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 Traffic 98

Percona

JUNE 22, 2023

This includes metrics such as query execution time, the number of queries executed per second, and the utilization of query cache and adaptive hash index. query cache: Disable (query_cache_size: 0, query_cache_type:OFF) innodb_adaptive_hash_index: Check adaptive hash index usage to determine its efficiency.

Performance 102

Performance Monitoring Traffic Database 102

CSS Wizardry

MARCH 3, 2019

To this end, having a solid caching strategy can make all the difference for your visitors. ?? How is your knowledge of caching and Cache-Control headers? That being said, more and more often in my work I see lots of opportunities being left on the table through unconsidered or even completely overlooked caching practices.

Cache 264

Cache Latency Strategy Servers 264

Percona

SEPTEMBER 1, 2023

This reduction in latency ensures that applications and websites provide a more rapid and responsive user experience. Download the eBook now What are the Common Performance Issues in MySQL Databases? Caching Mechanisms Utilizing caching mechanisms is a potent technique for accelerating query response times within MySQL databases.

Tuning 52

Tuning Database Performance Hardware 52

Smashing Magazine

APRIL 17, 2019

The browser caches the results of these lookups, but they can be slow. This typically happens once per server and takes up valuable time — especially if the server is very distant from the browser and network latency is high. Get it wrong, and you’ve wasted time and resources in downloading something that isn’t going to be used.

Performance 106

Performance Games Servers Cache 106

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? Estimated Input Latency. Estimated Input Latency. It’s important to remember that the cost of JavaScript is not only the time it takes to download it. Service workers that will cache the bytecode result of a parsed and compiled script. After that, it’ll be mitigated by cache.

Google 71

Google Engineering Speed Mobile 71

KeyCDN

SEPTEMBER 12, 2019

KeyCDN’s Cache Enabler plugin is fully compatible the HTML attributes that make images responsive. 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. The Cache Enabler plugin then delivers WebP images based to supported browsers.

Social Media 106

Social Media Media Google Website 106

Rigor

JULY 2, 2019

Because of the redirection, our total HTML request, download, and render time took an additional 156 ms – for a total of 521 ms. If your site requires external files, such as images and CSS, ensure that your HTML calls these resources directly and that there aren’t any redirects occurring to download these files.

Mobile 60

Mobile Traffic Google Latency 60

SQL Performance

SEPTEMBER 17, 2019

For years SSRS was bundled with the installation of SQL Server, which helped add to some of the confusion around licensing and support for the product, so beginning with SSRS 2017, the installation package for Reporting Services is a separate download. Disk latency for ReportServer and ReportServerTempDB are very important.

Tuning 67

Tuning Servers Database Best Practices 67

The Netflix TechBlog

SEPTEMBER 24, 2021

From chunk encoding to assembly and packaging, the result of each previous processing step must be uploaded to cloud storage and then downloaded by the next processing step. Uploading and downloading data always come with a penalty, namely latency. For write operations, those challenges do not apply.

Cloud 237

Cloud Media Storage Cache 237

CSS Wizardry

AUGUST 13, 2019

Entry (10) lives on a different origin again, so we have more connection overhead to contend with, and the file seems to take an incredibly long time to download (as evidenced by the sheer amount of dark green—sending data). To further exacerbate the problem, the 302 response has a Cache-Control: must-revalidate, private.

Latency 203

Latency Cache Strategy Media 203

CSS - Tricks

APRIL 1, 2021

seconds faster on average and it drove 60 million more Firefox downloads per year. 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. Source: Google /SOASTA Research, 2018.

Cache 92

Cache Social Media Media Website 92

Smashing Magazine

AUGUST 3, 2023

Download Time of HTML This is the time it takes to download the page’s HTML file. You need to beware of large HTML files or slow network connections because they can lead to longer download times. Fetching And Decoding Images This is the time taken to fetch, download, and decode images, particularly the largest contentful image.

Performance 74

Performance Cache Traffic Metrics 74

IO River

NOVEMBER 2, 2023

Given its unchanging nature, static content is ideal for caching. This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. It doesn’t change very often and is generally not affected by user sessions.

Architecture 52

Architecture Performance Internet Internet 52

Percona

APRIL 7, 2023

Here’s how the same test performed when running Percona Distribution for PostgreSQL 14 on these same servers: Queries: reads Queries: writes Queries: other Queries: total Transactions Latency (95th) MySQL (A) 1584986 1645000 245322 3475308 122277 20137.61 MySQL (B) 2517529 2610323 389048 5516900 194140 11523.48

Tuning 133

Tuning Cache Servers Benchmarking 133

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Instead, the player downloads and stores small segments of the video, playing one while simultaneously downloading subsequent parts.Â

Architecture 52

Architecture Performance Internet Internet 52

Dynatrace

OCTOBER 4, 2022

Data lakehouses deliver the query response with minimal latency. By applying massively parallel processing and high-performance caches, all this contextualized data can be interrogated at high speeds for ad-hoc analytics or AI-powered precise answers. Download report now! Massively parallel processing.

