CSS Wizardry

MAY 31, 2019

Users might already have the file cached. If website-a.com links to [link] , and a user goes from there to website-b.com who also links to [link] , then the user will already have that file in their cache. Penalty: Network Negotiation. On a slower, higher-latency connection, the story is much, mush worse. Full test.

Cache 274

Cache Latency Infrastructure Website 274

Dynatrace

SEPTEMBER 13, 2023

Using an interactive no/low code editor, you can create workflows or configure them as code. The Site Reliability Guardian helps automate release validation based on SLOs and important signals that define the expected behavior of your applications in terms of availability, performance errors, throughput, latency, etc.

AWS 236

AWS Efficiency Azure Cloud 236

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. The resource loading waterfall is a cascade of files downloaded from the network server to the client to load your website from start to finish. How will you serve blazingly fast code, then? Caching Schemes.

Performance 127

Performance Cache Servers Social Media 127

CSS Wizardry

AUGUST 7, 2019

The first—and often most surprising for people to learn—thing that I want to draw your attention to is that TTFB counts one whole round trip of latency. The reason is because mobile networks are, as a rule, high latency connections. only to find that the resource they’re requesting isn’t in that PoP ’s cache.

Latency 269

Latency Ecommerce Servers Mobile 269

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. These subtypes are currently the only subtypes related to network requests and thus exposing the Server-Timing information. Setting Server-Timing. — any freeform data that suits your needs.

Servers 95

Servers Monitoring Cache Network 95

Sutter's Mill

FEBRUARY 13, 2017

Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). On April 25-27, I’ll be in Stockholm (Kista) giving a three-day seminar on “High-Performance and Low-Latency C++.” If you’re interested in attending, please check out the links, and I look forward to meeting and re-meeting many of you there.

Latency 48

Latency C++ Hardware Performance 48

Smashing Magazine

AUGUST 3, 2023

You need to beware that slow server response times can significantly increase TTFB, often due to server overload, network issues, or un-optimized logic on the server side. You need to beware of large HTML files or slow network connections because they can lead to longer download times.

Performance 75

Performance Cache Traffic Metrics 75

The Morning Paper

FEBRUARY 6, 2020

Last week we looked at a function shipping solution to the problem; Cloudburst uses the more common data shipping to bring data to caches next to function runtimes (though you could also make a case that the scheduling algorithm placing function execution in locations where the data is cached a flavour of function-shipping too).

Lambda 98

Lambda Serverless Cache Latency 98

CSS - Tricks

APRIL 1, 2021

The code for the site is available on GitHub for reference. Redirects are often pretty light in terms of the latency that they add to a website, but they are an easy first thing to check, and they can generally be removed with little effort. In DevTools, the Network inspector helps us see what the first webpage is doing too.

Cache 92

Cache Social Media Media Website 92

Adrian Cockcroft

JANUARY 29, 2023

The mean and percentile measurements hide this structure, but the rest of this post will show how the structure can be measured and analyzed so that you can figure out a useful model of your system, understand what is driving the long tail of latencies and come up with better SLAs and measures of capacity.

Lambda 98

Lambda Latency Cache C++ 98

Alex Russell

DECEMBER 18, 2022

TL;DR : To serve users at the 75 th percentile ( P75 ) of devices and networks, we can now afford ~150KiB of HTML/CSS/fonts and ~300-350KiB of JavaScript (gzipped). This is a slight improvement on last year's budgets , thanks to device and network improvements. Networks #. This is an ethical crisis for the frontend.

Performance 113

Performance Network Mobile Latency 113

The Netflix TechBlog

MARCH 6, 2019

Disk Caching? — ? MezzFS can be configured to cache objects on the local disk. Regional caching? —?Netflix If an application in region A is using MezzFS to read from an object stored in region B, MezzFS will cache the object in region A. we only pay the transfer costs for one worker, and the rest use the cached object.

Media 214

Media Storage Processing Cache 214

CSS Wizardry

MAY 19, 2020

It’s widely accepted that self-hosted fonts are the fastest option: same origin means reduced network negotiation, predictable URLs mean we can preload , self-hosted means we can set our own cache-control. On a high-latency connection, this spells bad news. Put another-other way, this file is latency-bound, not bandwidth-bound.

Google 364

Google Media Latency Metrics 364

Smashing Magazine

JANUARY 11, 2021

Have we optimized enough with tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, progressive hydration, clients hints, HTTP/3, service workers and — oh my — edge workers? Networking, HTTP/2, HTTP/3 OCSP stapling, EV/DV certificates, packaging, IPv6, QUIC, HTTP/3.

Performance 145

Performance Cache Media Metrics 145

Adrian Cockcroft

JANUARY 20, 2023

Most of the top supercomputers are similar to Frontier, they use AMD or Intel CPUs, with GPU accelerators, and Cray Slingshot or Infiniband networks in a Dragonfly+ configuration. The four categories still make sense: kernel managed network sockets, user mode message passing libraries, coherent memory interfaces, and on-chip communication.

Architecture 52

Architecture Latency Benchmarking AWS 52

ScaleOut Software

MAY 15, 2014

We have spent a great deal of time at ScaleOut Software re-architecting our in-memory data grid (IMDG)’s code base to make best use of many cores and large memory. Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Please retry later.

Cache 40

Cache Servers Network Design 40

Smashing Magazine

JANUARY 6, 2020

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? It’s much easier to reach performance goals when the code base is fresh or is just being refactored. 300ms RTT, 1.6

Performance 145

Performance Cache Network Metrics 145

The Morning Paper

SEPTEMBER 10, 2019

That’s hard for many reasons, including the differing trade-offs between throughput and latency that need to be made across the use cases. to understand YouTube video performance) drive tens of thousands of canned (known in advance) queries per second, that need to be served with latency in the tens of milliseconds.

