HammerDB

FEBRUARY 25, 2021

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. TPROC-C however is derived from the TPC-C specification and requires application logic around the SQL.

Programming 68

Programming Benchmarking C++ Virtualization 68

HammerDB

OCTOBER 17, 2018

This is a very typical FAQ and although detailed in the documentation some extra details may help in sizing and configuration. The official TPC-C test has a fixed number of users per warehouse and uses keying and thinking time so that the workload generated by each user is not intensive.

C++ 40

C++ Testing Virtualization Cache 40

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. In addition to the TPC-C specification for OLTP workloads, the TPC has also developed the TPC-E specification.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

Sutter's Mill

FEBRUARY 23, 2020

This post is an attempt to shed light on this situation, and perhaps reduce some of the time spent on unresolved ongoing design debates in the C++ community. References What references are and how to use them In C++, a C& or C&& reference is an indirect way to refer to an existing object. That’s it.

C++ 76

C++ Lambda Games Design 76

Nick Desaulniers

APRIL 6, 2020

My blog has been quieter than I would have liked; hopefully I can find more time to document some of these, maybe in series form. This is documented further in linux-insides. 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.

C++ 67

C++ Hardware Code Virtualization 67

Percona

SEPTEMBER 28, 2023

Swappiness Swappiness is a Linux kernel parameter determining how aggressively the Linux virtual machine swaps pages between memory and the swap space on the system’s disk. If you haven’t, please install it ( Percona Toolkit documentation ). 1 Let’s quickly fix it.

Servers 128

Servers Best Practices Database Open Source 128

HammerDB

APRIL 27, 2021

If the library failed to load consult the HammerDB documentation on installing and configuring your libraries with the PATH environment variable for Windows or LIBRARY_PATH environment for Linux. In the example below we have modified the SQL Server, number of warehouses to build and the virtual users to build them. librarycheck.

Virtualization 74

Virtualization Benchmarking Database Operating System 74

O'Reilly

FEBRUARY 4, 2025

Then, development of even higher-level compiled languages like Fortran, COBOL, and their successors C, C++, and Java meant that most programmers no longer wrote assembly code. Suddenly, the user interface was made up of human-readable documents, shown in a browser with links that could in turn call programs on remote servers.

Programming 145

Programming Google Infrastructure Internet 145

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. Some of these have plenty of free documentation online, like for tracing, and others not yet. 181 /proc/cpuinfo 181 /proc/stat 1461 /proc/net/dev 1461 /proc/net/if_inet6 ^C.

C++ 52

C++ Virtualization Programming Code 52

Brendan Gregg

SEPTEMBER 5, 2017

Hit Ctrl-C to end. ^C C operation = 'read' usecs : count distribution 0 -> 1 : 0 | | 2 -> 3 : 0 | | 4 -> 7 : 4479 | *| 8 -> 15 : 1028 | | 16 -> 31 : 14 | | 32 -> 63 : 1 | | [.]. There's a lot about Linux containers that isn't well documented yet, especially since it's a moving target. Tracing ZFS operation latency.

Virtualization 75

Virtualization AWS Engineering Hardware 75

HammerDB

NOVEMBER 22, 2021

usr/bin/install -c -m 644./pg_stat_statements--1.4.sql./pg_stat_statements--1.8--1.9.sql./pg_stat_statements--1.7--1.8.sql./pg_stat_statements--1.6--1.7.sql./pg_stat_statements--1.5--1.6.sql./pg_stat_statements--1.4--1.5.sql. include/internal -D_GNU_SOURCE -c -o pgsentinel.o /src/port -L././src/common lib',--enable-new-dtags -lm./postgresql-14.1/contrib/pg_stat_statements$

Metrics 63

Metrics Benchmarking C++ Database 63

HammerDB

DECEMBER 9, 2020

for the TPROC-C test there was the option to connect to one database instance only. The connections are named c, c2, c3 and so on with no limit on the number of connections that you define. For more information on configuring the XML connect pool see the relevant section in the HammerDB documentation. Prior to HammerDB v4.0

C++ 52

C++ Virtualization Database Monitoring 52

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). Not having a standards compliant C compiler makes writing more portable C code even trickier, and is a subject for another blog post). This document. and inttypes.h

C++ 59

C++ Programming Code Hardware 59

HammerDB

NOVEMBER 30, 2022

If you need a different version of Python you can build HammerDB from source as detailed in the documentation to use any version of Python 3 that you wish. Copyright (C) 2003-2022 Steve Shaw. Copyright (C) 2003-2022 Steve Shaw. Red Hat Enterprise Linux. Starting the CLI in Python Mode. Type "help()" for a list of commands.

