[Xcb] XPutImage and context switches / roundtrips?

Vincent Torri vtorri at univ-evry.fr
Wed Sep 10 14:10:34 PDT 2008

On Wed, 10 Sep 2008, Peter Harris wrote:

> Clemens Eisserer wrote:
>> Is there anything that can be done against this?
>> Maybe increasing the buffer to something like 32kB, I guess this size
>> would be perfect for my use-case - but I have read somewhere that the
>> size is fixed to 4kb and can not be chaged at run-time, not even at
>> compile-time (which would be useless for me anyway).
> It's the size of the OS's socket buffer that matters, not the size of
> XCB's internal buffer, really.

actually, when i compare evas engines with xlib and xcb, xlib is faster. 
But when I decrease xlib buffer size to 4KB, then, they have almost the 
same speed.


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