HammerDB

OCTOBER 24, 2023

by @krithikasatish and @JoshInnis to provide accelerated load performance for both SQL Server TPROC-C and TPROC-H schemas. This earlier functionality has the advantage that there are no intermediate staging files required, and data is inserted into the database with multi-row inserts as soon as it is created.

Servers 62

Servers C++ Benchmarking Virtualization 62

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. The kernel then narrows these to ones separately covering userspace, kernel code, and kernel data.

C++ 61

C++ Hardware Virtualization Benchmarking 61

HammerDB

OCTOBER 18, 2018

An essential part of database performance testing is viewing the statistics generated by the database during the test and in 2009 HammerDB introduced automatic AWR snapshot generation for Oracle for the TPC-C test. With this feature Oracle generates a wealth of performance data that can be reviewed once the test is complete.

Benchmarking 40

Benchmarking Monitoring Performance C++ 40

Percona

JANUARY 2, 2024

We decided to run a few benchmarks to understand how the thread pool affects long-running transactions. When analyzing the workload, I found that the performance drop was caused by applications executing some very long queries like UPDATE affecting many rows, INSERT… SELECT without limit clause and other similar DMLs.

Benchmarking 82

Benchmarking Servers Tuning C++ 82

HammerDB

APRIL 19, 2023

GHz 4th Generation Intel Xeon Scalable processors (code-named Sapphire Rapids) Up to 20% higher compute performance than z1d instances Up to 50 Gbps of networking speed Up to 40 Gbps of bandwidth to the Amazon Elastic Block Store (EBS) We can also verify these capabilities by running some simple benchmarks on the different subsystems.

Performance 54

Performance Benchmarking Cache Storage 54

HammerDB

MARCH 25, 2023

Docker build, example CLI scripts were added to build and run the TPROC-C workload in the Tcl language. these were enhanced to also add Python based scripts, and to include scripts for both TPROC-C and TPROC-H and a driver script for Linux environments. With the HammerDB v4.5 In HammerDB v4.6 With HammerDB v4.7

C++ 83

C++ Virtualization Benchmarking Database 83

Daniel Lemire

FEBRUARY 19, 2019

Let us collect a data point for fun and to motivate further work. As a benchmark, I am going to compute a linear congruential generator (basically a recursive linear function with a remainder thrown in), using these three approaches, plus the naive one. Using 64-bit processor instructions for 32-bit arithmetic is sometimes useful.

Benchmarking 138

Benchmarking C++ Games Code 138

Dynatrace

NOVEMBER 8, 2021

APM solutions track key software application performance metrics using monitoring software and telemetry data. Provide visual data for users to better understand the performance metrics. Your APM tool should help you establish performance benchmarks, so you can understand what good performance looks like.

Artificial Intelligence 233

Artificial Intelligence Monitoring Infrastructure Cloud 233

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. If you wonder what is the difference between MyRocks and RocksDB, consider MyRocks as the piece of code, or the glue, that allows MySQL to store data in RocksDB.

Storage 55

Storage Cache C++ Virtualization 55

Percona

OCTOBER 12, 2023

MySQL is not written in NodeJS, but we specify –lang node to launch the perf profiler, which is compatible with C/C++. A simple sysbench benchmark on MySQL shows an overhead between six and 10 percent on CPU-bound systems when running perf with the default sampling frequency of 4000 Hz.

Code 106

Code Tuning C++ Benchmarking 106

Percona

MAY 1, 2023

Schema design: Evaluating the database schema design and making adjustments such as partitioning large tables, eliminating redundant data, and denormalizing tables for frequently accessed information can improve performance. Slow queries and data retrieval can lead to frustrating delays that impact the user experience.

Tuning 52

Tuning Efficiency Database Performance 52

The Morning Paper

MAY 23, 2019

Existing cache and main memory compression techniques compress data in small fixed-size blocks, typically cache lines. Looking across a set of eight Java benchmarks, we find that only two of them are array dominated, the rest having between 40% to 75% of the heap footprint allocated to objects, the vast majority of which are small.

