Brendan Gregg

MAY 1, 2022

My dream is to turn computer performance analysis into a science, one where we can completely understand the performance of everything: of applications, libraries, kernels, hypervisors, firmware, and hardware. It's a critical time to join, and an honour to do so as an Intel fellow, based in Australia.

Wireless 145

Wireless Hardware Open Source AWS 145

DZone

FEBRUARY 21, 2021

CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time , System CPU time , nice CPU time , Idle CPU time , Waiting CPU time , Hardware Interrupt CPU time , Software Interrupt CPU time , and Stolen CPU time. In this article, let's study ‘nice CPU time’. What Is ‘nice’ CPU Time?

Operating System 133

Operating System Hardware Metrics Systems 133

Dynatrace

NOVEMBER 15, 2021

Log monitoring, log analysis, and log analytics are more important than ever as organizations adopt more cloud-native technologies, containers, and microservices-based architectures. A log is a detailed, timestamped record of an event generated by an operating system, computing environment, application, server, or network device.

Analytics 202

Analytics Monitoring Artificial Intelligence DevOps 202

Scalegrid

DECEMBER 21, 2023

This ensures each Redis® instance optimally uses the in-memory data store and aligns with the operating system’s efficiency. This Command Line Interface (CLI) can be used for basic activity metrics and offers powerful real-time data analysis tools, giving you more control over the performance of your servers.

Strategy 130

Strategy Monitoring Latency DevOps 130

DZone

JANUARY 16, 2021

CPU consumption in Unix/Linux operating systems is broken down into 8 different metrics: User CPU time , System CPU time , nice CPU time , Idle CPU time , Waiting CPU time , Hardware Interrupt CPU time , Software Interrupt CPU time , and Stolen CPU time. In this article, let us study ‘waiting CPU time’.

Operating System 124

Operating System Hardware Network Metrics 124

Dynatrace

JUNE 25, 2020

Our Premium High Availability comes with the following features: Active-active deployment model for optimum hardware utilization. Save on costs for hardware and network bandwidth to optimize total cost of ownership. A similar analysis can be performed on your GRO. A similar analysis can be performed on your GRO.

Availability 241

Availability Hardware Latency Traffic 241

Scalegrid

FEBRUARY 8, 2024

Key Takeaways Distributed storage systems benefit organizations by enhancing data availability, fault tolerance, and system scalability, leading to cost savings from reduced hardware needs, energy consumption, and personnel. In extensive large-scale data assessments, leveraging such technologies is common practice.

Storage 130

Storage Systems Big Data Azure 130

Scalegrid

JANUARY 25, 2024

These can help you ensure your system’s health and quickly perform root cause analysis of any performance-related issue you might be encountering. It’s important to note that recommended throughput levels may vary depending on factors such as operating system type, network bandwidth availability, and hardware quality.

Metrics 130

Metrics Monitoring Latency Cache 130

Dynatrace

JUNE 15, 2023

If your application runs on servers you manage, either on-premises or on a private cloud, you’re responsible for securing the application as well as the operating system, network infrastructure, and physical hardware. What are some key characteristics of securing cloud applications?

Cloud 171

Cloud Open Source Architecture Monitoring 171

Testlodge

NOVEMBER 12, 2021

For medium to large scale applications, compatible with all commonly available operating systems and internet browsers is essential. Hardware Compatibility Testing: In this scenario, an application is tested against various hardware configurations to check behavior. Cross-Browser Testing Tools.

Testing 78

Testing Hardware Operating System Mobile 78

Dynatrace

APRIL 5, 2021

You will likely need to write code to integrate systems and handle complex tasks or incoming network requests. As a bonus, operations staff never needs to update operating systems or hardware, because AWS manages servers with no stoppage of application functionality. How does AWS Lambda work?

Lambda 175

Lambda AWS Serverless Hardware 175

Scalegrid

JULY 13, 2020

Compare ease of use across compatibility, extensions, tuning, operating systems, languages and support providers. PostgreSQL is an open source object-relational database system with over 30 years of active development. Supported Operating Systems. Compare Ease of Use. SolarisUnix. Supported Languages.

