Dynatrace

NOVEMBER 28, 2022

The new Amazon capability enables customers to improve the startup latency of their functions from several seconds to as low as sub-second (up to 10 times faster) at P99 (the 99th latency percentile). This can cause latency outliers and may lead to a poor end-user experience for latency-sensitive applications.

Lambda 225

Lambda AWS Serverless Latency 225

Dynatrace

MAY 13, 2022

In addition to the built-in views, Dynatrace provides data analysis that enhances your ability to query and chart metrics. With the Dynatrace Data Explorer, you can easily analyze metrics, such as client read/write latency by Cassandra nodes and disk space usage by keyspaces.

Azure 236

Azure Latency Metrics Infrastructure 236

Dynatrace

SEPTEMBER 13, 2023

This process enables you to continuously evaluate software against predefined quality criteria and service level objectives (SLOs) in pre-production environments. The Site Reliability Guardian also helps keep your production environment safe and secure through automated change impact analysis.

AWS 246

AWS Efficiency Azure Cloud 246

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. Its goal is to assign running processes to time slices of the CPU in a “fair” way. Linux to the rescue?

Cache 251

Cache Latency Airlines Logistics 251

Randon ASCII

SEPTEMBER 8, 2019

Sometimes the challenge in trace analysis is to find where the issue is, but for this issue that part of the analysis was trivial. This means that there is no caching between RuntimeBroker.exe and this file. The ETW trace records me right-clicking on the task bar to close two Explorer windows. Think about that for a moment.

Latency 79

Latency Cache Programming Operating System 79

Dynatrace

OCTOBER 4, 2022

However, organizations must structure and store data inputs in a specific format to enable extract, transform, and load processes, and efficiently query this data. Data lakehouses offer a way to interrogate the data and send processing instructions in the form of queries. Massively parallel processing.

Artificial Intelligence 208

Artificial Intelligence Analytics Storage Government 208

The Netflix TechBlog

SEPTEMBER 8, 2020

This allows the app to query a list of “paths” in each HTTP request, and get specially formatted JSON (jsonGraph) that we use to cache the data and hydrate the UI. Being able to canary a new route let us verify latency and error rates were within acceptable limits. This meant that data that was static (e.g.

Latency 233

Latency Cache Java Traffic 233

Dynatrace

NOVEMBER 3, 2021

Monitoring , by textbook definition, is the process of collecting, analyzing, and using information to track a program’s progress toward reaching its objectives and to guide management decisions. Examples include a spike in memory utilization, a decrease in cache hit ratio, or an increase in CPU utilization.

Monitoring 220

Monitoring Metrics DevOps Scalability 220

Adrian Cockcroft

JANUARY 29, 2023

The mean and percentile measurements hide this structure, but the rest of this post will show how the structure can be measured and analyzed so that you can figure out a useful model of your system, understand what is driving the long tail of latencies and come up with better SLAs and measures of capacity.

Lambda 98

Lambda Latency Cache C++ 98

Scalegrid

FEBRUARY 8, 2024

This process effectively duplicates essential parts of information to safeguard against potential loss. Durability Availability Fault tolerance These combined outcomes help minimize latency experienced by clients spread across different geographical regions.

Storage 130

Storage Systems Big Data Azure 130

The Morning Paper

OCTOBER 4, 2020

We are standing on the eve of the 5G era… 5G, as a monumental shift in cellular communication technology, holds tremendous potential for spurring innovations across many vertical industries, with its promised multi-Gbps speed, sub-10 ms low latency, and massive connectivity. Throughput and latency. The short answer is no.

Energy 130

Energy Latency Performance Network 130

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 110

Performance Latency Cache Virtualization 110

Smashing Magazine

AUGUST 3, 2023

However, achieving a good LCP score is often a multi-faceted process that involves optimizing several stages of loading and rendering. HTML Processing Once a web page’s HTML file has been downloaded, the browser begins to process the contents line by line, translating code into the visual website that users interact with.

Performance 74

Performance Cache Traffic Metrics 74

Percona

JUNE 22, 2023

This includes metrics such as query execution time, the number of queries executed per second, and the utilization of query cache and adaptive hash index. query cache: Disable (query_cache_size: 0, query_cache_type:OFF) innodb_adaptive_hash_index: Check adaptive hash index usage to determine its efficiency.

Performance 106

Performance Monitoring Traffic Database 106

The Morning Paper

SEPTEMBER 10, 2019

Anchored in the primary use case of supporting Google’s YouTube business, what we’re looking at here could well be the future of data processing at Google. Google already has Dremel , Mesa , Photon , F1 , PowerDrill , and Spanner , so why did they need yet another data processing system? are divided.

Analytics 75

Analytics Latency Cache Google 75

Smashing Magazine

MAY 16, 2022

Examples of this might be, expecting that the HTML is fully static, such that we can cache it downstream in some deterministic manner — “partially dynamic” HTML bodies are much more likely to be handled incorrectly by caching logic. In this case, we can’t expect each layer could/should process and inject HTML content.

Servers 92

Servers Monitoring Cache Network 92

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. It is also recommended to have experienced professionals accompany you throughout the process.

Best Practices 52

Best Practices Strategy Traffic Virtualization 52

Brendan Gregg

AUGUST 18, 2019

For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. bpftrace is suited for this kind of analysis: decomposing metrics into distributions or per-event logs, and creating new metrics for visibility into blind spots. pid process ID.

