Nick Desaulniers

OCTOBER 24, 2018

Typically, when we modify a program, we’d like to run it to verify our changes. Before booting a compiled Linux kernel image on actual hardware, it can save us time and potential headache to do a quick boot in a virtual machine like QEMU. 1.144949 ] Hardware name: QEMU Standard PC ( i440FX + PIIX, 1996 ) , BIOS 1.10.2-1ubuntu1

C++ 56

C++ Hardware Virtualization Systems 56

ACM Sigarch

FEBRUARY 23, 2018

It is much more difficult to publish truly risky, revolutionary research due to implicit filters in what gets funded and what makes it past a program committee. According to the article “ When Women Stopped Coding “, the percent of women in Computer Science 30 years ago was nearly twice what it is now. Discounting the Past.

Architecture 47

Architecture Cache Hardware Virtualization 47

Nick Desaulniers

MAY 30, 2016

Simultaneously, they’re all right, but they’re also all wrong (and need a lesson about portable C code). One of the first few programs a programmer might write after hello world is something like this: 1. When I run that code on my x86-64 OSX machine, I get the following output: 1. When they run that program, they see: 1.

C++ 59

C++ Programming Code Hardware 59

Smashing Magazine

SEPTEMBER 21, 2021

More precisely, we’ll discuss: Why using the Linux shell can be very powerful when working with plain text (including code); Why using the dreaded Arch Linux; The advantage of a tiling window manager; How to have a great terminal experience with URxvt, tmux, and tmuxp; Why Vim can become your best friend. But first, a bit of theory.

Development 99

Development Energy Programming Efficiency 99

Dynatrace

JANUARY 26, 2021

Traditional computing models rely on virtual or physical machines, where each instance includes a complete operating system, CPU cycles, and memory. VMware commercialized the idea of virtual machines, and cloud providers embraced the same concept with services like Amazon EC2, Google Compute, and Azure virtual machines.

Serverless 244

Serverless Efficiency Lambda Azure 244

HammerDB

FEBRUARY 25, 2021

This is why the choice of programming language is so important from the outset. To benchmark a database we introduce the concept of a Virtual User. Database Application Logic Oracle PL/SQL SQL Server T-SQL Db2 SQL PL PostgreSQL PL/pgSQL MySQL stored program language HammerDB Stored Procedures. Basic Benchmarking Concepts.

Programming 67

Programming Benchmarking Virtualization C++ 67

Brendan Gregg

MARCH 16, 2024

Apart from library code, maybe your application doesn't have frame pointers either, in which case everything is broken. Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway.

Java 145

Java Cache Google Hardware 145

O'Reilly

NOVEMBER 28, 2023

And everyone has opinions about how these language models and art generation programs are going to change the nature of work, usher in the singularity, or perhaps even doom the human race. AI users say that AI programming (66%) and data analysis (59%) are the most needed skills. Many AI adopters are still in the early stages.

Open Source 108

Open Source Artificial Intelligence Google Infrastructure 108

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI.

Speed 126

Speed Java AWS Virtualization 126

SQL Server According to Bob

JULY 13, 2016

desktop machine (I won’t tell you the hardware details. Launching this program brings you to the new Basic Installer Screen. Behind the scenes we are running our actual setup code (which uses Windows Installer) but using a configuration file with predefined settings and putting a simple UI over the execution. Go install it”.

Servers 40

Servers Media Engineering Virtualization 40

HammerDB

JUNE 27, 2022

It enables the user to measure database performance and make comparative judgements about database hardware and software. These factors meant that often when looking for database performance information, the results for a particular combination of software and hardware were not available. What is HammerDB? Why HammerDB was developed.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

SQL Server According to Bob

DECEMBER 18, 2018

Before all was said and done, all of these people and more helped with various activities: · Eugene, Mike, Slava, Scott, Peter, Steve and others doing code reviews on my SQL Server and Host Extension changes. · Red Hat, SUSE, HPE, Intel helping and confirming Linux behaviors and making file system code changes. product: Virtual Disk.

