HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. All the databases that HammerDB tests implement a form of MVCC (multi-version concurrency control). On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute.

Programming 67

Programming Benchmarking Virtualization C++ 67

HammerDB

MARCH 27, 2023

introduces more lightweight database specific Docker Images, so if you only want to run benchmarks against a specific database you can go from having no benchmarking environment to reviewing your results in as little as 3 commands. How to deploy HammerDB CLI fast with Docker HammerDB v4.7 scripts/tcl/postgres/tprocc/pg_tprocc.sh

Benchmarking 51

Benchmarking Testing Database C++ 51

HammerDB

MARCH 25, 2023

scripts/tcl/maria/tprocc/maria_tprocc_buildschema.tcl echo "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-" echo "RUN HAMMERDB TEST" echo "+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-"./hammerdbcli If HammerDB is running on a separate system from the database under test then you should modify this value accordingly.

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

JUNE 22, 2023

Job CLI Interface Jobs can also continue to be queried directly from the CLI with additional functionality at this interface such as querying the timings of individual Virtual Users. setOption(option_a3a1672ce6814324bd80d8b84cff1557); </script> </body> </html> Summary In this post we have introduced new HammerDB v4.8

Benchmarking 57

Benchmarking C++ Virtualization Database 57

HammerDB

NOVEMBER 23, 2021

this web interface has been enhanced to add command line functionality to the service as well as extending the ability to query the database of configuration, results and timing data to be returned in JSON format, enabling a long-term repository of HammerDB benchmark data for integrating HammerDB into service based cloud environments.

Virtualization 70

Virtualization Benchmarking C++ Database 70

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems. This will slow this test a little.) Running this on the two systems saw similar results.

Speed 126

Speed Java AWS Virtualization 126

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

JULY 6, 2023

This way is typically the fastest way to determine the maximum throughput of a database with minimal configuration, and over time has been proven to show the same performance ratios between systems as a well configured fixed throughput setup. Vuser 1:Test complete, Taking end Transaction Count.

Virtualization 57

Virtualization C++ Database Code 57

HammerDB

DECEMBER 14, 2022

The TPC publishes an official Docker image on Docker Hub to enable the rapid deployment and testing of databases with HammerDB. This image includes example scripts to build schemas and test your databases with a single command. Our Linux test system is running a MariaDB 10.10 Our Linux test system is running a MariaDB 10.10

C++ 62

C++ Virtualization Database Benchmarking 62

Percona

MARCH 17, 2023

We have tested PMM version 2.33.0 Please note that the focus of these tests was around standard metrics gathering and display, we’ll use a future blog post to benchmark some of the more intensive query analytics (QAN) performance numbers. Virtual Memory utilization was averaging 48 GB of RAM.

Monitoring 103

Monitoring Scalability Cache Database 103

Percona

APRIL 7, 2023

To illustrate this, I ran the Sysbench-TPCC synthetic benchmark against two different GCP instances running a freshly installed Percona Server for MySQL version 8.0.31 This explains, in part , how PostgreSQL performed better out of the box for this test workload. The throughput didn’t double but increased by 57%.

Tuning 137

Tuning Cache Servers Benchmarking 137

Percona

JUNE 22, 2023

Defining high availability In general terms, high availability refers to the continuous operation of a system with little to no interruption to end users in the event of hardware or software failures, power outages, or other disruptions. Some disruption might occur, but it will be minimal. Fault tolerance aims for zero downtime and data loss.

Availability 111

Availability Database Open Source Hardware 111

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> alter system flush buffer_cache; System altered.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Brendan Gregg

MARCH 16, 2024

The problem is that this system has a default libc that has been compiled without frame pointers, so any stack walking stops at the libc layer, producing a partial stack that's missing the application frames. This is pretty common and usually goes unnoticed as the flame graph looks ok at first glance.

Java 145

Java Cache Google Hardware 145

HammerDB

NOVEMBER 30, 2022

HammerDB will rely on the system installed Python interpreter and at a specific version as described in the following table. print(z," VU TEST") . print("TEST SEQUENCE COMPLETE"). Vuser 1:Test complete, Taking end Transaction Count. From version v4.6 Python Version Dependency. Use a different Browser. loadscript().

Virtualization 44

Virtualization C++ Lambda Monitoring 44

The Morning Paper

MAY 27, 2019

And this all has to work for whole-system executions, not just the C-language portion of user processes. The work includes changes to the CHERI ISA, the C compiler, the C language runtime, the virtual memory APIs, and the CheriBSD kernel. The MIPS rows show the test suite results on a standard mips64 system.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Apica

MAY 10, 2019

Whatever size of company you are, performance monitoring and testing is a critical part of the success you will have. It is also worth noting that brand popularity doesn’t translate into more success if you are not testing load to confirm your streaming services will performs. Apica’s scale is enterprise-grade.

