HammerDB

NOVEMBER 30, 2022

Copyright (C) 2003-2022 Steve Shaw. Copyright (C) 2003-2022 Steve Shaw. You should already be aware that due to the Python GIL impacting multithreading performance it is not possible to drive a high-performance database workload directly from Python. Why Tcl is 700% faster than Python for database benchmarking.

Virtualization 45

Virtualization C++ Lambda Monitoring 45

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 particular, this means as we add CPU cores and increase the system load, we see higher performance.

Virtualization 58

Virtualization Performance C++ Database 58

HammerDB

JULY 14, 2021

However, as the two databases diverged from a shared common codebase, this presented a challenge in that it was not possible to modify the workload for MySQL or MariaDB without also changing the other. Checking database library for MariaDB Error: failed to load mariatcl - couldn't load file "/home/HammerDB-4.2/lib/mariatcl0.1/libmariatcl0.1.so":

Testing 58

Testing C++ Virtualization Tuning 58

HammerDB

MAY 5, 2019

Note that the main developer of HammerDB is Intel employee (#IAMINTEL) however HammerDB is a personal open source project and HammerDB has no optimization whatsoever for a database running on any particular architecture. Once the schema was built I shutdown and restarted the database and configured a test script as follows: HammerDB-3.1$

Testing 49

Testing Tuning Latency Storage 49

HammerDB

OCTOBER 12, 2018

Similarly for this guide MySQL can be swapped for a mySQL based databases such as MariaDB. As is also the case this limitation is at the database level (especially the storage engine) rather than the hardware level. As is exactly the same with PostgreSQL for system choice a 2 socket system is optimal for MySQL OLTP performance.

Best Practices 40

Best Practices Scalability Performance C++ 40

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

HammerDB

OCTOBER 8, 2018

This limitation is at the database level rather than the hardware level, nevertheless with up to date hardware (from mid-2018) PostgreSQL on a 2 socket system can be expected to deliver more than 2M PostgreSQL TPM and 1M NOPM with the HammerDB TPC-C test. . Start the PostgreSQL Database. x86_energy_perf_policy -rcpu0: EPB 0.

Best Practices 40

Best Practices Scalability Performance Hardware 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. From HammerDB version 3.2 there is an additional interface that enables HammerDB to run as Web Service. see the documentation for setting the port). . $./hammerdbws hammerdbws HammerDB Web Service v3.2

Virtualization 40

Virtualization Benchmarking C++ Database 40

SQL Server According to Bob

JANUARY 11, 2020

KB sectors run on smaller sectors   14 System and sample databases   15 Determining the formatted sector size of database   15 What sector sizes does SQL Server support? SQL Server 2005 introduces the snapshot database feature for point-in-time databases ​​ and online DBCC operations.

Servers 40

Servers Cache Database Media 40

Adrian Cockcroft

JUNE 21, 2022

We had specializations in hardware, operating systems, databases, graphics, etc. The SE toolkit was fast, had no memory leaks (monitoring scripts could run for years) and let me implement lots of cool performance monitoring ideas. It was the first database sizing guide Sun had ever produced. that a lot of people used.

Tuning 52

Tuning Benchmarking Engineering C++ 52