Alex Podelko

JUNE 12, 2019

My post Good Times for Load Testing was published in 2014. I am not so upbeat as I was in 2014. In 2014 I was preparing a presentation about load testing tools and criteria for their selection. It is difficult to believe that 5 years passed… Are times still good for load testing? Well, yes and no. Open Source.

Testing 243

Testing Open Source Testing Tools Performance Testing 243

The Netflix TechBlog

DECEMBER 10, 2019

By Adam Wang , Andy Swan , Raja Senapati , Shilpa Jois , Anjali Chablani , Deepa Krishnan , Vidya Sundaram , and Casey Wilms You can also check out highlights from our past events: May 2019 , November 2018 , March 2018 , August 2017 , January 2017 , May 2016 , November 2015 , March 2015 , February 2014 & August 2014.

Innovation 130

Innovation Mobile Technology Technology 130

The Netflix TechBlog

DECEMBER 10, 2019

By Adam Wang , Andy Swan , Raja Senapati , Shilpa Jois , Anjali Chablani , Deepa Krishnan , Vidya Sundaram , and Casey Wilms You can also check out highlights from our past events: May 2019 , November 2018 , March 2018 , August 2017 , January 2017 , May 2016 , November 2015 , March 2015 , February 2014 & August 2014.

Innovation 130

Innovation Mobile Technology Technology 130

ACM Sigarch

MARCH 18, 2019

Computer systems, from the Internet-of-Things devices to datacenters, are complex and optimizing them can enhance capability and save money. Developing simulators, however, is time-consuming and requires a great deal of infrastructure development regarding a prospective system. Answered in Part 2.). Lazowska, et al.

Systems 60

Systems Latency Performance Analytics 60

Brendan Gregg

JULY 4, 2021

I also wrote about these topics in detail for my recent [Systems Performance 2nd Edition] book. TCP Extensions for Multipath Operation with Multiple Addresses,” [link] Mar 2020 - [Gregg 20] Brendan Gregg, “Systems Performance: Enterprise and the Cloud, Second Edition,” Addison-Wesley, 2020 - [Hruska 20] Joel Hruska, “Intel Demos PCIe 5.0

Performance 140

Performance Latency Hardware Storage 140

Dynatrace

NOVEMBER 29, 2022

With a skeleton staff of 7 on a on 24×7 schedule, we increased the number releases from 2 to 26 per year and reduced production bugs by 93% since 2014. As a result, IT teams can automate and manage processes across on-premises and cloud-based systems, or between multiple cloud services to prevent vendor lock-in.

Infrastructure 173

Infrastructure Code Cloud DevOps 173

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. Ford, et al., “TCP

Performance 110

Performance Latency Cache Virtualization 110

Brendan Gregg

APRIL 14, 2022

offer letter logo (2014) flame graphs (2014) eBPF tools (2014-2019) PMC analysis (2017) my pandemic-abandoned desk (2020); office wall I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive work culture. It was the most challenging job among those I interviewed for. Thank you.

Java 52

Java Cache Cloud AWS 52

ACM Sigarch

MARCH 25, 2019

The M/M/1 queue also assumes that the arrival rate is not affected by the unbounded number of tasks in the queue (called an “open system”). He is a fellow of IEEE and the ACM, serves as Chair of the Computer Community Consortium (2018-20) and served as Wisconsin Computer Sciences Department Chair 2014-17.

Systems 53

Systems Latency Performance C++ 53

Dynatrace

AUGUST 16, 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. Component issue statistics from configurable issue tracking queries integrated with tracking systems like GitHub.

Software 246

Software Software Open Source Azure 246

Brendan Gregg

JULY 14, 2019

BPF (eBPF) tracing is a superpower that can analyze everything, and I'll show you how in my upcoming book BPF Performance Tools: Linux System and Application Observability , coming soon from Addison Wesley. I've been helping lead BPF observability since 2014, and I'm a major contributor and maintainer for the front-ends. . -

Systems 40

Systems Performance Education Technology 40

Brendan Gregg

JULY 2, 2021

This is also applicable for people adding it to their own in-house monitoring systems. You likely already have agents running on all your customer systems. There are so many options it's really your own preference based on your existing system and customer environments. cachestat File system cache statistics line charts.

Latency 145

Latency Cache Energy Systems 145

Dynatrace

APRIL 5, 2021

The 2014 launch of AWS Lambda marked a milestone in how organizations use cloud services to deliver their applications more efficiently, by running functions at the edge of the cloud without the cost and operational overhead of on-premises servers. Dynatrace news. What is AWS Lambda? Where does Lambda fit in the AWS ecosystem?

