon Aug 12 14:07:33 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Welcome to Ubuntu 19.04 (GNU/Linux 5.3.0-rc3-custom GHz available cpufreq governors: performance powersave current policy: frequency should be within 1000 MHz and 4.00 uname -a Linux ubuntu19 5.3.0-rc3-custom rc3-custom x86_64).

Benchmarking 63

Benchmarking Performance Hardware C++ 63

Smashing Magazine

SEPTEMBER 29, 2021

It was released in February 2019 by the Alliance for Open Media (AOMedia). Additional format vs quality comparisons are available for photography and illustrations. Since its release in 2019, the support for AVIF has increased considerably. Jump to table of contents ?. AVIF is the image version of the popular AV1 video format.

Open Source 144

Open Source Speed Website Google 144

Alex Russell

MARCH 6, 2021

Modern network performance and availability. India has been the epicentre of smartphone growth in recent years, owing to the sheer size of its market and an accelerating shift away from feature phones which made up the majority of Indian mobile devices until as late as 2019. So what did $150USD fetch in 2019? Hard Reset.

Performance 124

Performance Network Cache Metrics 124

SQL Performance

APRIL 8, 2019

These VMs are not available in all regions, so you will want to check the availability in the Azure region that you are interested in using. As 128GB DDR4 DIMMs become more widely available that total capacity will double. They feature low latency, local NVMe storage that can directly leverage the 128 PCIe 3.0

Azure 42

Azure Virtualization Storage Benchmarking 42

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. The change was obvious in the production graphs, showing a drop in write latencies: Once tested more broadly, it showed the write latencies dropped by 43%, delivering slightly better performance than on CentOS.

Speed 52

Speed Java AWS Virtualization 52

O'Reilly

DECEMBER 2, 2019

For applications like communication between AVs, latency–how long it takes to get a response–is more likely to be a bigger limitation than raw bandwidth, and is subject to limits imposed by physics. There are impressive estimates for latency for 5G, but reality has a tendency to be harsh on such predictions. Upcoming events.

Wireless 53

Wireless Serverless IoT Artificial Intelligence 53

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. The change was obvious in the production graphs, showing a drop in write latencies: Once tested more broadly, it showed the write latencies dropped by 43%, delivering slightly better performance than on CentOS.

Speed 40

Speed Java AWS Virtualization 40

CSS - Tricks

MARCH 16, 2020

Google Lighthouse is one of the best-automated tools available on a web developer's utility belt. Estimated input latency - Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. But first, for the uninitiated.

Google 82

Google Latency Website Metrics 82

KeyCDN

JULY 11, 2019

Using an image CDN, such as KeyCDN, can significantly reduce the latency of your image delivery. Well, according to HTTP Archive , as of June 1, 2019 the average desktop page is 1,896.8 The PHP library for the API is available on GitHub. This allows your images to be delivered much faster all around the world.

Speed 52

Speed Website Mobile Latency 52

Brendan Gregg

AUGUST 29, 2021

biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. free(1) shows it fitting in the page cache: # free -m total used free shared buff/cache available Mem: 64414 18421 11218 5 34773 45407 Swap: 0 0 0 And iostat(1) shows little disk I/O, as expected: # iostat -xz 1 Linux 4.4.0-1072-aws Nothing odd here. ## 5.

Cache 40

Cache C++ AWS Systems 40

KeyCDN

MAY 14, 2019

This new feature is available to all customers, is fully integrated into our existing network, and allows comprehensive on the fly image transformation and optimization. The Image Processing feature is available on all Pull Zones. We’re thrilled to announce that we’ve added the Image Processing feature!

Processing 13

Processing Cache Latency Network 13

John McCalpin

JULY 23, 2018

Updates on 2019-01-23 in blue. This partial ordering can help expose the execution time of long-latency instructions (such as memory accesses or mispredicted branches) that occur shortly before the final value of the TSC is read using RDTSCP. There are lots of topics that you need to be aware of when attempting fine-grain timing.

Code 45

Code Programming Latency Testing 45

KeyCDN

SEPTEMBER 12, 2019

Well, according to HTTP Archive , as of June 1, 2019 the average desktop page is 1,896.8 The PHP library for the API is available on GitHub. 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. KB (30%) without losses.

Social Media 106

Social Media Media Google Website 106

Smashing Magazine

JANUARY 6, 2020

Usually, the most specific and relevant ones are: Time to Interactive (TTI) The point at which layout has stabilized, key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Large preview ). Getting started with Webpack can be tough though.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 11, 2021

Usually, the most specific and relevant ones are: Time to Interactive (TTI) The point at which layout has stabilized , key webfonts are visible, and the main thread is available enough to handle user input — basically the time mark when a user can interact with the UI. Large preview ). Large preview ).

Performance 145

Performance Cache Media Metrics 145

HammerDB

OCTOBER 12, 2018

maximum transition latency: Cannot determine or is not supported. . GHz available cpufreq governors: performance powersave . Nevertheless around 2M MySQL TPM is very respectable throughput for an enterprise workload and as there is a lot more CPU available the potential is there to go a lot higher. .

Best Practices 40

Best Practices Scalability Performance C++ 40