HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. However, it is crucial that the benchmarking application does not have inherent bottlenecks that artificially limits the scalability of the database. Basic Benchmarking Concepts. To benchmark a database we introduce the concept of a Virtual User.

Programming 67

Programming Benchmarking Virtualization C++ 67

HammerDB

MARCH 25, 2023

Docker build, example CLI scripts were added to build and run the TPROC-C workload in the Tcl language. these were enhanced to also add Python based scripts, and to include scripts for both TPROC-C and TPROC-H and a driver script for Linux environments. With the HammerDB v4.5 In HammerDB v4.6 With HammerDB v4.7

C++ 83

C++ Virtualization Benchmarking Database 83

HammerDB

JANUARY 5, 2019

Some opinions claim that “Benchmarks are meaningless”, “benchmarks are irrelevant” or “benchmarks are nothing like your real applications” However for others “Benchmarks matter,” as they “account for the processing architecture and speed, memory, storage subsystems and the database engine.”

Benchmarking 40

Benchmarking Database Social Media Scalability 40

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. For the network, we can use Iperf to assess the network bandwidth between the client and the database server to ensure it will be enough to meet our peak requirement.

Performance 54

Performance Benchmarking Cache Storage 54

Percona

DECEMBER 23, 2022

The use case is the TPC-C benchmark but executed not on a high-end server but on a lower-spec virtual machine that is I/O limited like for example, with AWS EBS volumes. I decided to use a virtual machine with two CPU cores, four GB of memory, and storage limited to a maximum of 1000 IOPs of 16KB. TPC-C on MyRocks.

Storage 56

Storage Cache C++ Virtualization 56

HammerDB

NOVEMBER 30, 2022

Copyright (C) 2003-2022 Steve Shaw. Copyright (C) 2003-2022 Steve Shaw. Vuser 1:1 Active Virtual Users configured Vuser 1:TEST RESULT : System achieved 39945 NOPM from 92893 SQL Server TPM Vuser 1:Gathering timing data from Active Virtual Users. /hammerdbcli py HammerDB CLI v4.6. Use a different Browser.

Virtualization 44

Virtualization C++ Lambda Monitoring 44

HammerDB

APRIL 27, 2021

In this example we are using SQL Server so the message shows that everything is in order and we can proceed with running tests. This will show the benchmark options dialog. Benchmark Options. and benchmark set with the bm argument. A key aspect is being able to visualise the multithreaded nature of the Virtual Users.

Virtualization 73

Virtualization Benchmarking Database Operating System 73

HammerDB

NOVEMBER 22, 2021

This enables the user to compare and contrast performance across different benchmark scenarios. 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. src/port -L././src/common

Metrics 62

Metrics Benchmarking C++ Database 62

HammerDB

DECEMBER 14, 2022

Copyright (C) 2003-2022 Steve Shaw Type "help" for a list of commands Initialized new SQLite on-disk database /tmp/hammer.DB my.cnf --user=hammerdb 2022-12-14 12:14:05 0 [Note] bin/mysqld (server 10.10.2-MariaDB) and the test will run with the number of Virtual Users equivalent to the number of CPUs. Use a different Browser.

C++ 62

C++ Virtualization Database Benchmarking 62

HammerDB

DECEMBER 1, 2022

Copyright (C) 2003-2022 Steve Shaw Type "help" for a list of commands Initialized new SQLite on-disk database C:/Users/Hdb/AppData/Local/Temp/hammer.DB Copyright (C) 2003-2022 Steve Shaw Type "help" for a list of commands Initialized new SQLite on-disk database C:/Users/Hdb/AppData/Local/Temp/hammer.DB HammerDB CLI v4.6

Virtualization 57

Virtualization C++ Storage Database 57

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This server is spending about a third of its CPU cycles just checking the time! Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5.

Speed 126

Speed Java AWS Virtualization 126

HammerDB

NOVEMBER 5, 2018

If you are new to running Oracle, SQL Server, MySQL and PostgreSQL TPC-C workloads with HammerDB and have needed to investigate I/O performance the chances are that you have experienced waits on writing to the Redo, Transaction Log or WAL depending on the database you are testing. SQL Server DELAYED_DURABILITY. Logging Waits.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

HammerDB

DECEMBER 9, 2020

is the refactoring of the stored procedures for some of the TPROC-C workloads. The TPROC-C workload is derived from the TPC-C workload , the primary metric for TPC-C is called tpmC, the number of new order transactions processed per minute. For SQL Server note that a change in the TPM metric was introduced at v3.3

C++ 52

C++ Benchmarking Metrics Database 52

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. This was followed by a greatly expanded second edition with some additional chapters by Rich Pettit.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This server is spending about a third of its CPU cycles just checking the time! Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). As (C) looked like a kernel rebuild, I started with (D) and (E).

Speed 52

Speed Java AWS Virtualization 52

HammerDB

NOVEMBER 30, 2018

This article Threads Done Right… With Tcl gives an excellent overview of these capabilities and it should be clear that to build a scalable benchmarking tool this thread performance and scalability is key. MS SQL Server/Linux and Windows. These bin and lib directories are not included with the source code. HammerDB CLI v3.1

Architecture 40

Architecture Virtualization Open Source C++ 40

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. This server is spending about a third of its CPU cycles just checking the time! Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6.

Speed 40

Speed Java AWS Virtualization 40

SQL Server According to Bob

JANUARY 11, 2020

Microsoft, ​​ Windows, ​​ Windows NT, ​​ and Windows Server ​​ are registered trademarks of Microsoft Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

Servers 40

Servers Cache Database Media 40

HammerDB

OCTOBER 12, 2018

This post complements the previous best practice guides this time with the focus on MySQL and MariaDB and achieving top levels of performance with the HammerDB MySQL TPC-C test. SELECT DISTINCT c from sbtest where id between ? order by c. SELECT c from sbtest where id=? Copyright (C) 2003-2018 Steve Shaw.

Best Practices 40

Best Practices Scalability Performance C++ 40

Brendan Gregg

FEBRUARY 9, 2018

I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. virtual (bgregg-c5.9xl-i-xxx) 02/09/2018 _x86_64_ (36 CPU) 05:24:51 PM proc/s cswch/s. Hit Ctrl-C to end. In more detail: ## 1. Linux 4.14.12-virtual 05:24:52 PM 0.00 On recent LTS Linux (4.4

Performance 75

Performance Benchmarking Cache Tuning 75

Brendan Gregg

FEBRUARY 8, 2018

I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. virtual (bgregg-c5.9xl-i-xxx) 02/09/2018 _x86_64_ (36 CPU) 05:24:51 PM proc/s cswch/s. Hit Ctrl-C to end. In more detail: ## 1. Linux 4.14.12-virtual 05:24:52 PM 0.00 On recent LTS Linux (4.4

Performance 40

Performance Benchmarking Cache Tuning 40

Smashing Magazine

JANUARY 11, 2021

In the end, it’s not the load events or server response times that define the experience, but the perception of how snappy the interface feels. It used to provide an insight into how quickly the server outputs any data. This knowledge will give you the best optimization target for ongoing efforts. What does it mean?

Performance 145

Performance Cache Media Metrics 145

Alex Russell

MAY 9, 2022

This blindspot usually extends up to the C-suite. Teams achieving this level of discipline about performance begin to eliminate variance from their lab data by running tests in "less noisy" environments than somewhere like a developer's laptop, a shared server, or a VM with underlying system variance.

Performance 86

Performance Latency Metrics Engineering 86