Thursday, 27 June 2013

Re: Ubuntu graphic stack roadmap update

2013/6/27 Oliver Ries <[email protected]>:
>> And to that end, do you have documented comparisons of performance
>> between native X and XMir (especially for non-Unity stacks)? The video
>> demo does appear to be measuring it, but I'd be curious to see the
>> before/after results in some tabulated form.
>
>
> We are about to release our benchmark results as part of the public Ubuntu
> QA dashboard. We will inform the community once the data is available.

This is currently an issue for Lubuntu, because, if i understand
correctly, we are going to replace an X + openbox (without composite)
with a Mir + XMir + composite windows manager (?). Considering the
very bad performance on some of our target hardware running under a
composite manager, I'm quite worrying about the performance
difference. The difference between Unity + X and Unity + XMir + Mir
may not be so different, I can't say the same for Lubuntu.

However, Steve Langasek confirmed on a previous mail that X will
remain for 14.04 for the time frame of the LTS, and I hope it will
still be the case with this change. We currently plan to ship X only
by default for 13.10 and 14.04 for Lubuntu, with eventually an option
to test XMir, to prepare the future.

Regards,
Julien Lavergne

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