Dynatrace

DECEMBER 2, 2021

These can include business metrics, such as conversion rates, uptime, and availability; service metrics, such as application performance; or technical metrics, such as dependencies to third-party services, underlying CPU, and the cost of running a service. availability of a website over a year, your error budget is.05%.

Metrics 190

Metrics Best Practices DevOps Infrastructure 190

Adrian Cockcroft

AUGUST 1, 2022

photo by Adrian I gave a talk at Monitorama in Portland Oregon in June, which set out the idea that carbon is just another metric to monitor, and that in a few years most of the monitoring and performance tuning tools are going to be reporting and optimizing for carbon alongside latency, throughput, availability and cost.

AWS 52

AWS Virtualization DevOps Latency 52

Dynatrace

JANUARY 14, 2022

However, setting the right parameters for Kubernetes clusters to ensure application availability, performance, and resilience while avoiding overspending isn’t a walk in the park. Tuning thousands of parameters has become an impossible task to achieve via a manual and time-consuming approach. The Akamas approach. lower than 2%.).

Latency 203

Latency Tuning Efficiency AWS 203

The Netflix TechBlog

JUNE 14, 2023

This blog post will share broadly-applicable techniques (beyond GraphQL) we used to perform this migration. To determine customer impact, we could compare various metrics such as error rates, latencies, and time to render. The Replay Testing framework leverages the @override directive available in GraphQL Federation.

Traffic 353

Traffic Latency Cache Metrics 353

The Netflix TechBlog

JUNE 13, 2023

Our previous blog post presented replay traffic testing — a crucial instrument in our toolkit that allows us to implement these transformations with precision and reliability. This blog post will delve into the techniques leveraged at Netflix to introduce these changes to production.

Traffic 279

Traffic Metrics Systems Strategy 279

Percona

APRIL 13, 2023

In this blog, we will discuss what replication lag is, why it occurs, and how to mitigate it in PostgreSQL. In PostgreSQL, replication lag can occur due to various reasons such as network latency, slow disk I/O, long-running transactions, etc. One of the common issues that can be encountered in PostgreSQL is replication lag.

Latency 83

Latency Tuning Open Source Network 83

Percona

MARCH 23, 2023

This blog is in reference to our previous ones for ‘Innodb Performance Optimizations Basics’ 2007 and 2013. Although there have been many blogs about adjusting MySQL variables for better performance since then, I think this topic deserves a blog update since the last update was a decade ago, and MySQL 5.7

Performance 127

Performance Hardware Tuning Storage 127

Percona

APRIL 7, 2023

If we were to select the most important MySQL setting, if we were given a freshly installed MySQL or Percona Server for MySQL and could only tune a single MySQL variable, which one would it be? MySQL comes pre-configured to be conservative instead of making the most of the resources available in the server. Why is that?

Tuning 137

Tuning Cache Servers Benchmarking 137

The Netflix TechBlog

DECEMBER 21, 2020

These principles reduce resource usage by being more efficient and effective while lowering the end-to-end latency in data processing. It is responsible for listening to incoming events and requests and prioritizing different tables and actions to make the best usage of the available resources. More processing resources.

Storage 203

Storage Latency Efficiency Data Engineering 203

The Netflix TechBlog

JULY 26, 2021

From the moment a Netflix film or series is pitched and long before it becomes available on Netflix, it goes through many phases. Operational Reporting is a reporting paradigm specialized in covering high-resolution, low-latency data sets, serving detailed day-to-day activities¹ and processes of a business domain.

Big Data 253

Big Data Government Analytics Processing 253

Dynatrace

JANUARY 26, 2021

Every time the trigger executes, the function runs on an available resource. When an application is triggered, it can cause latency as the application starts. Serverless vendors make resources available exactly when you need them. This creates latency when they need to restart. Monitoring serverless applications.

Serverless 243

Serverless Efficiency Lambda Azure 243

The Netflix TechBlog

AUGUST 13, 2020

You’re half awake and wondering, “Is there really a problem or is this just an alert that needs tuning? Telltale learns what constitutes typical health for an application, no alert tuning required. For example, a latency increase is less critical than error rate increase and some error codes are less critical than others.

Monitoring 210

Monitoring Tuning Traffic Metrics 210

The Netflix TechBlog

AUGUST 22, 2019

In this blog post, we describe how we improved the methodology, which technologies we leveraged, and how this has improved service deployment and consistency. Once the instance was available, the engineer would use a remote administration tool like RDP to login to the instance to install software and customize settings.

DevOps 207

DevOps AWS Tuning Infrastructure 207

Dynatrace

DECEMBER 22, 2019

After being available in an Early Adopter Release, we’re happy to announce that AWS supporting services are now Generally Available (GA). Supporting services include every service that isn’t available with out-of-the-box Dynatrace monitoring. Stay tuned for updates in Q1 2020. You can also create custom charts.

AWS 136

AWS Metrics IoT Storage 136

The Netflix TechBlog

FEBRUARY 9, 2021

For more background on Growth Engineering and the signup funnel, please have a look at our previous blog post that covers the basics. Device sends a request for the plan selection page As discussed in our previous Growth Engineering blog post, we use a custom JSON protocol between our client UIs and our middle-tier Orchestration Service.

Engineering 142

Engineering Scalability Architecture Innovation 142

Dynatrace

DECEMBER 22, 2019

After being available in an Early Adopter Release, we’re happy to announce that AWS supporting services are now Generally Available (GA). Supporting services include every service that isn’t available with out-of-the-box Dynatrace monitoring. Stay tuned for updates in Q1 2020. You can also create custom charts.

