The Morning Paper

MAY 27, 2019

CheriABI: enforcing valid pointer provenance and minimizing pointer privilege in the POSIX C run-time environment Davis et al., And this all has to work for whole-system executions, not just the C-language portion of user processes. ASPLOS’19. The protections are hardware implemented and cannot be forged in software.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Scalegrid

JULY 29, 2020

However, these must be set up outside the PostgreSQL system, while PgBouncer can offload this to the PostgreSQL server. PgBouncer provides a virtual database that reports various useful statistics. All of the PostgreSQL benchmark tests were run under the following conditions: Initialized pgbench using a scale factor of 100.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute. Basic Benchmarking Concepts. To benchmark a database we introduce the concept of a Virtual User.

Programming 67

Programming Benchmarking Virtualization C++ 67

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. Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. Operating System: Ubuntu 22.04

Performance 54

Performance Benchmarking Cache Storage 54

HammerDB

JULY 6, 2023

In this example, we will use the CLI to run TPROC-C on a MariaDB database to illustrate the concepts. 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.

Virtualization 57

Virtualization C++ Database Code 57

HammerDB

DECEMBER 14, 2022

Our Linux test system is running a MariaDB 10.10 On a system with docker installed, use docker pull tpcorg/hammerdb to pull the latest image. Copyright (C) 2003-2022 Steve Shaw Type "help" for a list of commands Initialized new SQLite on-disk database /tmp/hammer.DB Docker Hub. Docker Pull. Use a different Browser. hammerdbcli.

C++ 62

C++ Virtualization Database Benchmarking 62

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. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5. include <sys/time.h>

Speed 126

Speed Java AWS Virtualization 126

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

NOVEMBER 30, 2022

HammerDB will rely on the system installed Python interpreter and at a specific version as described in the following table. Copyright (C) 2003-2022 Steve Shaw. Copyright (C) 2003-2022 Steve Shaw. From version v4.6 Python Version Dependency. hammerdbcli py HammerDB CLI v4.6. Type "help()" for a list of commands.

Virtualization 44

Virtualization C++ Lambda Monitoring 44

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

HammerDB

APRIL 27, 2021

This will show the benchmark options dialog. Benchmark Options. and benchmark set with the bm argument. In the example below we have modified the SQL Server, number of warehouses to build and the virtual users to build them. A key aspect is being able to visualise the multithreaded nature of the Virtual Users.

Virtualization 73

Virtualization Benchmarking Database Operating System 73

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

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

HammerDB

JULY 8, 2019

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. see the documentation for setting the port). . $./hammerdbws hammerdbws HammerDB Web Service v3.2

Benchmarking 40

Benchmarking Virtualization C++ Database 40

HammerDB

MAY 10, 2021

The replicas are defined in steps.xml in the config directory to determine how many virtual users each replica will configure, how soon after the previous instance has started the replica should start and how long it will run for. <steps> Note that it is expected for Virtual User 1 of the replicas to end immediately with the message.

Virtualization 52

Virtualization C++ Database Monitoring 52

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

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. As (C) looked like a kernel rebuild, I started with (D) and (E).

Speed 52

Speed Java AWS Virtualization 52

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. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6. include <sys/time.h>

Speed 40

Speed Java AWS Virtualization 40

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. These bin and lib directories are not included with the source code. You can download and compile TCL/TK 8.6 HammerDB CLI v3.1

Architecture 40

Architecture Virtualization Open Source C++ 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. As is exactly the same with PostgreSQL for system choice a 2 socket system is optimal for MySQL OLTP performance. order by c.

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. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate. In more detail: ## 1. Linux 4.14.12-virtual 05:24:52 PM 0.00

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. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate. In more detail: ## 1. Linux 4.14.12-virtual 05:24:52 PM 0.00

Performance 40

Performance Benchmarking Cache Tuning 40

Alex Russell

MAY 9, 2022

Only teams that master their systems can make intentional trade-offs. Panglossian nonsense. --> Organisations that serve their tools tread water no matter how advanced their technology, while groups that intentionally manage systems can succeed on any stack. [1]. This blindspot usually extends up to the C-suite.

Performance 86

Performance Latency Metrics Engineering 86

SQL Server According to Bob

JANUARY 11, 2020

​​ Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation.

Servers 40

Servers Cache Database Media 40

Smashing Magazine

JANUARY 11, 2021

Geekbench CPU performance benchmarks for the highest selling smartphones globally in 2019. Per se, GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. Faster devices on faster networks have virtually no stalls. compared to early 2015.

Performance 145

Performance Cache Media Metrics 145