Open Source 244

Open Source Tuning C++ Database 244

Dynatrace

SEPTEMBER 29, 2021

Think of containers as the packaging for microservices that separate the content from its environment – the underlying operating system and infrastructure. Anomaly detection and precise root-cause-analysis for fast remediation. Kubernetes/Swarm platform operators need: Real-time data on the health of pods, nodes, and clusters.

Open Source 294

Open Source Traffic DevOps Cloud 294

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., In this paper we explore the implications microservices have across the cloud system stack. Hardware implications. Operating system and network implications. ASPLOS’19.

Open Source 61

Open Source Hardware Benchmarking Systems 61

Dynatrace

NOVEMBER 22, 2022

An always-on infrastructure provides the foundation for system availability that can deliver five-nines availability. Traditionally, teams achieve this high level of uptime using a combination of high-capacity hardware, system redundancy, and failover models. Apply AI for real-time root-cause analysis.

Infrastructure 176

Infrastructure Availability Systems Retail 176

Dynatrace

NOVEMBER 29, 2022

The purpose of infrastructure as code is to enable developers or operations teams to automatically manage, monitor, and provision resources, rather than manually configure discrete hardware devices and operating systems. Infrastructure as code is sometimes referred to as programmable or software-defined infrastructure.

Infrastructure 167

Infrastructure Code Cloud DevOps 167

Brendan Gregg

MAY 1, 2022

My dream is to turn computer performance analysis into a science, one where we can completely understand the performance of everything: of applications, libraries, kernels, hypervisors, firmware, and hardware. It's a critical time to join, and an honour to do so as an Intel fellow, based in Australia.

Wireless 52

Wireless Hardware Open Source Cloud 52

The Netflix TechBlog

JUNE 4, 2019

We were able to meaningfully improve both the predictability and performance of these containers by taking some of the CPU isolation responsibility away from the operating system and moving towards a data driven solution involving combinatorial optimization and machine learning.

Cache 251

Cache Latency Airlines Logistics 251

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? Let us have a look at the most popular types of mobile testing for applications and hardware.

Mobile 82

Mobile Testing Hardware C++ 82

Randon ASCII

OCTOBER 4, 2020

First, a bit of operating-system design context. Ideally the CPU goes to sleep when Sleep(1) is called, in order to save power, so how does the operating system (OS) wake your thread if the CPU is sleeping? The answer is hardware interrupts. Timer interrupts and their raison d’être.

Programming 145

Programming Games Hardware Operating System 145

SQL Performance

DECEMBER 17, 2019

This removes the burden of purchasing and maintaining your hardware, storage and networking infrastructure, while still giving you a very familiar experience with Windows and SQL Server itself. You will still have to maintain your operating system, SQL Server and databases just like you would in an on-premises scenario.

Azure 72

Azure Virtualization Servers Storage 72

Dotcom-Montior

JUNE 15, 2020

The censorship and monitoring of internet have evolved from anti-virus-like and firewall software to hardware security patches for all devices that uses internet. Operating System Updates and Security Patches. All foreign websites hosted outside China undergoe screening and analysis for blacklisting and whitelisting.

Monitoring 52

Monitoring Performance Artificial Intelligence Internet 52

Percona

JUNE 20, 2023

By doing some further analysis, it came to light that it creates issues with LEFT JOIN only. The following are possible causes for segmentation fault: Operating system issues Buggy OS kernel Faulty hardware(specifically memory) Bug in a product (e.g., In the case of an equi-join, it works as expected.

Programming 83

Programming C++ Database Virtualization 83

O'Reilly Software

APRIL 4, 2018

Those were the days when “connected” meant having some web presence, “interactions” were measured in number of clicks, and the analysis happened in batch overnight processes. The data shape will dictate capacity planning, tuning of the backbone, and scalability analysis for individual components. At least once? At most once?

Architecture 80

Architecture Scalability Google Operating System 80

The Morning Paper

MAY 21, 2019

Using zswap means that no new hardware solutions are required, enabling rapid deployment across clusters. The system also collects per-job cold-page histograms for a given set of predefined cold age thresholds. These are used to perform offline analysis for potential memory savings under different cold-age thresholds.

