Desupport of monitoring for legacy 32-bit operating systems

Dynatrace

We’re continuously working to support the most popular operating systems with high quality OneAgent deployment options. Of course, it’s possible to run a legacy 32-bit application on a 64-bit operating system. Dynatrace news.

MySQL Memory Management, Memory Allocators, and Operating System

DZone

performance mysql memory operating system bug memory management memory allocatorsWhen users experience memory usage issues with any software, including MySQL, their first response is to think that it’s a symptom of a memory leak. As this story will show, this is not always the case. This story is about a bug.

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How to Kill Processes in Unix/Linux

DZone

There are different options to terminate a process in Unix/Linux flavor of operating systems. java open source devops command line operating systems linux operating system linux tools/utilities system admin unix operating system unix osThis article intends to list and provide examples of each option. You can use the kill command to terminate a process by passing the process id.

I/O Waiting CPU Time – ‘wa’ in Top

DZone

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. Waiting CPU time indicates the amount of time the CPU spends waiting for disk I/O or network I/O operations to complete.

Different CPU Times: Unix/Linux ‘top’

DZone

CPU consumption in Unix/Linux operating systems is studied using eight 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, Stolen CPU time. User CPU Time and System CPU Time. In order to understand ‘user’ CPU Time, one should understand ‘system’ CPU time as well, since they go hand in hand. This will be accounted as ‘system’ CPU time.

Back-to-Basics Weekend Reading - Virtualizing Operating Systems.

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Back-to-Basics Weekend Reading - Virtualizing Operating Systems. This weekends back-to-basics reading is on operating system virtualization. There are two papers that deserve the "classic" tag as they both form the basis for operating system virtualization that is in production today. All Things Distributed.

Ginseng: keeping secrets in registers when you distrust the operating system

The Morning Paper

Ginseng: keeping secrets in registers when you distrust the operating system Yun & Zhong et al., Suppose you did go to the extreme length of establishing an unconditional root of trust for your system, even then, unless every subsequent piece of code you load is also fully trusted (e.g., In doing so, the app assumes that the operating system (OS) is trustworthy.

Software Interrupt Time – ‘si’ Time in top

DZone

CPU consumption in Unix/Linux operating systems is studied using eight 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 , Stolen CPU time. Software interrupts can be triggered because of the following events: tutorial unix-linux performance cpu operating system root cause analysis unix operating system linux os cpu memory usage cpu optimization

Everything you ever wanted to know about Dynatrace OS support policies

Dynatrace

Do you keep an eye on the support of distributions and versions of operating systems within your environment? With this information, you can find answers to questions such as: Which operating systems and versions does Dynatrace support? Dynatrace news.

nice CPU Time – ‘ni’ Time in top

DZone

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 Unix/Linux operating systems, processes are launched with a priority 0 (default).

Firecracker: lightweight virtualization for serverless applications

The Morning Paper

Uncategorized Containers Operating SystemsFirecracker: lightweight virtualisation for serverless applications , Agache et al., NSDI’20. Finally the NSDI’20 papers have opened up to the public (as of last week), and what a great looking crop of papers it is.

A persistent problem: managing pointers in NVM

The Morning Paper

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. This means that the overheads of system calls become much more noticeable. " Uncategorized Hardware Operating Systems

Software-defined far memory in warehouse scale computers

The Morning Paper

” This paper describes a “far memory” system that has been in production deployment at Google since 2016. With a far memory tier in place operators can choose between packing more jobs onto each machine, or reducing the DRAM capacity, both of which lead to TCO reductions. The key to an efficient system is the identification of cold pages: the cold age threshold determines how many seconds we can go without a page being accessed before it is declared cold.

A tale of two abstractions: the case for object space

The Morning Paper

The global object space contains all objects (potentially across multiple systems), allowing persistent pointers to refer to data with long lifetimes and giving software the ability to operate directly on persistent structures. Uncategorized Operating Systems

CheriABI: enforcing valid pointer provenance and minimizing pointer privilege in the POSIX C run-time environment

The Morning Paper

abstract capabilities are constructed only through legitimate provenance chains of operations, successively reducing permissions from initial maximally permissive capabilities provided at machine reset. And this all has to work for whole-system executions, not just the C-language portion of user processes. The MIPS rows show the test suite results on a standard mips64 system. faster for system calls). Uncategorized Operating Systems Security

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Compress objects, not cache lines: an object-based compressed memory hierarchy

The Morning Paper

Uncategorized Hardware Operating SystemsCompress objects, not cache lines: an object-based compressed memory hierarchy Tsai & Sanchez, ASPLOS’19. Last time out we saw how Google have been able to save millions of dollars though memory compression enabled via zswap. One of the important attributes of their design was easy and rapid deployment across an existing fleet.

