Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. There's also a test and println() in the loop to, hopefully, convince the compiler not to optimize-out an otherwise empty loop.

Speed 126

Speed Java AWS Virtualization 126

The Netflix TechBlog

APRIL 17, 2019

Netflix headquarters circa 2014. AOM has produced the reference software for AV1, which is called libaom and is available online. SVT-AV1 uses parallelization at several stages of the encoding process, which allows it to adapt to the number of available cores including newest servers with significant core count.

Open Source 166

Open Source Scalability Speed Efficiency 166

Dynatrace

MAY 31, 2021

Since Kubernetes emerged in 2014, it has become a popular solution for scaling, managing, and automating the deployments of containerized applications in distributed environments. At its start in 2013, Docker was mainly used by developers as a sandbox for testing purposes. What are containers, and why are they so hot?

Virtualization 133

Virtualization DevOps Infrastructure Cloud 133

All Things Distributed

OCTOBER 25, 2018

The new AWS Africa (Cape Town) Region will have three Availability Zones and provide lower latency to end users across Sub-Saharan Africa. We already have 55 Availability Zones across 19 infrastructure regions that customers can use today. Traditionally, it cost $300 to $500 to do a single resistance test.

AWS 167

AWS Cloud Education Programming 167

The Morning Paper

OCTOBER 1, 2020

That app is subject to “voluminous (public) user feedback”, and in the 2014 floating-point based calculator, bug reports relating to inaccurate results, unnecessary zeroes, and the like. Available in open source , the resulting library is packaged in the Android Calculator app, with over 500 million installations. Deciding equality.

Java 143

Java Hardware Open Source Testing 143

Alex Russell

APRIL 29, 2021

This post mines publicly available data on the pace of compatibility fixes and feature additions to assess the claim. Thanks to the Web Platform Tests project and wpt.fyi , we have the makings of an answer for the first: Tests that fail only in a given browser. Count of APIs available from JavaScript by Web Confluence.

Media 145

Media Games Education Engineering 145

SQL Performance

MAY 16, 2019

If both sort and no-sort alternatives are available, the optimizer will make a cost-based choice. For SQL Server 2014 and later, the uniquifier is correctly omitted for unique indexes, but the one extra byte for the internal bit flag is retained. Test ; END ; GO. DMLRequestSort Conditions. DROP TABLE dbo. CREATE TABLE dbo.

Cache 67

Cache Servers Testing Storage 67

Brendan Gregg

NOVEMBER 29, 2017

At Netflix, we've been using these technologies as they've been made available for instance types in the AWS EC2 cloud. It's all a bit confusing, and I wrote about this in 2014: [Xen Modes]. When I joined Netflix in 2014, we had begun transitioning from PV to HVM (PVHVM). This recommendation quickly became out of date.

Virtualization 111

Virtualization AWS Hardware Storage 111

All Things Distributed

DECEMBER 12, 2018

Today, I'm happy to announce that the AWS Europe (Stockholm) Region, our 20th Region globally, is now generally available for use by customers. With this launch, AWS now provides 60 Availability Zones, with another 12 zones and four Regions expected to come online by 2020 in Bahrain, Cape Town, Hong Kong, and Milan.

AWS 124

AWS Cloud Games Serverless 124

MachMetrics

JUNE 16, 2020

Google made SSL use a ranking factor way back in 2014, and since Chrome 68, a “Not Secure” warning appears next to the URL of sites that aren’t using HTTPS. Even better, you unlock protocols and compression platforms that aren’t available to those using HTTP. To be completely honest, you almost have to use it.

Speed 86

Speed Latency Google Website 86

Brendan Gregg

AUGUST 29, 2021

total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. Smaller File Test For further confirmation, I collected the same outputs for a 32 Gbyte file upload. total used free shared buff/cache available Mem: 64414 18421 11218 5 34773 45407 Swap: 0 0 0. Nothing odd here. ## 5.

Cache 105

Cache C++ AWS Latency 105

SQL Performance

MAY 1, 2019

The following demo script should be run on a development instance in a new test database set to use the SIMPLE recovery model. For SQL Server 2014 and later , the transition point is 950 rows for this table. An example call stack is shown below: The essence of the test is: The insert must be for more than 250 rows. DETAILED'. )

Servers 47

Servers Database Testing Performance 47

All Things Distributed

JULY 20, 2015

A cluster is just a pool of compute resources available to a customer’s applications. The agent is written in Go, has a minimal footprint, and is available on GitHub under an Apache license. This architecture affords Amazon ECS high availability, low latency, and high throughput because the data store is never pessimistically locked.

