Brendan Gregg

JANUARY 1, 2019

eBPF should stand for something meaningful, like Virtual Kernel Instruction Set (VKIS), but due to its origins it is extended Berkeley Packet Filter. So instead of a static HTML website, JavaScript lets you define mini programs that run on events like mouse clicks, which are run in a safe virtual machine in the browser.

C++ 111

C++ Virtualization Programming Code 111

Adrian Cockcroft

FEBRUARY 9, 2023

The virtualization and networking platform could be datacenter based, with something like VMware, or cloud based using one of the cloud providers such as AWS EC2. Both mobile and web front ends call an Application Program Interface (API) that is managed by an API proxy.

Engineering 137

Engineering Serverless Lambda AWS 137

O'Reilly

SEPTEMBER 15, 2021

64% of the respondents took part in training or obtained certifications in the past year, and 31% reported spending over 100 hours in training programs, ranging from formal graduate degrees to reading blog posts. As Figure 3 shows, the percentage of men and women respondents who saw no change was virtually identical (18%).

Azure 145

Azure Social Media Programming AWS 145

HammerDB

APRIL 27, 2021

In the example below we have modified the SQL Server, number of warehouses to build and the virtual users to build them. We have set the connection value of mssqls_server and then the tpcc value of the warehouse count and the number of virtual users to build them. GUI Virtual User Options. CLI Virtual User Options.

Virtualization 73

Virtualization Benchmarking Database Operating System 73

Brendan Gregg

OCTOBER 8, 2018

more capable, and built from the ground up for the modern era of the eBPF virtual machine. C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |.

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

DECEMBER 31, 2018

eBPF should stand for something meaningful, like Virtual Kernel Instruction Set (VKIS), but due to its origins it is extended Berkeley Packet Filter. So instead of a static HTML website, JavaScript lets you define mini programs that run on events like mouse clicks, which are run in a safe virtual machine in the browser.

C++ 52

C++ Virtualization Programming Code 52

Brendan Gregg

AUGUST 18, 2019

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. The probe is BEGIN , a special probe that runs at the beginning of the program (like awk).

Latency 68

Latency C++ Cache Programming 68

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. It will seem that there’s no output, and QEMU isn’t responding to ctrl+c. enable-kvm.

C++ 56

C++ Hardware Virtualization Systems 56

Alex Podelko

OCTOBER 28, 2016

For example, it was possible to use Mercury/HP WinRunner or QuickTest Professional (QTP) scripts in load tests, but a separate machine was needed for each virtual user (or at least a separate terminal session). Programming. Programming API using a Load Testing Tool. Tools, using standard languages such as C (e.g.

Performance Testing 100

Performance Testing Technology Technology Testing 100

Nick Desaulniers

MAY 30, 2016

Three C/C++ programmers walk into a bar. 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 they run that program, they see: 1. What the hell is going on?

C++ 59

C++ Programming Code Hardware 59

Adrian Cockcroft

JUNE 21, 2022

I was mostly coding in C, tuning FORTRAN, and when I needed to do a lot of data analysis of benchmark results used the S-PLUS statistics language, that is the predecessor to R. I was looking for a new challenge, so joined the program and ended up getting certified as a “black belt”. He had it up and running on Wednesday.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Nick Desaulniers

APRIL 18, 2014

At the lowest level, all computers are programmed with strings of ones and zeroes. When you program in machine language, you are controlling the computer at its brainstem, the root of its existence. So a whole Babel of computer languages has been created for programmers: FORTRAN, BASIC, COBOL, LISP, Pascal, C, PROLOG, FORTH.

C++ 98

C++ Programming Code Virtualization 98

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. For HammerDB both TPROC-C and TPROC-H run all of their workloads on the database being tested in SQL. The following is an example from TPROC-C from SQL Server. select top 100.

Programming 67

Programming Benchmarking Virtualization C++ 67

Brendan Gregg

OCTOBER 7, 2018

more capable, and built from the ground up for the modern era of the eBPF virtual machine. C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |.

C++ 40

C++ Virtualization Programming Latency 40

Nick Desaulniers

MAY 25, 2015

Interpreters and compilers are interesting programs, themselves used to run or translate other programs, respectively. Those other programs that might be interpreted might be languages like JavaScript, Ruby, Python, PHP, and Perl. The other programs that might be compiled are C, C++, and to some extent Java and C#.

C++ 73

C++ Programming Code Architecture 73

Smashing Magazine

JUNE 30, 2021

While Workers are the “thread” primitive of the web, they are very different from the threads you might be used to from C++, Java & co. The Actor Model’s most popular incarnation is probably in the programming language Erlang. Concurrency Model #1: Actors. Nothing is slow (or fast) until you measure.

Games 145

Games Architecture Code C++ 145

Sutter's Mill

MAY 1, 2023

Simple, mathematically safe, and efficient chained comparisons ( commit ) P0515 “Consistent comparison” (aka “spaceship”) was the first feature derived from this Cpp2 work to be adopted into the ISO Standard for C++, in C++20. Thank you again to everyone who helped land this Cpp2 feature in the ISO C++ Standard.

C++ 97

C++ Virtualization Lambda Code 97

HammerDB

JUNE 27, 2022

An important concept was to simulate database users called Virtual Users in parallel (rather than concurrently) to accurately simulate a real database workload with multiple users running from separate systems. What programming languages does HammerDB use and why does it matter? Adoption by the TPC. The NOPM Metric.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Sutter's Mill

MARCH 14, 2013

The point was not that the "new features" (loop constructs) could do every goto trick better/simpler, but that some of those tricks should be avoided to simplify good programming. Concepts and concepts lite are meant to make good generic programming simpler.

