The Morning Paper

NOVEMBER 8, 2020

Facebook, Inc. ), OSDI’2020. The initial version of Delos went into production after eight months using a ZooKeeper-backed Loglet implementation, and then four months later it was swapped out for a new custom-built NativeLoglet that gave a 10x improvement in end-to-end latency. Virtual consensus in Delos , Balakrishnan et al.

Virtualization 126

Virtualization Latency Storage Systems 126

All Things Distributed

OCTOBER 25, 2018

It is our first Region in Africa, and we're shooting to have it ready in the first half of 2020. The new AWS Africa (Cape Town) Region will have three Availability Zones and provide lower latency to end users across Sub-Saharan Africa. What would have taken two weeks on local servers now only takes a few minutes.

AWS 167

AWS Cloud Education Programming 167

CSS - Tricks

MARCH 16, 2020

To stop reports from different websites getting mixed up, we’ll organize them like so: lukeharrison.dev 2020-01-31T18:18:12.648Z.json 2020-01-31T19:10:24.110Z.json cnn.com 2020-01-14T22:15:10.396Z.json lh.js. These are: Time to first byte - Time To First Byte identifies the time at which your server sends a response.

Google 86

Google Latency Website Metrics 86

The Morning Paper

FEBRUARY 6, 2020

arXiv 2020. On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network. Cloudburst: stateful functions-as-a-service , Sreekanti et al.,

Serverless 98

Serverless Lambda Cache Latency 98

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map. runqlat CPU scheduler latency heat map. The architecture is: While the bpftrace binary is installed on all the target systems, the bpftrace tools (text files) live on a web server and are pushed out when needed. execsnoop New processes (via exec(2)) table.

Latency 144

Latency Cache Energy Systems 144

Smashing Magazine

MARCH 25, 2021

Many large videos on the web are hand-placed in marketing pages and don’t have sophisticated media servers to deliver appropriate sizes, so I hope in the future we’ll see similar simple HTML features for video delivery that we see in responsive images.” — Scott Jehl. Similarly, unoptimized images were the leading cause of page bloat.

Media 122

Media Performance Mobile Latency 122

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. We are planning to open source DBLog in 2020 and include additional documentation. References [1] Das, Shirshanka, et al. “ All aboard the Databus!:

Database 221

Database Traffic Transportation Open Source 221

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. We are planning to open source DBLog in 2020 and include additional documentation. References [1] Das, Shirshanka, et al. “ All aboard the Databus!:

Database 206

Database Traffic Transportation Open Source 206

Brendan Gregg

JULY 4, 2021

I summarized these topics and more as a plenary conference talk, including my own predictions (as a senior performance engineer) for the future of computing performance, with a focus on back-end servers. on Upcoming Sapphire Rapids CPUs,” [link] Oct 2020 - [Liu 20] Linda Liu, “Samsung QVO vs EVO vs PRO: What’s the Difference?

Performance 52

Performance Latency Hardware Storage 52

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Clone Disk],” [link] , 2020 [Moore 20] Samuel K.

Performance 52

Performance Latency Cache Virtualization 52

Smashing Magazine

AUGUST 3, 2023

It was only in 2020, though, that Google shared its concept of Core Web Vitals and how it impacts SEO efforts. Time To First Byte (TTFB) This is the time it takes for the first piece of information from the server to reach the user’s browser. These edge servers are distributed in data centers across the globe.

Performance 78

Performance Cache Traffic Metrics 78

Percona

MAY 2, 2023

This blog was originally published in September 2020 and was updated in May 2023. Best practice tip : It is always advisable to use secondary servers for backups to avoid unnecessary performance degradation on the PRIMARY node. In today’s data-driven world, losing critical data can be catastrophic for any organization.

Best Practices 52

Best Practices Database Storage Servers 52

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)). This difference by itself doesn’t do all that much (it mainly reduces the overhead on the server-side), but it leads to most of the following points. Server Sharding and Connection Coalescing.

