![]() This approach accelerates the ability to identify and illustrate dimensional sensitivities and the tolerances that have the most significant contribution to your variation.ĭiscovering the critical-to-quality features to control has never been easier. Unlike simple 1D stack-up analysis or Monte Carlo Simulation, CETOL 6σ pursues a statistical approach employing advanced precise constraint technology, displayed in an intuitive graphical user interface. The user is guided through the tolerance analysis and optimisation process whilst being informed about missing or erroneous data. ![]() This unique method allows you to receive immediate analytical feedback, utilising the easy-to-use modelling, analysis and reporting components. Fixing assembly problems late in the design chain or avoiding them long before production, all while saving money.ĬETOL 6σ enables designers and engineers to easily address multi-dimensional problems, using their native CAD geometry. If you combine that information with screen size and device information you have everything you need to identify issues in near real time.The fully integrated 3D tolerance analysis software tool provides the invaluable insight needed to confidently release designs for manufacture and inform the selection of appropriate tolerances to achieve your variation goals efficiently. This answer I gave has all the relevant metrics you may want to gather and monitor for site performance. ![]() One way to check is to actually monitor this information on your site. It has no affect on your score on PSI as that is calculated each time from "lab data".įield data is there for diagnostics (as RUM are far more reliable and help identify errors automated testing may miss such as an overloaded server, problems at certain screen sizes etc.) I have websites that load in under 2 seconds but they fail the PSI tests.Īre you sure? It may show 2 seconds on automated tests (for desktop) but in the real world how can you know that? It is collected from real visitors to your site. No field data is real world data, also known as RUM (Real User Metrics). This is why I said "similar" scores in the previous paragraph. Lighthouse changed to version 6 scoring earlier this year, to reflect the items that really matter to the end user. You should find that you get similar scores if you compare the desktop tab of PSI report to them as that is unthrottled.Īnother difference (although I am not 100% sure) is that I think those sites are still using Lighthouse version 5 scoring at their core. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them. This is the main reason you will see vastly different scores as they do not apply any form of throttling to the CPU or network speeds. GTmetrix is a free tool to test and monitor your pages performance. all check the desktop version of the site. Mobiles have lower processing power and may be used "on the go" without WiFi. It does both of these to simulate a mid-tier mobile phone on a 4G connection. Page Speed Insights (PSI),uses lighthouse to power it.Īs part of this it uses simulated network throttling to simulate network latency and slower connection speeds (comparable to fast 3G / slow 4G). ![]() Is this because it uses a slower connection to the website? I have read that it's a fast 3G connection? The desktop tab of PSI should be similar but yet again uses different metrics for score that the others do not appear to have updated to (at time of writing). You will always score lower on PSI mobile tests as the other sites do not use throttling. Page Speed Insights (PSI) simulates a mid tier mobile phone on slow 4G connection. Late answer but hopefully this will help people understand the difference.
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