Percona

DECEMBER 20, 2023

Unfortunately, the performance in benchmarks is almost the same as for 4KB pages. Kubectl helps to check the amount of huge pages available. kubectl describe nodes NODENAME … hugepages-1Gi 0 (0%) 0 (0%) hugepages-2Mi 1Gi (25%) 1Gi (25%) … The tool reports only 2MB pages availability in the above output.

C++ 96

C++ Virtualization Benchmarking Database 96

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

DECEMBER 5, 2020

compared to previous releases is that the workload names have changed from TPC-C and TPC-H to TPROC-C and TPROC-H respectively and therefore a key question is how are the v4.0 The simple answer is nothing, the workloads are exactly the same workloads derived from the TPC-C and TPC-H specifications and HammerDB v4.0

C++ 40

C++ Benchmarking Virtualization Open Source 40

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

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

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

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

Scalegrid

JULY 13, 2020

Compare PostgreSQL vs. Oracle functionality across available tools, capabilities and services. Not available. Not available. Not available. New Oracle versions are generally available every 2-4 years. Data encryption can be achieved with advanced security plugins like pgcrypto which are available for free.

Open Source 244

Open Source Tuning C++ Database 244

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. We answer this question affirmatively. That ‘reasonable’ performance cost is a 6.8%

C++ 61

C++ Hardware Virtualization Benchmarking 61

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., It’s a pretty impressive effort to pull together and make available in open source (not yet available as I write this) such a suite, and I’m sure explains much of the long list of 24 authors on this paper.

Open Source 61

Open Source Hardware Benchmarking Systems 61

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 67

Programming Benchmarking Virtualization C++ 67

Percona

JULY 19, 2023

Well, “easy” if you know just a tiny bit of C++. Our function will implement a ULID generator using a C++ library from ChrisBove/ulid. 132:39: warning: unused parameter ‘initid’ [-Wunused-parameter] extern "C" void ulid_deinit(UDF_INIT *initid) {} ~~~~~~~~~~^~~~~~ [100%] Linking CXX shared module././plugin_output_directory/ulid.so

C++ 78

C++ Servers Benchmarking Best Practices 78

Particular Software

SEPTEMBER 27, 2022

Starting with.NET 5, we can mark the lambda as static with C# 9. In this way, the compiler will allow only state that is static or available inside the lambda to be accessed; otherwise, it will display an error. <>9__0_1 ?? (<>c.<>9__0_1 <>9__0_1 = new Action(<>c.<>9.<Main>b__0_1)));

Lambda 98

Lambda C++ Benchmarking Code 98

Daniel Lemire

FEBRUARY 19, 2019

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. My source code is available. There is no silver bullet but a simple C function can beat a state-of-the-art optimizing compiler.

Benchmarking 138

Benchmarking C++ Games Code 138

Dynatrace

NOVEMBER 8, 2021

Organizations use APM to ensure system availability, optimize service performance and response times, and improve user experiences. By carefully considering the various APM tools available and how well they meet your needs, you’ll have the best chance of picking the right one for your organization. APM solutions: A primer.

Artificial Intelligence 232

Artificial Intelligence Monitoring Infrastructure Cloud 232

Percona

OCTOBER 12, 2023

That said, your application may not be in the list of supported languages, but if it’s compatible with any of the available profilers, you can still produce flame graphs. MySQL is not written in NodeJS, but we specify –lang node to launch the perf profiler, which is compatible with C/C++. ✔ Launching profiler.

Code 108

Code Tuning C++ Benchmarking 108

HammerDB

MAY 26, 2022

If you are not already familiar with the programming languages that HammerDB uses, then this earlier post serves as an ideal introduction to what makes up the highest performing GIL free database benchmarking application. set MARIADB_CONFIG=C:Program FilesMariaDBMariaDB Connector C 64-bit set MYSQL_CONFIG=C:Program FilesMySQLMySQL Server 8.0

C++ 113

C++ Database Open Source Servers 113

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. The TPC-C dataset I used was with a scale of 200. TPC-C on MyRocks. MyRocks handles indexes in a similar fashion.

Storage 55

Storage Cache C++ Virtualization 55

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

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 Under the HammerDB home directory is a scripts directory containing example scripts to test all supported databases except for Db2 in both tcl and python format for both TPROC-C and TPROC-H workloads. TMP/hammer.DB

C++ 62

C++ Virtualization Database Benchmarking 62

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

Percona

MAY 1, 2023

PostgreSQL performance optimization is an ongoing process involving monitoring, benchmarking, and adjustments to maintain high-performing PostgreSQL databases. In production environments, it is observed that a large value for shared_buffer gives really good performance, though you should always benchmark to find the right balance.

