All Things Distributed

OCTOBER 25, 2013

In the back to basics readings this week I am re-reading a paper from 1995 about the work that I did together with Thorsten on solving the problem of end-to-end low-latency communication on high-speed networks. The lack of low-latency made that distributed systems (e.g.

Network 86

Network Latency Operating System Speed 86

The Netflix TechBlog

SEPTEMBER 24, 2021

Uploading and downloading data always come with a penalty, namely latency. The following table breaks down the various processing (including download) and uploading phases within an assembler and packager instance operating on large media files. MezzFS borrows from how operating systems handle page faults.

Cloud 240

Cloud Media Storage Cache 240

Dynatrace

MAY 17, 2023

We’d like to get deeper insight into the host, the underlying operating system, and any third-party services used by our application. This allows us to quickly tell whether the network link may be saturated or the processor is running at its limit. Host monitoring We start off with the very first layer: the host itself.

Metrics 182

Metrics Monitoring Database Network 182

Dynatrace

APRIL 26, 2022

With DEM solutions, organizations can operate over on-premise network infrastructure or private or public cloud SaaS or IaaS offerings. It is proactive monitoring that simulates traffic with established test variables, including location, browser, network, and device type. One of the key advantages of DEM is its versatility.

Monitoring 216

Monitoring Social Media IoT Metrics 216

The Netflix TechBlog

JUNE 4, 2019

Because microprocessors are so fast, computer architecture design has evolved towards adding various levels of caching between compute units and the main memory, in order to hide the latency of bringing the bits to the brains. This avoids thrashing caches too much for B and evens out the pressure on the L3 caches of the machine.

Cache 256

Cache Latency Airlines Logistics 256

Scalegrid

FEBRUARY 8, 2024

Durability Availability Fault tolerance These combined outcomes help minimize latency experienced by clients spread across different geographical regions. Handling Large Volumes of Data Distributed storage systems employ the technique of data sharding or partitioning to handle immense quantities of information.

Storage 130

Storage Systems Big Data Azure 130

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. Where does Lambda fit in the AWS ecosystem?

Lambda 189

Lambda AWS Serverless Hardware 189

Scalegrid

JANUARY 12, 2024

This is sometimes referred to as using an “over-cloud” model that involves a centrally managed resource pool that spans all parts of a connected global network with internal connections between regional borders, such as two instances in IAD-ORD for NYC-JS webpage DNS routing. This also aids scalability down the line.

Cloud 130

Cloud Virtualization Storage Efficiency 130

Adrian Cockcroft

JANUARY 20, 2023

In comparison, for Linpack Frontier operates at 68% of peak capacity. Most of the top supercomputers are similar to Frontier, they use AMD or Intel CPUs, with GPU accelerators, and Cray Slingshot or Infiniband networks in a Dragonfly+ configuration.

Architecture 52

Architecture Latency Benchmarking AWS 52

Scalegrid

JUNE 7, 2024

and MQTT 5 ensures that RabbitMQ can interoperate seamlessly within our growingly networked world, establishing itself as a multipurpose instrument in today’s vast technological landscape. Its compatibility with MQTT, known for being a compact messaging protocol, Demonstrates its adaptability for use in Internet of Things (IoT) contexts.

IoT 130

IoT Software Architecture Architecture Scalability 130

Smashing Magazine

OCTOBER 31, 2023

Type 2: Full Real-User Monitoring (RUM) If CrUX offers one flavor of real-user data, then we can consider “full real-user data” to be another flavor that provides even more in the way individual experiences, such as specific network requests made by the page. The accuracy of observed data depends on how the test environment is set up.

Speed 100

Speed Google Website Metrics 100

Dotcom-Montior

NOVEMBER 24, 2021

There was a time when standing up a website or application was simple and straightforward and not the complex networks they are today. Web developers or administrators did not have to worry or even consider the complexity of distributed systems of today. Great, your system was ready to be deployed. Do you have a database?

Systems 74

Systems Monitoring Hardware Network 74

The Morning Paper

MAY 12, 2019

The paper examines the implications of microservices at the hardware, OS and networking stack, cluster management, and application framework levels, as well as the impact of tail latency. The top line shows the change in tail latency across a set of monolithic applications as operating frequency decreases.

Open Source 61

Open Source Hardware Benchmarking Systems 61

Testsigma

JULY 23, 2020

This is a standalone software program which doesn’t depend on any internet connectivity for its working and its performance is not impacted because of any network related latencies. Any network-related latencies result in performance hindrances in these types of applications.

Testing 63

Testing Internet Internet Latency 63

Adrian Cockcroft

APRIL 5, 2023

This proposal seeks to define a standard for real-time carbon and energy data as time-series data that would be accessed alongside and synchronized with the existing throughput, utilization and latency metrics that are provided for the components and applications in computing environments.

Energy 52

Energy Metrics Cloud Architecture 52

All Things Distributed

MARCH 11, 2016

Failures are a given and everything will eventually fail over time: from routers to hard disks, from operating systems to memory units corrupting TCP packets, from transient errors to permanent failures. The importance of the network. Each of those workloads have unique requirements when it comes to the network.