Network 120

Network Servers Cache Traffic 120

Smashing Magazine

SEPTEMBER 29, 2021

AVIF was introduced on the desktop version of Chrome in August 2020 with Chrome 85. Content negotiation allows the server to serve different resource formats based on what is supported by the browser. AVIF Images In The Browser. It is also supported on Chrome for Android, Opera and Firefox for desktop, and Opera for Android.

Open Source 145

Open Source Speed Website Google 145

O'Reilly

DECEMBER 2, 2019

For applications like communication between AVs, latency–how long it takes to get a response–is more likely to be a bigger limitation than raw bandwidth, and is subject to limits imposed by physics. There are impressive estimates for latency for 5G, but reality has a tendency to be harsh on such predictions.

Wireless 55

Wireless Serverless IoT Artificial Intelligence 55

Percona

SEPTEMBER 1, 2023

This post was originally published in June 2020 and was updated in September 2023. This reduction in latency ensures that applications and websites provide a more rapid and responsive user experience. Reduced Resource Usage Optimizing resource-intensive queries and configurations can lead to a reduced burden on your server.

Tuning 52

Tuning Database Performance Hardware 52

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map 5. runqlat CPU scheduler latency heat map 10. The architecture is: While the bpftrace binary is installed on all the target systems, the bpftrace tools (text files) live on a web server and are pushed out when needed. execsnoop New processes (via exec(2)) table 2.

Open Source 40

Open Source Latency Cache Energy 40

CSS Wizardry

MAY 19, 2020

pic.twitter.com/k6obyVZGZP — Harry Roberts (@csswizardry) 11 May, 2020. On a high-latency connection, this spells bad news. However, the execution of this header is bound by the response’s TTFB, which on high-latency networks can be very, very high. Put another-other way, this file is latency-bound, not bandwidth-bound.

Google 364

Google Media Latency Metrics 364

Alex Russell

MARCH 6, 2021

twitter.com/slightlylate/status/1139684093602349056 455 06:18 AM · Feb 28, 2020. A silver lining on this dark cloud is that mobile JavaScript payload growth paused in 2020. Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. How bad is it?

Performance 127

Performance Network Mobile Metrics 127

Smashing Magazine

MAY 20, 2020

2020-05-20T10:30:00+00:00. 2020-05-20T13:37:03+00:00. This metric shows how much time it takes for the server to respond with something. This metric is important, but quite vague because it can include anything — starting from server rendering time and ending up with latency problems. Anton Nemtsev.

Performance 112

Performance Metrics Best Practices Code 112

Alex Russell

JUNE 20, 2020

Absent compelling content and attentive security and performance focus, it soon retreated to the server. [6]. 86 06:16 PM · Jun 21, 2020. talking to POP and IMAP servers. Rendering text is important (think login screens), but there's no product without low-latency, adaptive codecs, networking, and camera/microphone access.

Games 64

Games Hardware Java Mobile 64

Smashing Magazine

JANUARY 6, 2020

Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2020 [PDF, Apple Pages, MS Word]. 2020-01-06T10:30:13+00:00. 2020-01-06T12:35:48+00:00. New metrics landing in Lighthouse v6 in early 2020. Vitaly Friedman. Web performance is a tricky beast, isn’t it? Large view.

Performance 112

Performance Cache Servers Network 112

Smashing Magazine

JANUARY 11, 2021

New metrics landed in Lighthouse v6 in early 2020. In the end, it’s not the load events or server response times that define the experience, but the perception of how snappy the interface feels. It used to provide an insight into how quickly the server outputs any data. Large preview ). Large preview ). Choose the right metrics.

Performance 145

Performance Cache Media Metrics 145

Adrian Cockcroft

NOVEMBER 18, 2024

They are mostly customer stories, encouragement to move to Graviton, and minor tweaks to the AWS sustainability story that I originally wrote for the Well Architected Guide in 2020 (it was first released over a year later). Some of my slides were still in the decks I saw last year. Jason OMalley, Sr.

AWS 98

AWS Energy Lambda Government 98