Lambda 180

Lambda AWS Serverless Hardware 180

Dynatrace

JUNE 15, 2023

If your application runs on servers you manage, either on-premises or on a private cloud, you’re responsible for securing the application as well as the operating system, network infrastructure, and physical hardware. What are some key characteristics of securing cloud applications?

Cloud 177

Cloud Open Source Architecture Monitoring 177

Adrian Cockcroft

APRIL 24, 2023

We leased a Nissan Leaf 2011–2014, bought a 2010 Tesla Roadster in 2013, leased a Fiat 500e 2014–2017, and bought a Tesla Model 3 Performance in early 2020. Hertz seem to be investing a lot, and I expect they will get their systems and apps figured out to make the experience smoother over time.

Infrastructure 98

Infrastructure Code Performance Systems 98

Dynatrace

NOVEMBER 8, 2021

Organizations use APM to ensure system availability, optimize service performance and response times, and improve user experiences. Dynatrace’s applications and microservices monitoring for cloud-native environments extend observability beyond system availability and service performance and response times.

Artificial Intelligence 232

Artificial Intelligence Monitoring Infrastructure Cloud 232

Dynatrace

NOVEMBER 22, 2021

When Amazon launched AWS Lambda in 2014, it ushered in a new era of serverless computing. Amazon Web Services (AWS) and other cloud platforms provide visibility into their own systems, but they leave a gap concerning other clouds, technologies, and on-prem resources. Dynatrace news. Dynatrace is making the value of AI real.

AWS 229

AWS Lambda Artificial Intelligence Serverless 229

Brendan Gregg

JULY 4, 2021

I also wrote about these topics in detail for my recent [Systems Performance 2nd Edition] book. TCP Extensions for Multipath Operation with Multiple Addresses,” [link] Mar 2020 - [Gregg 20] Brendan Gregg, “Systems Performance: Enterprise and the Cloud, Second Edition,” Addison-Wesley, 2020 - [Hruska 20] Joel Hruska, “Intel Demos PCIe 5.0

Performance 52

Performance Latency Storage Hardware 52

Brendan Gregg

DECEMBER 31, 2017

My last talk for 2017 was at AWS re:Invent, on "How Netflix Tunes EC2 Instances for Performance," an updated version of my [2014] talk. A video of the talk is on youtube : The slides are on slideshare : I love this talk as I get to share more about what the Performance and Operating Systems team at Netflix does, rather than just my work.

Tuning 61

Tuning AWS Best Practices Network 61

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. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

Brendan Gregg

DECEMBER 30, 2017

My last talk for 2017 was at AWS re:Invent, on "How Netflix Tunes EC2 Instances for Performance," an updated version of my [2014] talk. A video of the talk is on youtube : The slides are on slideshare : I love this talk as I get to share more about what the Performance and Operating Systems team at Netflix does, rather than just my work.

Tuning 52

Tuning AWS Best Practices Network 52

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 avg-cpu: %user %nice %system %iowait %steal %idle 14.81 avg-cpu: %user %nice %system %iowait %steal %idle 14.86 avg-cpu: %user %nice %system %iowait %steal %idle 14.95 avg-cpu: %user %nice %system %iowait %steal %idle 14.54

Cache 105

Cache C++ AWS Latency 105

All Things Distributed

MAY 19, 2017

We decided to use our inventive powers to design and build a new database engine that would give database systems such as MySQL and PostgreSQL reliability and performance at scale, at a level that could serve even the most demanding OLTP applications.

Database 120

Database Design Cloud Storage 120

Dynatrace

MAY 7, 2019

So, he started selling open source Linux and Unix operating systems with his famous sales pitch “You wouldn’t buy a car with the hood welded shut”. The name he chose for his product was – unsurprisingly – “Red Hat Linux”, and soon became famous as a stable and easy-to-use operating system.

Open Source 113

Open Source DevOps Innovation Operating System 113

The Morning Paper

JANUARY 21, 2020

In the next post we’ll look at the detailed analysis of how a team at Etsy handled a particular incident on December 4th 2014, to see what we can learn from it. The Internet itself, over which these systems operate, is a dynamically distributed network spanning national borders and policies with no central coordinating agent.

Internet 98

Internet Internet Strategy Energy 98

SQL Performance

FEBRUARY 22, 2021

The system table sys.sysprocesses was replaced way back in SQL Server 2005 by a set of dynamic management views (DMVs), most notably sys.dm_exec_requests , sys.dm_exec_sessions , and sys.dm_exec_connections. We recommend that you use the current SQL Server system views instead. sysprocesses. Why this is a problem.

