Alex Podelko

SEPTEMBER 8, 2020

While Federico definitely has good points there, there is some truth in these myths too. The open source load testing tools definitely advanced a lot in both maturity and functionality – but there are many areas where they are behind best commercial tools (and if it matters for a specific user is another subject – for some it may not).

Open Source 223

Open Source Performance Testing Testing Performance 223

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? Let us have a look at the most popular types of mobile testing for applications and hardware.

Mobile 82

Mobile Testing Hardware C++ 82

O'Reilly

NOVEMBER 28, 2023

That pricing won’t be sustainable, particularly as hardware shortages drive up the cost of building infrastructure. AI users are definitely facing these problems: 7% report that data quality has hindered further adoption, and 4% cite the difficulty of training a model on their data. from the healthcare industry, and 3.7%

Open Source 108

Open Source Artificial Intelligence Google Infrastructure 108

Speed Curve

MARCH 7, 2022

Having said that, looking at data over the past ten years, it's safe to make the observation that pages are definitely trending bigger. You can dig deeper into the mechanics of how CLS is calculated, but the human-friendly definition is that CLS helps you understand how likely a page is to deliver a janky, unpleasant experience to viewers.

Mobile 145

Mobile Benchmarking Google Metrics 145

Percona

DECEMBER 14, 2022

The key goals of OLTP applications are availability, speed, concurrency, and recoverability. And if the query processes 100 million rows, that’s definitely not trivial! speeds up scans, . Despite its current limitations, there are use cases where this extension can definitely make a difference. drill-down.

Database 93

Database Analytics Storage Processing 93

Smashing Magazine

SEPTEMBER 3, 2021

It can be hard to visualize the huge network of hardware that allows you to send a request for a page to a server and then receive a response back. I find it slightly reassuring that, despite there being many websites with very low speeds and high emissions, most of the results are clustered in the bottom right of the chart.

Website 135

Website Energy Internet Internet 135

Alex Russell

SEPTEMBER 20, 2020

Pre-publication gates were valuable when better answers weren't available, but commentators should update their priors to account for hardware and software progress of the past 13 years. The closer one looks, the less a definition of "appiness" can be pinned down to specific technologies.

Hardware 64

Hardware Mobile Programming Java 64

Smashing Magazine

APRIL 19, 2021

Time to First Byte (TTFB), DOM Content Loaded, Start Render, Speed Index) — but from the experience of the user. On the plus side, for the last few days, the mean is actually higher than the p75 value since p75, by definition, filters out the extremes completely.

Google 140

Google Metrics Mobile Analytics 140

All Things Distributed

JULY 14, 2015

In traditional database architectures, database engines often run a small search engine or data warehouse engines on the same hardware as the database. Cross-region replication allows us to distribute data across the world for redundancy and speed. ” DynamoDB Triggers. You can learn more about these features on Jeff Barr’s blog.

Database 167

Database Lambda AWS IoT 167

Testsigma

MAY 3, 2021

What could be the best choice to cut down the costs and gain speed to move the pipeline faster than test automation? From operating systems to versions to hardware specs, mobile devices stand unique even after being billions in number. Being in a good position in your testing team, such a question will definitely cross your path.

Mobile 77

Mobile Testing Operating System Hardware 77

Alex Russell

JANUARY 30, 2024

HTML, CSS, images, and fonts can all be parsed and run at near wire speeds on low-end hardware, but JavaScript is at least three times more expensive, byte-for-byte. India's speed test medians are moving quickly, but variance is orders-of-magnitude wide, with 5G penetration below 25% in the most populous areas.

Performance 90

Performance Network Mobile Speed 90

Percona

AUGUST 29, 2018

Be aware of differing definitions. The definition of the SHMMAX/SHMALL parameters is slightly different between Linux and MacOS X. These are the definitions: Linux: kernel.shmmax, kernel.shmall. You need to set a value of vm.dirty_background_bytes depending on your disk speed. MacOS X: kern.sysv.shmmax, kern.sysv.shmall.

Tuning 58

Tuning Database Servers Processing 58

The Morning Paper

MAY 21, 2019

We focus on a definition that draws from the following two principles: (1) the value of temporal locality, by classifying as cold a memory page that has not been accessed beyond a threshold of T seconds; (2) a proxy for the application effect of far memory, by measuring the rate of accesses to cold memory pages, called promotion rate.

Software 78

Software Software Google Hardware 78

Smashing Magazine

AUGUST 22, 2021

A Primer on Speed. Discussing performance and “speed” can quickly get complex, because many underlying aspects contribute to a web-page loading “slowly”. It is physically limited by the speed of light or, practically, how fast signals can travel in wires or in the open air. Congestion Control. Did You Know?