Software 78

Software Software Google Hardware 78

Dotcom-Montior

NOVEMBER 27, 2018

Additionally, end users can access your site or applications from anywhere in the world using different browsers, operating systems, and mobile devices, all with varying connection speeds. You can also export all HTTP related data in CSV format for analysis using any tool you choose.

Performance Testing 40

Performance Testing Strategy Testing Performance 40

Adrian Cockcroft

JUNE 21, 2022

I became the Sun UK local specialist in performance and hardware, and as Sun transitioned from a desktop workstation company to sell high end multiprocessor servers I was helping customers find and fix scalability problems. We had specializations in hardware, operating systems, databases, graphics, etc.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Dynatrace

NOVEMBER 20, 2019

The IBM Z platform is a range of mainframe hardware solutions that are quite frequently used in large computing shops. Typically, these shops run the z/OS operating system, but more recently, it’s not uncommon to see the Z hardware running special versions of Linux distributions.

Availability 30

Availability Hardware Java Tuning 30

Adrian Cockcroft

NOVEMBER 11, 2019

A learning organization, disaster recovery testing, game days, and chaos engineering tools are all important components of a continuously resilient system. This discussion focuses on hardware, software and operational failure modes. Book: Engineering a Safer World by Nancy G. that are used across multiple applications.

Latency 52

Latency Engineering Systems Hardware 52

Testsigma

FEBRUARY 6, 2020

Boundary Value Analysis Equivalence Partitioning Decision Table Exploratory Testing Error guessing. User Acceptance Testing- It is the last level of testing in a V-Model, parallel to the requirement analysis phase. The Software Program is considered as a black box, and the user is not interested in the internal structure of the box.

Software 69

Software Software Testing Scalability 69

Dynatrace

AUGUST 8, 2019

The IBM Z platform is a range of mainframe hardware solutions that are quite frequently used in large computing shops. Typically, these shops run the z/OS operating system, but more recently, it’s not uncommon to see the Z hardware running special versions of Linux distributions.

Availability 25

Availability Hardware Java Tuning 25

Adrian Cockcroft

NOVEMBER 11, 2019

A learning organization, disaster recovery testing, game days, and chaos engineering tools are all important components of a continuously resilient system. This discussion focuses on hardware, software and operational failure modes. Book: Engineering a Safer World by Nancy G. that are used across multiple applications.

Latency 53

Latency Engineering Systems Hardware 53

Nick Desaulniers

APRIL 6, 2020

halt (); Some sort of very early exception handler; better to sit busy in an infinite loop than run off and destroy hardware or corrupt data, I suppose. Jann Horn gets back to me first: Can you use QEMU to look at the hardware frame (which contains values pushed by the hardware in response to the page fault) in early_idt_handler_common?

C++ 67

C++ Hardware Code Virtualization 67

Brendan Gregg

AUGUST 8, 2017

Nowadays, the source code to old operating systems can also be found online. For everyone familiar with other operating systems and their CPU load averages, including this state is at first deeply confusing. **Why?** Here's an example: on an idle 8 CPU system, I launched tar to archive some uncached files.

Latency 111

Latency Metrics C++ Systems 111

ACM Sigarch

NOVEMBER 1, 2019

This blog post gives a glimpse of the computer systems research papers presented at the USENIX Annual Technical Conference (ATC) 2019, with an emphasis on systems that use new hardware architectures. USENIX ATC is a top-tier venue with a broad range of systems research papers from both industry and academia.

Architecture 12

Architecture Hardware Cache Storage 12

SQL Server According to Bob

JULY 13, 2016

desktop machine (I won’t tell you the hardware details. Over the years this product has grown into a complete data platform including Reporting Services, Analysis Services, Integration Services, more tools, Replication, R Services, and much more. So I proceeded to install SQL Server 4.20 on my Windows NT 3.1 It would scare you).

Servers 40

Servers Media Engineering Virtualization 40

O'Reilly

JULY 15, 2020

Combined, technology verticals—software, computers/hardware, and telecommunications—account for about 35% of the audience (Figure 2). Microservices Adoption: Explication and Analysis. Respondents work in more than 25 different vertical industries.The single largest cluster consists of respondents (26%) from the software industry.

Database 135

Database Architecture Education Systems 135