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Open Source for Open Knowledge

Tag: RUM

Perf Matters at Wikipedia in 2019

Looking back at our ups and downs. Including joining the W3C, implementing Paint Timing in upstream WebKit, and research on perceived performance.
Continue reading “Perf Matters at Wikipedia in 2019”…
Posted on: December 19, 2022 Last updated on: January 13, 2025 Timo Tijhof
Long exposure of highway with downtown skyscraper in the background of an unidentified city. There are green grass hills on both sides and a bright moon in the sky.

Perf Matters at Wikipedia in 2016

Looking back at our ups and downs. Including HTTP/2 deployment, metric collection improvements, and the begining of our journey to Thumbor.
Continue reading “Perf Matters at Wikipedia in 2016”…
Posted on: December 8, 2022 Last updated on: January 13, 2025 Timo Tijhof and Aaron Schulz

Tracking down slow event handlers with Event Timing

We’re taking part in the ongoing Event Timing Chrome origin trial, in order to experiment with that API early and give feedback to its designers.
Continue reading “Tracking down slow event handlers with Event Timing”…
Posted on: June 19, 2019 Last updated on: November 11, 2024 Gilles Dubuc

Performance perception: Correlation to RUM metrics

When we set out to ask Wikipedia visitors their opinion of page load performance, our main hope was to answer an age-old question: which RUM metric matters the most to users? And more interestingly, which ones matter the most to our users on our content.
Continue reading “Performance perception: Correlation to RUM metrics”…
Posted on: June 17, 2019 Last updated on: November 11, 2024 Gilles Dubuc

Performance perception: How satisfied are Wikipedia users?

We’ve recently published research on performance perception that we did last year. The micro survey used in this study is still running on multiple Wikipedia languages and gives us insights into perceived performance.
Continue reading “Performance perception: How satisfied are Wikipedia users?”…
Posted on: May 29, 2019 Last updated on: November 11, 2024 Gilles Dubuc

Evaluating Element Timing for images

In the search for a better user experience metric, we have tried out the upcoming Element Timing for Images API in Chrome.
Continue reading “Evaluating Element Timing for images”…
Posted on: April 10, 2019 Last updated on: November 11, 2024 Peter Hedenskog

Magic numbers

Should we be skeptical of performance guidelines which state that 100 milliseconds feels instantaneous to everyone?
Continue reading “Magic numbers”…
Posted on: January 24, 2019 Last updated on: November 11, 2024 Gilles Dubuc

Best friends forever

We use both synthetic and RUM testing for Wikipedia. These two ways of testing performance are best friends and help us verify regressions. Today, we will look at two regressions where it helped us to get metrics both ways.
Continue reading “Best friends forever”…
Posted on: October 3, 2018 Last updated on: November 11, 2024 Peter Hedenskog

Mobile web performance: the importance of the device

Let’s explore our web performance data from an angle we haven’t explored before: mobile device type.
Continue reading “Mobile web performance: the importance of the device”…
Posted on: June 22, 2018 Last updated on: November 11, 2024 Gilles Dubuc

Measuring Wikipedia page load times

Here is how we measure and interpret load times on Wikipedia. Let’s also look at what real-user metrics are, and how percentiles work.
Continue reading “Measuring Wikipedia page load times”…
Posted on: January 9, 2018 Last updated on: November 11, 2024 Timo Tijhof
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