Cache 61

Cache Benchmarking Hardware Java 61

HammerDB

NOVEMBER 23, 2021

cloud based usage led to the development of a HammerDB HTTP based web service interface with output data stored in a SQLite database repository. dbset db pg dbset bm TPC-C diset tpcc pg_count_ware 20 diset tpcc pg_num_vu 4 diset tpcc pg_superuser postgres diset tpcc pg_superuserpass postgres buildschema. Running a schema build.

Virtualization 70

Virtualization Benchmarking C++ Database 70

The Morning Paper

SEPTEMBER 15, 2019

Fine-grained, secure and efficient data provenance on blockchain systems Ruan et al., In designing a blockchain-friendly provenance mechanism, three aspects unique to the blockchain environment differentiate the problem from that of traditional database provenance: There are no higher-order data operators (e.g. VLDB’19.

Blockchain 55

Blockchain Efficiency Systems Storage 55

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. HammerDB v4.6 does this with the “jobs” command. HammerDB CLI v4.6

Virtualization 57

Virtualization C++ Storage Database 57

HammerDB

NOVEMBER 30, 2022

Copyright (C) 2003-2022 Steve Shaw. Copyright (C) 2003-2022 Steve Shaw. 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. /hammerdbcli py HammerDB CLI v4.6. Type "help()" for a list of commands.

Virtualization 44

Virtualization C++ Lambda Monitoring 44

Adrian Cockcroft

JUNE 21, 2022

Another big jump, but now it was my job to run benchmarks in the lab, and write white papers that explained the new products to the world, as they were launched. I was mostly coding in C, tuning FORTRAN, and when I needed to do a lot of data analysis of benchmark results used the S-PLUS statistics language, that is the predecessor to R.

Tuning 52

Tuning Benchmarking Engineering C++ 52

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

The Morning Paper

AUGUST 29, 2019

There’s a broad set of choices including where you store the data, whether you run your own DBMS nodes or use a service, the kinds of instance types to go for if you do run your own, and so forth. We focused on OLAP-oriented parallel data warehouse products available for AWS and restricted our attention to commercially available systems.

Architecture 76

Architecture Cloud Storage Serverless 76

Percona

AUGUST 31, 2018

That means data is stored in memory twice, first in PostgreSQL buffer and then kernel buffer. The configuration really depends on your machine and the working data set. In the case of a server crash, data might be lost even though the client received a success message on commit. PostgreSQL’s Tuneable Parameters.

Tuning 54

Tuning Database Performance Benchmarking 54

The Netflix TechBlog

JUNE 20, 2023

The first method, which can be seen as a form of weak supervision , leverages auxiliary data in the form of a screenplay by aligning screenplay text with timed text (closed captions, audio descriptions) and assigning timestamps to the screenplay’s scene headers (a.k.a. sluglines). Figure 1: a scene consists of a sequence of shots.

Benchmarking 253

Benchmarking C++ Availability Programming 253

Percona

DECEMBER 26, 2023

Configuring Grafana For our purposes, the Grafana datasource used in this PoC is also the Postgres data cluster that is generating the data to be monitored. It collects various statistics data such as query statistics, query plan, SQL comments, and other performance insights. And yes, it even works in PostgreSQL.

Benchmarking 119

Benchmarking Metrics C++ Database 119

Rigor

JANUARY 13, 2020

Take, for example, The Web Almanac , the golden collection of Big Data combined with the collective intelligence from most of the authors listed below, brilliantly spearheaded by Google’s @rick_viscomi. Data-driven strategies and battle tested techniques will make you a master of mobile-and improve your non-mobile design, too!

Performance 75

Performance Social Media Website Website Performance 75

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 62

Benchmarking Open Source C++ Cache 62

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. This helps to minimise locking allowing multiple sessions to access the same data at the same time. However, it is crucial that the benchmarking application does not have inherent bottlenecks that artificially limits the scalability of the database.