Artificial Intelligence 214

Artificial Intelligence Storage Analytics Government 214

Smashing Magazine

MAY 16, 2022

For example, we almost always trigger image downloads by putting an img element in our HTML. Along with the other performance information on the entry like download times, we see the status was served as 200 (not triggering our onerror handlers on the element), resizing failed after spending 1.2s

Servers 92

Servers Monitoring Cache Network 92

All Things Distributed

MAY 13, 2012

With just one click you can enable content to be distributed to the customer with low latency and high-reliability. The first set of features that CloudFront is launching today include: Multiple Origin Servers: the ability to specify multiple origin servers, including a default origin, for a CloudFront download distribution.

Cache 118

Cache Latency AWS Website 118

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

Dotcom-Montior

MARCH 6, 2022

Waterfall charts are diagrams which represent how website resources are being downloaded, parsed by the engine, in a timeline that gives us the opportunity to see the sequence and dependencies between resources. The time it takes to download files. Moreover, caching utility may decrease the waiting time. Queued request.

Performance 52

Performance Cache Website Speed 52

Smashing Magazine

AUGUST 20, 2021

However, MovableType was one of the first widely available platforms you could download for free and host yourself. When you run an SSG build, you download the content from the content API and interact with it like you would a data file. With MovableType, you had everything you needed to manage your blog.

Ecommerce 139

Ecommerce Website Government Internet 139

John McCalpin

APRIL 2, 2020

All of the SPECfp_rate2000 results were downloaded from www.spec.org, the results were sorted by processor type, and “peak floating-point operations per cycle” was manually added for each processor type. In these tests, we did not have the same ability to vary memory latency that I had with the 2007 Opteron systems.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

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. Make sure the drives are mounted with noatime and also if the drives are behind a RAID controller with appropriate battery-backed cache.

Best Practices 52

Best Practices Design Tuning Database 52

Dotcom-Montior

MAY 6, 2020

Waterfall charts are diagrams which represent how website resources are being downloaded, parsed by the engine, in a timeline that gives us the opportunity to see the sequence and dependencies between resources. The time it takes to download files. Moreover, caching utility may decrease the waiting time. Queued request.

Performance 53

Performance Cache Website Speed 53

Alex Russell

APRIL 29, 2021

For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. Enable developers to compress data efficiently without downloading large amounts of code to the browser. An extension to Service Workers that enables browsers to present users with cached content when offline.

Media 145

Media Games Education Engineering 145

KeyCDN

JULY 11, 2019

Using an image CDN, such as KeyCDN, can significantly reduce the latency of your image delivery. For example, while the average mobile download speed on 4G in Switzerland is fast at 35.2 Mbps, countries with a growing Internet users like India is only at an average mobile download speed of 6.8 Mbps ( Opensignal ).

Speed 52

Speed Website Mobile Latency 52

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. The fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest. The Moto G4 , for example. Is that a lot?

Performance 124

Performance Network Cache Metrics 124

Percona

MAY 2, 2023

Cons of logical backups As it reads all data, it can be slow and will require disk reads too for databases that are larger than the RAM available for the WT cache—the WT cache pressure increases, which slows down the performance. Download Percona Backup for MongoDB

Best Practices 52

Best Practices Database Storage Servers 52

SQL Server According to Bob

JANUARY 11, 2020

Then follow the instructions to either download the BOL or browse online. Stable media is commonly physical disk storage, but other devices and certain caching facilities qualify as well. Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations.

Servers 40

Servers Cache Media Hardware 40

Smashing Magazine

AUGUST 9, 2021

You’ve probably heard things like: “HTTP/3 is much faster than HTTP/2 when there is packet loss”, or “HTTP/3 connections have less latency and take less time to set up”, and probably “HTTP/3 can send data more quickly and can send more resources in parallel”. For HTTP/1.1, Improving this situation was one of the main goals for HTTP/2.

Transportation 145

Transportation Internet Internet Network 145

Smashing Magazine

SEPTEMBER 6, 2021

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. Finally, not inlining resources has an added latency cost because the file needs to be requested. Prioritization.

Network 104

Network Servers Cache Traffic 104

Alex Russell

OCTOBER 22, 2017

Script execution delays interactivity in a few ways: If the script executes for more than 50ms, time-to-interactive is delayed by the entire amount of time it takes to download, compile, and execute the JS. It simulates a link with a 400ms RTT and 400-600Kbps of throughput (plus latency variability and simulated packet loss).

Performance 68

Performance Benchmarking Network Mobile 68

SQL Server According to Bob

JANUARY 11, 2020

Time of Last Access The time of last access is a caching ​​ algorithm ​​ that enables ​​ cache ​​ entries to be ordered by their ​​ access times.

Servers 40

Servers Cache Database Media 40

The Netflix TechBlog

MARCH 6, 2019

Furthermore, the movie file is very large (often several 100s of GB), and we want to avoid downloading the entire file for each individual video encoder that might be processing only a small segment of the whole movie. Disk Caching? — ? MezzFS can be configured to cache objects on the local disk. Regional caching? —?Netflix

Media 214

Media Storage Processing Cache 214

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. Download The Checklist (PDF, Apple Pages, MS Word). Quick Wins.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Download The Checklist (PDF, Apple Pages, MS Word). You can also just download the checklist PDF (166 KB) or download editable Apple Pages file (275 KB) or the.docx file (151 KB). Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Assets Optimizations. Quick Wins.

Performance 145

Performance Cache Network Metrics 145