AWS 133

AWS Metrics IoT Storage 133

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Checking those available: $ cat /sys/devices/system/clocksource/clocksource0/available_clocksource. html [unroll the loop]: /blog/2014-04-26/the-noploop-cpu-benchmark.html You have two hands: observation and experimentation.

Speed 126

Speed Java AWS Virtualization 126

The Netflix TechBlog

NOVEMBER 2, 2021

Cosmos offers several benefits as highlighted in the linked blog, such as separation of concerns, independent deployments, observability, rapid prototyping and productization. This enables us to use our scale to increase throughput and reduce latencies. The quality results are now available to the caller via the getQuality endpoint.

Media 171

Media Innovation Metrics Latency 171

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. The main objective of this post is to share my experience over the past years tuning MongoDB and centralize the diverse sources that I crossed in this journey in a unique place. 25.84 - Total 21.04

Best Practices 52

Best Practices Design Tuning Database 52

The Netflix TechBlog

FEBRUARY 18, 2022

In this blog post, we will give an overview of the Rapid Event Notification System at Netflix and share some of the learnings we gained along the way. This separation allows us to tune system configuration and scaling policies independently for different event priorities and traffic patterns.

Systems 334

Systems Traffic Architecture Mobile 334

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Requirements In a previous blog post, we discussed Delta , a data enrichment and synchronization platform.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

In order to be supported, a database is required to fulfill a set of features that are commonly available in systems like MySQL, PostgreSQL, MariaDB, and others. Designed with High Availability in mind. Requirements In a previous blog post, we discussed Delta , a data enrichment and synchronization platform. Figure 3?—?DBLog

Database 197

Database Traffic Transportation Open Source 197

The Netflix TechBlog

JULY 21, 2022

More importantly, the low resource availability or “out of memory” scenario is one of the common reasons for crashes/kills. Since memory management is not something one usually associates with classification problems, this blog focuses on formulating the problem as an ML problem and the data engineering that goes along with it.

Big Data 179

Big Data Cache Engineering Data Engineering 179

All Things Distributed

APRIL 9, 2015

Amazon ML uses powerful algorithms that can help you create machine learning models by finding patterns in existing data, and using these patterns to make predictions from new data as it becomes available. Details on the AWS Blog. Details on the AWS Blog. Today Amazon Lambda is entering General Availability.

Lambda 122

Lambda Cloud IoT AWS 122

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. The change was obvious in the production graphs, showing a drop in write latencies: Once tested more broadly, it showed the write latencies dropped by 43%, delivering slightly better performance than on CentOS.

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

AUGUST 22, 2021

Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server). Two-way latency is often called round-trip time (RTT).

Performance 106

Performance Network Latency Servers 106

All Things Distributed

DECEMBER 12, 2013

We launched DynamoDB last year to address the need for a cloud database that provides seamless scalability, irrespective of whether you are doing ten transactions or ten million transactions, while providing rock solid durability and availability. Now you can run queries on any item attributes (columns) in your DynamoDB table.

Games 130

Games Scalability Database Retail 130

HammerDB

OCTOBER 18, 2019

Nevertheless in this blog sometimes we do publish performance data to highlight best practices or potential configuration pitfalls and although we’ve mentioned this one before it is worth dedicating an entire post to it as this issue seems to appear numerous times running database workloads on Linux. (Yes

Benchmarking 63

Benchmarking Performance Hardware C++ 63

Brendan Gregg

SEPTEMBER 5, 2017

What follows are topics that may be of interest to anyone looking to migrate their systems and skillset: scan these to find topics that interest you. ## ZFS ZFS is available for Linux via the [zfsonlinux] and [OpenZFS] projects, and more recently was included in Canonical's Ubuntu Linux distribution: Ubuntu Xenial 16.04 LTS (April 2016).

Virtualization 76

Virtualization AWS Engineering Hardware 76

Smashing Magazine

SEPTEMBER 6, 2021

Finally, not inlining resources has an added latency cost because the file needs to be requested. As such, a micro-optimization is, again, how you probably need to fine-tune things on a low level to really benefit from it. Luckily, other lower-level tools are available to help with this. What Does It All Mean?

Network 105

Network Servers Cache Traffic 105

Percona

NOVEMBER 3, 2023

Rather than listing the concepts, function calls, etc, available in Citus, which frankly is a bit boring, I’m going to explore scaling out a database system starting with a single host. And now, execute the benchmark: -- execute the following on the coordinator node pgbench -c 20 -j 3 -T 60 -P 3 pgbench The results are not pretty.

Database 106

Database Benchmarking Latency C++ 106

Smashing Magazine

AUGUST 9, 2021

You may have read some blog posts or heard conference talks on this topic and think you know the answers. ISPs and intermediate networks might block it because metrics such as average delays and packet loss percentages are no longer easily available, making it more difficult to detect and diagnose problems. Stay tuned! (vf,

Transportation 145

Transportation Internet Internet Network 145

John McCalpin

APRIL 25, 2023

Some I will address today, and some in the next blog entry. Details in the next blog entry.) Multicore processors have huge amounts of available DRAM bandwidth – maybe it does not even make sense for a single core to try to use that much? Stay tuned! These observations naturally give rise to a variety of questions.

Benchmarking 97

Benchmarking Cache Latency Tuning 97