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PostgreSQL vs. Oracle: Difference in Costs, Ease of Use & Functionality

Scalegrid

Oracle Database is a commercial, proprietary multi-model database management system produced by Oracle Corporation, and the largest relational database management system (RDBMS) in the world. Supported Operating Systems.

A case for lease-based, utilitarian resource management on mobile devices

The Morning Paper

LeaseOS borrows the concept of a lease from distributed systems, but with a rather nice twist, and is able to reduce power wastage by 92% with no disruption to application experience and no changes required to the apps themselves. Android’s Doze mode defers app background CPU and network activity when the device is unused for a long time, but is very conservative in when it triggers as it is a system-wide mode. Uncategorized mobile Operating Systems

Time protection: the missing OS abstraction

The Morning Paper

Just as today’s systems offer memory protection, they call this time protection. The paper focuses on two key use cases: A confined component running in its own security domain, connected to the rest of the system by explicit (e.g. “ To avoid the interconnect channel, we have to assume the system either runs on a single core (at least while the sensitive code is executing), or co-schedules domains across the core, such that at any time only one domain executes.

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Back-to-Basics Weekend Reading - Using continuations to.

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Back-to-Basics Weekend Reading - Using continuations to implement thread management and communication in operating systems. During the nineties much operating systems research focussed on microkernels , which resulted in a large collection of prototype systems: Mach 3.0, Dean, Proceedings of the thirteenth ACM symposium on Operating systems principles Pages 122-136.

AWS Elastic Beanstalk: A Quick and Simple Way into the Cloud - All.

All Things Distributed

Werner Vogels weblog on building scalable and robust distributed systems. Flexibility is one of the key principles of Amazon Web Services - developers can select any programming language and software package, any operating system, any middleware and any database to build systems and applications that meet their requirements. All Things Distributed. AWS Elastic Beanstalk: A Quick and Simple Way into the Cloud. By Werner Vogels on 18 January 2011 04:00 PM. Permalink.

OneAgent release notes version 1.205

Dynatrace

Current Operating systems support changes. The following operating systems will no longer be supported starting 01 December 2020. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 January 2021. The following operating systems will no longer be supported starting 01 February 2021. The following operating systems will no longer be supported starting 01 May 2021.

OneAgent release notes version 1.201

Dynatrace

Operating systems. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 November 2020. The following operating systems will no longer be supported starting 01 December 2020. The following operating systems will no longer be supported starting 01 January 2021. The following operating systems will no longer be supported starting 01 February 2021.

OneAgent release notes version 1.213

Dynatrace

DISABLE_SYSTEM_LOGS_ACCESS. --set-system-logs-access-enabled. set-system-logs-access-enabled. Current Dynatrace OneAgent operating systems support changes. The following operating systems will no longer be supported starting 01 May 2021. Future Dynatrace OneAgent operating systems support changes. The following operating systems will no longer be supported starting 01 June 2021. Dynatrace news. Rollout starts 8 April 2021.

OneAgent release notes version 1.211

Dynatrace

Added system performance metrics and JVM metrics to the Z Java code module. Operating systems. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 May 2021. The following operating systems will no longer be supported starting 01 June 2021. The following operating systems will no longer be supported starting 01 July 2021. Dynatrace news.

Building full-text indexes using the Sphinx search engine

SQL Shack

In the previously published article, Getting started with Sphinx search engine, we talked about the Sphinx search engine and how to install it on the Windows operating system.

OneAgent release notes version 1.189

Dynatrace

Operating systems. Current Operating systems support changes. The following operating systems will no longer be supported starting 01 May 2020. Dynatrace news. New features and enhancements. Easily change OneAgent metadata, host name, and monitoring mode. Added support for Spring AMQP 2.2. Added support for Go 1.14 for Linux, Alpine Linux 64-bit (x86), Windows (x86). Added support for EulerOS 2.3, Current support changes.

9 Free Best Code Editors for Windows and Mac In 2020

DZone

However, we will lay extra emphasis on Windows OS and Mac OS because they are popular operating systems out there right now. It is always exciting for developers from all over the world whenever they get to showcase their best code editor at computer expos and tech conferences.

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OneAgent release notes version 1.203

Dynatrace

Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 December 2020. The following operating systems will no longer be supported starting 01 January 2021. The following operating systems will no longer be supported starting 01 February 2021. The following operating systems will no longer be supported starting 01 May 2021. Dynatrace news.

