Percona

AUGUST 22, 2023

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. Without enough infrastructure (physical or virtualized servers, networking, etc.), there cannot be high availability.

Availability 78

Availability Hardware Open Source Database 78

Percona

JUNE 22, 2023

Defining high availability In general terms, high availability refers to the continuous operation of a system with little to no interruption to end users in the event of hardware or software failures, power outages, or other disruptions. Without enough infrastructure (physical or virtualized servers, networking, etc.),

Availability 105

Availability Database Open Source Hardware 105

Brendan Gregg

MARCH 16, 2024

To explain this example in more detail: The profiler periodically interrupts software execution, and for those disconnected stacks it happens to be the execution of the kernel software ("vfs*", "ext*", etc.). Apart from library code, maybe your application doesn't have frame pointers either, in which case everything is broken.

Java 145

Java Cache Google Hardware 145

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

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 126

Speed Java AWS Virtualization 126

HammerDB

JUNE 27, 2022

HammerDB is a software application for database benchmarking. It enables the user to measure database performance and make comparative judgements about database hardware and software. Databases are highly sophisticated software, and to design and run a fair benchmark workload is a complex undertaking. The HammerDB name.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

The Morning Paper

MAY 27, 2019

Last week we saw the benefits of rethinking memory and pointer models at the hardware level when it came to object storage and compression ( Zippads ). The protections are hardware implemented and cannot be forged in software. code is not given access to excessive capabilities. We answer this question affirmatively.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Percona

JUNE 20, 2023

In order to overcome these issues, the concept of paging and segmentation was introduced, where physical address space and virtual address space were designed. Here, memory is divided into equal sizes of partitions where the code of a program resides. A detailed description of these concepts is below.

Programming 82

Programming C++ Database Virtualization 82

Percona

JULY 7, 2023

Unfortunately, using certain open source database software as part of an HA architecture can present significant challenges. Despite all its upside, PostgreSQL software presents such challenges. HA in PostgreSQL databases delivers virtually continuous availability, fault tolerance, and disaster recovery.

Availability 83

Availability Open Source Architecture Database 83

The Morning Paper

APRIL 2, 2019

Establishing software root of trust unconditionally Gligor & Woo, NDSS’19. Root of trust (RoT) establishment on an untrusted system ensures that a system state comprises all and only content chosen by the user, and the user’s code begins execution in that state. malware) or executing arbitrary code in the system.

Software 40

Software Software Programming Hardware 40

HammerDB

OCTOBER 23, 2023

Also, note in passing that we include a COMMIT statement in this procedure because one is included in the example code in TPC-C specification. The data shows a scripted automated workload running a number of back to back tests each time with an increasing number of virtual users. On MySQL, we saw a 1.5X performance advantage.

Benchmarking 62

Benchmarking Database Network C++ 62

Dotcom-Montior

NOVEMBER 24, 2021

These systems can include physical servers, containers, virtual machines, or even a device, or node, that connects and communicates with the network. A three-tier system is a software application architecture that consists of a presentation layer, application layer, and data, or core, layer. Blockchain is a good example of this.

Systems 74

Systems Monitoring Hardware Network 74

ACM Sigarch

APRIL 26, 2018

They introduced the architecture of coarse grain reconfigurable array (CGRA) for statically scheduled data flow computing in HOTCHIPS’17 and its software stack of compiler and linker in ICCAD’17. HPU: Holographic Processing Unit (HPU) is the specific hardware of Microsoft’s Hololens. FPU: Floating Processing Unit (FPU).

Hardware 99

Hardware Artificial Intelligence Architecture Google 99

The Agile Manager

JUNE 30, 2015

Is every company destined to be a software company? Virtual data centers, real-time algorithmic pricing, and new media are simply larger versions of that same phenomenon. No software, no chance. So producers have to become software companies. It might consume a lot of software. But what does that mean exactly?

Software 40

Software Software Innovation Hardware 40

HammerDB

FEBRUARY 25, 2021

This post explains why HammerDB made the language decisions it made to make it the best performing and most usable database benchmarking software. To benchmark a database we introduce the concept of a Virtual User. So having an application client mutex lock that artificially stalls our Virtual Users does not sound good.

Programming 67

Programming Benchmarking Virtualization C++ 67

The Morning Paper

DECEMBER 8, 2019

Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. Traditional pointers address a memory location (often virtual of course). At least, the nature of pointers that we want to make persistent.

Hardware 56

Hardware Programming Media Storage 56

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

HammerDB

APRIL 19, 2023

Among the different components of modern software solutions, the database is one of the most critical. Regardless of whether the computing platform to be evaluated is on-prem, containerized, virtualized, or in the cloud, it is crucial to consider several essential factors. and 8.0.32 HammerDB 4.5 Concurrency at 80 VU’s 1.00

Performance 54

Performance Benchmarking Cache Storage 54

Smashing Magazine

OCTOBER 27, 2021

Nowadays, hardware and software are designed to conduct eye-tracking studies for marketing , UX , psychological and medical research , gaming , and several other use cases. Another area that has been showing huge potential is eye-tracking in the context of virtual reality. Source: Nielsen Norman Group ) ( Large preview ).

