libx11 is missconfigured and slow window creation time
Bug #681939 reported by
Cedric BAIL
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
libx11 (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Somehow compose cache is disable in libx11. This trigger a slow path in libx11 _XimParseStringFile function.
It could be easily detected by valgrind tool callgrind running on any X application with more than 500 000 calls to getc comming from _XimParseString
See that mail thread for a full explanation of that issue and how to fix it:
http://
It impact all Ubuntu version I know since 2009.
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Fixed in lucid - see bug https:/ /bugs.launchpad .net/ubuntu/ +source/ libx11/ +bug/221065