Smashing Magazine

OCTOBER 31, 2023

Still, there’s nothing in there to tell us about the data Lighthouse is using to evaluate metrics. Different tools make different assumptions using different data , whether we are talking about Lighthouse, PageSpeed Insights, or commercial services like DebugBear. That’s what this article is about. But it comes with caveats.

Speed 99

Speed Google Website Metrics 99

Adrian Cockcroft

APRIL 5, 2023

by Adrian Cockcroft Three windows lined up to let the light in through a door in the Madrassa, Marrakech — Picture by Adrian The existing approaches to carbon measurement provide delayed data for carbon accounting that is more akin to billing information in the way it is structured and queried.

Energy 52

Energy Metrics Cloud Operating System 52

The Morning Paper

DECEMBER 8, 2019

Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. The beauty of persistent memory is that we can use memory layouts for persistent data (with some considerations for volatile caches etc.

Hardware 56

Hardware Programming Media Storage 56

Dotcom-Montior

NOVEMBER 24, 2021

This complexity is “hidden” to the end user, like how an API (Application Programming Interface) operates, whether that is an actual user or another computer. These systems can include physical servers, containers, virtual machines, or even a device, or node, that connects and communicates with the network. Three-Tier.

Systems 74

Systems Monitoring Hardware Network 74

SQL Performance

FEBRUARY 26, 2020

Organizations are taking advantage of having managed backups, lots of built-in security features, an uptime SLA of 99.99%, and an always up-to-date environment where they are no longer responsible for patching SQL Server or the operating system. One size does not always fit all. Managed Instance provides two tiers for performance.

Azure 63

Azure Performance Storage Latency 63

Adrian Cockcroft

NOVEMBER 18, 2019

AWS Developer Relations on how the shift from Robot Operating System (ROS) 1 to ROS 2 will change the landscape for all robot lovers. OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto.

Open Source 40

Open Source AWS Lambda Serverless 40

Adrian Cockcroft

NOVEMBER 18, 2019

AWS Developer Relations on how the shift from Robot Operating System (ROS) 1 to ROS 2 will change the landscape for all robot lovers. OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto.

Open Source 40

Open Source AWS Lambda Serverless 40

HammerDB

MAY 5, 2019

However in the Skylake microarchitecture (you can see a list of CPUs here ) the PAUSE instruction changed and in the documentation it says “the latency of the PAUSE instruction in prior generation microarchitectures is about 10 cycles, whereas in Skylake microarchitecture it has been extended to as many as 140 cycles.”

Testing 48

Testing Tuning Latency Storage 48

O'Reilly

DECEMBER 2, 2019

The specifications are impressive: 5G will provide a peak data rate of up to 20 Gbps (with 100 Mbps of “ user experienced data rate ”) to mobile devices: cell phones, smart cars, and a lot of devices that haven’t been invented yet. Reliability will be an even bigger problem than latency. So where is 5G useful?

Wireless 53

Wireless Serverless IoT Artificial Intelligence 53

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. The code and data of the kernel itself can also be used as a timing channel. Requirement 4 : State flushing must be padded to its worst-case latency.

Hardware 44

Hardware Cache Latency Speed 44

The Netflix TechBlog

SEPTEMBER 24, 2021

As described by the white paper Apple ProRes ( link ), the target data rate of the Apple ProRes HQ for 1920x1080 at 29.97 Uploading and downloading data always come with a penalty, namely latency. There are existing distributed file systems for the cloud as well as off-the-shelf FUSE modules for S3. is 220 Mbps.

Cloud 237

Cloud Media Storage Cache 237

SQL Server According to Bob

JANUARY 11, 2020

Subsystem / Path The ​​ I/O subsystem or path ​​ includes ​​ those ​​ components ​​ that are ​​ used to support an I/O operation. In ​​ other words, ​​ a formula is applied ​​ to a given set of bytes.

Servers 40

Servers Cache Database Media 40

SQL Server According to Bob

JANUARY 11, 2020

To ensure data integrity for our customers who are running SQL Server, it is important that I/O environments provide appropriate functionality. Atomicity A transaction must be an atomic unit of work; either all of its data modifications are performed or none of them are performed.

Servers 40

Servers Cache Media Hardware 40

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.

Cache 40

Cache Servers Network Design 40

All Things Distributed

MARCH 11, 2016

Failures are a given and everything will eventually fail over time: from routers to hard disks, from operating systems to memory units corrupting TCP packets, from transient errors to permanent failures. Encryption is a key mechanism for customers to ensure that they are in full control over who has access to their data.

AWS 144

AWS Hardware Retail Virtualization 144

All Things Distributed

OCTOBER 2, 2017

The success of our early results with the Dynamo database encouraged us to write Amazon's Dynamo whitepaper and share it at the 2007 ACM Symposium on Operating Systems Principles (SOSP conference), so that others in the industry could benefit. Durable and Highly-Available – DynamoDB maintains data durability and 99.99

Internet 128

Internet Internet AWS Performance 128