Jolla unveils first Sailfish smartphone
Linked by Thom Holwerda on Mon 20th May 2013 11:29 UTC
PDAs, Cellphones, Wireless The day has finally come! Jolla has finally announced the launch device for its Sailfish operating system - and by god this is a looker. It's decidedly different from other phones out there, but it has good specifications and carries a relatively reasonably price tag - EUR 399, and it's up for pre-order today, shipping in the fourth quarter of this year.
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Temcat
Member since:
2005-10-18

That's for sure. But the X compatibility layer may be an additional performance killer, though I know nothing about the design of this layer and may be wrong.

Reply Parent Score: 2

Bill Shooter of Bul Member since:
2006-07-14

No, you're right, You're essentially running everything through Xorg and wayland.

http://wayland.freedesktop.org/xserver.html

Reply Parent Score: 2

pgeorgi Member since:
2010-02-18

But the X compatibility layer may be an additional performance killer

Probably not. As long as the X11 protocol implementation runs close to those buffers, there's no problem.

The main difference of Xwayland to "native" solutions is where it ends up pushing the drawing commands to - in case of Xorg's COMPOSE extension, it send all image data to pixel buffers that are then laid out in a separate step, which is exactly how it'd work with Xwayland.
There's just a different protocol between them to coordinate this, and it's probably more suited than X11, too.

What you don't get is "non composed" graphics, which is only a problem if you try to build a scalable (to many windows) display server in 256KB of RAM or less...

Reply Parent Score: 4

Bill Shooter of Bul Member since:
2006-07-14

From what I can tell, You'd have to have at least a part of X running along with Wayland. I'd wager there would be more of a memory cost than anything, but it sounds like you know more than just looking at the diagrams tells me.

Reply Parent Score: 2