[Bug 19724] elevated demo has a terrible performance

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19724

--- Comment #12 from Artem S. Tashkinov <t.artem at mailcity.com> 2011-03-06 16:59:26 CST ---
Probably it's a bug in X.org server itself or maybe this demo/wine makes an
awful lot of "wrong" system calls.

I've attached strace to a running demo and it shows this:

# strace  -c -p 21109
Process 21109 attached - interrupt to quit
% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
100.00    0.000498           0    135798           sched_yield
  0.00    0.000000           0         8         6 read
  0.00    0.000000           0         2           write
  0.00    0.000000           0         2           getpid
  0.00    0.000000           0         2           ioctl
  0.00    0.000000           0         3           gettimeofday
  0.00    0.000000           0         2           poll
  0.00    0.000000           0         4           rt_sigprocmask
------ ----------- ----------- --------- --------- ----------------
100.00    0.000498                135821         6 total

^CProcess 21109 detached

However it's worth noting that even though I ran the demo with the least
priority (20) I could hardly move any windows, Alt-Tab between them or do
anything beyond watching the demo (mind that I have a quad core CPU and my
system was otherwise completely idle).

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