Latency 166

Latency Architecture AWS Open Source 166

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. There's also a test and println() in the loop to, hopefully, convince the compiler not to optimize-out an otherwise empty loop.

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

OCTOBER 27, 2021

The eye-tracking methodology can be extremely valuable for usability tests since it records the journey without interfering with the users’ natural behavior. Imagine, for example, that you test a prototype but discover that users are not interacting with the interface how they are supposed to. Mariana Macedo. 2021-10-27T10:00:00+00:00.

Mobile 112

Mobile Website Hardware Social Media 112

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. There's also a test and println() in the loop to, hopefully, convince the compiler not to optimize-out an otherwise empty loop.

Speed 52

Speed Java AWS Virtualization 52

Alex Russell

JUNE 22, 2022

Defenders of Apple's monopoly offer hard-to-test claims, but many boil down to the idea that Apple's product is inferior by necessity. There's no point in recommending a better browser because none is available. In 2014, Apple would have enjoyed a profit margin of 50% if it had spent half a billion on browser engineering.

Engineering 110

Engineering Traffic Government Google 110

Scalegrid

JULY 17, 2020

2014) added support for JSONB data type. Why not just create a table with a JSONB blob and get rid of all columns like the schema below: CREATE TABLE test(id int, data JSONB, PRIMARY KEY (id)); At the end of the day, columns are still the most efficient technique to work with your data. Managing High Availability in PostgreSQL.

Storage 321

Storage Database Efficiency Processing 321

Enprowess

JANUARY 11, 2022

With a myriad of options available out there, we have compiled a list of top frontend frameworks out there to help you out. Many front end frameworks are available in different languages. Of all the available technologies, JavaScript popularity has shot up exponentially. Let’s begin!!

Virtualization 64

Virtualization Website Speed Mobile 64

SQL Performance

MARCH 17, 2020

Back in 2014, I wrote an article called Performance Tuning the Whole Query Plan. Test Environment. It has 32GB RAM, with 24GB available to the SQL Server 2019 instance. Each test result represents the best of ten runs, with all required data and index pages in memory. The cost threshold for parallelism is set to 50.

Servers 86

Servers Tuning Database Efficiency 86

Sutter's Mill

MARCH 11, 2024

Rules like those summarized in the Appendix would have prevented (at compile time, test time or run time) most of the past CVEs I’ve reviewed in the type, bounds, and initialization categories, and would have prevented many of the lifetime CVEs. Log4j ) or even programming languages (e.g., best effort” analysis).

C++ 139

C++ Programming Code Java 139

The Morning Paper

JANUARY 23, 2020

Today we’ll be digging into the analysis of an incident that took place at Etsy on December 4th, 2014. The shop had been closed so no data was available. During incident management, prefer peer review of any code changes to gain confidence as opposed to automated tests or other procedures. " – wikipedia.

Internet 53

Internet Internet Cache Engineering 53

Brendan Gregg

NOVEMBER 28, 2017

At Netflix, we've been using these technologies as they've been made available for instance types in the AWS EC2 cloud. It's all a bit confusing, and I wrote about this in 2014: [Xen Modes]. When I joined Netflix in 2014, we had begun transitioning from PV to HVM (PVHVM). This recommendation quickly became out of date.

Virtualization 40

Virtualization AWS Hardware Storage 40

The Morning Paper

NOVEMBER 21, 2019

” The paper ‘ Designing and deploying online field experiments ’ (Bakshy 2014) describes the language and its usage at Facebook (one for The Morning Paper backlog?). When a fully randomised experiment isn’t possible or desirable, random assignment can be conditioned on some feature of the unit under test.

Programming 52

Programming Internet Internet Design 52

Percona

JUNE 4, 2023

Critical features of MariaDB include robust security features like encryption at rest and in transit, user authentication, and role-based access control (RBAC), as well as high-performance query execution, advanced indexing techniques, and replication, clustering, and sharding, ensuring scalability and high availability.

