Brendan Gregg

AUGUST 18, 2019

It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. The probe specifies what events to instrument, the filter is optional and can filter down the events based on a boolean expression, and the action is the mini program that runs. Attaching 2 probes. ^C name global.

Latency 57

Latency C++ Cache Programming 57

The Netflix TechBlog

APRIL 17, 2019

264/AVC, currently, the most ubiquitous video compression standard supported by modern devices, often in hardware. Reference software serves as the basis for standard development, a framework, in which the performance of video coding tools is evaluated. Furthermore, unit tests will cover new code. The success was repeated by H.264/AVC,

Open Source 167

Open Source Scalability Speed Efficiency 167

Sutter's Mill

APRIL 14, 2011

Scott Meyers, Andrei Alexandrescu and I are continuing to craft and announce the technical program for C++ and Beyond (C&B) 2011 , and two more sessions are now posted. All talks are brand-new material created specifically for C&B 2011. Here are short blurbs; follow the links for longer descriptions.

C++ 40

C++ Programming Strategy Code 40

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. But what would happen if I compiled my code on a 32 bit machine?

C++ 59

C++ Programming Code Hardware 59

Adrian Cockcroft

JUNE 21, 2022

I became the Sun UK local specialist in performance and hardware, and as Sun transitioned from a desktop workstation company to sell high end multiprocessor servers I was helping customers find and fix scalability problems. We had specializations in hardware, operating systems, databases, graphics, etc. that a lot of people used.

Tuning 52

Tuning Benchmarking Engineering C++ 52

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

DZone

FEBRUARY 27, 2021

This begins not only in designing the algorithm or coming out with efficient and robust architecture but right onto the choice of programming language. Recently, I spent some time checking on the Performance (not a very detailed study) of the various programming languages. C++ SOLUTION (Will Be Uploaded Later). Ahem, Slow!

Java 210

Java C++ Benchmarking Programming 210

Daniel Lemire

FEBRUARY 8, 2019

The division by a power of two ( / (2 N )) can be implemented as a right shift if we are working with unsigned integers, which compiles to single instruction: that is possible because the underlying hardware uses a base 2. uint64_t c = UINT64_C ( 0xFFFFFFFFFFFFFFFF ) / d + 1 ; // fastmod computes (n mod d) given precomputed c.

C++ 279

C++ Benchmarking Hardware Testing 279

HammerDB

FEBRUARY 25, 2021

This is why the choice of programming language is so important from the outset. 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. Database interfaces in C. and the following from TPROC-H. select top 100.

Programming 67

Programming Benchmarking Virtualization C++ 67

ACM Sigarch

OCTOBER 12, 2020

These, let’s call them metal languages , include FORTRAN (introduced in 1957), C (1972), and C++ (1985). Programmers continue to write applications in them, and they continue to evolve: the just approved C++20 standard is the latest example. Despite their age, these languages are far from dead! As Leiserson et al.

C++ 108

C++ Benchmarking Hardware Architecture 108

Abhishek Tiwari

SEPTEMBER 15, 2024

million lines of C code. That's about the same amount of code you'd find in a high-end smartphone operating system. The choice of C as the programming language is telling. Imagine spending years meticulously planning, coding, and testing a single app. The coding phase itself is equally rigorous.

Engineering 52

Engineering Social Media Hardware C++ 52

Randon ASCII

OCTOBER 4, 2020

It is desirable for a program to be able to go to sleep and then wake up a little while later. The answer is hardware interrupts. The OS programs a timer chip that then triggers an interrupt that wakes up the CPU and the OS can then schedule your thread. Timer interrupts and their raison d’être. Decades of madness.

Programming 145

Programming Games Hardware Operating System 145

Sutter's Mill

FEBRUARY 13, 2017

I don’t get to Europe very often apart from ISO C++ standards meetings, but this spring I’ve been able to accept invitations for two English-language European events in the last week of April. Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm).

Latency 48

Latency C++ Hardware Performance 48

Official Blog - World Web Technology

APRIL 29, 2024

React Native Being an open-source programming language introduced by Facebook, Reactjs is the most viable language for web app developers to go to when they come across to build various web solutions for various platforms. The apps are compiled into indigenously written code that is compatible with both the operating systems.

Social Media 52

Social Media Mobile Open Source Hardware 52

Official Blog - World Web Technology

APRIL 29, 2024

React Native Being an open-source programming language introduced by Facebook, Reactjs is the most viable language for web app developers to go to when they come across to build various web solutions for various platforms. The apps are compiled into indigenously written code that is compatible with both the operating systems.

Social Media 52

Social Media Mobile Open Source Hardware 52

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

Tech News Gather

AUGUST 25, 2022

The platform is based on a purpose-oriented programming language that is simple to learn. Unlike other programs, it is compatible with both iOS and Android. Because the development is built on a single codebase, it saves time when testing the program across many platforms. Write clear and understandable code.

