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. It's an exciting development in cloud computing: hardware virtualization is now fast. Virtualized in Hardware**: Hardware support for virtualization, and near bare-metal speeds.

Virtualization 40

Virtualization AWS Hardware Storage 40

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. CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. How long does it take to read the time?

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

JULY 4, 2021

## References I've reproduced the talk references below, so you can click on links: - [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] Jul 2008 - [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] 2010 - [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency? Ford, et al., “TCP

Performance 52

Performance Latency Hardware Storage 52

Enprowess

JANUARY 11, 2022

Thus, the entire website development methodology benefits from the boosted speed and saves times by using these top front end frameworks. PWAs can save the time and efforts required to develop an entire native application for multiple platforms from scratch, hence speeding up the time to market and enhancing audience reach.

Virtualization 64

Virtualization Website Speed Mobile 64

Brendan Gregg

FEBRUARY 28, 2023

References I've reproduced the references from my SREcon22 keynote below, so you can click on links: [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] , Jul 2008 [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] , 2010 [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency?

Performance 52

Performance Latency Cache Virtualization 52

Smashing Magazine

OCTOBER 27, 2021

Another area that has been showing huge potential is eye-tracking in the context of virtual reality. Since 2014 , however, mobile users have been gaining more and more importance. Source: Oculid) ( Large preview ). Eye-tracking heatmaps are a visual representation of aggregate eye movements from the users.

Mobile 115

Mobile Website Hardware Social Media 115

Brendan Gregg

SEPTEMBER 5, 2017

I've suggested adding a command to docker to make listing at least the top-level PIDs in containers easier. ## Virtual Machines The two main technologies on Linux are Xen and KVM (and there's Bhyve for BSD). What happens if processes really do try to populate all that virtual memory?

Virtualization 75

Virtualization AWS Engineering Hardware 75

SQL Performance

JUNE 21, 2019

For SQL Server 2008R – 2014, you could lower this threshold using trace flag 2371. While hardware such as intelligent SANs, Solid State Disk, and other advancements have helped speed things up, wasted space in index can translate to wasted space in the buffer pool as well as wasting more I/O. That can take a long time on larger tables.

Servers 49

Servers Azure Hardware Database 49

Brendan Gregg

AUGUST 8, 2017

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) */. Anyway, the following patch seems to make the load average much more consistent WRT the subjective speed of the system.

Latency 111

Latency Metrics C++ Systems 111

Enprowess

SEPTEMBER 28, 2021

The presence of virtual DOM and SPA are the key influencing USPS of React JS. Inferno JS would be your best option, if you would like to build client and server-side interfaces with faster speeds, better performance, and isomorphic rendering. . Yet, they ultimately pick up the speed. Inferno Pros. Ember JS Cons. Source: [link].

Open Source 52

Open Source Mobile Entertainment Development 52

Brendan Gregg

JULY 14, 2019

It originated as Berkeley Packet Filter (BPF), an in-kernel execution engine that processes a virtual instruction set, and has been extended (aka eBPF) for providing a safe way to extend kernel functionality. 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

Enprowess

SEPTEMBER 20, 2021

Created by Evan You, Vue had its first public appearance in 2014. Like React, Vue features two-way binding, uses components and a virtual DOM. Two primary metrics verify the speed of an app: start-up time and runtime performance. It expands on many concepts found in React and Angular. Depending on your requirements, Vue.js

Open Source 52

Open Source Mobile Scalability Google 52

Randon ASCII

AUGUST 23, 2018

On any modern operating system each process gets their own virtual memory address space so that the operating system can isolate processes and protect memory. GetProcessVaData in 2014 or earlier , but they didn’t leave enough information to be useful. Speed up the scanning of CFG regions – okay, this one is done.

Operating System 58

Operating System Code Processing Systems 58

SQL Server According to Bob

DECEMBER 31, 2018

Several years ago, I created a XEProfiler based loosely on the SSMS implementation, built as a 64-bit application to avoid the 32-bit memory limitations and using parallel activities to speed up the processing. virtual public void AbortAllWorkers() { if (null != The XEProfiler Sample. Creates an empty DataGrid control. Start(); }.

Efficiency 40

Efficiency Code Servers Cache 40