Performance 105

Performance Network Latency Servers 105

CSS - Tricks

AUGUST 18, 2020

Yet, this criticism of React isn’t completely unwarranted: React and ReactDOM total about 120 KiB of minified JavaScript, which definitely contributes to slow startup time. When even a bit of React can be a problem on devices slow and fast alike, using it is an intentional choice that effectively excludes people with low-end hardware.

Performance 101

Performance Mobile Servers Code 101

The Morning Paper

APRIL 2, 2019

In this context it means there are no external dependencies on e.g. secrets, trusted hardware modules, or special instructions (e.g. The values of d and k in the Horner(H) problem for a device can be chosen such that the duration requirement is satisfied across devices of varying speed. Implementation.

Software 40

Software Software Programming Hardware 40

SQL Server According to Bob

JANUARY 11, 2020

Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations. Example 1: ​​ Hardware failure (CPU board) Battery backup on the caching controller maintained the data. Important Always consult with your hardware manufacturer for proper stable media strategies.

Servers 40

Servers Cache Media Hardware 40

Alex Russell

MARCH 6, 2021

Hardware Past As Performance Prologue. Regardless, the overall story for hardware progress remains grim, particularly when we recall how long device replacement cycles are: Tap for a larger version. Recall that single-core performance most directly translates into speed on the web. Mind The Gap. Tap for a larger version.

Performance 124

Performance Network Cache Metrics 124

Tasktop

OCTOBER 26, 2021

Another example: The “Custom Ticket” type, where you’ll have versions to support different requests, such as IT Help, VM Request, Hardware Request and Refund Request. . A Model is a definition of the data package that must flow between tools, namely a fixed set of fields and possible values. Infographic: Model based integration.

Hardware 52

Hardware Virtualization Testing Tools Speed 52

SQL Performance

AUGUST 27, 2019

AMD is definitely pushing the idea that a one-socket AMD Ryzen 7002 based server is a superior replacement for nearly any two-socket Intel-based server. It will also use less power than a two-socket Intel server, with a lower hardware cost, and potentially lower licensing costs (for things like VMware). Single-Socket Database Servers.

Servers 52

Servers Benchmarking Virtualization Architecture 52

The Morning Paper

JANUARY 19, 2020

The software and hardware actually embodying the system can’t actually be seen or controlled directly (the argument is a bit like the philosophical one that we can’t directly experience an object except through our senses), instead we experience it through the various interfaces those parts expose to us.

C++ 50

C++ Systems Software Software 50

Alex Russell

OCTOBER 22, 2017

JavaScript is the single most expensive part of any page in ways that are a function of both network capacity and device speed. Thankfully, this is somewhat easier than network speeds: more than half of American mobile users are on Android devices. Global Ground-Truth. Deciding what benchmark to use for a performance budget is crucial.

Performance 68

Performance Benchmarking Network Mobile 68

Brendan Gregg

SEPTEMBER 5, 2017

Linux has been adding tracing technologies over the years: kprobes (kernel dynamic tracing), uprobes (user-level dynamic tracing), tracepoints (static tracing), and perf_events (profiling and hardware counters). Outside of EC2, many other providers are deploying on KVM. Details in the appended shortlog. [.].

Virtualization 76

Virtualization AWS Engineering Hardware 76

John McCalpin

NOVEMBER 5, 2016

The core does not have enough load bandwidth to perform all of these extra load operations at full speed. On Haswell it is definitely faster to reload the data from cache (except possibly for the case where an unaligned load crosses a 4KiB page boundary) — I have not completed the corresponding analysis on KNL.

Cache 40

Cache C++ Latency Hardware 40

Smashing Magazine

JANUARY 11, 2021

You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Note : If you use Page Speed Insights or Page Speed Insights API (no, it isn’t deprecated!),

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

You need a business stakeholder buy-in, and to get it, you need to establish a case study, or a proof of concept using the Performance API on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Start Render time, Speed Index ). Treo Sites provides competitive analysis based on real-world data.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

You need a business stakeholder buy-in, and to get it, you need to establish a case study on how speed benefits metrics and Key Performance Indicators ( KPIs ) they care about. Note : If you use Page Speed Insights (no, it isn’t deprecated), you can get CrUX performance data for specific pages instead of just the aggregates.

Performance 103

Performance Cache Metrics Network 103

High Scalability

NOVEMBER 25, 2019

To add elasticity, reliability and durability, these data centers are connected to Google Cloud platform using high speed, secure Google Interconnect network. There are many unique things but the storage layer, event-based sync is definitely worth learning, here are more details on it Egnyte object store and Egnyte Canonical File System.

Architecture 52

Architecture Cache Azure Storage 52