Dynatrace

MAY 17, 2023

Think about items such as general system metrics (for example, CPU utilization, free memory, number of services), the connectivity status, details of our web server, or even more granular in-application tasks like database queries. DNS query time indicates the average response times of DNS requests across the system.

Metrics 175

Metrics Monitoring Database Network 175

The Morning Paper

JANUARY 30, 2020

Edge servers are the middle ground – more compute power than a mobile device, but with latency of just a few ms. The Mobile Web Worker (MWW) System. 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.

Mobile 104

Mobile Cloud Latency Games 104

The Netflix TechBlog

SEPTEMBER 8, 2020

Over the course of this post, we will talk about our approach to this migration, the strategies that we employed, and the tools we built to support this. Being able to canary a new route let us verify latency and error rates were within acceptable limits. Background The Netflix Android app uses the falcor data model and query protocol.

Latency 233

Latency Cache Java Traffic 233

Dynatrace

JUNE 25, 2021

Distributed tracing describes the act of following a transaction through all participating applications (tiers) and sub-systems, such as databases. All systems that support distributed tracing use some identifiers, the trace context, that is passed along with the transaction. Of course, Dynatrace supports W3C Trace Context as well.

Open Source 202

Open Source Monitoring Google Systems 202

High Scalability

MARCH 22, 2019

µs of replication latency on lossy Ethernet, which is faster than or comparable to specialized replication systems that use programmable switches, FPGAs, or RDMA.". At some point, the e-mail I send over WiFi will hit a wire, of course". We achieve 5.5 We achieve 5.5 matthewstoller : I just looked at Netflix’s 10K.

Internet 134

Internet Internet Scalability Wireless 134

The Morning Paper

FEBRUARY 6, 2020

Oh, and there’s a scheduler too of course to keep all the plates spinning. On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network.

Serverless 98

Serverless Lambda Cache Latency 98

Percona

JULY 20, 2023

At Percona Support, we use pg_gather as the method to collect and study the wait events because it is a standalone SQL script and doesn’t need to install anything on the database systems. Of course, there are “ClientWrite” events, which is the wait event related to writing the data to the client (pg_dump) in this case.

Network 62

Network Performance Latency Servers 62

Dynatrace

MARCH 17, 2021

Complex IT systems make it possible to buy your favorite pair of jeans online, pay your bills, or help you navigate. These systems produce an unimaginably huge amount of data. You want to optimize your Citrix landscape with insights into user load and screen latency per server? Dynatrace news. Dynatrace Extensions 2.0

Metrics 173

Metrics Monitoring Network Technology 173

The Morning Paper

OCTOBER 26, 2020

As a production system within Microsoft capturing around a quadrillion events and indexing 16 trillion search keys per day it would be interesting in its own right, but there’s a lot more to it than that. These two narratives of reference architecture and ingestion/indexing system are interwoven throughout the paper.

Cloud 104

Cloud Big Data Latency Architecture 104

Percona

DECEMBER 11, 2023

DLVs are particularly advantageous for databases with large allocated storage, high I/O per second (IOPS) requirements, or latency-sensitive workloads. This segregation facilitates optimized I/O operations, preventing potential bottlenecks and enhancing overall system performance. Who can benefit from DLV?

AWS 95

AWS Benchmarking Performance Traffic 95

The Morning Paper

NOVEMBER 10, 2019

It’s been clear for a while that software designed explicitly for the data center environment will increasingly want/need to make different design trade-offs to e.g. general-purpose systems software that you might install on your own machines. The desire for CPU efficiency and lower latencies is easy to understand. Emphasis mine).

Network 92

Network Transportation Latency Entertainment 92

Alex Russell

MAY 9, 2022

This is a complex topic, but to borrow from a recent post , web performance expands access to information and services by reducing latency and variance across interactions in a session, with a particular focus on the tail of the distribution (P75+). Only teams that master their systems can make intentional trade-offs.