Virtualization 45

Virtualization C++ Lambda Monitoring 45

SQL Performance

APRIL 10, 2019

You can also find it as part of the document ISO/IEC 9075-2:2016, Information technology — Database languages — SQL — Part 2: Foundation (SQL/Foundation) (available for purchase). The input is a table or table expression, and the output is a virtual table. price ) AS bottomprice , LAST ( C.

C++ 73

C++ Servers Virtualization Code 73

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. Virtual automation has a long history. Virtually anything can be scripted—including keyboard, mouse, and GUI actions.

Processing 92

Processing Programming Virtualization Technology 92

Enprowess

SEPTEMBER 7, 2021

Real-time software system – Collaboration tools used for video/audio conferencing, document writing, Chat applications, etc. React is an open-source front-end library based on JavaScript, created and maintained by Facebook, and is well known for its virtual DOM feature. Faster virtual DOM. Use cases of Node.js

Open Source 52

Open Source Virtualization Programming Servers 52

HammerDB

APRIL 19, 2023

Regardless of whether the computing platform to be evaluated is on-prem, containerized, virtualized, or in the cloud, it is crucial to consider several essential factors. There are several ways to find out this information with the easiest way being by referring to the documentation. and 8.0.32 HammerDB 4.5 to 8.0.32.

Performance 55

Performance Benchmarking Cache Storage 55

HammerDB

OCTOBER 23, 2023

HammerDB has always used stored procedures as a design decision because the original benchmark was implemented as close as possible to the example workload in the TPC-C specification that uses stored procedures. Additionally, reviewing official TPC-C full disclosure reports highlighted that all vendors also use stored procedures.

Benchmarking 63

Benchmarking Database Network C++ 63

HammerDB

JULY 8, 2019

see the documentation for setting the port). . $./hammerdbws Copyright (C) 2003-2019 Steve Shaw Type "help" for a list of commands The xml is well-formed, applying configuration Initialized new SQLite in-memory database Starting HammerDB Web Service on port 8080 Listening for HTTP requests on TCP port 8080.

Virtualization 40

Virtualization Benchmarking C++ Database 40

Particular Software

MARCH 28, 2022

Saga analyzers Sagas have a powerful API, but it’s limited by the confines of C#. You can create a class that is a lousy saga but is still perfectly valid C# code. Check out Roslyn analyzers for sagas in our documentation for all the details. ?? You focus on your business logic. Let’s take a look at the new features. ??

Development 52

Development C++ Virtualization Metrics 52

HammerDB

MAY 5, 2019

Fortunately the HammerDB TPC-C/OLTP workload intentionally has a great deal of contention between threads and is therefore ideal for testing spin-locks. Copyright (C) 2003-2018 Steve Shaw. The following was the results in graph form: with a peak performance of the following: Vuser 1:64 Active Virtual Users configured.

Testing 49

Testing Tuning Latency Storage 49

Nick Desaulniers

JANUARY 25, 2015

A book I recently ordered was Scott Meyers’ Effective Modern C++. When C++ undergoes another revolution, Scott’s book may become irrelevant, at which point the adjective modern. At the time, I was headlong into a project helping Disney port Where’s My Water from C++ to JavaScript using Emscripten.

C++ 43

C++ Google Open Source Games 43

Enprowess

MAY 24, 2022

It allows developers to create complex UIs from a small and isolated code called “components” ReactJS comprises two parts: the pieces containing HTML code, components, and an HTML document – where all your components will render. More incredible Speed with Virtual DOM. Key features of ReactJS. It uses HTML tags.

Mobile 52

Mobile Open Source Virtualization Speed 52

Testsigma

FEBRUARY 3, 2021

Because it is difficult to have so many real users to test, we use automated tools to create virtual users. Memory Validator- Memory leak analysis for C#,Net, C++ Valgrind memcheck- Memory leaks for C and C++. Such scenarios need to be tested via spike tests. Majorly used Tools: JMeter, LoadRunner.