Analytics 75

Analytics Latency Cache Google 75

Brendan Gregg

AUGUST 18, 2019

It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. Block I/O latency as a histogram. 1 /* 2 * biolatency.bt

Latency 68

Latency C++ Cache Programming 68

Smashing Magazine

JANUARY 7, 2019

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled network (e.g.

Performance 104

Performance Cache Metrics Network 104

The Morning Paper

MAY 12, 2019

The paper examines the implications of microservices at the hardware, OS and networking stack, cluster management, and application framework levels, as well as the impact of tail latency. Smaller microservices demonstrated much better instruction-cache locality than their monolithic counterparts. Hardware implications.

Open Source 61

Open Source Hardware Benchmarking Systems 61

Dotcom-Montior

MARCH 6, 2022

If the waiting time is too much, it may mean an overloaded network server or there may be an inefficient code, which must be fixed by software developers by finding the bugs and correcting the code. Moreover, caching utility may decrease the waiting time. The time captured by the server to produce a response.

Performance 52

Performance Cache Website Speed 52

ScaleOut Software

JULY 21, 2020

For more than fifteen years, ScaleOut StateServer® has demonstrated technology leadership as an in-memory data grid (IMDG) and distributed cache. Because all the work is performed with the IMDG, this has the two-fold advantage of offloading both the network and the client’s CPU. In-Memory Data Grids for Fast-Changing Data.

Analytics 52

Analytics Airlines Cache Scalability 52

ScaleOut Software

JULY 21, 2020

For more than fifteen years, ScaleOut StateServer® has demonstrated technology leadership as an in-memory data grid (IMDG) and distributed cache. Because all the work is performed with the IMDG, this has the two-fold advantage of offloading both the network and the client’s CPU. In-Memory Data Grids for Fast-Changing Data.

Analytics 52

Analytics Airlines Cache Scalability 52

Abhishek Tiwari

NOVEMBER 3, 2018

Case-in-point, most enterprise CMS vendors lack robust full-site content delivery network (CDN) integration. A few months back, I was pulled into a scenario where a business has been working with a leading CMS vendor to roll-out a network of multi-regional websites. Eventually, we decided to move them to Jekyll.

Systems 63

Systems Cache Website Network 63

The Morning Paper

APRIL 14, 2019

Microarchitectural state of interest includes data and instruction caches, TLBs, branch predictors, instruction- and data-prefetcher state machines, and DRAM row buffers. There are also stateless interconnects including buses and on-chip networks. So these on-core caches must be flushed on a domain switch.

Hardware 44

Hardware Cache Latency Speed 44

Dotcom-Montior

MAY 6, 2020

If the waiting time is too much, it may mean an overloaded network server or there may be an inefficient code, which must be fixed by software developers by finding the bugs and correcting the code. Moreover, caching utility may decrease the waiting time. The time captured by the server to produce a response.

Performance 53

Performance Cache Website Speed 53

John McCalpin

AUGUST 1, 2018

Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? Interacting components in the execution of an MPI job — a brief outline (from memory): The user source code, which contains an ordered set of calls to MPI routines.

Hardware 40

Hardware Transportation Performance Latency 40

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? Lighthouse uses Chrome’s Remote Debugging Protocol to read network request information, measure JavaScript performance, observe accessibility standards and measure user-focused timing metrics like First Contentful Paint , Time to Interactive or Speed Index. Estimated Input Latency. Speed Index.

Google 71

Google Engineering Speed Mobile 71

Alex Russell

OCTOBER 22, 2017

We constrain ourselves to a real-world baseline device + network configuration to measure progress. Budgets are scaled to a benchmark network & device. JavaScript is the single most expensive part of any page in ways that are a function of both network capacity and device speed. Execute the script. Global Ground-Truth.

Performance 68

Performance Benchmarking Network Mobile 68

Dean Hume

APRIL 24, 2018

Each HTTP request that is required for the page needs to travel over the network and in turn this consumes energy on both the server and client. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. Show me the money!

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

Each HTTP request that is required for the page needs to travel over the network and in turn this consumes energy on both the server and client. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. Show me the money!

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

Each HTTP request that is required for the page needs to travel over the network and in turn this consumes energy on both the server and client. Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. Show me the money!

Energy 40

Energy Cache Traffic Website 40

Speed Curve

JUNE 18, 2019

Some sort of performance gateway that only allows changes to production code if they meet performance requirements? Here's a short (and definitely not exhaustive) list of things that you may want to consider when running performance tests on an integration environment: Caches may need to be warmed up beforehand. The cycle repeats.

Performance Testing 49

Performance Testing Testing Performance Cache 49

Enprowess

SEPTEMBER 7, 2021

has a unit testing framework called Jasmine, which allows unit testing of code during development. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. Network: Node.js Caching of individual modules.

Open Source 52

Open Source Virtualization Programming Servers 52

KeyCDN

SEPTEMBER 12, 2019

An easy way to compress images is with our image processing service that happens to also be fully integrated into our existing network. KeyCDN’s Cache Enabler plugin is fully compatible the HTML attributes that make images responsive. It also allows for additional control over the caching of your images as well as hotlink protection.

Social Media 106

Social Media Media Google Website 106

John McCalpin

NOVEMBER 5, 2016

So consider the dense matrix multiplication operation C += A*B, where A, B, and C are dense square matrices of order N, and the matrix multiplication operation is equivalent to the pseudo-code: for (i=0; i<N; i++) { for (j=0; j<N; j++) { for (k=0; k<N; k++) { C[i][j] += A[i][k] * B[k][j]; } } }.

Cache 40

Cache C++ Latency Hardware 40