Dynatrace

SEPTEMBER 15, 2020

During the Performance Clinic episode, I asked Stefano to tell us more about this changing world and how we can leverage automation, AI and machine learning to optimize modern software stacks despite the increased complexity. performance test) when the application reaches a stable throughput without violating response time constraints.

Performance 183

Performance Java Metrics Cloud 183

Adrian Cockcroft

JUNE 21, 2022

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. We had specializations in hardware, operating systems, databases, graphics, etc. Rich Pettit is one of the best programmers I ever met.

Tuning 52

Tuning Benchmarking Engineering C++ 52

DZone

JANUARY 23, 2021

According to a performance test conducted by Arnaldo Carvalho de Melo, a senior software engineer at Red Hat, the process traced using strace ran 173 times slower, which is disastrous for a production environment. If you need to dynamically trace Linux process system calls, you might first consider strace.

Systems 166

Systems Performance Software Engineering Performance Testing 166

Apica

MAY 10, 2019

One thing is clear: when planning for the consumer experience to be simple and easy to use, the backend infrastructure and performance becomes much more complicated. Whatever size of company you are, performance monitoring and testing is a critical part of the success you will have. Apica’s scale is enterprise-grade.

Testing 40

Testing Performance Social Media Wireless 40

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. However what if you want to review performance data in real time as the test is running?

Benchmarking 40

Benchmarking Monitoring Performance C++ 40

n0derunner

JULY 23, 2019

The Postgres DB is totally un-tuned and contains purely default settings. The aim of the experiment was to see how data-locality might affect a running database workload, not to generate the maximum TPS. Many different queries are executing in parallel, some hitting RAM cache, some hitting storage. appeared first on n0derunner.

Benchmarking 76

Benchmarking Storage Tuning Cache 76

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Much of my testing was on Linux 4.14.11 Some older kernels have the KAISER patches for Meltdown, and so far the performance overheads look similar. and 4.14.12 DTLB and 4.4%

Performance 75

Performance Benchmarking Cache Tuning 75

SQL Performance

DECEMBER 9, 2020

In a comment to my article, Marcos Kirchner mentioned that he tested my solution with varying table value constructor cardinalities, and got different execution times for the different cardinalities. Testing different base table cardinalities is just one dimension to try. You can create supporting tables in the user database if needed.

C++ 114

C++ Servers Testing Processing 114

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. Similarly for this guide MySQL can be swapped for a mySQL based databases such as MariaDB. HammerDB difference from Sysbench. 10 rows in set (0.02

Best Practices 40

Best Practices Scalability Performance C++ 40

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Much of my testing was on Linux 4.14.11 Some older kernels have the KAISER patches for Meltdown, and so far the performance overheads look similar. and 4.14.12 DTLB and 4.4%

Performance 40

Performance Benchmarking Cache Tuning 40

SQL Performance

DECEMBER 9, 2020

In a comment to my article, Marcos Kirchner mentioned that he tested my solution with varying table value constructor cardinalities, and got different execution times for the different cardinalities. Testing different base table cardinalities is just one dimension to try. You can create supporting tables in the user database if needed.

C++ 61

C++ Servers Testing Processing 61

SQL Server According to Bob

JANUARY 11, 2020

Microsoft SQL Server I/O Basics Author: ​​ Bob Dorr, Microsoft SQL Server Escalation Published: ​​ December, 2004 SUMMARY: ​​ Learn the I/O requirements for Microsoft SQL Server database file operations. This will help you increase system performance and avoid I/O environment errors.

Servers 40

Servers Cache Media Hardware 40

High Scalability

NOVEMBER 25, 2019

Chokepoint : Even sharded Berkeley DB was choking under the stress and there was a database crash with recovery taking hours, it had to be replaced. Automate schema management for some remaining databases. We use a variant of git-flow, for every ticket, we clone the repo and we run automation tests on every merge request.

Architecture 52

Architecture Cache Azure Storage 52