Mobile 82

Mobile Testing Hardware C++ 82

Brendan Gregg

JANUARY 17, 2018

OSes usually show you virtual memory and resident memory, shown as the "VIRT" and "RES" columns in top. The tool also has a cumulative mode (-C), which resets the referenced flags once then takes continuous measurements. wss.pl -C `pgrep -n mysqld` 1. That's the working set size. Eg, once per second: #./wss.pl 102.36. [.].

Cache 62

Cache Latency C++ Programming 62

Abhishek Tiwari

SEPTEMBER 10, 2017

For other operating systems please see detailed documentation on how to install kubectl. Using kubectl you can interact with namespaces.Namespaces are virtual clusters and typically used to isolate projects deployed on Kubernetes cluster. Using Homebrew package manager: brew install kubectl. Kubectl Basics.

Development 49

Development Operating System Virtualization Code 49

Alex Russell

MAY 9, 2022

Engagement: Poor performance has a well-documented relationship to reduced engagement. This blindspot usually extends up to the C-suite. At Level 3, teams begin to document important user journeys within their products and track the influence of performance across the full conversion funnel.

Performance 99

Performance Latency Metrics Engineering 99

Brendan Gregg

JANUARY 16, 2018

OSes usually show you virtual memory and resident memory, shown as the "VIRT" and "RES" columns in top. The tool also has a cumulative mode (-C), which resets the referenced flags once then takes continuous measurements. wss.pl -C `pgrep -n mysqld` 1. That's the working set size. Eg, once per second: #./wss.pl 102.36. [.].

Cache 40

Cache Latency C++ Programming 40

Baron Schwartz

MARCH 1, 2019

Virtual “smart folders” can be created from searches. Sometimes there are strange letter M’s in front of contact names, and other oddities I never was able to understand or find in the documentation. A lot of times I’d press a key that was supposed to work, like C to compose, and nothing would happen.

Mobile 40

Mobile Innovation Design C++ 40

SQL Server According to Bob

FEBRUARY 13, 2020

SQL Server BDC Hints and Tips: VDI Seeding for High Availability A high availability SQL Server BDC uses the Virtual Device Interface (VDI) to seed databases to secondary replicas. ( [link] ) ​​ VDI History -​​ [link] VDI ​​ was introduced to SQL Server allowing custom providers to backup/restore data to/from (..)

Servers 40

Servers Availability Transportation Database 40

SQL Server According to Bob

DECEMBER 18, 2018

SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Refer to the ISO documentation on data integrity for complete details. product: Virtual Disk. Msft Virtual Disk 1.0

Servers 90

Servers Media Cache Storage 90

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information ​​ that is contained ​​ in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. After reading ​​ this document you will better understand SQL Server I/O needs and capabilities.

Servers 40

Servers Cache Database Media 40

The Netflix TechBlog

AUGUST 10, 2022

Virtual Production?—?A A Validation Framework For Unreal Engine By Adam Davis, Jimmy Fusil, Bhanu Srikanth and Girish Balakrishnan Game Engines in Virtual Production The use of Virtual Production and real time technologies has markedly accelerated in the past few years.

Virtualization 242

Virtualization Engineering Games C++ 242

Smashing Magazine

AUGUST 26, 2021

If you host your e-commerce pages on a virtual strip mall owned by a company that also runs its own online shopping business, how long will it be before they use what they learn from your customers to outcompete you? Privacy is Power by Carissa Véliz offers an effective and well-documented overview of why privacy matters.

Social Media 143

Social Media Technology Technology Website 143

Smashing Magazine

JANUARY 11, 2021

You can download the spreadsheet as Google Sheets, Excel, OpenOffice document or CSV. You can check quick detils and full documentation about the stack (Hotwire). According to Tim Kadlec, for example, "AMP documents tend to be faster than their counterparts, but they don’t necessarily mean a page is performant. Large preview ).

Performance 145

Performance Cache Metrics Media 145

The Netflix TechBlog

OCTOBER 14, 2024

This document details the intriguing process of debugging this issue, all the way from the UI down to the Linux kernel. Upon closely examining the user’s Notebook, we noticed a library called pystan , which provides Python bindings to a native C++ library called stan, looked suspicious. Specifically, pystan uses asyncio.

Latency 214

Latency Virtualization Traffic Processing 214