Mobile 114

Mobile Website Hardware Social Media 114

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 52

Speed Java AWS Virtualization 52

KeyCDN

JANUARY 23, 2020

These acronyms, which stand for real user monitoring and application performance monitoring, are software monitoring processes essential to measuring and evaluating applications in many different areas. This helps developers decide when to increase server disk space and power or whether or not using a virtual cloud server is optimal.

Strategy 72

Strategy Metrics Monitoring Servers 72

The Morning Paper

APRIL 14, 2019

The paper sets out what we can do in software given today’s hardware, and along the way also highlights areas where cooperation from hardware will be needed in the future. The code and data of the kernel itself can also be used as a timing channel. Microarchitectural channels. Threat scenarios.

Hardware 44

Hardware Cache Latency Speed 44

HammerDB

NOVEMBER 22, 2021

The example shows a TPROC-C workload running with 4 Active Virtual Users. The events are colour coded and indexed in the graph to the wait event groups. For full performance details, grab the Metrics tab and pull it out of the HammerDB window to expand. Drag out Metrics tab. Workload running. Metrics view for benchmark.

Metrics 62

Metrics Benchmarking C++ Database 62

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

Particular Software

MARCH 11, 2019

The point is: our businesses can adapt to out-of-order delivery of information so our software should be able to as well. Exceptions What happens when programming exceptions occur in message processing code? Even with the most robust code possible, exceptions can still happen. For simplicity of the code we'll use two flags.

Virtualization 69

Virtualization Scalability Servers Processing 69

The Morning Paper

FEBRUARY 18, 2020

The key insight this led to is that ML models are software , derived from data. ML learning systems combine the characteristics of software, e.g. the need for CI/CD pipelines, and of data, e.g. the need to track lineage. Many of the software engineering discipline and controls need to be brought over into an ML context.

Government 95

Government Software Engineering Storage Database 95

Brendan Gregg

AUGUST 18, 2019

bpftrace is a new open source tracer for Linux for analyzing production performance problems and troubleshooting software. It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. software Kernel software-based events. profile Timed sampling across all CPUs.

Latency 68

Latency C++ Cache Programming 68

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. But I'm not completely sure.

Speed 40

Speed Java AWS Virtualization 40

Alex Russell

APRIL 29, 2021

After 20 years of neck-in-neck competition, often starting from common code lineages, there just isn't that much left to wring out of the system. Now in development in WebKit after years of radio silence, WebXR APIs provide Augmented Reality and Virtual Reality input and scene information to web applications. Compression Streams.

Media 145

Media Games Education Engineering 145

Adrian Cockcroft

NOVEMBER 13, 2023

In the simplest case, you have a growing workload, and you optimize it to run more efficiently so that you don’t need to buy or rent additional hardware, so your carbon footprint stays the same, but the carbon per transaction or operation is going down. I’ve written before about how to tune out retry storms.

Energy 52

Energy Cloud Traffic Transportation 52

HammerDB

OCTOBER 12, 2018

As is also the case this limitation is at the database level (especially the storage engine) rather than the hardware level. driver: intel_pstate CPUs which run at the same hardware frequency: 0 . CPUs which need to have their frequency coordinated by software: 0 . hardware limits: 1000 MHz - 3.80 Configure MySQL.

Best Practices 40

Best Practices Scalability Performance C++ 40

Brendan Gregg

SEPTEMBER 5, 2017

It uses a Solaris Porting Layer (SPL) to provide a Solaris-kernel interface on Linux, so that unmodified ZFS code can execute. There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). LTS (April 2016).

Virtualization 76

Virtualization AWS Engineering Hardware 76

ACM Sigarch

FEBRUARY 23, 2018

According to the article “ When Women Stopped Coding “, the percent of women in Computer Science 30 years ago was nearly twice what it is now. Virtualization, for instance, was being addressed by IBM in the 1960s. We believed existing hardware and OS protocols protected the processor.

Architecture 47

Architecture Cache Hardware Virtualization 47

SQL Server According to Bob

DECEMBER 18, 2018

Before all was said and done, all of these people and more helped with various activities: · Eugene, Mike, Slava, Scott, Peter, Steve and others doing code reviews on my SQL Server and Host Extension changes. · Red Hat, SUSE, HPE, Intel helping and confirming Linux behaviors and making file system code changes. product: Virtual Disk.

Servers 90

Servers Media Cache Storage 90

Abhishek Tiwari

JULY 12, 2018

Data Pipeline A data pipeline is a software that ingests data from multiple sources, transforms it and finally makes it available to internal or external products. A data pipeline is a software which runs on hardware. The software is error-prone and hardware failures are inevitable.

Latency 63

Latency Analytics Scalability Engineering 63

SQL Server According to Bob

JANUARY 11, 2020

Example 1: ​​ Hardware failure (CPU board) Battery backup on the caching controller maintained the data. Important Always consult with your hardware manufacturer for proper stable media strategies. Mirroring can be implemented at a software or hardware level.

Servers 40

Servers Cache Media Hardware 40

Brendan Gregg

AUGUST 8, 2017

Nowadays, the source code to old operating systems can also be found online. Linux is also hard coding the 1, 5, and 15 minute constants. This state is used by code paths that want to avoid interruptions by signals, which includes tasks blocked on disk I/O and some locks. This, too, was a dead end. They aren't idle.

Latency 111

Latency Metrics C++ Systems 111