Re: PowerPoint performance degrade greatly when logon on through rdesktop to winxp, and when lotus notes is running.

[Avi Kivity <avi@redhat.com>]

On 07/05/2011 12:40 PM, ya su wrote:
>       I am using qemu-kvm, cli as the following:
>
> qemu-system-x86_64 -drive
> file=test-notes.img,if=virtio,cache=none,boot=on -net
> nic,macaddr=00:00:00:11:22:88,model=virtio -net tap -m 1024 -vnc :3
>
>       I open powerpoint 2007, and drag a rectangel, it moves very
> slowly.  it must meet the following conditions to produce the same
> result:
>       (1) lotus notes is running.
>       (2) logon through rdestktop.
>
>       if I connect through vnc, it will not happen; if I don't run
> louts notes, it will not happen. if I change to 2 vcpus as the
> following cli, it will respond much better.
>
> qemu-system-x86_64 -drive
> file=test-notes.img,if=virtio,cache=none,boot=on -net
> nic,macaddr=00:00:00:11:22:88,model=virtio -net tap -m 1024 -vnc :3
> -smp 2
>
>        I first doubt that maybe it's from windows internal problem, so
> I tested on a uni-processor PC, but It looks good.
>
>        I also run qemu-kvm with -no-kvm, it produce the same results.
>
> I run kvm-stat when dragging a rectangle, the output is as the following:
>
> exits                                      4650520   24645
>   insn_emulation                             3508180   15158
>   host_state_reload                          1273409   13999
>   io_exits                                   1031465   13504
>   irq_injections                              179104    2629
>   hypercalls                                  131481    2084
>   halt_wakeup                                  33589     495
>   halt_exits                                   33584     495
>   irq_exits                                   105020     237
>   pf_fixed                                    449879     106
>   fpu_reload                                   16852      54
>   mmio_exits                                   46426       1
>   mmu_cache_miss                                9985       0
>   mmu_shadow_zapped                            11736       0
>   signal_exits                                  2145       0
>   remote_tlb_flush                               251       0
>
>       it seems that qemu-kvm is emulating some instruction which take
> much cpu resource, but I don't know how to find the emuated
> instructions.
>

Please follow the instructions in http://www.linux-kvm.org/page/Tracing 
to find out which instruction is executed.

-- 
error compiling committee.c: too many arguments to function