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. A quick check of basic performance statistics showed over 30% higher CPU consumption. How would you time time?

Speed 52

Speed Java AWS Virtualization 52

Dynatrace

APRIL 19, 2021

I am delighted to share, Dynatrace has been named a Leader for the 11 th consecutive time in the 2021 Gartner Magic Quadrant for Application Performance Monitoring (APM) report. Dynatrace enables our customers to tame cloud complexity, speed innovation, and deliver better business outcomes through BizDevSecOps collaboration.

DevOps 162

DevOps Innovation Speed Infrastructure 162

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. A quick check of basic performance statistics showed over 30% higher CPU consumption. How long does it take to read the time?

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

JULY 4, 2021

It's an exciting time for developments in computer performance, not just for the BPF technology (which I often [write about]) but also for processors with 3D stacking and cloud vendor CPUs (e.g., This was a chance to talk about other things I've been working on, such as the present and future of hardware performance.

Performance 52

Performance Latency Hardware Storage 52

Brendan Gregg

FEBRUARY 28, 2023

At USENIX SREcon22 APAC I gave the opening keynote on the future of computer performance, rounding up the latest developments and making predictions of where I see things heading. This talk originated from my updates to Systems Performance 2nd Edition , and this was the first time I've given this talk in person!

Performance 52

Performance Latency Cache Virtualization 52

Alex Russell

MARCH 6, 2021

Back in 2016, I gave a talk outlining the causes and effects of the terrible performance of web apps built using popular tools on the fastest-growing device segment: low-end to mid-range Android phones. Poor performance has a compound effect on user expectations at an ecosystem level. Live by the link, die by the link.

Performance 124

Performance Network Cache Metrics 124

Nick Desaulniers

JUNE 2, 2018

ccache , the compiler cache, is a fantastic way to speed up build times for C and C++ code that I previously recommended. Recently, I was playing around with trying to get it to speed up my Linux kernel builds, but wasn’t seeing any benefit. YMMV based on CPU and disk performance. cat /proc/version Linux version 4.15.0-13-generic

Speed 46

Speed Cache C++ Systems 46

Brendan Gregg

JULY 15, 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 111

Systems Performance Education Technology 111

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. Keeping business stakeholders in the loop with end-to-end observability with deep insight and continuous feedback loops?. #2 2 Confidence: .

Software 246

Software Software Open Source Azure 246

The Netflix TechBlog

APRIL 17, 2019

Netflix headquarters circa 2014. Scalable Video Technology (SVT) is Intel’s open source framework that provides high-performance software video encoding libraries for developers of visual cloud technologies. The encoder can typically be improved years after the standard has been frozen including varying speed and quality trade-offs.

Open Source 166

Open Source Scalability Speed Efficiency 166

Rigor

SEPTEMBER 11, 2019

Reading time 16 min Whether you’re a web performance expert, an evangelist for the culture of performance, a web engineer incorporating performance into your process, or someone new to the web performance entirely, you probably identify as curious, excited about new ideas, and always learning. Rachel Andrew.

Performance 89

Performance Education Google Website 89

MachMetrics

JUNE 16, 2020

Many were hesitant to sacrifice site speed for the added layer of security if they felt like they didn’t need it. Secondly, SSL/HTTPS unlocks additional web performance benefits that more than make up for the added latency. How HTTPS Improves Performance. So what’s the truth? Is SSL slow? Source: Google Blog.

Speed 86

Speed Latency Google Website 86

Speed Curve

JUNE 14, 2021

I’m delighted to be joining some of my favourite web performance people at SpeedCurve! I’ve been a full-time web performance consultant for around nine years. I’ve written a couple of books , spoken at conferences , and become an organiser of London’s Web Performance Meetup.

Retail 52

Retail Internet Internet Education 52

Dynatrace

NOVEMBER 22, 2021

When Amazon launched AWS Lambda in 2014, it ushered in a new era of serverless computing. Deterministic AI, or causal AI, automatically reveals precise links between cause and effect in real time—and takes action on these root causes before they result in performance or user experience problems downstream. Dynatrace news.

AWS 233

AWS Lambda Artificial Intelligence Serverless 233

Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 111

Virtualization AWS Hardware Storage 111

CSS - Tricks

NOVEMBER 26, 2021

I’ve got some blind spots in CSS-related performance things. into processing/rendering/painting on the GPU rather than CPU , which is a speed boost. scrolling performance improvement is a massive deal! One example is the will-change property. It’s a good name. el.additional-hard-to-know-state { opacity: 0; }.

Speed 60

Speed Performance Testing Design 60

SQL Performance

APRIL 8, 2019

This processor has a base clock speed of 2.0GHz, with an all-core boost speed of 2.55GHz, and a max boost clock speed of 3.0GHz. The AMD EPYC 7551 processor has slightly lower single-threaded CPU performance when compared to the older 2.3 The L3 cache size is 64MB. lanes for I/O connectivity. lanes per processor.

Azure 42

Azure Virtualization Storage Benchmarking 42

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

SQL Server According to Bob

SEPTEMBER 26, 2016

Performance issues surrounding Availability Groups typically were related to disk I/O or network speeds. As we moved towards SQL Server 2014, the pace of hardware accelerated. We needed to start thinking about how fast can we replicate to a synchronous secondary replica in terms of % of the speed of a standalone workload.

Availability 40

Availability Servers Hardware Benchmarking 40

SQL Performance

MARCH 17, 2020

Back in 2014, I wrote an article called Performance Tuning the Whole Query Plan. This machine has four i7 CPUs (hyperthreaded to 8) with a base speed of 2.4GHz. Performance is competitive at around 15ms. This code is provided for interest and is not included in the performance summary table. Test Environment.

