Comments on: A very quick performance primer /2025/12/a-very-quick-performance-primer/ Developer resources for the X-Plane flight simulator Mon, 05 Jan 2026 13:00:21 +0000 hourly 1 https://wordpress.org/?v=6.8.3 By: TokTok /2025/12/a-very-quick-performance-primer/#comment-43179 Tue, 23 Dec 2025 22:57:57 +0000 https://developer.x-plane.com/?p=41183#comment-43179 In reply to Sidney Just.

yeah, I knew the v-sync, (or other frame capping?) But we did not find any of that here or in the two other ones

]]> By: Sidney Just /2025/12/a-very-quick-performance-primer/#comment-43176 Mon, 22 Dec 2025 17:21:02 +0000 https://developer.x-plane.com/?p=41183#comment-43176 In reply to TokTok.

NB: I edited your comment to remove the Discord link since they aren’t great for permanence, sorry!

In general, frame time measures all of the overhead from the system. Probably the biggest contributor might be V-Sync, since the extra time spent waiting shows up under frame time. Apart from that, you also have driver and general system overhead. The column doesn’t differentiate the cause, it’s just there to point out that it is outside of X-Plane.

]]> By: TokTok /2025/12/a-very-quick-performance-primer/#comment-43170 Sun, 21 Dec 2025 14:50:47 +0000 https://developer.x-plane.com/?p=41183#comment-43170 Nice write-up for people who did not already know this part. Still leaves me curious why in some cases frame time is not a couple of ms higher but 8-10 times as high as cpu/gpu like in some screenshots seen online.

]]> By: Ulrich /2025/12/a-very-quick-performance-primer/#comment-43157 Fri, 19 Dec 2025 21:29:09 +0000 https://developer.x-plane.com/?p=41183#comment-43157 This was a very enlightening post; now I better understand the numbers being displayed.

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