Latency 57

Latency Servers Monitoring Systems 57

ACM Sigarch

APRIL 26, 2018

The new DGX-2, which achieves 2 petaFLOPS in the system, combines 16 fully interconnected GPUS with 10x the deep learning performance. In 2014, Google’s Project Tango deployed Myriad1 to construct 3D indoor maps. The new GV100 packs 7.4 TFLOPS FP-64, 14.8 TFLOPS FP-32 and 118.5 HPU1 with TSMC 28nm process was announced in HOTCHIPS’17.

Hardware 99

Hardware Artificial Intelligence Architecture Google 99

The Morning Paper

JULY 21, 2019

A big milestone will slip quietly by during this recess – it was five years ago on the 30th July 2014 that I read and shared the very first paper in this current streak of paper reading. The role of the operating system in a kernel-bypass era. For example: Unikernels: the next stage of Linux’s dominance. Regards, Adrian.

Programming 42

Programming Operating System Design Systems 42

Tasktop

JULY 22, 2020

It was just after I had given my talk at the initial Gene Kim DevOps Enterprise Summit in San Francisco in 2014. The memory of meeting Tasktop CEO, Dr. Mik Kersten, is eternally sketched into my mind. So while it’s been an amazing journey for Tasktop and the VSM space so far, in many ways it’s just the beginning.

Transportation 52

Transportation DevOps Software Software 52

Smashing Magazine

JULY 29, 2021

As for absolute units, we will dive in and see how they are affected by other things, such as the screen and the device’s operating system. The 2014 MacBooks got the first “retina” screens (retina being synonymous with high density). On design systems, CSS/JS and UX. The most common absolute unit is the pixel ( px ).

Operating System 145

Operating System Mobile Testing Systems 145

Brendan Gregg

JULY 2, 2021

This is also applicable for people adding it to their own in-house monitoring systems. You likely already have agents running on all your customer systems. There are so many options it's really your own preference based on your existing system and customer environments. cachestat File system cache statistics line charts 7.

Open Source 40

Open Source Latency Cache Energy 40

Brendan Gregg

MARCH 16, 2024

The problem is that this system has a default libc that has been compiled without frame pointers, so any stack walking stops at the libc layer, producing a partial stack that's missing the application frames. This is pretty common and usually goes unnoticed as the flame graph looks ok at first glance. This can be done using eBPF as well.

Java 145

Java Cache Google Hardware 145

VoltDB

JANUARY 12, 2018

Our co-founder, 2014 Turing Award winner, Mike Stonebraker , has a saying: “ Eventual consistency means ‘creates garbage.’” ” One of the suggested benefits of eventual consistency systems is that they support high availability across multiple data centers.But the biggest downside ? No More Eventual Consistency.

Database 40

Database Blockchain Healthcare IoT 40

VoltDB

JANUARY 12, 2018

Our co-founder, 2014 Turing Award winner, Mike Stonebraker , has a saying: “ Eventual consistency means ‘creates garbage.’” ” One of the suggested benefits of eventual consistency systems is that they support high availability across multiple data centers.But the biggest downside ? No More Eventual Consistency.

Database 40

Database Blockchain Healthcare IoT 40

SQL Server According to Bob

JUNE 3, 2016

Use SQL Server Management Studio (SSMS) or your favorite query editor to connect to a SQL Server 2012 or 2014 instance. Note: You may need to execute the dbcc a second time so buffer cache is hot, eliminating I/O sub-system variants. SQL Server 2014. Paste the script below in a new query window. or newer release. SQL Server.

Hardware 40

Hardware Software Engineering Servers Cache 40

Nick Desaulniers

JUNE 2, 2018

Turns out someone asked this exact question on the ccache mailing list back in 2014 , and a teammate from my Android days supposed a timestamp was the culprit. make -j4 2008.93s user 231.69s system 346% cpu 10:47.07 KBUILD_BUILD_TIMESTAMP = '' make CC = "ccache gcc" -j4 2426.79s user 312.08s system 372% cpu 12:15.22

Speed 46

Speed Cache C++ Systems 46

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 avg-cpu: %user %nice %system %iowait %steal %idle 14.81 avg-cpu: %user %nice %system %iowait %steal %idle 14.86 avg-cpu: %user %nice %system %iowait %steal %idle 14.95 avg-cpu: %user %nice %system %iowait %steal %idle 14.54

Cache 40

Cache C++ AWS Java 40