Performance 86

Performance Latency Metrics Engineering 86

Scalegrid

JULY 29, 2020

However, these must be set up outside the PostgreSQL system, while PgBouncer can offload this to the PostgreSQL server. Patterns of data access would play a role, as would the latencies involved based on your architecture. Administration. PgBouncer provides a virtual database that reports various useful statistics.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

Percona

MARCH 23, 2023

These guidelines work well for a wide range of applications, though the optimal settings, of course, depend on the workload. Operating system Linux is the most common operating system for high-performance MySQL servers. have been released since then with some major changes.

Performance 125

Performance Hardware Tuning Storage 125

The Morning Paper

JUNE 13, 2019

Making queries to an inference engine has many of the same throughput, latency, and cost considerations as making queries to a datastore, and more and more applications are coming to depend on such queries. Managed here means that the system automates resource provisioning for models to match a set of SLO constraints (cf. autoscaling).

Hardware 58

Hardware Latency Serverless Energy 58

The Morning Paper

NOVEMBER 15, 2020

This stems from a combination of Jevon’s paradox and the interconnectedness of systems – doing more in one area often leads to a need for more elsewhere too. At the end of the day, there are three basic ways we can increase capacity: Increasing the number of units in a system (subject to Amdahl’s law ). IDS/IPS requirements.

Servers 128

Servers Hardware Latency Design 128

Dotcom-Montior

NOVEMBER 16, 2021

In one of our previous articles , we discussed what an SRE is, what they do, and some of the common responsibilities that a typical SRE may have, like supporting operations, dealing with trouble tickets and incident response, and general system monitoring and observability. It is understood that no system is 100 percent reliable.

Monitoring 91

Monitoring Google DevOps Engineering 91

The Morning Paper

JUNE 23, 2019

Coupled with stateless application servers to execute business logic and a database-like system to provide persistent storage, they form a core component of popular data center service archictectures. Why are developers using RInK systems as part of their design? We’ve seen similar high marshalling overheads in big data systems too.)

Cache 79

Cache Latency Google Lambda 79

High Scalability

AUGUST 17, 2018

12 million requests / hour with sub-second latency, ~300GB of throughput / day. and others) you don’t know distributed systems.” And of course it would work on an Apple II and other 8 bit micros (Logo ran nicely on them, etc.). Its running in 3 nodes that cost us about $150 / month. myelixirstatus !#Serverless.No

Internet 105

Internet Internet Scalability Games 105

Dotcom-Montior

DECEMBER 8, 2021

Systems, web applications, servers, devices, etc., SREs and DevOps teams can use these incidents to build back better and improve their systems and services. We are kidding of course, but you know something is bad if happens that early in the morning. SREs must manage complex distributed systems. What is an Incident?

Social Media 90

Social Media Monitoring Latency DevOps 90

The Morning Paper

MARCH 3, 2020

In the same spirit as Paxos Made Live , this paper describes the details, choices and tradeoffs that are required to put a consensus system into production. This work is latency critical, because volume IO is blocked until it is complete. And, of course, it is designed to minimise the blast radius of any failures that do occur.

Database 106

Database AWS Network Design 106

Smashing Magazine

MARCH 25, 2021

Also, if you are not using a content delivery network (CDN) or multiple CDNs to map users to the closest edge regions for reduced latencies — a practice called suboptimal routing — you might slow down the start of the video. And of course, you need to host and deliver your images. You don’t have to offload your content.

Media 118

Media Performance Mobile Latency 118

Percona

JULY 17, 2023

5 among all database management systems and No. 1 among non-relational/document-based systems ( DB-Engines, July 2023 ). Taking a deeper dive, MongoDB is a system for analyzing data because documents are easily shared across multiple nodes and because of its indexing, query-on-demand, and real-time aggregation capabilities.

Open Source 75

Open Source Database Scalability Software 75

Highly Scalable

SEPTEMBER 18, 2012

As such, it encompasses distributed system coordination, failover, resource management and many other capabilities. These developments gradually highlight a system of relevant database building blocks with proven practical efficiency. System Coordination. Scalability is one of the main drivers of the NoSQL movement.

