[kde-freebsd] [CFT] kde-games fix for (invalid shared segment parameter)

[Oliver Heesakkers]

Op ma 12 mrt 2012 12:57:07 schreef Alberto Villa:
> On Fri, Mar 9, 2012 at 10:02 PM, Alberto Villa <avilla at freebsd.org> wrote:
> > Thanks. I think that LooX's patch is part of the solution, but we also
> > need to increase those two limits.
> 
> OK, I figured out what was the problem with Qt 4.7. LooX's patches
> don't work (also, one patches unused code). His problems went away
> because of this fix:
> http://qt.gitorious.org/qt/qt/commit/68f78ba/diffs
> 
> Thus, kern.ipc.shm_allow_removed=1 is completely useless with Qt 4.8.
> 
> LooX: for the record, the PR you referred to was fixed by adding
> XSync() because shmctl(IPC_RMID) was called right after XShmAttach(),
> and X.Org works asynchronously, so XSync() has to be called to be sure
> the segment has already been attached to when marked for removal. It
> took some time for me to understand this.
> 
> Now an update on my Qt 4.8 test: so far I live fine with...
> 
> kern.ipc.shmmni=1024
> kern.ipc.shmseg=1024
> 
> ...set in loader.conf. I still have some repaint problems (window
> titles lag a bit when changing), but I won't give up until they're
> fixed.


OK, kern.ipc.shm_allow_removed=1 is gone and therefore back at 0 where it's 
"supposed" to be.

I'm still on 4.7.4 (and will stay there until 4.8 hits the ports proper, due 
to time constraints). 

Setting shmmni and shmseg doesn't make a difference here.

Applying the patch from that git commit you mention, does. No matter what 
sysctl setting I make, everything now works as it should. I also can't find 
any difference in performance trying the various settings.

I hope you get the remaining 4.8 issue(s) fixed, but until then I can 
recommend fixing the 'blank window'-problem by patching in that commit.

Putting the attached file in ${PORTSDIR}/x11-tookits/qt4-gui/files will do 
just that.
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