Dynatrace

JUNE 15, 2023

Cloud application security is a combination of policies, processes, and controls that aim to reduce the risk of exposing cloud-based applications to compromise or failure from external or internal threats. This process can delay deployments or cause developers to skip security testing completely to meet project deadlines.

Cloud 173

Cloud Open Source Architecture Monitoring 173

Brendan Gregg

SEPTEMBER 5, 2017

What follows are topics that may be of interest to anyone looking to migrate their systems and skillset: scan these to find topics that interest you. ## ZFS ZFS is available for Linux via the [zfsonlinux] and [OpenZFS] projects, and more recently was included in Canonical's Ubuntu Linux distribution: Ubuntu Xenial 16.04 LTS (April 2016).

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

FEBRUARY 28, 2023

This talk originated from my updates to Systems Performance 2nd Edition , and this was the first time I've given this talk in person! CXL in a way allows a custom memory controller to be added to a system, to increase memory capacity, bandwidth, and overall performance.

Performance 52

Performance Latency Cache Virtualization 52

Percona

SEPTEMBER 1, 2023

This blog was originally published in October 2017 and was updated in September 2023. Database architects working with MongoDB encounter specific challenges related to database systems and system growth. Sharding is a preferred approach for database systems facing substantial growth and needing high availability.

Best Practices 71

Best Practices Traffic Database Servers 71

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. Advances in browser content processing. Hardware Past As Performance Prologue.

Performance 124

Performance Network Cache Metrics 124

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Microbenchmark os::javaTimeMillis() on both systems.

Speed 126

Speed Java AWS Virtualization 126

SQL Server According to Bob

DECEMBER 18, 2018

Durability: “In database systems , durability is the ACID property which guarantees transactions that have committed will survive permanently. For example, if a flight booking reports that a seat has successfully been booked, then the seat will remain booked even if the system crashes.” – [link]. Starting with the Linux 4.18

Servers 90

Servers Media Cache Storage 90

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. Can you afford the necessary hardware, software, and operational costs of maintaining a PostgreSQL HA solution? there cannot be high availability.

Availability 83

Availability Open Source Architecture Database 83

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

Alex Russell

JUNE 19, 2020

During the port from Wordpress I've also been pleasantly surprised at how quick the build process is, particularly given the ways build-time work has grown as I've added features like comment imports. Details about build hardware, OS, and template configuration are particularly useful.

Cache 49

Cache Hardware Speed Cloud 49

SQL Performance

JULY 16, 2019

A close monitoring of the hardware enthusiast community, including many of the most respected hardware analysts and reviewers paints an even more dire picture about Intel in the server processor space. This made it easier for database professionals to make the case for a hardware upgrade, and made the typical upgrade more worthwhile.

Servers 46

Servers Hardware Architecture Retail 46

Alex Russell

FEBRUARY 21, 2023

is astonishingly dense with delayed features, inadvertantly emphasising just how far behind WebKit has remained for many years and how effective the Blink Launch Process has been in allowing Chromium to ship responsibly while consensus was witheld in standards by Apple. Regardless, Safari 16.4 31st : Web Share changes Feb.

Energy 79

Energy Games Engineering Design 79

Percona

AUGUST 15, 2023

This blog was originally published in February 2017 and was updated in August 2023. MySQL replication is a process in which data from a primary MySQL database is copied and sent to one or more secondary databases, known as replicas. Start the replica server’s replication process. What is MySQL Replication?

Servers 52

Servers Database Availability Traffic 52

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. Meanwhile, budget segment devices have finally started to see improvement ( as this series predicted ), thanks to hand-me-down architecture and process node improvements.

Performance 90

Performance Network Mobile Speed 90

O'Reilly Software

APRIL 4, 2018

We live in the era of the connected experience, where our daily interactions with the world can be digitized, collected, processed, and analyzed to generate valuable insights. Accumulating all this data to process overnight is not an option anymore. Do we need to process each record individually? Process tolerance.

Architecture 80

Architecture Scalability Google Operating System 80

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.

Performance 145

Performance Cache Mobile Network 145

Alex Russell

APRIL 29, 2021

After 20 years of neck-in-neck competition, often starting from common code lineages, there just isn't that much left to wring out of the system. Consistent improvement is the name of the game, and it can still have positive impacts, particularly as users lean on the system more heavily over time. Media Session API. Keyboard Lock API.

Media 145

Media Games Education Engineering 145

CSS Wizardry

APRIL 2, 2018

Here are my top five most-played tracks of 2017’s 70,000 minutes: However, after recently discussing one of my all-time favourite tracks with a friend, and, bizarrely enough, with Nu:Tone himself, I decided that I wanted to start taking my listening a little more seriously. At home, I’m used to just streaming Spotify through an Amazon Echo.

Website 108

Website Media Hardware Monitoring 108

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Microbenchmark os::javaTimeMillis() on both systems.

Speed 40

Speed Java AWS Virtualization 40

The Morning Paper

JANUARY 19, 2020

STELLA: report from the SNAFU-catchers workshop on coping with complexity , Woods 2017, Coping with Complexity workshop. “Coping with complexity” is about as good a three-word summary of the systems and software challenges facing us over the next decade as I can imagine. A digression on complexity budgets.

C++ 50

C++ Systems Software Software 50

Brendan Gregg

AUGUST 8, 2017

Linux load averages are "system load averages" that show the running thread (task) demand on the system as an average number of running plus waiting threads. This measures demand, which can be greater than what the system is currently processing. then your system is idle. - cat /proc/loadavg. 42/3411 43603.

Latency 111

Latency Metrics C++ Systems 111

SQL Performance

MARCH 17, 2020

It comes set to SQL Server 2008 compatibility (level 100), but we will start with a more modern setting of SQL Server 2017 (level 140): ALTER DATABASE StackOverflow2013 SET COMPATIBILITY_LEVEL = 140 ; The tests were performed on my laptop using SQL Server 2019 CU 2. The Sort only has 19 rows to process, so it consumes only 1ms or so.

Servers 86

Servers Tuning Database Efficiency 86

The Netflix TechBlog

DECEMBER 23, 2020

By Fabio Kung , Sargun Dhillon , Andrew Spyker , Kyle , Rob Gulewich, Nabil Schear , Andrew Leung , Daniel Muino, and Manas Alekar As previously discussed on the Netflix Tech Blog, Titus is the Netflix container orchestration system. It runs a wide variety of workloads from various parts of the company?—?everything

Media 286

Media Metrics Systems Processing 286

Alex Russell

OCTOBER 22, 2017

— Alex Russell (@slightlylate) October 4, 2017. Tools and CI systems help them monitor progress & prevent regressions. Answering it requires an understanding of how browsers process resources (which differs by type) and the concept of the critical path. Processing input (including scrolling w/ active touch listeners).

Performance 68

Performance Benchmarking Network Mobile 68

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

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 104

Performance Cache Network Metrics 104