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

[peng_wp]

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?

[Peter_W_Intel]

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