Tuning 52

Tuning Efficiency Database Performance 52

Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c. Checking those available: $ cat /sys/devices/system/clocksource/clocksource0/available_clocksource. Microbenchmark os::javaTimeMillis() on both systems.

Speed 126

Speed Java AWS Virtualization 126

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

n0derunner

JUNE 28, 2019

We can use these same appliance images on Nutanix AHV to easily do a Postgres database benchmark. Enable/disable ssh in bitnami images Connecting to Postgres in bitnami images Note – when you “sudo -c postgres <some-psql-tool> the password it is asking for is the Postgres DB password (stored in./bitnami-credentials)

Benchmarking 40

Benchmarking C++ Virtualization Database 40

HammerDB

APRIL 27, 2021

This displays the available CLI commands with “help command” providing detailed information about the command and arguments required. This will show the benchmark options dialog. Benchmark Options. and benchmark set with the bm argument. In the CLI the print dict command shows us the available options.

Virtualization 73

Virtualization Benchmarking Database Operating System 73

The Morning Paper

AUGUST 29, 2019

use the TPC-H benchmark to assess Redshift, Redshift Spectrum, Athena, Presto, Hive, and Vertica to find out what works best and the trade-offs involved. We focused on OLAP-oriented parallel data warehouse products available for AWS and restricted our attention to commercially available systems. System initialisation time.

Architecture 76

Architecture Cloud Storage Serverless 76

Percona

AUGUST 31, 2018

In production environments, it is observed that a large value for shared_buffer gives really good performance, though you should always benchmark to find the right balance. The effective_cache_size provides an estimate of the memory available for disk caching. Plus another recent post on benchmarks: Tuning PostgreSQL for sysbench-tpcc.

Tuning 54

Tuning Database Performance Benchmarking 54

The Netflix TechBlog

JUNE 20, 2023

In the second approach, we show that a relatively simple, supervised sequential model (bidirectional LSTM or GRU) that uses rich, pretrained shot-level embeddings can outperform the current state-of-the-art baselines on our internal benchmarks. However, it presupposes the availability of high-quality screenplays.

Benchmarking 253

Benchmarking C++ Availability Programming 253

Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c Here's some experimental approaches I could also explore: Disable tracesys/syscall_trace. Microbenchmark os::javaTimeMillis() on both systems. Try changing the kernel clocksource.

Speed 52

Speed Java AWS Virtualization 52

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]. TCL was designed as a language to be closely tied with C/C++ and at this lower level there is the compiled TCL (tclsh) or TCL/TK (wish) interpreter and supporting libraries.

Architecture 40

Architecture Virtualization Open Source C++ 40

Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c Here's some experimental approaches I could also explore: Disable tracesys/syscall_trace. Microbenchmark os::javaTimeMillis() on both systems. include <sys/time.h>

Speed 40

Speed Java AWS Virtualization 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. SELECT DISTINCT c from sbtest where id between ? order by c. SELECT c from sbtest where id=? Copyright (C) 2003-2018 Steve Shaw.

Best Practices 40

Best Practices Scalability Performance C++ 40

Brendan Gregg

FEBRUARY 9, 2018

This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. Hit Ctrl-C to end. This can turn a 1% overhead (syscall cycles alone) into a 7% overhead.

Performance 75

Performance Benchmarking Cache Tuning 75

Smashing Magazine

JUNE 1, 2022

The most popular, by far, is the Google Lighthouse report (available in Chrome Developer Tools) and Google’s Page Speed Insights. They are more of a benchmark than a true measurement of real user experience. Some of the popular synthetic measurement tools are WebPageTest , SiteSpeed.io , Splunk Synthetic Monitoring , and Dynatrace.

Website 131

Website Design Network Best Practices 131

Brendan Gregg

FEBRUARY 8, 2018

This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. Hit Ctrl-C to end. This can turn a 1% overhead (syscall cycles alone) into a 7% overhead.

Performance 40

Performance Benchmarking Cache Tuning 40

Randon ASCII

APRIL 17, 2018

When you own all of the code then this may involve some back of the envelope estimates, competitive benchmarking, or intuition tuned by experience. The diagnosis is that file notification buffers are allocated out of pool memory ( ExAllocatePoolWithTag ) and then filled with the available notification data. You know where to find me.

Monitoring 43

Monitoring C++ Code Processing 43