Testing 40

Testing Performance Social Media Wireless 40

HammerDB

DECEMBER 1, 2022

In particular, after a running a test it would be ideal to have a repository where we could verify the configuration of the workload that was run, the results and any timing or transaction count data generated to bring all the log output into a central location. This happens for both a schema build and running a test. TMP/hammer.DB

Virtualization 57

Virtualization C++ Storage Database 57

HammerDB

DECEMBER 5, 2020

The HammerDB TPROC-C workload by design intended as CPU and memory intensive workload derived from TPC-C – so that we get to benchmark at maximum CPU performance at a much smaller database footprint. I.e. if system A generated 1.5X more transactions than system B in the fully audited benchmark then the HammerDB result was also 1.5X

C++ 40

C++ Benchmarking Virtualization Open Source 40

HammerDB

JULY 8, 2019

HammerDB already has 2 interfaces with which to interface with the commands to build and test databases using the GUI interface or CLI. The following test script shows how this interaction can be done also including deliberate errors to demonstrate error handling. From HammerDB version 3.2 more restchk.tcl #!/bin/sh

Benchmarking 40

Benchmarking Virtualization C++ Database 40

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems. This will slow this test a little.) Running this on the two systems saw similar results.

Speed 52

Speed Java AWS Virtualization 52

Testsigma

JANUARY 12, 2021

Enters Cross Browser Testing, a comprehensive way of finding and fixing compatibility bottlenecks. Along with the browser, the “ Viewport ” is also a key aspect of cross browser compatibility testing as it plays a critical role in how the application will display. What Is Covered Under Cross Browser Compatibility Testing?

Website 65

Website Benchmarking Operating System Testing Tools 65

HammerDB

MAY 10, 2021

HammerDB Variable or Step Workloads are an advanced testing feature that enables you to automatically vary the load on the database over a period of time. When taking this approach you would not focus on the test result but instead monitor the databases ability to cope with the variation in demand and transaction response times.

Virtualization 52

Virtualization C++ Database Monitoring 52

Percona

AUGUST 22, 2023

We’ll wrap it up by suggesting high availability open source solutions, and we’ll introduce you to support options for ensuring continuous high performance from your systems. A basic high availability database system provides failover (preferably automatic) from a primary database node to redundant nodes within a cluster.

Availability 80

Availability Hardware Open Source Database 80

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Microbenchmark os::javaTimeMillis() on both systems. This will slow this test a little.) Running this on the two systems saw similar results.

Speed 40

Speed Java AWS Virtualization 40

Adrian Cockcroft

JUNE 21, 2022

Photo by Adrian I spent six years at Cambridge Consultants, building some interesting systems, managing our Sun workstations and learning a lot, but by then Sun had opened a sales office across the street, and I wanted to find out what they were going to release next, before everyone else.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Rigor

FEBRUARY 19, 2020

One of the key benefits of synthetic monitoring is that you can define the specific actions of a test, allowing you to walk through key flows of your application like a checkout flow or a sign-up flow, to verify its functionality and performance. Can you manually edit recorded tests or do you need to completely re-record?

Monitoring 59

Monitoring Benchmarking Mobile Traffic 59

Brendan Gregg

FEBRUARY 9, 2018

Much of my testing was on Linux 4.14.11 I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate.

Performance 75

Performance Benchmarking Cache Tuning 75

Smashing Magazine

JUNE 3, 2022

How would we test to see if there is any difference between a good sans serif and a serif typeface with users? These compiled systems for letters and symbols, which are representations of sounds and information, get a lot of use and are a large part of graphic communication. How well do typefaces work? Large preview ).

Performance 110

Performance Design Best Practices Testing 110

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. The agent directory contains the agent code to be run on the system under test to gather the CPU utilisation information.

Architecture 40

Architecture Virtualization Open Source C++ 40

Alex Russell

APRIL 29, 2021

As an engineer on a browser team, I'm privy to the blow-by-blow of various performance projects, benchmark fire drills, and the ways performance marketing (deeply) impacts engineering priorities. With each team, benchmarks lost are understood as bugs. All modern browsers are fast, Chromium and Safari/WebKit included. Lower is better.

Media 145

Media Games Education Engineering 145

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. As is exactly the same with PostgreSQL for system choice a 2 socket system is optimal for MySQL OLTP performance. HammerDB difference from Sysbench.

Best Practices 40

Best Practices Scalability Performance C++ 40

VoltDB

JUNE 1, 2017

It was – like the hypothetical movie I describe above – more than a little bit odd, as you could leave a session discussing ever more abstract layers of virtualization and walk into one where they emphasized the critical importance of pinning a network interface to a specific VM for optimal performance.

Hardware 56

Hardware Latency Virtualization Cloud 56

Percona

DECEMBER 20, 2018

We’ll note how some of the Linux parameter settings used OS tuning may vary according to different system types: physical, virtual or cloud. Not being entirely sure of what I was seeing during a customer visit, I set out to create some simple tests to measure the impact of triggers on database performance.

Database 40

Database Tuning Performance AWS 40

Percona

SEPTEMBER 1, 2023

This can affect the overall performance of your database system, potentially leading to slower response times. This can introduce maintenance overhead, particularly in large and complex database systems. Changes to triggers should be carefully reviewed and tested to ensure they do not introduce unintended consequences.

Cache 62

Cache Database Games Healthcare 62

Brendan Gregg

FEBRUARY 8, 2018

Much of my testing was on Linux 4.14.11 I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate.

Performance 40

Performance Benchmarking Cache Tuning 40