Hi Avi, > > > > so, setup with > > > > opcontrol --deinit; modprobe oprofile timer=1; opcontrol --start > > > > > > > > > Use 'opreport -l'. Make sure your qemu isn't stripped. All VM's are in paused state: top - 22:08:15 up 2 days, 12:18, 8 users, load average: 0.12, 0.19, 0.14 Tasks: 185 total, 1 running, 182 sleeping, 2 stopped, 0 zombie Cpu(s): 0.5%us, 1.7%sy, 0.0%ni, 97.8%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8196468k total, 4166468k used, 4030000k free, 76044k buffers Swap: 39780320k total, 70232k used, 39710088k free, 475876k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 9587 root 20 0 1145m 1.0g 1944 S 6.6 13.1 0:28.78 qemu-system-x86 9525 root 20 0 1143m 1.0g 1900 S 6.3 13.1 0:27.26 qemu-system-x86 9305 root 20 0 1143m 1.0g 1900 S 5.0 13.1 0:22.86 qemu-system-x86 **** opreport -l --symbols | less CPU: CPU with timer interrupt, speed 0 MHz (estimated) Profiling through timer interrupt samples % image name app name symbol name 418814 98.5250 no-vmlinux no-vmlinux (no symbols) 1228 0.2889 qemu-system-x86_64 qemu-system-x86_64 main_loop_wait 888 0.2089 libpthread-2.8.so libpthread-2.8.so __read_nocancel ... **** opreport -l /opt/kvm-86-vnc-patch.oprofile/usr/bin/qemu-system-x86_64 --symbols | less CPU: CPU with timer interrupt, speed 0 MHz (estimated) Profiling through timer interrupt samples % image name symbol name 1036 52.2441 qemu-system-x86_64 main_loop_wait 155 7.8164 qemu-system-x86_64 dynticks_rearm_timer 85 4.2864 [vdso] (tgid:9525 range:0x7fff565fe000-0x7fff565ff000) (no symbols) 77 3.8830 qemu-system-x86_64 qemu_get_clock 63 3.1770 qemu-system-x86_64 .plt 59 2.9753 qemu-system-x86_64 host_alarm_handler 57 2.8744 qemu-system-x86_64 qemu_shutdown_requested 51 2.5719 [vdso] (tgid:9305 range:0x7fff3d9ff000-0x7fff3da00000) (no symbols) 49 2.4710 qemu-system-x86_64 sigfd_handler 47 2.3701 qemu-system-x86_64 tap_can_send 41 2.0676 [vdso] (tgid:9587 range:0x7ffffabfe000-0x7ffffabff000) (no symbols) 38 1.9163 qemu-system-x86_64 kvm_mutex_lock 36 1.8154 qemu-system-x86_64 kvm_main_loop 31 1.5633 qemu-system-x86_64 get_clock 29 1.4624 qemu-system-x86_64 qemu_bh_poll 24 1.2103 qemu-system-x86_64 io_thread_wakeup 23 1.1599 qemu-system-x86_64 qemu_event_read 19 0.9581 qemu-system-x86_64 qemu_powerdown_requested 18 0.9077 qemu-system-x86_64 kvm_mutex_unlock 12 0.6051 qemu-system-x86_64 qemu_kvm_notify_work 12 0.6051 qemu-system-x86_64 qemu_reset_requested 11 0.5547 qemu-system-x86_64 e1000_can_receive 6 0.3026 qemu-system-x86_64 slirp_is_inited 3 0.1513 qemu-system-x86_64 qemu_notify_event 1 0.0504 qemu-system-x86_64 qemu_set_fd_handler2 I do not understand, why only ~1036 kvm-samples produces a load of (in sum) 18% ... I'm not able to convert vmlinuz to vmlinux (for profiling the kernel ...) on my old FC9 - sorry. Because I cannot update my old fc9, I will move to CentOS later - and hopefully get the kernel profiling running. May these oprofile-information will help you to track down the problem - if not, I try to came back soon with kernel-profiling information on CentOS. regards Danny -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