Latency 68

Latency C++ Cache Programming 68

ACM Sigarch

MARCH 18, 2019

This Part 1 discusses Bottleneck Analysis and Little’s Law, while Part 2 presents the M/M/1 Queue. This post discusses Bottleneck Analysis and Little’s Law, while Part 2 touts the M/M/1 Queue. How many buffers are needed to track pending requests as a function of needed bandwidth and expected latency? Bottleneck Analysis.

Systems 60

Systems Latency Performance Analytics 60

Adrian Cockcroft

JANUARY 20, 2023

switches to connect processing nodes, pooled memory and I/O resources into very large coherent fabrics within a rack, and use Ethernet between racks. I have always been particularly interested in the interconnects and protocols used to create clusters, and the latency and bandwidth of the various offerings that are available.

Architecture 52

Architecture Latency Benchmarking AWS 52

Percona

SEPTEMBER 1, 2023

A finely tuned database processes queries more efficiently, leading to swifter results. This reduction in latency ensures that applications and websites provide a more rapid and responsive user experience. Query plan analysis can also provide valuable insights. Regularly optimizing query structures is vital.

Tuning 52

Tuning Database Performance Hardware 52

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

The Morning Paper

OCTOBER 6, 2019

Prediction serving latency matters. The Problem Construction Process takes as input a business case or concept and outputs a well-defined modeling problem (usually a supervised machine learning problem), such that a good solution effectively models the given business case or concept. Lesson 4: prediction serving latency matters.

Latency 102

Latency Metrics Cache Design 102

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. It is also recommended to have experienced professionals accompany you throughout the process.

Best Practices 40

Best Practices Strategy Traffic Virtualization 40

John McCalpin

APRIL 2, 2020

With a staff of slightly over 175 full-time employees (less than 1/2 in consulting roles), we must therefore focus on highly-leveraged performance analysis projects, rather than labor-intensive ones. Here I assumed a particular analytical function for the amount of memory traffic as a function of cache size to scale the bandwidth time.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

ACM Sigarch

MARCH 25, 2019

Part 1 previously discussed Bottleneck Analysis and Little’s Law, while this post (Part 2) presents the M/M/1 Queue. It also presented Bottleneck Analysis and Little’s Law that can give initial answers to questions like: What is the maximum throughput through several subsystems in series and parallel? and 1/S as ?.

Systems 53

Systems Latency Performance C++ 53

Brendan Gregg

JANUARY 17, 2018

It is used for capacity planning and scalability analysis. Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). For large processes (> 100 Gbytes) this duration of higher latency can last over 1 second, during which this tool is consuming system CPU time.

Cache 71

Cache Latency C++ Programming 71

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. Smaller microservices demonstrated much better instruction-cache locality than their monolithic counterparts. Hardware implications.

Open Source 61

Open Source Hardware Benchmarking Systems 61

The Morning Paper

JANUARY 23, 2020

Today we’ll be digging into the analysis of an incident that took place at Etsy on December 4th, 2014. 1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. The process tracing exercise included: Examning IRC transcripts from multiple channels. Event analysis.

Internet 53

Internet Internet Cache Engineering 53

ACM Sigarch

DECEMBER 6, 2018

Orchestrate the processing flow across an end-to-end infrastructure. Each of these categories opens up challenging problems in AI/visual algorithms, high-density computing, bandwidth/latency, distributed systems. Yolo , ResNet50 ). Generative and Interactive Visual Workloads.

Wireless 54

Wireless IoT Analytics Architecture 54

CSS - Tricks

JULY 25, 2019

Cache-Headers missing? Over the past couple of years, it has become the go-to free performance analysis tool. Estimated Input Latency. This process works by obtaining mobile 75th and 95th percentiles from HTTP Archive , then applying a log normal function. Estimated Input Latency. What changed in PageSpeed 5.0?

Google 71

Google Engineering Speed Mobile 71

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. Treo provides competitive analysis based on real-world data.

Performance 145

Performance Cache Media Metrics 145

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. The fastest Androids predictably remain 18-24 months behind, owing to cheapskate choices about cache sizing by Qualcomm, Samsung Semi, and all the rest.

Performance 124

Performance Network Cache Metrics 124

O'Reilly Software

JUNE 12, 2018

This meant a lot of time was spent on things like cycle time analysis, build pipeline design, test automation, and infrastructure automation. How do you ensure this is done in a way that is sympathetic to your application’s latency and load conditions? How do you do that effectively?

Database 72

Database Cache Architecture Latency 72

Brendan Gregg

JANUARY 16, 2018

It is used for capacity planning and scalability analysis. Short durations can be useful for understanding how well a WSS will fit into the CPU caches (L1/L2/L3, TLB L1/L2, etc). For large processes (> 100 Gbytes) this duration of higher latency can last over 1 second, during which this tool is consuming system CPU time.

Cache 40

Cache Latency C++ Programming 40

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 latency. Read/Write requests are processes with a minimal latency.

Database 213

Database Latency C++ Scalability 213

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? Treo Sites provides competitive analysis based on real-world data. Establish a performance culture. Large preview ).

Performance 145

Performance Cache Network Metrics 145