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. If a primary server fails, a backup server can take over and continue to serve requests.

Availability 107

Availability Database Open Source Hardware 107

Percona

JULY 7, 2023

Also, in general terms, a high availability PostgreSQL solution must cover four key areas: Infrastructure: This is the physical or virtual hardware database systems rely on to run. Can you afford the necessary hardware, software, and operational costs of maintaining a PostgreSQL HA solution? there cannot be high availability.

Availability 83

Availability Open Source Architecture Database 83

Percona

DECEMBER 14, 2022

In the database world there are essentially two types of database operations: Online Transaction Processing , OLTP : Online transaction processing applications have high throughput and are insert- or update-intensive in database management. And if the query processes 100 million rows, that’s definitely not trivial!

Database 92

Database Analytics Storage Processing 92

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

Percona

MAY 1, 2023

Key areas include: Configuration parameter tuning : This tuning involves altering variables such as memory allocation, disk I/O settings, and concurrent connections based on specific hardware and requirements. Throughput: The throughput of an application is directly influenced by the speed at which the database can process and serve queries.

Tuning 52

Tuning Efficiency Database Performance 52

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. At hardware reset the boot code is granted maximally permissive architectural capabilities.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Dotcom-Montior

MAY 12, 2020

Websites are now more than just the storage and retrieval of information to present content to users. They now allow users to interact more with the company in the form of online forms, shopping carts, Content Management Systems (CMS), online courses, etc. Hardware resources. Processing and generating the response.

Monitoring 63

Monitoring Entertainment Hardware Latency 63

The Morning Paper

JANUARY 30, 2020

The current system assumes an application specific regression model is available on the servers which can predict processing time given the current parameters of the job (e.g. These use their regression models to estimate processing time (which will depend on the hardware available, current load, etc.). in the cloud).

Mobile 104

Mobile Cloud Latency Games 104

The Morning Paper

MAY 28, 2019

The goal is to produce a low-energy hardware classifier for embedded applications doing local processing of sensor data. Of course analog signalling comes with a whole bunch of challenges of its own, which is one of the reasons we tend to convert to digital. One such possible representation is pure analog signalling.

Energy 52

Energy Hardware Efficiency Architecture 52

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Advances in browser content processing. Not as much as we'd like, of course, but the worldwide baseline has changed enormously. Hardware Past As Performance Prologue.

Performance 124

Performance Network Cache Metrics 124

The Morning Paper

MARCH 3, 2020

It takes you through the thinking processes and engineering practices behind the design of a key part of the control plane for AWS Elastic Block Storage (EBS): the Physalia database that stores configuration information. And, of course, it is designed to minimise the blast radius of any failures that do occur. NSDI’20.

Database 106

Database AWS Network Design 106

CSS Wizardry

APRIL 2, 2018

If you want to listen to the track—of course you do, it’s stunning—then you’ll have to make do with the YouTube version. It turns out that SongShift for iOS is the perfect tool to help with that process. Know anywhere I can get hold of a ‘dubious’ copy of this track? I’ll donate £25 to a charity of your choosing (DMs are open).

Website 108

Website Media Hardware Monitoring 108

Alex Russell

SEPTEMBER 20, 2020

Pre-publication gates were valuable when better answers weren't available, but commentators should update their priors to account for hardware and software progress of the past 13 years. The world didn't yet have pervasive multi-process browser sandboxing, JS JITs , or metal-speed binary isolation. Don't like the consequences?

Hardware 64

Hardware Mobile Programming Java 64

All Things Distributed

SEPTEMBER 6, 2013

Given that I am originally from the Netherlands I have, of course, a special interest in how Dutch companies are using our cloud services. . It makes use of the Eagle Genomics platform running on AWS, resulting in that Unilever’s digital data program now processes genetic sequences twenty times faster—without incurring higher compute costs.

Cloud 129

Cloud Energy AWS Healthcare 129

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

All Things Distributed

APRIL 5, 2012

Of course, with as much textual data as we have we are leveraging Lucene/SOLR (a NoSQL solution) for Search and Semantic processing. The best part was that the entire process was what I call Ã?hands Troy: The initial architecture was based on MySQL– weve continued with use of SQL but are now leveraging RDS. hands freeÃ?

Innovation 146

Innovation AWS Education Network 146

Alex Russell

APRIL 29, 2021

Chrome has missed several APIs for 3+ years: Storage Access API. Helps media apps on the web save battery when doing video processing. Coordination APIs allow applications to save memory and processing power (albeit, most often in desktop and tablet form-factors). is access to hardware devices. Where Chrome Has Lagged.

Media 145

Media Games Education Engineering 145

ACM Sigarch

NOVEMBER 4, 2019

Krste Asanovic from UC Berkeley kicked off the main program sharing his experience on “ Rejuvenating Computer Architecture Research with Open-Source Hardware ”. He ended the keynote with a call to action for open hardware and tools to start the next wave of computing innovation. This year’s MICRO had three inspiring keynote talks.

Hardware 18

Hardware Architecture Programming Innovation 18

Smashing Magazine

JANUARY 15, 2019

how much data does the browser have to download to display your website) and resource usage of the hardware serving and receiving the website. An obvious metric here is CPU usage, but memory usage and other forms of data storage also play their part. These include data transfer (i.e. In Conclusion.

Website Performance 73

Website Performance Website Energy Performance 73

Highly Scalable

SEPTEMBER 18, 2012

Although it can hardly be said that NoSQL movement brought fundamentally new techniques into distributed data processing, it triggered an avalanche of practical studies and real-life trials of different combinations of protocols and algorithms. Read/Write requests are processes with a minimal latency. Data Placement. Fault-tolerance.

Database 213

Database Latency C++ Scalability 213

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 104

Performance Cache Network Metrics 104

Smashing Magazine

JANUARY 6, 2020

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 145

Performance Cache Network Metrics 145

Alex Russell

OCTOBER 22, 2017

Answering it requires an understanding of how browsers process resources (which differs by type) and the concept of the critical path. This input processing happens on document’s main thread , where JavaScript runs. Processing input (including scrolling w/ active touch listeners). ” A good question!

Performance 68

Performance Benchmarking Network Mobile 68

Smashing Magazine

JANUARY 11, 2021

Micro-optimizations are great for keeping performance on track, but it’s critical to have clearly defined targets in mind — measurable goals that would influence any decisions made throughout the process. Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 145

Performance Cache Media Metrics 145

The Morning Paper

JANUARY 19, 2020

Humans can of course work in teams, with a structure resembling that of the system itself , so I’m not saying everything must fit in a single mind, but each of the pieces that need to be understood as a whole do need to. But do A and C share the same storage, compute, or network resources for example? Go overdrawn (i.e.,

C++ 50

C++ Systems Software Software 50

Alex Russell

JULY 14, 2021

Here, native apps are doing work related to their core function; storage and tracking of user data are squarely within the four corners of the app's natural responsibilities. Hardware access APIs, notably: Geolocation. Fixing mobile won't be sufficient to unwind desktop's increasingly negative dark patterns, of course.

Google 121

Google Mobile Engineering Internet 121

Brendan Gregg

SEPTEMBER 5, 2017

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). On Linux, containers are a combination of namespaces (restricting what a process sees) and cgroups (similar to Solaris resource controls). amazon").

Virtualization 76

Virtualization AWS Engineering Hardware 76