Servers 86

Servers Tuning Database Efficiency 86

Enprowess

JANUARY 11, 2022

These front end frameworks provide various templates to interact with browser components and are compatible with various libraries which boost the performance while reducing the amount of code required. Thus, the entire website development methodology benefits from the boosted speed and saves times by using these top front end frameworks.

Virtualization 64

Virtualization Website Speed Mobile 64

SQL Performance

JULY 16, 2019

For many years, I explicitly advised people not to run their SQL Server workloads on AMD hardware because of the much lower single-threaded CPU performance and consequently higher SQL Server core license costs. This has led to a very noticeable reduction in generational performance increases since Broadwell-EP, as shown in Figure 1.

Servers 46

Servers Hardware Architecture Retail 46

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 40

Virtualization AWS Hardware Storage 40

KeyCDN

JUNE 20, 2019

The lower conversion rate on mobile could be due to a variety of reasons including the website not being responsive for mobile devices, the speed isn’t up to par, etc. Having high-quality images on your site can however slow down the performance of your site overall as the image size grows.

Ecommerce 41

Ecommerce Speed Website Mobile 41

Alex Russell

JUNE 22, 2022

Past swings away from OS default browsers have hinged on the superior features , better performance , improved security , and adequate site compatibility that come from switching. Without the ability to differentiate on features, security, performance, and privacy, what's to sell? What are those mechanisms? A slightly different UI ?

Engineering 110

Engineering Traffic Government Google 110

SQL Performance

JUNE 21, 2019

What I find is very similar to backups: No DBCC CHECKDBs performed at all DBCC CHECKDBs being performed only on select databases DBCC CHECKDBs last performed months or years ago. For SQL Server 2008R – 2014, you could lower this threshold using trace flag 2371. Worst case is a job scheduled reporting failed DBCC CHECKDBs.

Servers 49

Servers Azure Hardware Database 49

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. With only an hour or so of degraded performance in the end, it’s not the worst incident you can imagine, but it was clearly taken as very serious given the time of year. The last word.

Internet 53

Internet Internet Cache Engineering 53

Enprowess

SEPTEMBER 28, 2021

Performance. Finding the simplest react alternatives isn’t as straightforward as many assume because it’s exhausting to search out an ideal match whilst considering the stability and ecosystem support together with API performance delivered by ReactJS. Yet, they ultimately pick up the speed. Ecosystem support. Preact pros.

Open Source 52

Open Source Mobile Entertainment Virtualization 52

Smashing Magazine

DECEMBER 2, 2021

Good ol’ PerfPlanet is back for another season with all things speed and web performance. Anyone is welcome to contribute to the calendar , so do feel free to reach out with a topic or tool you’re passionate about, or a technique you’d like to teach and tell the web performance community about. Stoyan Stefanov on Twitter.

Design 108

Design Development Programming Website 108

Speed Curve

NOVEMBER 22, 2015

Not all scripts and stylesheets necessarily have a big impact on performance, so it's important to be able to tell the blocking requests when trying to improve the user experience. The "scrubber" at the bottom of the waterfall (showing the screenshot at that point in time) confirms that rendering has been blocked up to this point.

Metrics 61

Metrics Innovation Performance 61

Enprowess

SEPTEMBER 20, 2021

However, choice mainly depends on numerous factors like project timeline, framework performance, learning curve, and team size. Performance. Created by Evan You, Vue had its first public appearance in 2014. Vue vs React: Performance. Two primary metrics verify the speed of an app: start-up time and runtime performance.

Open Source 52

Open Source Mobile Scalability Google 52

Smashing Magazine

OCTOBER 27, 2021

It also ranges from studying individual recordings to gather data about the behavior of specific users to quantitatively comparing the number of users who looked at an AOI, the amount of time that they spent on it, and the speed with which it is first detected. Since 2014 , however, mobile users have been gaining more and more importance.

Mobile 112

Mobile Website Hardware Social Media 112

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 ). I am yet to find a traditional CMS vendor who can deliver this level of performance on the scale (millions of page views per day).

Systems 63

Systems Cache Website Network 63

SQL Performance

MARCH 8, 2021

SQL Server 2014 SP2 and later produce runtime (“actual”) execution plans that can include elapsed time and CPU usage for each execution plan operator (see KB3170113 and this blog post by Pedro Lopes). This can make it difficult to draw sound performance-tuning conclusions. The clock keeps running at the same rate even during sleep.

Servers 95

Servers Tuning Architecture Processing 95

Speed Curve

JUNE 10, 2015

The techniques required to reach such a broad audience were covered by Tim Kadlec at Velocity 2015 in Santa Clara, who took us through the process of creating a high-performant responsive site that can effectively reach a diverse global audience. Here’s Kadlec’s related talk from Velocity 2014 in New York: The path to performance.

Metrics 40

Metrics Design DevOps Website 40

Brendan Gregg

SEPTEMBER 5, 2017

I gave a talk about container performance recently at DockerCon, and included a quick summary of how they work: YouTube , SlideShare : If you search of slideshare and youtube, you'll find many other good talks on containers as well. People rarely create them manually.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

AUGUST 8, 2017

If they are higher than your CPU count, then you might have a performance problem (it depends). And here's an excerpt from [Linux] today (include/linux/sched/loadavg.h): #define EXP_1 1884 /* 1/exp(5sec/1min) as fixed-point */ #define EXP_5 2014 /* 1/exp(5sec/5min) */ #define EXP_15 2037 /* 1/exp(5sec/15min) */. Yes, I'd say so.

Latency 111

Latency Metrics C++ Systems 111