Programming 40

Programming Virtualization C++ Development 40

O'Reilly

FEBRUARY 18, 2020

It’s the single most popular programming language on O’Reilly, and it accounts for 10% of all usage. In programming, Python is preeminent. Normalized search frequency of top programming languages on the O’Reilly online learning platform in 2019 (left) and the rate of change for each language (right). Figure 3 (above).

Software Architecture 134

Software Architecture DevOps Data Engineering Architecture 134

Dynatrace

APRIL 5, 2021

Azure is a large and growing cloud computing ecosystem that empowers its users to access databases, launch virtual servers, create websites or mobile applications, run a Kubernetes cluster, and train machine learning models, to name a few examples. Consider using virtual machines or specialized frameworks for these types of tasks.

Azure 138

Azure Serverless IoT Lambda 138

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? Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems.

Speed 126

Speed Java AWS Virtualization 126

The Agile Manager

FEBRUARY 29, 2016

A few short years ago we were content to have an automated build execute every few minutes; today we want every check-in to trigger a build that is promoted through progressively more complex tests in virtual environments managed, instantiated and torn down by scripts.

Government 40

Government Games C++ Virtualization 40

Tech News Gather

NOVEMBER 22, 2022

The application world began to move forward after Google announced Kotlin as the new programming language for Android Apps at the 2017 I/O conference. Because Google intends to change the platform to Kotlin, many programmers have chosen Kotlin for Android app development and programming. It runs on the Java Virtual Machine.

Development 52

Development Java Programming Google 52

HammerDB

NOVEMBER 30, 2018

Programming Languages. When you download the source code for HammerDB you can see that the programming language it is written in is called TCL. TCL was designed as a language to be closely tied with C/C++ and at this lower level there is the compiled TCL (tclsh) or TCL/TK (wish) interpreter and supporting libraries.

Architecture 40

Architecture Virtualization Open Source C++ 40

HammerDB

JULY 5, 2022

Python is a popular programming language, especially for beginners, and consequently we see it occurring in places where it just shouldn’t be used, such as database benchmarking. What programming languages does HammerDB use and why does it matter? Surely any language will do? usr/local/bin/tclsh8.6

Benchmarking 98

Benchmarking Database C++ Virtualization 98

High Scalability

JULY 26, 2018

Peter : DARPA foresee a third one in which context-based programs are able to explain and justify their own reasoning. That means every employee, contractor, and the thousands of agents who work at the company show up to work—team meetings, training seminars, onboarding sessions—all inside a virtual reality campus.

Internet 124

Internet Internet Scalability Serverless 124

Tech News Gather

DECEMBER 27, 2022

It’s suitable with java virtual machine and JavaScript that offers a range of support java communication, speed, code and quality. Objective-C. In addition to dynamic typing and binding, Objective-C also has language-level support for object graph management and is regarded as a super set of the C programming language.

Education 52

Education Social Media Development Media 52

Enprowess

MAY 24, 2022

More incredible Speed with Virtual DOM. Reactjs can help your business in web and mobile application development by bringing fast speed using the virtual DOM. Virtual DOM of React refreshes only parts of the page, so it is faster than the conventional full refresh model. Virtual DOM is an additional feature offered by React.

Mobile 52

Mobile Open Source Virtualization Speed 52

O'Reilly

NOVEMBER 21, 2019

It enlists software “robots” to automate the rote, repetitive, or tedious tasks that bridge virtual gaps, or facilitate virtual transfers or exchanges, in and between common business processes. They can do only what they’re programmed to do. Virtual automation has a long history. Workflow and back-office automation.

Processing 83

Processing Programming Virtualization Technology 83

Nick Desaulniers

APRIL 6, 2020

“War stories” in programming are entertaining tales of truly evil bugs that kept you up at night. asm goto is a GNU C extension that allows for assembly code to transfer control flow to a limited, known set of labels in C code. Recent work. has given me much fulfilment and a long list of truly awful bugs to recount.

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? Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems.

Speed 52

Speed Java AWS Virtualization 52

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

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? Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems.

Speed 40

Speed Java AWS Virtualization 40

SQL Server According to Bob

DECEMBER 18, 2018

product: Virtual Disk. Msft Virtual Disk 1.0 Virtual Environments (VMs and Containers). Virtual environments may not provide the write behavior required to maintain durability. If the virtualization or host caching does not support the Fua requirement you should use forced flush behaviors to maintain durability.

Servers 90

Servers Media Cache Storage 90

Nick Desaulniers

NOVEMBER 20, 2016

clang -c x.c Now that we have our static library, we can statically link it to our program and see the resulting symbols. The -fpic option converts absolute addresses to relative addresses, which allows for different processes to load the library at different virtual addresses and share memory. y.c $ ar -rv libhello.a

C++ 48

C++ Programming Code Virtualization 48

Enprowess

SEPTEMBER 7, 2021

JavaScript is one of the most famous and loved programming languages nowadays. It is growing day by day and has kept its position for eight years in a row and belongs to the top ten most loved programming languages. The performance of React improves because of the Virtual DOM algorithm. Faster virtual DOM. Key Features.

Open Source 52

Open Source Virtualization Programming Servers 52