vtune profile qemu (modified), but "The application uses the notification signal for its own needs"

vtune profile qemu (modified), but "The application uses the notification signal for its own needs"

Hi.I tried to use vtune (Intel VTune Amplifier XE 2011 Update 9 (build 229127)) to profile a modified qemu on linux (kernel version: 3.3.7). but vtune reported: "vtune amplifier The application uses the notification signal for its own needs", and vtune thoughts the profile was over, but in fact it had profiled nothing.I also used vtune to profile qemu which was not modified, and it could work well.In our modified qemu, we have used the SIGRTMIN, SIGRTMIN+1,SIGRTMIN+2,SIGRTMIN+3,SIGRTMIN+4.Dose this mean the signals above vtune also uses? and how can I use vtune to profile our modified qemu?

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For more complete information about compiler optimizations, see our Optimization Notice.

Possibly interruptionsare used byVTune, I guess.
Can you use hotspots instead of lightweigtht-hotspots? It profiles your qemu.exe in user-mode.

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