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

HammerDB

JULY 5, 2022

Python is a popular programming language, especially for beginners, and consequently we see it occurring in places where it just shouldn’t be used, such as database benchmarking. We use stored procedures because, as the introductory post shows, using single SQL statements turns our database benchmark into a network test).

Benchmarking 98

Benchmarking Database C++ Virtualization 98

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. Similarly for this guide MySQL can be swapped for a mySQL based databases such as MariaDB. SELECT DISTINCT c from sbtest where id between ? order by c.

Best Practices 40

Best Practices Scalability Performance C++ 40

HammerDB

OCTOBER 8, 2018

This post gives a HOWTO guide on system configuration for achieving top levels of performance with the HammerDB PostgreSQL TPC-C test. D isabling all C-states or Idle states is likely to reduce overall performance by reducing the available turbo frequency. Initially it is best leave all of these states enabled. cat /proc/meminfo.

Best Practices 40

Best Practices Scalability Performance Hardware 40

Percona

AUGUST 25, 2023

3308 ssl JS > c root@localhost:3308 MySQL localhost:3308 ssl JS > cluster1=dba.getCluster() MySQL localhost:3308 ssl JS > cluster1.status() 3308", "memberRole": "SECONDARY", "memberState": "(MISSING)", "mode": "n/a", "readReplicas": {}, "role": "HA", "shellConnectError": "MySQL Error 2003: Could not open connection to '127.0.0.1:3308':

Traffic 77

Traffic Database C++ Servers 77

HammerDB

JULY 16, 2021

One of the most important concepts in analysing database performance is that of understanding scalability. Plotting these data points enables us to understand the scalability of the database software being tested on that system. In this example, we will compare MySQL 5.7.33 and MySQL 8.0.25 and MySQL 8.0.25

Virtualization 57

Virtualization Performance C++ Database 57

HammerDB

NOVEMBER 30, 2018

However if you have downloaded the source code and are looking to add features or make modifications such as adding new databases you may be wondering once you have the source code where to start. However HammerDB will not be able to connect to a database yet and the librarycheck command included with the CLI gives an indication why.

Architecture 40

Architecture Virtualization Open Source C++ 40