Alex Russell

MARCH 6, 2021

TL;DR: A lot has changed since 2017 when we last estimated a global baseline resource per-page resource budget of 130-170KiB. To update our global baseline from 2017, we want to update our priors on a few dimensions: The evolved device landscape. Modern network performance and availability. The Moto G4 , for example. Hard Reset.

Performance 124

Performance Network Cache Metrics 124

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). At my employer we sometimes use SR-IOV for direct network interface access, and NVMe for direct disk access. x series.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

JULY 4, 2021

AWS Graviton2); for memory with the arrival of DDR5 and High Bandwidth Memory (HBM) on-processor; for storage including new uses for 3D Xpoint as a 3D NAND accelerator; for networking with the rise of QUIC and eXpress Data Path (XDP); and so on. I also wrote about these topics in detail for my recent [Systems Performance 2nd Edition] book.

Performance 52

Performance Latency Hardware Storage 52

Alex Russell

JANUARY 30, 2024

It's time once again to update our priors regarding the global device and network situation. 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. What's changed since last year? and 75KiB of JavaScript.

Performance 90

Performance Network Mobile Speed 90

Scalegrid

JULY 13, 2020

Recognized as the fastest growing database by popularity, PostgreSQL was named the DBMS of the year in both 2018 and 2017 by DB-Engines, and continues to grow in popularity in 2019. Oracle support for hardware and software packages is typically available at 22% of their licensing fees. In fact, PostgreSQL is so popular, 11.5%

Open Source 244

Open Source Tuning C++ Database 244

Brendan Gregg

FEBRUARY 28, 2023

Make sure your system can handle next-generation DRAM,” [link] , Nov 2011 [Hruska 12] Joel Hruska, “The future of CPU scaling: Exploring options on the cutting edge,” [link] , Feb 2012 [Gregg 13] Brendan Gregg, “Blazing Performance with Flame Graphs,” [link] , 2013 [Shimpi 13] Anand Lal Shimpi, “Seagate to Ship 5TB HDD in 2014 using Shingled Magnetic (..)

Performance 52

Performance Latency Cache Virtualization 52

Sutter's Mill

FEBRUARY 13, 2017

” This contains updated and new material that reflects the latest C++ standards and compilers, with a focus to using modern C++11/14/17 effectively on modern hardware and memory architectures. On April 25-27, I’ll be in Stockholm (Kista) giving a three-day seminar on “High-Performance and Low-Latency C++.”

Latency 51

Latency C++ Hardware Performance 51

Percona

JULY 7, 2023

Also, in general terms, a high availability PostgreSQL solution must cover four key areas: Infrastructure: This is the physical or virtual hardware database systems rely on to run. Without enough infrastructure (physical or virtualized servers, networking, etc.), there cannot be high availability. If so, what are the legal liabilities?

Availability 81

Availability Open Source Architecture Database 81

Tim Kadlec

JANUARY 9, 2019

Sites that use an excess of resources, whether on the network or on the device, don’t just cause slow experiences, but can leave entire groups of people out. I recently profiled a page on a Pixel 2 (released in 2017), and an Alcatel 1x (released in 2018). Hardware gets better, sure. On the Alcatel 1x, it took ~65 seconds.

Performance 111

Performance Energy Internet Internet 111

Smashing Magazine

JANUARY 21, 2021

After the latest redesign in late 2017, it was Ilya Pukhalski on the JavaScript side of things (part-time), Michael Riethmueller on the CSS side of things (a few hours a week), and yours truly, playing mind games with critical CSS and trying to juggle a few too many things. Moving From Automated Critical CSS Back To Manual Critical CSS.

Performance 145

Performance Cache Mobile Network 145

Percona

AUGUST 15, 2023

This blog was originally published in February 2017 and was updated in August 2023. Network Connectivity: Establish a reliable network connection between the primary and replica servers. MySQL Version: Make sure that the MySQL versions on the primary and replica servers are compatible for replication.

Servers 52

Servers Database Availability Traffic 52

Rigor

MARCH 20, 2018

I recently was asked the following question by an online retailer: “Why should I invest in monitoring the user experience when I already have monitoring for our database, infrastructure, app server, and network?”. Instead of asking that question, I asked them this: “Are you a network or hosting provider?

Monitoring 40

Monitoring Retail Ecommerce Infrastructure 40

Alex Russell

APRIL 29, 2021

Real-time network protocols for enabling videoconferencing, desktop sharing, and game streaming applications. Modern, asynchronous network APIs that dramatically improve performance in some situations. WebGL 2 launched for other platforms on Chrome and Firefox in 2017. is access to hardware devices. Delayed five years.

Media 145

Media Games Education Engineering 145

Alex Russell

OCTOBER 22, 2017

We constrain ourselves to a real-world baseline device + network configuration to measure progress. — Alex Russell (@slightlylate) October 4, 2017. Budgets are scaled to a benchmark network & device. For developers and decision makers with fast phones on fast networks this is a double-whammy of hidden costs.

Performance 68

Performance Benchmarking Network Mobile 68

O'Reilly Software

APRIL 4, 2018

As Tyler Akiadu, from Google, explained in his Strata NY 2017 presentation, “ Foundations of streaming SQL ”: “Streams are the in-motion form of data, both bounded and unbounded.” It enables unbounded scalability as more commodity or specialized hardware can be seamlessly added to existing clusters.

Architecture 80

Architecture Scalability Google Operating System 80

Adrian Cockcroft

DECEMBER 28, 2017

I wanted a system that still works manually and during network outages, and didn’t really want to have a separate hub to gateway the signal. they launched in October 2017, and were founded by people with experience at Nest (thermostats) and August (locks). Eventually I discovered a new option called Noon ( noonhome.com )?—?they

IoT 40

IoT Hardware Energy Network 40

The Morning Paper

JANUARY 19, 2020

STELLA: report from the SNAFU-catchers workshop on coping with complexity , Woods 2017, Coping with Complexity workshop. Today’s choice is a report from a 2017 workshop convened with that title, and recommended to me by John Allspaw – thank you John! Take a trivial example with three components A, B, and C.

C++ 50

C++ Systems Software Software 50

Smashing Magazine

JANUARY 7, 2019

If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled network (e.g. To make the performance impact more visible, you could even introduce 2G Tuesdays or set up a throttled 3G network in your office for faster testing. 150ms RTT, 1.5 Mbps down, 0.7 Mbps up) with a throttled CPU (5× slowdown).

Performance 103

Performance Cache Metrics Network 103

Brendan Gregg

AUGUST 8, 2017

90491 N|rnberg (Germany) Consulting+Networking+Programming+etc'ing 42. They are demand on the system, albeit for software resources rather than hardware resources. ## Decomposing Linux load averages Can the Linux load average value be fully decomposed into components? Network I/O? Yes, I'd say so. They aren't idle.

Latency 111

Latency Metrics C++ Systems 111

The Netflix TechBlog

DECEMBER 23, 2020

In addition to the default Docker namespaces (mount, network, UTS, IPC, and PID), we employ user namespaces for added layers of isolation. Road to Implementation We began work to enable user namespaces in early 2017. Notice how no privilege escalation mechanism was used to perform any of these actions.

Media 286

Media Metrics Systems Processing 286

All Things Distributed

DECEMBER 12, 2018

In April 2017, Amazon Web Services announced that it would launch a new AWS infrastructure region Region in Sweden. We launched Edge Network locations in Denmark, Finland, Norway, and Sweden. If the solution works as envisioned, Telenor Connexion can easily deploy it to production and scale as needed without an investment in hardware.

AWS 124

AWS Cloud Games Serverless 124