The Netflix TechBlog

DECEMBER 10, 2020

The increasing vastness and diversity of what our members are watching make answering these questions particularly challenging using conventional methods, which draw on a limited set of comparable titles and their respective performance metrics (e.g., box office, Nielsen ratings). This challenge is also an opportunity.

Entertainment 245

Entertainment Architecture Network Open Source 245

Dynatrace

APRIL 21, 2022

Most monitoring tools for migrations, development, and operations focus on collecting and aggregating the three pillars of observability— metrics, traces, and logs. Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host.

Azure 201

Azure Monitoring Virtualization Metrics 201

Highly Scalable

SEPTEMBER 18, 2012

It is well known and fairly obvious that in geographically distributed systems or other environments with probable network partitions or delays it is not generally possible to maintain high availability without sacrificing consistency because isolated parts of the database have to operate independently in case of network partition.

Database 213

Database Latency C++ Scalability 213

Dynatrace

NOVEMBER 9, 2021

Observability provides deeper technical insights into what’s happening within cloud environments, in comparison to APM and/or traditional monitoring methods. And for observability to be successful, it requires much more than just logs, metrics, and traces. Traditional approaches and tooling simply don’t work in the new cloud world.

DevOps 229

DevOps Innovation Cloud Programming 229

The Netflix TechBlog

FEBRUARY 20, 2019

Having the right metrics available on demand and at a high resolution is key to understanding how a system behaves and helps to quickly troubleshoot performance issues. This makes it much easier for engineers to get the graphs they want arranged in a manner for comparisons and to focus in the required areas. is more clearly visible.

Performance 217

Performance Latency Open Source Metrics 217

Dynatrace

SEPTEMBER 22, 2021

Application performance monitoring involves tracking key software application performance metrics using monitoring software and telemetry data. Application performance monitoring has a strong focus on specific metrics and measurements. Application performance management.

Monitoring 217

Monitoring Open Source Innovation Infrastructure 217

Dynatrace

FEBRUARY 16, 2023

ESG metrics are increasingly important to investors as they evaluate risk; in turn, these metrics are increasingly important to organizations because they measure and disclose their performance. The app translates utilization metrics, including CPU, memory, disk, and network I/O, into their CO2 equivalent (CO2e).

Energy 194

Energy Airlines Analytics Transportation 194

Dynatrace

MAY 24, 2023

To simulate those users’ journeys, multiple synthetic locations deployed within various sections of internal networks are required. Global corporations with offices in multiple countries need to ensure that their internal systems are accessible to all employees, regardless of their location.

Scalability 220

Scalability Virtualization Monitoring Open Source 220

Scalegrid

NOVEMBER 4, 2024

We use Sysbench to benchmark key performance metrics under different workloads and thread configurations, including Transactions Per Second (TPS) and Queries Per Second (QPS). Key metrics include TPS and QPS. Test Environment Setup Instance Types : We used similar cloud instances for AWS RDS and ScaleGrid to ensure a fair comparison.

Benchmarking 130

Benchmarking AWS Tuning Metrics 130

The Netflix TechBlog

JANUARY 24, 2022

Technically, “performance” metrics are those relating to the responsiveness or latency of the app, including start up time. At Netflix the term “performance” usually encompasses both performance metrics (in the strict meaning) and memory metrics, and that’s how we’re using the term here. What do we mean by Performance?

Performance 210

Performance Performance Testing Metrics Testing 210

The Netflix TechBlog

NOVEMBER 29, 2023

Details pertaining to HDR-VMAF exceed the scope of this article and will be covered in a future blog post; for now, suffice it to say that the first version of HDR-VMAF landed internally in 2021 and we have been improving the metric ever since. The arrival of HDR-VMAF allowed us to create HDR streams with DO applied, i.e., HDR-DO encodes.

Open Source 262

Open Source Software Engineering Internet Internet 262

The Netflix TechBlog

OCTOBER 14, 2024

Blame The Notebook Now that we have an objective metric for the slowness, let’s officially start our investigation. Blame The Network The next theory was that the network between the web browser UI (on the laptop) and the JupyterLab server was slow. the JupyterLab process) rather than the network. We then exported the .har

Latency 217

Latency Virtualization Traffic Processing 217

The Netflix TechBlog

FEBRUARY 13, 2023

Training Performance Media model training poses multiple system challenges in storage, network, and GPUs. For instance, matching across a series with 10 episodes with an average of 2K shots per episode translates into 200M comparisons. Match Cutting across titles Step 4 entails a computation that is quadratic in the number of shots.

