Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Over the years, more and more articles have been published about clocksource in virtual machines, and it's now a well-known issue. include <sys/time.h>

Speed 103

Speed Java AWS Virtualization 103

HammerDB

NOVEMBER 5, 2018

This post at an entry-level discusses the options you have to improve log throughput in your benchmark environment. . The first example shows a data load, the second a TPC-C based workload with 5 virtual users and the 2nd example with 10 virtual users. A good example of how tuning is an iterative process.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Dynatrace

FEBRUARY 25, 2021

The virtual CPU is turned off. When we set out to create the new Lambda extension, we benchmarked other dedicated Lambda monitoring solutions that were already on the market. Stay tuned?for If there’s an idle instance of a Lambda function available, no cold start is needed, and the function can be executed right away.

Lambda 231

Lambda AWS Monitoring Serverless 231

Percona

DECEMBER 20, 2018

Linux OS Tuning for MySQL Database Performance. In this post we will review the most important Linux settings to adjust for performance tuning and optimization of a MySQL database server. We’ll note how some of the Linux parameter settings used OS tuning may vary according to different system types: physical, virtual or cloud.

Database 41

Database Tuning Performance AWS 41

Percona

APRIL 12, 2023

Though still not “profitable” by many benchmarks, it’s a lot closer to being so, perhaps in a big way.) So if they can’t beat ‘em in the DBaaS space, they often feel like they have to join ‘em — to the tune of total stack sharing or some proprietary arrangement.

Open Source 86

Open Source Programming Database Servers 86

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). Over the years, more and more articles have been published about clocksource in virtual machines, and it's now a well-known issue. include <sys/time.h>

Speed 40

Speed Java AWS Virtualization 40

Apica

MAY 10, 2019

The Apica LoadTest solution uses innovative technologies like monitoring nodes and load clusters to reliably deliver and sustain a large-scale load of virtual users (VUs) to Hollywood for different, realistic user scenarios all at the same time. Load and stress-testing benchmark goals for the backend technological components.

Testing 40

Testing Performance Social Media Wireless 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. I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. Much of my testing was on Linux 4.14.11

Performance 72

Performance Benchmarking Cache Tuning 72

n0derunner

MARCH 7, 2019

I use the “built in” benchmark pgbench to run a simple set of queries. Then reboot the kernel I used these excellent resources How to modify the kernel command line How to enable hugepages and this great video on Linux virtual memory. For this experiment I am using Postgres v11 on Linux 3.10

Performance 40

Performance Benchmarking C++ Virtualization 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. I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. Much of my testing was on Linux 4.14.11

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. perf special.

Best Practices 40

Best Practices Scalability Performance C++ 40

Smashing Magazine

JUNE 3, 2022

And today, we still have type in a digital context, but it travels through cables, wirelessly on smartphones, and in virtual reality glasses in 3D. Stay tuned! Later on, in the 1980s, type started to be used in a digital context in computers. There are many different classifications of typefaces. Further Reading on Smashing Magazine.

Performance 113

Performance Design Best Practices Testing 113

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

SQL Server According to Bob

JANUARY 11, 2020

For specific information on I/O tuning and balancing, you will find more details in the following document. The BPool consumes the majority of the user mode address space leaving only a few 100 MB of the virtual address range free for thread stacks, DLLs, and other activities.

Servers 40

Servers Cache Media Hardware 40

SQL Server According to Bob

JANUARY 11, 2020

​​ However, the ​​ algorithm ​​ has been ​​ tuned ​​ and the resulting ​​ affect ​​ is ​​ minimal. ​​ The following table outlines the virtual protection states.

Servers 40

Servers Cache Database Media 40