Getting started with Sphinx search engine

SQL Shack

In this article, we will be talking about the Sphinx search engine and how to use it to install it on the Windows operating system.

Top 7 Cross Browser Testing Tools in 2021

DZone

Cross Browser Testing scrutinizes the compatibility of a website or web apps on varied operating systems, devices, and browsers. In today’s fast-paced market, web apps run on several browsers (Edge, Firefox, Google Chrome, Safari, etc.) on varied desktop or mobile devices with particular screen settings. This is the reason why we need to execute cross-browser tests.

OneAgent release notes version 1.195

Dynatrace

Operating systems. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 August 2020. The following operating systems will no longer be supported starting 01 November 2020. The following operating systems will no longer be supported starting 01 December 2020. The following operating systems will no longer be supported starting 01 January 2021.

7 Steps to Optimize the Cost of Software Testing

DZone

An average mobile app contains about 50,000 lines of code, Microsoft Windows operating system has about 50 million lines of code, while Google’s entire code base is estimated to contain 2 billion lines of code. Why Software Testing Is Important. If you take an average of 15–50 defects per KLOC (Kilo Lines of Code), that adds up to a lot of work for software testers before a product is released into the market. So how does the software tester decide what to test? How to test?

Reasons Why Startups Must Invest in Cross-Browser Testing

DZone

Cross-browser testing is testing your website or web application in different browsers or browser versions or devices and operating systems to make sure that the web app or website works perfectly in all of them. Hassle in a startup is not a new thing. Most startups struggle to grow.

OneAgent release notes, version 1.185

Dynatrace

Operating systems. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 April 2020. The following operating systems will no longer be supported starting 01 May 2020. The following operating systems will no longer be supported starting 01 June 2020. The following operating systems will no longer be supported starting 01 July 2020. Dynatrace news.

OneAgent release notes version 1.209

Dynatrace

DISABLE_SYSTEM_LOGS_ACCESS. --set-system-logs-access-enabled. set-system-logs-access-enabled. Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 April 2020. The following operating systems will no longer be supported starting 01 May 2020. The following operating systems will no longer be supported starting 01 June 2020. Dynatrace news.

Fast, Efficient, and Effective Cross Browser Testing

DZone

Developers likely develop on only one browser – and maybe only one operating system. What do you think about cross-browser testing ? How does an app maker ensure that defects on other browsers will not affect their user base? In theory, cross-browser testing can help companies catch product defects before products get released to customers.

OneAgent release notes version 1.191

Dynatrace

Operating systems. Dynatrace news. Added support for Akka Remoting 2.3, Added support for Cassandra (CQL3) – cassandra-driver-core 4.0.0-4.5.0. Added support for CentOS 7.x, AArch64). Added support for SUSE Enterprise Linux 15.x AArch64). Added support for Ubuntu 20.04 LTS (AArch64, PPCLE, s390x, x86). Added support for Ubuntu 18.04 LTS (AArch64). Added support for EulerOS 2.8 AArch64). The post OneAgent release notes version 1.191 appeared first on Dynatrace blog.

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How to Overcome 6 Selenium Automation Testing Challenges

DZone

When using Selenium, we can create automated test cases on any operating system and browser on desktop, however, we cannot perform mobile tests with Selenium simultaneously.

Mobile 203

SQL Server Always On Availability Groups for SQL Server Linux instances

SQL Shack

Introduction SQL Server 2017 & 2019 works on the cross-platform operating system: Windows and Linux. In this 29th article of the SQL Server Always On Availability Groups series, we configure the AG between SQL Server Linux instances.

PyTest Tutorial — Parallel Testing With Selenium Grid

DZone

Selenium test automation is really helpful in testing websites or web apps on different combinations of browsers, operating systems, and devices. Selenium is one of the widely used test automation frameworks for automated browser testing.

Desired Capabilities in Selenium Testing With Examples

DZone

Desired Capabilities is a class used to declare a set of basic requirements such as combinations of browsers, operating systems, browser versions, etc. Get the right outcomes from Selenium testing. You may also like: Discover the Top Tips and Tricks of the Selenium WebDriver. to perform automated cross-browser testing of a web application.

Using Telegraf on Windows

DZone

Telegraf is an agent that runs on your operating system of choice, schedules gathering metrics and events from various sources and then sends them to one or more sinks, such as InfluxDB or Kafka. Learn how to use Telegraf on Windows.