Media 299

Media Storage Infrastructure Systems 299

The Netflix TechBlog

DECEMBER 2, 2019

QoE is measured with a compilation of metrics that describe everything about the user’s experience from the time they press play until the time they finish watching. Examples of such metrics include how quickly the content starts playing and the number of times the video froze during playback (number of rebuffers).

Metrics 147

Metrics Strategy Testing Efficiency 147

The Netflix TechBlog

DECEMBER 2, 2019

QoE is measured with a compilation of metrics that describe everything about the user’s experience from the time they press play until the time they finish watching. Examples of such metrics include how quickly the content starts playing and the number of times the video froze during playback (number of rebuffers).

Metrics 143

Metrics Strategy Testing Efficiency 143

Dynatrace

SEPTEMBER 25, 2019

Therefore, it requires multidimensional and multidisciplinary monitoring: Infrastructure health —automatically monitor the compute, storage, and network resources available to the Citrix system to ensure a stable platform. These metrics help you understand whether your Citrix landscape is sized correctly for its load.

Latency 119

Latency Performance Virtualization Infrastructure 119

Speed Curve

APRIL 27, 2022

But as you can see in these filmstrips of Wiggle, a UK cycling retailer, hiding the page can have a dramatic impact on a visitor's experience: Comparison of a site loading with (top) and without (bottom) the anti-flicker snippet enabled. To summarize: On one hand, anti-flicker snippets make metrics such as FCP (and possibly LCP) worse.

Performance 145

Performance C++ Google Retail 145

Dynatrace

MARCH 10, 2021

They collect metrics and raise alerts, but they provide few answers as to what went wrong in the first place. To start, let’s look at the illustration below to see how these two operate in comparison: Also to note on traditional machine learning: by its very nature of operation it is slow and less agile.

AWS 148

AWS Cloud Artificial Intelligence Innovation 148

The Netflix TechBlog

DECEMBER 2, 2019

QoE is measured with a compilation of metrics that describe everything about the user’s experience from the time they press play until the time they finish watching. Examples of such metrics include how quickly the content starts playing and the number of times the video froze during playback (number of rebuffers).

Metrics 130

Metrics Strategy Testing Efficiency 130

Highly Scalable

MAY 1, 2012

On the other hand, when one is interested only in simple additive metrics like total page views or average price of conversion, it is obvious that raw data can be efficiently summarized, for example, on a daily basis or using simple in-stream counters. A group of several such sketches can be used to process range query.

Analytics 191

Analytics Traffic Big Data Efficiency 191

Smashing Magazine

NOVEMBER 22, 2021

While mobile devices have come a long way in terms of network and CPU speed, many of them are still significantly underpowered when compared to desktops, especially in countries where mobile connectivity is still poor. Better tooling and metrics standardization. In other words, the field lacked standardization.

Website 129

Website Performance Google Website Performance 129

Alex Russell

FEBRUARY 28, 2022

The metrics that we report against implicitly cleave these into different "camps", leaving us thinking about pre- and post-load as distinct universes. Despite fully reloading the page, the HTML version of Gmail consumes fewer network resources (~70KiB) and takes less overall time to return to interaction.

Performance 113

Performance Latency Architecture Network 113

Brendan Gregg

AUGUST 8, 2017

Load averages are an industry-critical metric – my company spends millions auto-scaling cloud instances based on them and other metrics – but on Linux there's some mystery around them. But to understand them in more detail is difficult without the aid of other metrics. Network I/O? x 1.15 + 0.38 x 1.25 = 1.18.

Latency 111

Latency Metrics C++ Systems 111

Smashing Magazine

AUGUST 9, 2021

HTTP/2 versus HTTP/3 protocol stack comparison ( Large preview ). It also, however, takes a full network round trip to complete before anything else can be done on a connection. and lower), this typically takes two network round trips. For this reason, TCP is one of the most widely used and deployed protocols on the Internet.

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

AUGUST 10, 2023

In fact, there’s great tooling right under the hood of most browsers in DevTools that can do many things that a tried-and-true service like WebPageTest offers, complete with recommendations for improving specific metrics. Certain tools are designed for certain metrics with certain assumptions that produce certain results.