AWS 135

AWS Hardware Retail Virtualization 135

O'Reilly

DECEMBER 2, 2019

The most obvious change 5G might bring about isn’t to cell phones but to local networks, whether at home or in the office. High-speed networks through 5G may represent the next generation of cord cutting. Those waits can be significant, even if you’re on a corporate network. What will 5G mean in practice? I don’t, do you?

Wireless 53

Wireless Serverless IoT Artificial Intelligence 53

Percona

APRIL 17, 2023

In this blog post, we will discuss the best practices on the MongoDB ecosystem applied at the Operating System (OS) and MongoDB levels. 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.

Best Practices 52

Best Practices Design Tuning Database 52

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?** 90491 N|rnberg (Germany) Consulting+Networking+Programming+etc'ing 42. File system I/O?

Latency 111

Latency Metrics C++ Systems 111

Adrian Cockcroft

NOVEMBER 18, 2019

AWS Developer Relations on how the shift from Robot Operating System (ROS) 1 to ROS 2 will change the landscape for all robot lovers. OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto.

Open Source 40

Open Source AWS Lambda Serverless 40

Adrian Cockcroft

NOVEMBER 18, 2019

AWS Developer Relations on how the shift from Robot Operating System (ROS) 1 to ROS 2 will change the landscape for all robot lovers. OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto.

Open Source 40

Open Source AWS Lambda Serverless 40

The Morning Paper

JUNE 30, 2019

In such a situation I’d expect to see unusually high latencies, but normal throughput). I was only partially right (there is a steady-state queue involved)… Plus, although it’s not described, the performance degradation observed in this case would almost certainly be poor latency and poor throughput. Hence convoys will occur.

Traffic 75

Traffic Latency Programming Scalability 75

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. This means that the overheads of system calls become much more noticeable. in front of that memory , as we saw last week).

Hardware 56

Hardware Programming Media Storage 56

O'Reilly Software

APRIL 4, 2018

A message-oriented implementation requires an efficient messaging backbone that facilitates the exchange of data in a reliable and secure way with the lowest latency possible. When we work on a single machine, the operating system takes care of managing the resources allocated to applications.

Architecture 80

Architecture Scalability Google Operating System 80

All Things Distributed

OCTOBER 2, 2017

The success of our early results with the Dynamo database encouraged us to write Amazon's Dynamo whitepaper and share it at the 2007 ACM Symposium on Operating Systems Principles (SOSP conference), so that others in the industry could benefit. This was the genesis of the Amazon Dynamo database.

Internet 120

Internet Internet AWS Performance 120

The Morning Paper

APRIL 14, 2019

There are also stateless interconnects including buses and on-chip networks. Even when we do flush caches, the latency of flushing can itself be used as a channel! Requirement 4 : State flushing must be padded to its worst-case latency. Side-channels are similar, but the sender does not actively cooperate).

Hardware 44

Hardware Cache Latency Speed 44

Adrian Cockcroft

NOVEMBER 11, 2019

Collecting some critical metrics at one second intervals, with a total observability latency of ten seconds or less matches the human attention span much better. For systems that are latency sensitive, creating two independent ways to succeed is an important technique for greatly reducing the 99th percentile latency.

Latency 52

Latency Engineering Systems Hardware 52

Adrian Cockcroft

NOVEMBER 11, 2019

Collecting some critical metrics at one second intervals, with a total observability latency of ten seconds or less matches the human attention span much better. For systems that are latency sensitive, creating two independent ways to succeed is an important technique for greatly reducing the 99th percentile latency.

Latency 53

Latency Engineering Systems Hardware 53

ScaleOut Software

MAY 15, 2014

Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Also, load-balancing after membership changes must be both multi-threaded and pipelined to drive the network at maximum bandwidth. Please retry later.

Cache 40

Cache Servers Network Design 40

SQL Server According to Bob

JANUARY 11, 2020

Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations. SQL Server always checks I/O completion status for any operating system error conditions and proper data transfer size and then handles errors appropriately.

Servers 40

Servers Cache Media Hardware 40

SQL Server According to Bob

JANUARY 11, 2020

Subsystem / Path The ​​ I/O subsystem or path ​​ includes ​​ those ​​ components ​​ that are ​​ used to support an I/O operation. aspx ) and ​​ Sparse Files ​​ ( [link] f ault.asp?url=/library/en-us/fileio/fs/sparse_files.asp

Servers 40

Servers Cache Database Media 40

Testsigma

FEBRUARY 12, 2021

The growing demand for IoT-testing is the government’s gradual acceptance of smart cities’ concept, which is why businesses are keen to incorporate IoT into their networks. Millions of different mobile apps are listed in various play stores of different operating systems. Autonomous Test Automation.

Artificial Intelligence 92

Artificial Intelligence Software Software IoT 92

Smashing Magazine

JANUARY 7, 2019

If you don’t have a device at hand, emulate mobile experience on desktop by testing on a throttled network (e.g. To make the performance impact more visible, you could even introduce 2G Tuesdays or set up a throttled 3G network in your office for faster testing. 150ms RTT, 1.5 Mbps down, 0.7 Mbps up) with a throttled CPU (5× slowdown).

Performance 105

Performance Cache Network Metrics 105