[Trac #620] X Window System startup is slow.

Zarro Boogs per Child bugtracker at laptop.org
Thu Dec 28 14:37:31 EST 2006


#620: X Window System startup is slow.
-----------------------------+----------------------------------------------
 Reporter:  jg               |        Owner:  jg     
     Type:  defect           |       Status:  new    
 Priority:  normal           |    Milestone:  BTest-3
Component:  x window system  |   Resolution:         
 Keywords:  performance      |  
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Comment (by ajax):

 Building a monolithic X server is pretty much out of the question.  Not
 least because the code (let alone build system) to operate the server
 monolithically is simply not there anymore...

 Fortunately, modularity does not appear to be the startup performance
 problem.

 Assuming the units on the numbers in the systemtap log in #602 are
 milliseconds, the executive summary is, roughly:

 280ms for DSO load to get to main()
 800ms to get to InitOutput()
 280ms to get to PCI scan
 240ms for module init
 480ms for video and input init
 absurd amount of evdev /dev traffic
 2.5 seconds or so for xkbcomp

 So about 5 seconds total.

-- 
Ticket URL: <http://dev.laptop.org/ticket/620#comment:1>
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