Database 213

Database Latency C++ Scalability 213

Particular Software

JUNE 3, 2019

From Udi Dahan's Advanced Distributed Systems Design Course , Day 1 Problem of scale The real problem with bandwidth is not one of absolute speed but one of scale. Design systems to deal with limited bandwidth: See what Udi has to say in Day 1 of his Advanced Distributed Systems Design video course. "Goldilocks"

Latency 40

Latency Speed Network Strategy 40

Dotcom-Montior

MAY 12, 2020

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. Network latency. Network Latency. Network latency can be affected due to. The list goes on and on. Website and Web Application Monitoring. Connection time.

Monitoring 63

Monitoring Entertainment Hardware Latency 63

The Morning Paper

NOVEMBER 24, 2019

This paper was published at OOPSLA, but perhaps it’s amongst the distributed systems community that I expect there to be the greatest interest. The paper sets the discussion in the context of geo-replicated distributed systems, but of course the same mechanisms could be equally useful in the context of local-first applications.

Strategy 104

Strategy Latency Systems Processing 104

The Morning Paper

FEBRUARY 23, 2020

There are five different types of member in an AnyLog system, and any network node can join without restriction as any type of member. A blockchain holds the metadata catalog for the system (participants register on the blockchain for discovery purposes) and also provides the trust and dispute resolution anchor for micropayments.

Blockchain 94

Blockchain Internet Internet IoT 94

O'Reilly

JANUARY 16, 2024

I’ve recently been brainstorming ideas for how to design such a system and how to deal with the practical challenges of scaling and maintenance. Speech recognition errors : ChatGPT’s speech recognition system (presumably based on OpenAI’s open-source Whisper model ) is very good, but it does at times misinterpret what I’m saying.

Entertainment 73

Entertainment Internet Internet Design 73

The Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. 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. PLOS’19.

Hardware 56

Hardware Programming Media Storage 56

The Morning Paper

SEPTEMBER 5, 2019

For response times (latencies) reporting a simple metric such as ‘average’ is next to useless. Instead we want to understand what’s happening at different latency percentiles (e.g A characteristic of latency distributions is that they have a long tail. Why do we need a new sketch? At the 50th percentile, an accuracy within 0.5%

Latency 52

Latency Metrics Open Source Java 52

The Morning Paper

SEPTEMBER 1, 2019

At the end of the day, you get the dual benefit of higher throughput and lower latency (as compared to coordination-based approaches) coupled with knowing that there isn’t some nasty invariant-violating concurrency bug waiting to bite you (so long as you specified your invariants and operation effects correctly of course!).

Database 42

Database Latency Games Design 42

Percona

MAY 15, 2023

The main reason behind this is that MySQL is a relational database system (RDBMS), and any data that is going to be written in it must respect the RDBMS rules. This, of course, is unless I can organize my products by country as well, which is a bit unusual nowadays but not impossible.

Traffic 123

Traffic Scalability Database Servers 123

The Morning Paper

JANUARY 23, 2020

1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. Peer consensus was the primary mechanism used to decide whether to take actions affecting the production systems, and on two occassions changes were pushed through without waiting for automated tests to complete.

Internet 53

Internet Internet Cache Engineering 53

Alex Russell

MARCH 6, 2021

Not as much as we'd like, of course, but the worldwide baseline has changed enormously. There are differences, of course, but not where it counts. Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. Talk about a hard target. I'm happy to report that it has.

Performance 124

Performance Network Cache Metrics 124

The Morning Paper

JANUARY 26, 2020

In the context of the papers we’ve been looking at recently, and for a constrained environment, Reverb is helping its users to form an accurate mental model of the system state, and to form and evaluate hypotheses in-situ. Of course you’d hope the authors were able to use their own tool effectively!

Programming 86

Programming Servers Network Latency 86

SQL Performance

APRIL 8, 2019

Of course, if I were buying an AMD-based server for on-premises SQL Server use right now, I would try to get the newer, frequency-optimized AMD EPYC 7371 processor. They feature low latency, local NVMe storage that can directly leverage the 128 PCIe 3.0 This makes it a good choice for many SQL Server workloads, especially DW workloads.

Azure 42

Azure Virtualization Storage Benchmarking 42