Speed 82

Speed Monitoring Testing Network 82

Speed Curve

NOVEMBER 30, 2022

With your RUM Compare dashboard, you can easily generate side-by-side comparisons for any two cohorts of data. Triage a performance regression related to the latest change or deployment to your site by looking at a before/after comparison. To use, simply select the metric along with the upper and lower bounds for each cohort.

Traffic 56

Traffic Metrics Speed Mobile 56

Smashing Magazine

MARCH 2, 2021

The gotcha here is that, if your mobile experience isn’t optimized for various devices and network conditions, these customers will never appear in your analytics — just because your website or app will be barely usable on their devices, and so they are unlikely to return. Driving Business Metrics. LT Browser in action.

Mobile 136

Mobile Testing Website Benchmarking 136

Smashing Magazine

MAY 16, 2022

This header can be set on the response of any network resource, such as XHR, fetch, images, HTML, stylesheets, etc. The header is constructed via a name with an optional description and/or metric value. These subtypes are currently the only subtypes related to network requests and thus exposing the Server-Timing information.

Servers 95

Servers Monitoring Cache Network 95

Alex Russell

MAY 9, 2022

Reduced network and device capacity correlate with other access challenges. Teams I've consulted are too often wrenched between celebration over "the big rewrite" launch and the morning-after realisation that the new stack is tanking business metrics. Accessibility: Performance is the foundation of access. Photo by Jay Heike.

Performance 99

Performance Latency Metrics Engineering 99

Scalegrid

AUGUST 15, 2019

Their free plan offers limited features, including connection, shell management, monitoring, data manipulation, and support, and you can compare them here on their plan comparison page. Just like the rest, NoSQL Manager offers a free commercial as well as paid subscription plans. NoSQL Manager paid plans are available for $98/version/user.

Database 40

Database Servers Availability Monitoring 40

Smashing Magazine

JULY 29, 2019

Failing that, we are usually able to connect to home or public WiFi networks that are on fast broadband connections and have effectively unlimited data. For comparison, the same amount of data costs $6.66 The speed of mobile networks, too, varies considerably between countries. As for mobile network connection type, 84.7%

Cache 97

Cache Mobile Google Network 97

Adrian Cockcroft

SEPTEMBER 23, 2024

There are three generations of GPUs that are relevant to this comparison. The Hopper H100 was announced in 2022 and is the current volume product that people are using, so that is used as the baseline for comparison. The HGX H100 8-GPU system is the baseline for comparison, and its datasheet performance is shownbelow.

Benchmarking 52

Benchmarking Energy Architecture Latency 52

HammerDB

JULY 6, 2024

This is a brief post to highlight the metrics to use to do the comparison using a separate hardware platform for illustration purposes. Metrics Connected Started CPU Metrics for Intel(R) Xeon(R) Platinum 8280L CPU @ 2.70GHz:(112 CPUs) hammerdb>tcstart Transaction Counter Started hammerdb>0 MariaDB tpm CPU all usr%-0.00

C++ 52

C++ Hardware Benchmarking Virtualization 52

Smashing Magazine

OCTOBER 24, 2023

It’s “single-threaded,” which is how we get the one-way street comparison. Total Blocking Time One thing I know would be more helpful than a set of Core Web Vitals scores from Lighthouse is knowing the time it takes to go from the First Contentful Paint (FCP) to the Time to Interactive (TTI), a metric known as the Total Blocking Time (TBT).

Google 94

Google Analytics Traffic Metrics 94

Smashing Magazine

SEPTEMBER 6, 2021

Next, we’ll look at how to set up servers and clients (that’s the hard part unless you’re using a content delivery network (CDN)). Using just a few (but still more than one), however, could nicely balance congestion growth with better performance, especially on high-speed networks. Servers and Networks. Network Configuration.

Network 108

Network Servers Cache Traffic 108

Testsigma

JANUARY 18, 2021

Key Metrics to consider for Cross Browser Testing. Here are some of the essential factors (or metrics) that should be factored in the cross-browser testing activity: 1. Network Throttling – If your app is built for a global audience, it is important to test the app features in varied network conditions (e.g.

Testing 55

Testing Operating System Website Internet 55

Speed Curve

MAY 29, 2022

Not all metrics are created equal and I try to avoid picking favorites. This is true of many of the metrics we collect at SpeedCurve. To determine the smallest sample rate for each group, we looked at a combination of the aggregate numbers and a comparison of the histograms. This was a little tough. Increasing time windows.

Traffic 52

Traffic Metrics Monitoring Performance 52