Dynatrace

APRIL 8, 2021

In short, Lambda functions can take on almost all of the operational duties of running an application; all you need to do is provide the code that should be executed on a given event or trigger. These served as our benchmark when creating our Lambda monitoring extension. A quick primer on Lambda functions.

Lambda 246

Lambda AWS Serverless Monitoring 246

Dynatrace

APRIL 8, 2021

In short, Lambda functions can take on almost all of the operational duties of running an application; all you need to do is provide the code that should be executed on a given event or trigger. These served as our benchmark when creating our Lambda monitoring extension. A quick primer on Lambda functions.

Lambda 246

Lambda AWS Serverless Monitoring 246

HammerDB

SEPTEMBER 24, 2024

The key findings of the article were as follows: This server had a HammerDB benchmark running against it. But why are we running a COPY operation during a benchmark anyway? So this COPY statement is coming from the schema build phase and not the HammerDB benchmark workload at all. and start the build running.

Benchmarking 68

Benchmarking Performance Metrics Database 68

HammerDB

OCTOBER 23, 2023

HammerDB uses stored procedures to achieve maximum throughput when benchmarking your database. HammerDB has always used stored procedures as a design decision because the original benchmark was implemented as close as possible to the example workload in the TPC-C specification that uses stored procedures.

Benchmarking 63

Benchmarking Database Network C++ 63

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 103

Speed Java AWS Virtualization 103

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 68

Programming Benchmarking Virtualization C++ 68

HammerDB

MARCH 25, 2023

Copy Code Copied Use a different Browser ~/HammerDB-4.7$ Copy Code Copied Use a different Browser ~/HammerDB-4.7/scripts/tcl/maria/tprocc$ Copy Code Copied Use a different Browser ~/HammerDB-4.7/scripts/tcl/maria/tprocc$ It will create the number of virtual users to the number of CPUs on the system where HammerDB is running.

C++ 84

C++ Virtualization Benchmarking Database 84

HammerDB

JUNE 27, 2022

HammerDB is a software application for database benchmarking. Databases are highly sophisticated software, and to design and run a fair benchmark workload is a complex undertaking. The Transaction Processing Performance Council (TPC) was founded to bring standards to database benchmarking, and the history of the TPC can be found here.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

HammerDB

JUNE 22, 2023

Copy Code Copied Use a different Browser hammerdb>jobs disable 1 Disabling jobs repository, restart HammerDB to take effect and in the GUI use the Jobs Disabled/Enabled option. in in the DATA directory, set this as follows: Copy Code Copied Use a different Browser <commandline> <sqlite_db>/opt/HammerDB-4.8/DATA/hammer.db</sqlite_db>

Benchmarking 58

Benchmarking C++ Virtualization Database 58

The Morning Paper

SEPTEMBER 24, 2020

Being static , it has the advantage that analysis results can be produced solely from source code without the need to execute the program. This means for example that it can be applied to analyse source code repositories and pull requests, be used as an additional test in CI pipelines, and even give assistance in your IDE if it’s fast enough.

Java 80

Java Cache Benchmarking Programming 80

HammerDB

JULY 8, 2024

This is an important consideration that is often missed, so although it seems obvious, it is worth reiterating that benchmarking applications are not typically designed to be disconnected and the database restarted whilst the workload is running. Copy Code Copied Use a different Browser HammerDB-4.11/config/connectpool$

Database 52

Database Benchmarking Virtualization C++ 52

Brendan Gregg

MARCH 16, 2024

Apart from library code, maybe your application doesn't have frame pointers either, in which case everything is broken. Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway.

Java 137

Java Cache Google Hardware 137

The Morning Paper

MAY 27, 2019

The basic question here is whether it is practical to support a large-scale C-language software stack with strong pointer-based protection… with only modest changes to existing C code-bases and with reasonable performance cost. code is not given access to excessive capabilities. We answer this question affirmatively. slower to 9.8%

C++ 61

C++ Hardware Virtualization Benchmarking 61

Percona

JUNE 22, 2023

High availability works through a combination of the following: No single point of failure (SPOF) : You must eliminate any single point of failure in the database environment, including physical or virtual hardware the database system relies on that would cause it to fail. there cannot be high availability.

Availability 132

Availability Database Open Source Hardware 132

HammerDB

DECEMBER 14, 2022

The image can be found on Docker Hub under the tpcorg account. Docker Pull. On a system with docker installed, use docker pull tpcorg/hammerdb to pull the latest image. Use a different Browser. 10b4eb41ac75: Pull complete. 9021d634457d: Pull complete. b365f60d978b: Pull complete. 215f30832a93: Pull complete. 689ecb6b15e8: Pull complete.

C++ 63

C++ Virtualization Database Benchmarking 63

Percona

APRIL 12, 2023

Co-founder Eliot Horowitz recounts ( {coding}bootcamps.io ): “MongoDB was born out of our frustration using tabular databases in large, complex production deployments. Though still not “profitable” by many benchmarks, it’s a lot closer to being so, perhaps in a big way.) looking out for MongoDB Inc.

Open Source 98

Open Source Programming Database Servers 98

HammerDB

NOVEMBER 22, 2021

This enables the user to compare and contrast performance across different benchmark scenarios. The example shows a TPROC-C workload running with 4 Active Virtual Users. The events are colour coded and indexed in the graph to the wait event groups. Metrics view for benchmark. PostgreSQL Graphical Metrics.

