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. He had it up and running on Wednesday. that a lot of people used.

Tuning 52

Tuning Benchmarking Engineering C++ 52

SQL Performance

DECEMBER 9, 2020

Testing different base table cardinalities is just one dimension to try. I’ll present the performance tests that I’ve done with my solution. You can create supporting tables in the user database if needed. Let’s proceed to performance testing. There could be many others. You can add hints as needed.

C++ 114

C++ Servers Testing Processing 114

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. In this example a test with 2 minute rampup and 5 minute test time can be seen.

Benchmarking 40

Benchmarking Monitoring Performance C++ 40

SQL Performance

DECEMBER 9, 2020

Testing different base table cardinalities is just one dimension to try. I’ll present the performance tests that I’ve done with my solution. You can create supporting tables in the user database if needed. Let’s proceed to performance testing. There could be many others. You can add hints as needed.

C++ 61

C++ Servers Testing Processing 61

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. SELECT DISTINCT c from sbtest where id between ?

Best Practices 40

Best Practices Scalability Performance C++ 40

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. Hit Ctrl-C to end.

Performance 75

Performance Benchmarking Cache Tuning 75

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. Hit Ctrl-C to end.

Performance 40

Performance Benchmarking Cache Tuning 40