XO-1.5 poor video performance

[mikus]

Compare the performance of http://dev.laptop.org/~cscott/bundles/Bounce-6.xo on os64 (XO-1.5) vs. os10 (XO-1).

The movement of the ball is much jerkier on the XO-1.5. Further, the movement on the screen "pauses" entirely from time to time on the XO-1.5 (but not on the XO-1).

Also, if the cursor is anywhere in the XO-1.5 screen's playing area, it flickers horribly. The amount of time the XO-1.5 cursor is hidden approaches the amount of time the cursor is visible.

There did not seem to be any tickets addressing this particular performance situation. The closest similarities I could find were in #9361 (and maybe #9325).]

[mikus]

To see the horrible cursor flickering on the XO-1.5, compare the behavior of the cursor within the activity area (not the header) of FoodForce2-4.xo on os108 (XO-1.5) vs. os11 (XO-1).

[Quozl]

Mikus, how does this go on os121 now?

[mikus]

Comparing Bounce-7 on XO-1.5 build os121 vs. on XO-1 build os13 (which had been manually upgraded with all available rpms).

The former XO-1.5 poor video performance was no longer present - if anything, each "round" of the activity (with default input) took less time on the XO-1.5 than on the XO-1.

Both systems still had the horrible cursor flickering. Presumably because the XO-1.5 has a more powerful CPU, the cursor flickering on the XO-1.5 was more horrible than on the XO-1.

[mikus]

BTW: The position of the player's "paddle" (i.e., a movable backboard) is controlled by the cursor position. [The player needs to interpose the "paddle" so that the moving ball bounces back, instead of entering the player's end zone.] The 'tracking' of the paddle in response to cursor movement seemed slightly jerkier on the XO-1.5 than on the XO-1.

[Quozl]

So the main issue of poor video performance is fixed, and the only remaining issue is that the Bounce activity has a flickering cursor?

I've moved that issue to sugarlabs.org #1971