Open Source 52

Open Source Servers Storage Scalability 52

Brendan Gregg

AUGUST 29, 2021

free Also from the 60-second checklist: # free -m total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0 There's not much memory left, 349 Mbytes, but more interesting is the amount in the buffer/page cache: 48,643 Mbytes (48 Gbytes). Nothing odd here. ## 5. 41 33680 53408 0 78 100.0%

Cache 40

Cache C++ AWS Systems 40

Enprowess

SEPTEMBER 20, 2021

Talent availability. Created by Evan You, Vue had its first public appearance in 2014. It has a vast community that explains online courses, many available tutorials, articles, and three times more questions on Stack overflow. Vue vs React: Talent Availability. In this article, I will compare React.js and Vue.js

Open Source 52

Open Source Mobile Scalability Google 52

SQL Performance

APRIL 23, 2019

SQL Server 2014 added the ability to perform parallel batch-mode grouped aggregation within a single Hash Match Aggregate operator. instructions are available. Still, when the plan generally qualifies for grouped aggregate pushdown, both pushdown (fast) and non-pushdown (slow) code paths are made available. CREATE TABLE dbo.

Servers 67

Servers Testing Metrics Storage 67

KeyCDN

JUNE 20, 2019

50% off) Free shipping Buy 1 get 1 Free, just pay shipping Free bonus included with every purchase Scarcity tactics can also be employed if you’re running a promotion for a limited time or you only have a certain amount of stock available for a specific item. Here are a few common offers you can use: On sale (e.g.

Ecommerce 41

Ecommerce Speed Website Mobile 41

Abhishek Tiwari

NOVEMBER 3, 2018

They often get blindsided by vendor’s pitch and end-up making decision based on some fancy demos (see my post from 2014 on Adobe AEM ). Circa 2014, I was working with a big Japanese automotive brand in Australia. However, it is important to note that JAMstack can serve both static as well as dynamic content.

Systems 63

Systems Cache Website Network 63

Alex Russell

MARCH 6, 2021

Devices and networks have evolved too: Alex Russell @slightlylate An update on mobile CPUs and the Performance Inequality Gap: Mid-tier Android devices (~$300) now get the single-core performance of a 2014 iPhone and the multi-core perf of a 2015 iPhone. Modern network performance and availability. Here begins our 2021 adventure.

Performance 124

Performance Network Cache Metrics 124

SQL Performance

MAY 29, 2019

It can be activated from SQL Server 2008 to 2014 inclusive using documented trace flag 610. As a consequence, a suitable insert with TABLOCK may still qualify for minimal logging via FastLoadContext if it fails the detailed RowsetBulk tests. Test ; END ; GO. CHECKPOINT ; GO. -- Main test. DROP TABLE dbo. CREATE TABLE dbo.

Cache 64

Cache Testing Servers Code 64

Scalegrid

AUGUST 15, 2019

In 2014, we discussed 4 of the top MongoDB GUIs: MongoVue, MongoHub, RockMongo, and Robo 3T (formerly Robomongo), and again in 2016: MongoDB Compass, Robo 3T, Studio 3T, and MongoBooster. It’s further enhanced by an in-place code editor which is also available in all three views. MongoDB Compass.

Database 40

Database Servers Monitoring Availability 40

Enprowess

SEPTEMBER 28, 2021

is a progressive JavaScript framework created by Even You in 2014. With React to test and debug your project , you need add-ons but with angular, testing and debugging tools are by default bundled with the framework. . is extensible by using the various available plugins. . Source: [link]. Backbone JS. Source: [link].

Open Source 52

Open Source Mobile Entertainment Virtualization 52

Smashing Magazine

MARCH 23, 2020

The W3C’s CSS Shapes Module Level 1 has been a Candidate Recommendation recommendation since 2014, and all contemporary desktop and mobile browsers have implemented its shape-outside, shape-margin, and shape-image-threshold properties. There are three experimental properties available for CSS Reflections. Large preview ).

Design 107

Design Media Energy Availability 107

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

O'Reilly

JULY 25, 2023

To provide some coherence to the music, I decided to use Taylor Swift songs since her discography covers the time span of most papers that I typically read: Her main albums were released in 2006, 2008, 2010, 2012, 2014, 2017, 2019, 2020, and 2022. This choice also inspired me to call my project Swift Papers. But still, I liked how Moment.js

Programming 98

Programming Code Design Benchmarking 98