Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI.

Speed 40

Speed Java AWS Virtualization 40

Dynatrace

JANUARY 15, 2020

Having released this functionality in an Preview Release back in September 2019, we’re now happy to announce the General Availability of our Citrix monitoring extension. Dynatrace is naturally suited to address these requirements with its automatic and AI-powered full-stack software intelligence platform. Dynatrace news. Citrix VDA.

Latency 36

Latency Performance Virtualization Infrastructure 36

The Morning Paper

DECEMBER 10, 2019

HotStorage 2019. This is a companion paper to the " persistent problem " piece that we looked at earlier this week, going a little deeper into the object pointer representation choices and the mapping of a virtual object space into physical address spaces. Virtualization exceptions act as the equivalent of page faults.

Hardware 52

Hardware Virtualization Operating System Programming 52

Enprowess

SEPTEMBER 7, 2021

According to the latest Stackoverflow developer survey , JavaScript is a well-liked technology used by software developers. Software Developers got to use JavaScript CLI tools to create the back-end part of web applications or server-side. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers.

Open Source 52

Open Source Virtualization Programming Servers 52

HammerDB

OCTOBER 18, 2019

rc3-custom #1 SMP Mon Aug 12 14:07:33 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Welcome to Ubuntu 19.04 (GNU/Linux 5.3.0-rc3-custom So lets take an Ubuntu system with Platinum 8280 CPUs with the following Ubuntu OS, reboot and check the CPU configuration before running any tests. uname -a Linux ubuntu19 5.3.0-rc3-custom rc3-custom x86_64).

Benchmarking 63

Benchmarking Performance Hardware C++ 63

HammerDB

OCTOBER 12, 2018

CPUs which need to have their frequency coordinated by software: 0 . maximum transition latency: Cannot determine or is not supported. . Error in Virtual User 1: mysqlexec/db server: Table 'mysql.proc' doesn't exist. Vuser 1:56 Active Virtual Users configured. /cpupower frequency-info analyzing CPU 0: .

Best Practices 40

Best Practices Scalability Performance C++ 40

Smashing Magazine

JANUARY 11, 2021

Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms. Designed for the modern web, it responds to actual congestion, rather than packet loss like TCP does, it is significantly faster , with higher throughput and lower latency — and the algorithm works differently.

Performance 145

Performance Cache Media Metrics 145