Metrics 63

Metrics Benchmarking C++ Database 63

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. Benchmarking the target Two of the more popular database benchmarks for MySQL are HammerDB and sysbench. For storage, FIO is generally used. 4.22 %usr 38.40

Performance 55

Performance Benchmarking Cache Storage 55

HammerDB

JULY 6, 2024

Copy Code Copied Use a different Browser./tpcc.lua Copy Code Copied Use a different Browser #!/bin/tclsh Copy Code Copied Use a different Browser./hammerdbcli Copy Code Copied Use a different Browser./tpcc.lua 0 MariaDB tpm and a HammerDB example script as follows: Copy Code Copied Use a different Browser #!

C++ 52

C++ Hardware Benchmarking Virtualization 52

HammerDB

JULY 6, 2023

Copy Code Copied Use a different Browser Vuser 1:80 Active Virtual Users configured Vuser 1:TEST RESULT : System achieved 701702 NOPM from 1631827 MariaDB TPM Fixing throughput with keying and thinking time The key concept to understanding fixed throughput is that of keying and thinking time.

Virtualization 58

Virtualization C++ Database Code 58

HammerDB

DECEMBER 1, 2022

if one does not already exist in this location or open the existing one. For example on Windows an example of opening a new database. Use a different Browser. HammerDB CLI v4.6 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 58

Virtualization C++ Storage Database 58

HammerDB

JUNE 27, 2024

Arguably, the most common beginning errors with database benchmarking is for a user to select a single point of utilisation (usually overconfigured) and then extrapolate conclusions about system performance from this single point. Copy Code Copied Use a different Browser #!/bin/tclsh

C++ 52

C++ Performance Benchmarking Virtualization 52

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. Keyboard Lock API.

Media 145

Media Games Education Engineering 145

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. Copy Code Copied Use a different Browser /home/hammerdb/HammerDB-4.7#./scripts/tcl/postgres/tprocc/pg_tprocc.sh

Benchmarking 52

Benchmarking Testing Database C++ 52

SQL Performance

AUGUST 27, 2019

On August 7, 2019, AMD finally unveiled their new 7nm EPYC 7002 Series of server processors, formerly code-named "Rome" at the AMD EPYC Horizon Event in San Francisco. The initial reviews and benchmarks for these processors have been very impressive: AMD EPYC 7002 Series Rome Delivers a Knockout. More total PCIe lanes and bandwidth.

Servers 52

Servers Benchmarking Virtualization Architecture 52

Brendan Gregg

FEBRUARY 9, 2018

I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. I collected CPU profile as a [CPU flame graph] for both systems, but, for a change, they was boring: extra cycles were just in the syscall code, as one would expect reading the [KPTI changes].

Performance 72

Performance Benchmarking Cache Tuning 72

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. . <iotune>

Storage 56

Storage Cache C++ Virtualization 56

Rigor

FEBRUARY 19, 2020

Do you need to manually write code or steps? Can you verify with the response code? False positives can lead to alert fatigue so here are some of the more advanced capabilities to look for as well: Does the tool show you a screenshot or the source code of where the error was? Is it a physical system or virtual?

Monitoring 59

Monitoring Benchmarking Mobile Testing 59

HammerDB

NOVEMBER 30, 2022

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. HammerDB will show the prompt “hammerdb>>>” to indicate that it is running a Python interpreter. Use a different Browser. $./hammerdbcli

Virtualization 45

Virtualization C++ Lambda Monitoring 45

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 52

Speed Java AWS Virtualization 52

Percona

AUGUST 22, 2023

Some of the most important elements include: No single point of failure (SPOF): You must eliminate any SPOF in the database environment, including any potential for an SPOF in physical or virtual hardware. Without enough infrastructure (physical or virtualized servers, networking, etc.), there cannot be high availability.

Availability 98

Availability Hardware Open Source Database 98

HammerDB

NOVEMBER 30, 2018

HammerDB is open source and all of the source code is available at the sourceforge Git development site here [link] or the github mirror here [link]. In fact all of this source code is also included in readable form with each and every release. Otherwise the code is the same on all platforms. Programming Languages.

Architecture 40

Architecture Virtualization Open Source C++ 40

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 40

Speed Java AWS Virtualization 40

Enprowess

SEPTEMBER 20, 2021

Like React, Vue features two-way binding, uses components and a virtual DOM. This JS library uses elements – isolated items of code that may be used to create a lot of complicated logic and UIs. They use lazy loading to extend performance rates and reduce loading times and code refreshes via virtual DOMs. What is React?

Open Source 52

Open Source Mobile Google Scalability 52

Percona

SEPTEMBER 1, 2023

Per-Row Execution : For each affected row, the trigger’s code is executed. This code can include SQL statements, procedures, or other actions defined within the trigger. Access to OLD and NEW Values : Within the trigger code, you can access the OLD and NEW values for each column of the current row.

Cache 75

Cache Database Games Healthcare 75

Brendan Gregg

FEBRUARY 8, 2018

I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. I collected CPU profile as a [CPU flame graph] for both systems, but, for a change, they was boring: extra cycles were just in the syscall code, as one would expect reading the [KPTI changes].

Performance 40

Performance Benchmarking Cache Tuning 40

HammerDB

OCTOBER 12, 2018

For anyone benchmarking MySQL with HammerDB it is important to understand the differences from sysbench workloads as HammerDB is targeted at a testing a different usage model from sysbench. Error in Virtual User 1: mysqlexec/db server: Table 'mysql.proc' doesn't exist. Vuser 1:56 Active Virtual Users configured. Configure MySQL.

Best Practices 40

Best Practices Scalability Performance C++ 40