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

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

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

SQL Performance

JUNE 21, 2019

I've been teaching and writing about common SQL Server mistakes for many years. This article will expand on my previous article and point out how these apply to SQL Server , Azure SQL Database , and Azure SQL Managed Instance. SQL Server Agent alerts. This situation applies to on-premises SQL Server and IaaS. Statistics.

Servers 49

Servers Azure Hardware Database 49

Brendan Gregg

JULY 4, 2021

I summarized these topics and more as a plenary conference talk, including my own predictions (as a senior performance engineer) for the future of computing performance, with a focus on back-end servers. 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

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. . You will get add-ons like server-side rendering, routing and more.

Open Source 52

Open Source Mobile Entertainment Virtualization 52

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. Server-Side Rendering. to render pages on the server. What is React? Flux and Redux).

Open Source 52

Open Source Mobile Scalability Google 52

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). Oracle VM Server is based on Xen. Outside of EC2, many other providers are deploying on KVM.

Virtualization 76

Virtualization AWS Engineering Hardware 76

SQL Server According to Bob

DECEMBER 31, 2018

How It Works: XEvent Output and Visualization SQL Server Management Studio Provides–“XE Profiler” Use the SSMS XEvent Profiler. Using SQL Server Management Studio (SSMS) and storing the events in a table requires reading the events, streaming to table storage followed by an order by event sequence query. The XEProfiler Sample.

Efficiency 40

Efficiency Code Servers Cache 40

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