HammerDB

JUNE 27, 2022

It enables the user to measure database performance and make comparative judgements about database hardware and software. HammerDB has graphical and command line interfaces for the Windows and Linux operating systems. When reporting TPROC-C workloads the key metric is known as NOPM or New Orders per Minute.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Adrian Cockcroft

FEBRUARY 9, 2023

The layers of platforms start at the bottom with hardware choices such as which CPU architectures and vendors you want to use. The next layer is operating system platforms, what flavor of Linux, what version of Windows etc. The third principle is that the interface to a platform should be driven by the users of the platform.

Engineering 137

Engineering Serverless Lambda AWS 137

HammerDB

FEBRUARY 25, 2021

On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute. This post explains why HammerDB made the language decisions it made to make it the best performing and most usable database benchmarking software. Database interfaces in C.

Programming 67

Programming Benchmarking Virtualization C++ 67

Percona

JUNE 20, 2023

In order to understand “segmentation fault,” it is a must to know the basic idea of segmentation and its implementation in C programming. The following are possible causes for segmentation fault: Operating system issues Buggy OS kernel Faulty hardware(specifically memory) Bug in a product (e.g.,

Programming 84

Programming C++ Database Virtualization 84

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? Let us have a look at the most popular types of mobile testing for applications and hardware.

Mobile 82

Mobile Testing Hardware C++ 82

The Morning Paper

MAY 23, 2019

Today’s paper introduces Zippads , which compared to a state of the art compressed memory hierarchy is able to achieve a 1.63x higher compression ratio and improve performance by 17%. If we compress objects instead of cache lines though, we can get to a 56% compression ratio (c). ” The big idea. There are two big “Aha!”

Cache 61

Cache Benchmarking Hardware Java 61

Randon ASCII

OCTOBER 4, 2020

First, a bit of operating-system design context. Ideally the CPU goes to sleep when Sleep(1) is called, in order to save power, so how does the operating system (OS) wake your thread if the CPU is sleeping? The answer is hardware interrupts. Timer interrupts and their raison d’être. That’s crazy!

Programming 145

Programming Games Hardware Operating System 145

The Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data.

Hardware 56

Hardware Programming Media Storage 56

Nick Desaulniers

APRIL 6, 2020

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. Jann Horn gets back to me first: Can you use QEMU to look at the hardware frame (which contains values pushed by the hardware in response to the page fault) in early_idt_handler_common?

C++ 67

C++ Hardware Code Virtualization 67

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.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Smashing Magazine

JANUARY 7, 2019

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Web performance is a tricky beast, isn’t it? How do we actually know where we stand in terms of performance, and what our performance bottlenecks exactly are? Vitaly Friedman.

Performance 103

Performance Cache Metrics Network 103

The Agile Manager

SEPTEMBER 30, 2020

IBM had launched the trademarked Personal Computer in 1981 using an open architecture of widely available components from 3rd party sources such as Intel and the fledgling Disk Operating System from an unknown firm in Seattle called Microsoft. In 1987, IBM introduced a new product, the Personal System/2.

Hardware 52

Hardware Social Media Media Strategy 52

Percona

AUGUST 30, 2018

Because recognizing if the workload is read intensive or write intensive will impact your hardware choices, database configuration as well as what techniques you can apply for performance optimization and scalability. You can also choose to look at event counts or at the time it takes to do operations. Why should you care?

Benchmarking 47

Benchmarking Database Operating System Architecture 47

Smashing Magazine

NOVEMBER 16, 2021

Conventional computers now sport touchscreens and otherwise blur the lines between device types – and between mobile and desktop operating systems. Touch Design for Mobile Interfaces presents and shares real information on hardware, people, interactions, and environments. If you are in the C-suite, do yourself a favor and read.

Mobile 87

Mobile Design Best Practices Website 87

HammerDB

JANUARY 5, 2019

For example the following chart (with the actual data removed for the reasons described further in this post) shows the HammerDB TPC-C workload run against the same database on different processing architectures (grouped by colour) and speed with the most recent at the top. Shareability.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

Brendan Gregg

AUGUST 8, 2017

If they are higher than your CPU count, then you might have a performance problem (it depends). 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.

Latency 111

Latency Metrics C++ Systems 111

SQL Server According to Bob

JANUARY 11, 2020

Subsystem / Path The ​​ I/O subsystem or path ​​ includes ​​ those ​​ components ​​ that are ​​ used to support an I/O operation.

Servers 40

Servers Cache Database Media 40

Testsigma

JUNE 19, 2020

It supports multi programming languages like Python, Java, C# etc. It supports multi-operating system support like Windows, Linux etc. Selenium consume less hardware support for test cases execution 7. We are using Selenium + JUnit to perform the test case creation and execution. Test Case Creation in Selenium.

Testing Tools 60

Testing Tools Testing Open Source Java 60

SQL Server According to Bob

DECEMBER 18, 2018

Durability is a cornerstone of any database system and starting with SQL Server 2017 on Linux Cumulative Update 6 (CU6), SQL Server on Linux enables “Forced Flush” behavior as described in this article , improving durability on non-Fua optimized systems. “Be Val and Dylan performing power outage durability testing and adding new tests.

Servers 90

Servers Media Cache Storage 90

High Scalability

NOVEMBER 25, 2019

For e.g., if accessing file system over WebDAV or FTP has performance issues, and it will take 4 hours to fix, then for those 4 hours, you can just kill FTP/WebDAV at kong/firewall and ask customers to use web UI or other mechanisms to work. Who performs what roles? Which languages do you use to develop your system?

Architecture 52

Architecture Cache Azure Storage 52