Testlodge

APRIL 14, 2021

These systems are a combination of different hardware and software which have been configured to perform the desired task. Configuration testing is performed to discover the optimum combinations of software and hardware specifications that allow the system to work without flaws. Types of Configuration Testing.

Testing 89

Testing Hardware Virtualization Operating System 89

Percona

AUGUST 22, 2023

This blog article will examine shared attributes of high availability (HA) and fault tolerance (FT). Some of the most important elements include: No single point of failure (SPOF): You must eliminate any SPOF in the database environment, including any potential for an SPOF in physical or virtual hardware.

Availability 78

Availability Hardware Open Source Database 78

ACM Sigarch

OCTOBER 25, 2019

When it comes to hardware support to mitigate software security issues, there is a significant gap between what is available in products today and known solutions. Acceleration—Adding hardware support to reduce the runtime overheads of security features. hardware support for malware detection/prevention).

Hardware 98

Hardware Virtualization Architecture Games 98

Brendan Gregg

FEBRUARY 28, 2023

As I was determined to become great at my new occupation regardless of my location, I read every sysadmin book, article, and magazine I could find on the shelf. I didn't end up getting published in SysAdmin directly, but my performance work did make it as a feature article (thanks Matty). Or even on a plane.

Performance 110

Performance Latency Cache Virtualization 110

Brendan Gregg

SEPTEMBER 25, 2021

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. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). But I'm not completely sure.

Speed 126

Speed Java AWS Virtualization 126

ACM Sigarch

MAY 31, 2023

This article lays out the ideas and discussions shared at the workshop. There are three common mechanisms to access remote memory: modifying applications, modifying virtual memory, and hardware-level cache coherence support. About CXL hardware availability with academia. Using emulation (e.g. NUMA-based) can also work.

Latency 52

Latency Hardware Cache Architecture 52

Brendan Gregg

MARCH 16, 2024

It was also a virtual machine that lacked low-level hardware profiling capabilities, so I wasn't able to do cycle analysis to confirm that the 10% was entirely frame pointer-based. and we may have been flying close to the edge of hardware cache warmth, where adding a bit more instructions caused a big drop.

Java 145

Java Cache Google Hardware 145

ACM Sigarch

APRIL 26, 2018

EPU: Emotion Processing Unit is designed by Emoshape , as the MCU microchip design to enable a true emotional response in AI, robots and consumer electronic devices as a result of a virtually unlimited cognitive process. HPU: Holographic Processing Unit (HPU) is the specific hardware of Microsoft’s Hololens.

Hardware 99

Hardware Artificial Intelligence Architecture Google 99

Brendan Gregg

FEBRUARY 28, 2023

As I was determined to become great at my new occupation regardless of my location, I read every sysadmin book, article, and magazine I could find on the shelf. I didn't end up getting published in SysAdmin directly, but my performance work did make it as a feature article (thanks Matty). Or even on a plane.

Performance 52

Performance Latency Cache Virtualization 52

SQL Performance

APRIL 27, 2020

Fast forward a few years after Azure SQL Database was released to when Azure SQL Managed Instance was in public preview, and "vCores" (virtual cores) were announced for Azure SQL Database. Gen 5 is the primary hardware option now for most regions since Gen 4 is aging out. New Hardware Configuration for Provisioned Compute Tier.

Azure 55

Azure Database Serverless Hardware 55

Percona

JUNE 20, 2023

I tried to search for details related to segmentation fault on the internet and found many articles; however, it failed to quench my thirst as none of them had the answer I was looking for. Here, virtual(logical) to physical address translation is much easier as segment tables store adequate information.

Programming 82

Programming C++ Database Virtualization 82

Alex Podelko

SEPTEMBER 8, 2020

Otherwise we wouldn’t see so many commercial tools built on the top of open source including BlazeMeter (it is ironic that the article is posted on the BlazeMeter site), Flood, and OctoPerf. You do not need to trouble yourself with datasets, hardware, reporting or any of the usual pain points of JMeter, we’ll do it for you.

Open Source 223

Open Source Performance Testing Testing Performance 223

ACM Sigarch

FEBRUARY 23, 2018

The rest of the article presents some examples of this behavior and how it impacts our field, whether we care to admit it or not. However, what these articles miss is that historically this was not always the case. Virtualization, for instance, was being addressed by IBM in the 1960s. Present Bias.

Architecture 47

Architecture Cache Hardware Virtualization 47

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

Dotcom-Montior

DECEMBER 8, 2021

In a different article, we talked about chaos engineering and how SRE teams proactively seek out and test for failures to prevent the worst from happening. You cannot virtualize everything…yet. Software services still require physical devices and hardware for them to function. Asset Management.

Social Media 90

Social Media Monitoring Latency DevOps 90

O'Reilly

NOVEMBER 28, 2023

That pricing won’t be sustainable, particularly as hardware shortages drive up the cost of building infrastructure. These models are typically smaller (7 to 14 billion parameters) and easier to fine-tune, and they can run on very limited hardware; many can run on laptops, cell phones, or nanocomputers such as the Raspberry Pi.

Open Source 106

Open Source Artificial Intelligence Google Infrastructure 106

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

SEPTEMBER 25, 2021

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. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). But I'm not completely sure.

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

SEPTEMBER 25, 2021

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. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object).

Speed 52

Speed Java AWS Virtualization 52

SQL Server According to Bob

DECEMBER 18, 2018

Durability is a cornerstone of any database system and starting with SQL Server 2017 on Linux Cumulative Update 6 (CU6), SQL Server on Linux enables “Forced Flush” behavior as described in this article , improving durability on non-Fua optimized systems. “Be Linux may need similar utilities to control various hardware cache installations.