Development 52

Development Hardware Mobile Open Source 52

The Morning Paper

MAY 12, 2019

An open-source benchmark suite for microservices and their hardware-software implications for cloud & edge systems Gan et al., The paper examines the implications of microservices at the hardware, OS and networking stack, cluster management, and application framework levels, as well as the impact of tail latency. ASPLOS’19.

Open Source 61

Open Source Hardware Benchmarking Systems 61

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

Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere.

Speed 112

Speed Java AWS Virtualization 112

Randon ASCII

FEBRUARY 25, 2018

In this particular investigation, which spanned twenty months, we suspected hardware failure, compiler bugs, linker bugs, and other possibilities. Jumping too quickly to blaming hardware or build tools is a classic mistake, but in this case the mistake was that we weren’t thinking big enough. failure rate.

Programming 79

Programming Hardware Cache Code 79

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

Sutter's Mill

JUNE 16, 2011

Yesterday I had the privilege of talking about some of the work we’ve been doing to support massive parallelism on GPUs in the next version of Visual C++. The video of my talk announcing C++ AMP is now available on Channel 9. If they are, then one programming model should be able to address them all. More to come…

C++ 40

C++ Hardware Programming Cloud 40

The Morning Paper

JANUARY 28, 2020

A tenant should not be able to see the code or data of other tenants (isolation). If you want a lightweight, fast-starting, easy to program for, embeddable application runtime that also offers isolation, then a natural choice is V8 isolates. High performance. Introducing Shredder. Shredder in action.

Serverless 99

Serverless Storage Latency Cloud 99

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

Brendan Gregg

SEPTEMBER 25, 2021

Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere.

Speed 52

Speed Java AWS Virtualization 52

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. Device Flush.

Servers 90

Servers Media Cache Storage 90

Testsigma

JUNE 19, 2020

testing and is integratable with multiple programming languages (i.e. There are various disadvantages of using Selenium(we will discuss it later), one of them is that it requires strong technical knowledge about programming language because it’s script can only be written with the help of programming languages like Java, Python etc.

Testing Tools 60

Testing Tools Testing Open Source Java 60

Brendan Gregg

SEPTEMBER 25, 2021

Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere.

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

AUGUST 8, 2017

Nowadays, the source code to old operating systems can also be found online. TABLE OF EXP(-T/C) FOR T = 5 SEC. EXPFF: EXP 0.920043902 ;C = 1 MIN EXP 0.983471344 ;C = 5 MIN EXP 0.994459811 ;C = 15 MIN. Linux is also hard coding the 1, 5, and 15 minute constants. This, too, was a dead end. . ;-).

Latency 111

Latency Metrics C++ Systems 111

John McCalpin

NOVEMBER 5, 2016

In the latest (October 2016) revision of Intel’s Instruction Extensions Programming Reference , Intel has disclosed a fairly dramatic departure from these “traditional” approaches. Notes on notation: C[i][j] is invariant in the innermost loop, so I refer to the values in the accumulator as elements of the C array.

Cache 40

Cache C++ Latency Hardware 40

ScaleOut Software

JULY 27, 2018

The technique is called data-parallel computing , and many IMDGs (like ScaleOut StateServer Pro ®) provide APIs that make it easy to use in languages like Java, C#, and C++. This would enable the application to avoid bottlenecks and harness the IMDG’s scalable computing power to boost performance.

Scalability 40

Scalability Cache Airlines Ecommerce 40

ScaleOut Software

JULY 27, 2018

The technique is called data-parallel computing , and many IMDGs (like ScaleOut ComputeServer ®) provide APIs that make it easy to use in languages like Java, C#, and C++. This would enable the application to avoid bottlenecks and harness the IMDG’s scalable computing power to boost performance.

Scalability 40

Scalability Cache Airlines Ecommerce 40

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. Instead, we found puzzle after puzzle. Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40

SQL Server According to Bob

JANUARY 11, 2020

Character POS ASCII Value Formula Value A 1 65 67 C 2 67 69 Checksum 136 Comparing ​​ the checksum values indicates ​​ that the values do not match and ​​ damage ​​ has occurred to the data. ​​ Remote mirroring captures writes and duplicates them ​​ remotely.

Servers 40

Servers Cache Database Media 40

High Scalability

NOVEMBER 25, 2019

Java used to power core file system code. Python used to power client-side code, certain microservices, migration scripts, internal scripts. We use event-based sync in our desktop sync client code, as server events are happening they get pushed to the client from server and the client replays them locally. Data interdependence.

Architecture 52

Architecture Cache Azure Storage 52