Dynatrace

JUNE 27, 2022

These development and testing practices ensure the performance of critical applications and resources to deliver loyalty-building user experiences. Real user monitoring (RUM) is a performance monitoring process that collects detailed data about users’ interactions with an application. What is real user monitoring?

Best Practices 175

Best Practices Monitoring Wireless Traffic 175

The Agile Manager

DECEMBER 17, 2008

Traditional IT projects are mass economy-of-scale exercises: once development begins, armies of developers are unleashed. But of bigger concern is the latency between the time when requirements are captured and the time they're available as working code in an environment. An Agile team is not an exercise in scale.

Latency 40

Latency Code Metrics Testing 40

CSS - Tricks

APRIL 1, 2021

Site performance is potentially the most important metric. The better the performance, the better chance that users stay on a page, read content, make purchases, or just about whatever they need to do. With all of this in mind, I thought improving the speed of my own version of a slow site would be a fun exercise. Lighthouse.

Cache 92

Cache Social Media Media Website 92

John McCalpin

AUGUST 1, 2018

Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? If I am analyzing (apparent) performance shortfalls, how can I distinguish between cause and effect ? The processor hardware available to support shared-memory transport.

Hardware 40

Hardware Transportation Performance Latency 40

All Things Distributed

OCTOBER 2, 2017

We were pushing the limits of what was a leading commercial database at the time and were unable to sustain the availability, scalability and performance needs that our growing Amazon business demanded. Performant – The service would need to be able to maintain consistent performance in the face of diverse customer workloads.

Internet 130

Internet Internet AWS Performance 130

All Things Distributed

NOVEMBER 21, 2017

Developers love the performance, simplicity, and in-memory capabilities of Redis, making it among the most popular NoSQL key-value stores. Redis's microsecond latency has made it a de facto choice for caching. ElastiCache for Redis delivers predictable microsecond latencies and is super easy to use. Under the hood.

Games 113

Games Retail Latency Education 113

The Morning Paper

JULY 4, 2019

Moreover, just like an A/B test, we’ll be collecting metrics while the experiment is underway and performing statistical analysis at the end to interpret the results. Two failure modes we focus on are a service becoming slower (increase in response latency) or a service failing outright (returning errors).

Latency 77

Latency Engineering Metrics Traffic 77

Brendan Gregg

JUNE 30, 2018

A co-worker introduced me to Craig Hanson and Pat Crain's performance mantras, which neatly summarize much of what we do in performance analysis and tuning. They are: **Performance mantras**. These have inspired me to summarize another performance activity: evaluating benchmark accuracy. Don't do it. Do it less.

Benchmarking 54

Benchmarking Latency Cache Network 54

The Agile Manager

AUGUST 23, 2007

IT reward systems are also often based on individual performance tied to granular and highly focused statements of accomplishment. electing to continue to perform technical tasks), and also be highly unleveraged in a team (one manager to dozens of direct reports.) 6 “What we are is a high performance team.” 1 Teal, Thomas. "

Innovation 40

Innovation Technology Technology Latency 40

Brendan Gregg

JUNE 29, 2018

A co-worker introduced me to Craig Hanson and Pat Crain's performance mantras, which neatly summarize much of what we do in performance analysis and tuning. They are: **Performance mantras**. These have inspired me to summarize another performance activity: evaluating benchmark accuracy. Don't do it. Do it less.

Benchmarking 40

Benchmarking Latency Cache Network 40

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. Therefore any programming abstraction must be low latency and the kernel needs to be kept off the path of persistent data access as much as possible. Early performance results. PLOS’19.

Hardware 56

Hardware Programming Media Storage 56

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. 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. A resilient system continues to operate successfully in the presence of failures.

Latency 52

Latency Engineering Systems Hardware 52

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. With only an hour or so of degraded performance in the end, it’s not the worst incident you can imagine, but it was clearly taken as very serious given the time of year.

Internet 53

Internet Internet Cache Engineering 53

The Morning Paper

NOVEMBER 14, 2019

Taiji’s routing table is a materialized representation of how user traffic at various edge nodes ought to be distributed over available data centers to balance data center utilization and minimize latency. The nodes for level of the tree are generated by performing balanced bipartitions that minimize edge cuts of the nodes in level.

Traffic 42

Traffic Internet Internet Latency 42

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. 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. A resilient system continues to operate successfully in the presence of failures.

Latency 53

Latency Engineering Systems Hardware 53

All Things Distributed

NOVEMBER 15, 2010

This incredible power is available for anyone to use in the usual pay-as-you-go model, removing the investment barrier that has kept many organizations from adopting GPUs for their workloads even though they knew there would be significant performance benefit. with a peak performance of 4.701 PetaFLOPS.

AWS 136

AWS Latency Programming Architecture 136

John McCalpin

JANUARY 22, 2018

There was no deep goal — just a desire to see the maximum GFLOPS in action. The exercise seemed simple enough — just fix one item in the Colfax code and we should be finished. For 64-bit floating-point data, the 512-bit Fused Multiply-Add (FMA) instructions performs 16 floating-point operations (8 adds and 8 multiplies).

Latency 40

Latency Hardware Code Testing 40

O'Reilly Software

MARCH 7, 2018

blocking), discarding data, or none—which can lead to resilience problems, poor performance, or worse: rapid unscheduled disassembly in production. map(e -> e.toString): is a flow stage that is performing a transformation—turning Integers into Strings—and is of type Flow. range ( 1 , 100 ). map ( e -> e. toString ()). of ( Order.

Transportation 72

Transportation Java Programming Architecture 72

The Netflix TechBlog

MARCH 6, 2019

during a typical week at Netflix, MezzFS performs ~100 million mounts for dozens of different use cases and streams about ~25 petabytes of data. We use this to debug errors and performance issues in specific mounts. More on this below… Adaptive buffering ?—?More How much faster is this?

Media 214

Media Storage Processing Cache 214