Programming 67

Programming Benchmarking Virtualization C++ 67

Speed Curve

MARCH 5, 2023

I coined this term more than ten years ago, when I was looking at data for a number of sites and noticed that – not only was there a correlation between performance metrics and business/engagement metrics – there was also a noticeable plateau in almost every correlation chart I looked at. That's early!

Performance 119

Performance C++ Metrics Ecommerce 119

ACM Sigarch

OCTOBER 12, 2020

These, let’s call them metal languages , include FORTRAN (introduced in 1957), C (1972), and C++ (1985). Programmers continue to write applications in them, and they continue to evolve: the just approved C++20 standard is the latest example. Despite their age, these languages are far from dead! As Leiserson et al.

C++ 108

C++ Benchmarking Hardware Architecture 108

Scalegrid

JULY 29, 2020

So, we pitted the two connection poolers head-to-head, using the standard pgbench tool, to see which one provides better transactions per second throughput through a benchmark test. All of the PostgreSQL benchmark tests were run under the following conditions: Initialized pgbench using a scale factor of 100. Throughput Benchmark.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

HammerDB

OCTOBER 18, 2019

HammerDB doesn’t publish competitive database benchmarks, instead we always encourage people to be better informed by running their own. So over at Phoronix some database benchmarks were published showing PostgreSQL 12 Performance With AMD EPYC 7742 vs. Intel Xeon Platinum 8280 Benchmarks . bin/createdb pgbench./bin/pgbench

Benchmarking 63

Benchmarking Performance Hardware C++ 63

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

Highly Scalable

MARCH 10, 2015

Retail is one of the most important business domains for data science and data mining applications because of its prolific data and numerous optimization problems such as optimal prices, discounts, recommendations, and stock levels that can be solved using data analysis methods.

Retail 152

Retail C++ Analytics Metrics 152

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. Logging Waits.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

HammerDB

DECEMBER 14, 2022

Copyright (C) 2003-2022 Steve Shaw Type "help" for a list of commands Initialized new SQLite on-disk database /tmp/hammer.DB linux-systemd-x86_64/data default_authentication_plugin=mysql_native_password socket=/tmp/mariadb.sock port=3306 log-error=/tmp/mariadb.log bind_address=redpoll. Copyright (C) 2003-2022 Steve Shaw.

C++ 62

C++ Virtualization Database Benchmarking 62

The Morning Paper

MAY 12, 2019

An open-source benchmark suite for microservices and their hardware-software implications for cloud & edge systems Gan et al., A typical architecture diagram for one of these services looks like this: Suitably armed with a set of benchmark microservices applications, the investigation can begin! ASPLOS’19.

Open Source 61

Open Source Hardware Benchmarking Systems 61

SQL Performance

DECEMBER 8, 2021

As an example, use the following code to fill the Auctions table with a small set of sample data: SET NOCOUNT ON ; DELETE FROM dbo. Large Set of Sample Data. To test the performance of the solutions, you'll need a larger set of sample data. L0 AS ( SELECT 1 AS c. It will be used as a benchmark.

C++ 133

C++ Code Benchmarking Performance 133

Speed Curve

MARCH 5, 2023

I first encountered it more than ten years ago, when I was looking at data for a number of sites and noticed that – not only was there a correlation between performance metrics and business/engagement metrics – there was also a noticeable plateau in almost every correlation chart I looked at. That's early!

Performance 52

Performance C++ Metrics Ecommerce 52

HammerDB

DECEMBER 9, 2020

is the refactoring of the stored procedures for some of the TPROC-C workloads. The TPROC-C workload is derived from the TPC-C workload , the primary metric for TPC-C is called tpmC, the number of new order transactions processed per minute. Another key feature introduced with HammerDB v4.0 Therefore results from v4.0

C++ 52

C++ Benchmarking Metrics Database 52