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Site-Speed Topography Remapped

CSS Wizardry

This is an update to my 2020 article Site-Speed Topography. Around two and a half years ago, I debuted my Site-Speed Topography technique for getting broad view of an entire site’s performance from just a handful of key URLs and some readily available metrics. What Is Site-Speed Topography?

Speed 131
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Site-Speed Topography

CSS Wizardry

When first working on a new site-speed engagement, you need to work out quickly where the slowdowns, blindspots, and inefficiencies lie. In a separate sheet—available at the same link as before —I’ve simply graphed the data by page type. Now, let’s move on to gaps between First Contentful Paint and Speed Index.

Speed 292
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In Defence of DOM­Content­Loaded

CSS Wizardry

Honestly, I started writing this article, for no real reason and somewhat without context, in December 2022—over half a year ago! More accurately, DOMContentLoaded signifies that all blocking and defer and type=module code has finished running. before the app’s key functionality is available, with almost half waiting over 3.5s!

Metrics 326
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Running A Page Speed Test: Monitoring vs. Measuring

Smashing Magazine

Running A Page Speed Test: Monitoring vs. Measuring Running A Page Speed Test: Monitoring vs. Measuring Geoff Graham 2023-08-10T08:00:00+00:00 2023-08-10T12:35:05+00:00 This article is sponsored by DebugBear There is no shortage of ways to measure the speed of a webpage. Lighthouse results. One type is called lab data.

Speed 81
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The Speed of Time

Brendan Gregg

The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. Without NMI, some kernel code paths (interrupts disabled) can't be profiled. But I'm not completely sure.

Speed 126
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The Three Cs: Concatenate, Compress, Cache

CSS Wizardry

I began writing this article in early July 2023 but began to feel a little underwhelmed by it and so left it unfinished. What is the availability, configurability, and efficacy of each? ?️ in this article. Connection One thing we haven’t looked at is the impact of network speeds on these outcomes.

Cache 291
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Detect VMware Aria Operations for Logs exploitation with Dynatrace and DQL

Dynatrace

Tracked as CVE-2023-34051 (CVSS score: 8.1), the Aria Operations for Logs vulnerability relates to a case of authentication bypass that could lead to remote code execution. They have made a PoC for the vulnerability available and published the relevant indicators of compromise (IoC). Spoof the IP address of the known worker.

Analytics 266