Servers 90

Servers Media Cache Storage 90

The Morning Paper

DECEMBER 8, 2019

On the last morning of the conference Daniel Bittman presented some of the work being done in the context of the Twizzler OS project to explore new programming models for NVM. The starting point is a set of three asumptions for an NVM-based programming model: Compared to traditional persistent media, NVM is fast.

Hardware 56

Hardware Programming Media Storage 56

Nick Desaulniers

APRIL 6, 2020

“War stories” in programming are entertaining tales of truly evil bugs that kept you up at night. halt (); Some sort of very early exception handler; better to sit busy in an infinite loop than run off and destroy hardware or corrupt data, I suppose. That doesn’t happen in kernel code; the CPU does that on its own.

C++ 67

C++ Hardware Code Virtualization 67

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI.

Speed 52

Speed Java AWS Virtualization 52

Alex Russell

APRIL 29, 2021

After 20 years of neck-in-neck competition, often starting from common code lineages, there just isn't that much left to wring out of the system. Now in development in WebKit after years of radio silence, WebXR APIs provide Augmented Reality and Virtual Reality input and scene information to web applications. PWA App Icon Badging.

Media 145

Media Games Education Engineering 145

Dotcom-Montior

NOVEMBER 24, 2021

With the rapid advancements in web application technologies, programming languages, cloud computing services, microservices, hybrid environments, etc., This complexity is “hidden” to the end user, like how an API (Application Programming Interface) operates, whether that is an actual user or another computer. Concurrency.

Systems 74

Systems Monitoring Hardware Network 74

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI.

Speed 40

Speed Java AWS Virtualization 40

Randon ASCII

AUGUST 16, 2018

When a Windows program stops pumping messages there will be ETW events emitted to indicate exactly where this happened , so those types of hangs are trivial to find. Normally running every 6 ms is enough to make a program responsive, but for some reason it wasn’t making any progress. MiB, 32112, 98 code blocks. During the 2.81

Programming 75

Programming Virtualization Code Processing 75

The Morning Paper

APRIL 2, 2019

Root of trust (RoT) establishment on an untrusted system ensures that a system state comprises all and only content chosen by the user, and the user’s code begins execution in that state. In this context it means there are no external dependencies on e.g. secrets, trusted hardware modules, or special instructions (e.g.

Software 40

Software Software Programming Hardware 40

Randon ASCII

APRIL 14, 2020

I tried to tap the control key (virtual key code 162) once a second until the password input field appeared. Some of it is programs (including som internal Google tools) that have registered in Task Scheduler to run “On workstation lock of any user” – who knew? Ultimately there are a lot of programs spinning very hard.

Programming 89

Programming Processing Systems Hardware 89

Particular Software

MARCH 11, 2019

Exceptions What happens when programming exceptions occur in message processing code? Even with the most robust code possible, exceptions can still happen. Unfortunately it makes ordered delivery virtually impossible to support. For simplicity of the code we'll use two flags.

Virtualization 69

Virtualization Scalability Servers Processing 69

SQL Server According to Bob

JANUARY 11, 2020

Example 1: ​​ Hardware failure (CPU board) Battery backup on the caching controller maintained the data. Important Always consult with your hardware manufacturer for proper stable media strategies. Mirroring can be implemented at a software or hardware level.

Servers 40

Servers Cache Media Hardware 40

Brendan Gregg

AUGUST 8, 2017

Nowadays, the source code to old operating systems can also be found online. Linux is also hard coding the 1, 5, and 15 minute constants. This state is used by code paths that want to avoid interruptions by signals, which includes tasks blocked on disk I/O and some locks. This, too, was a dead end. . ;-).

Latency 111

Latency Metrics C++ Systems 111

SQL Server According to Bob

JANUARY 11, 2020

​​ The following ​​ code ​​ example ​​ shows ​​ the setting ​​ of ​​ values ​​ in ​​ illegal ​​ array positions. scid=kb ; en-us;828339 ) on the Microsoft Web site.

Servers 40

Servers Cache Database Media 40