Servers 90

Servers Media Cache Storage 90

SQL Performance

JUNE 21, 2019

This article will expand on my previous article and point out how these apply to SQL Server , Azure SQL Database , and Azure SQL Managed Instance. If you are mostly virtualized on machines with 8 or fewer logical processors with a default MAXDOP, you're probably in OK. With modern hardware, the cost estimation of 5 is outdated.

Servers 49

Servers Azure Hardware Database 49

Smashing Magazine

SEPTEMBER 21, 2021

Note : The tools I advocate in this article work on Linux-based systems. You can use all the other tools described in this article with other Linux distributions, too. It’s very similar to the virtual desktops many Linux desktop managers have. You can also use them with macOS except for i3. But first, a bit of theory.

Development 99

Development Energy Programming Efficiency 99

Brendan Gregg

AUGUST 18, 2019

Originally posted at https:/opensource.com/article/19/8/introduction-bpftrace. bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set. hardware Hardware counter-based instrumentation. The currently supported types are (more will be added): Type Description.

Latency 68

Latency C++ Cache Programming 68

Abhishek Tiwari

DECEMBER 27, 2017

Containerized data workloads running on Kubernetes offer several advantages over traditional virtual machine/bare metal based data workloads including but not limited to. In this article, we covered several new developments required to productionize big data workloads on Kubernetes. better cluster resource utilization. Final thoughts.

Big Data 63

Big Data Storage Benchmarking Hardware 63

HammerDB

JANUARY 5, 2019

As the chart shows because we know that both HammerDB and the implementation of the TPC-C workload scales then we can determine that with this particular database engine both the software and hardware scales as well. If you only test your own application (and if you have more than one application which one will you use for benchmarking?)

Benchmarking 40

Benchmarking Database Social Media Scalability 40

SQL Server According to Bob

JANUARY 11, 2020

Important When planning, deploying, and maintaining a Microsoft SQL Server installation, ensure that the I/O system supports all the factors outlined in this article. Example 1: ​​ Hardware failure (CPU board) Battery backup on the caching controller maintained the data.

Servers 40

Servers Cache Media Hardware 40

Percona

APRIL 17, 2023

Operating System (OS) settings Swappiness Swappiness is a Linux kernel setting that influences the behavior of the Virtual Memory manager when it needs to allocate a swap, ranging from 0-100. The swap issue is explained in the excellent article by Jeremy Cole at the Swap Insanity and NUMA Architecture.

Best Practices 52

Best Practices Design Tuning Database 52

All Things Distributed

SEPTEMBER 4, 2017

This article titled " Wie Unternehmen vom Vormarsch des maschinellen Lernens profitieren können " appeared in German last week in the "Digitaliserung" column of Wirtschaftwoche. Both concepts are virtually omnipresent and at the top of most buzzword rankings.

Artificial Intelligence 147

Artificial Intelligence Transportation Education Airlines 147

Brendan Gregg

SEPTEMBER 5, 2017

I wrote an ftrace toolkit, [perf-tools], and the article [Ftrace: the hidden light switch]. - **perf**: since 2009, this started as a PMC profiler but can do tracing now as well, usually in a dump-and-post-process style. What happens if processes really do try to populate all that virtual memory? It's the official profiler.

Virtualization 76

Virtualization AWS Engineering Hardware 76

All Things Distributed

DECEMBER 20, 2017

This article titled " Daten müssen strategischer Teil des Geschäfts werden " appeared in German last week in the "IT und Datenproduktion" column of Wirtschaftwoche. That was the provocative thesis of a much-talked-about article from 2003 in the Harvard Business Review by the US publicist Nicolas Carr.

Artificial Intelligence 79

Artificial Intelligence Social Media Logistics AWS 79

Percona

AUGUST 27, 2018

Essentially, you can assign a thread to a specific virtual CPU. assigning to a specific CPU) is a manageable resource, represented by the concept of “virtual CPU” as a term that includes CPU cores, hyperthreads, hardware threads, and so forth. MySQL determines, at startup, how many virtual CPUs are available.

Tuning 44

Tuning Virtualization Testing Servers 44

Nick Desaulniers

MAY 30, 2016

Someone from the back shouts virtual machines then ducks as a chair is thrown. One important point the paper makes makes that’s easily missed is that typedef wasn’t added to C until 1977 when hardware manufactures still couldn’t agree on how many bits were in a char (CHAR_BITS) and some machines were using 24b addressing schemes.

C++ 59

C++ Programming Code Hardware 59

Smashing Magazine

JANUARY 11, 2021

It’s worth noting that you will end up with better Core Web Vitals scores by following a general advice in this article.). On the other hand, we have hardware constraints on memory and CPU due to JavaScript parsing and execution times (we’ll talk about them in detail later). Largest Contentful Paint ( LCP ) < 2.5 considerations.

Performance 145

Performance Cache Media Metrics 145

Brendan Gregg

AUGUST 8, 2017

For more on the equation and similar experiments, Dr. Neil Gunther has written an article on load averages: [How It Works], plus there are many Linux source block comments in [loadavg.c]. ## Linux Uninterruptible Tasks When load averages first appeared in Linux, they reflected CPU demand, as with other operating systems. Yes, I'd say so.

Latency 111

Latency Metrics C++ Systems 111

SQL Server According to Bob

JANUARY 11, 2020

ReadFile WriteFile ReadFileScatter WriteFileGather GetOverlappedResult ​​ For extended details on the 823 error, see ​​ Error message 823 may indicate hardware problems or system problems ​​ ( [link] i crosoft.com/default.aspx?scid=kb ​​ Contact your hardware manufacture for assistance.

Servers 40

Servers Cache Database Media 40