Hello,
now I was able to start the guest vmu with disk virtio, and some of the
tests with disk involvement even improved a bit.
But the test in which a logo is added to the video stream does not
improve. I don't know why the performance is so bad?
Subtest: Reading video locally, adding a logo to the video stream and
then saving the video locally
Host performance: 50%
kvm process in host (top) : 99%
vlc process in vmu (top) : 99%
The output of kvm_stat -1 during the subtest is the following:
efer_reload 0 0
exits 9913473 3994
fpu_reload 393453 4
halt_exits 768222 0
halt_wakeup 497108 0
host_state_reload 3266556 4
hypercalls 508554 0
insn_emulation 5405007 1999
insn_emulation_fail 0 0
invlpg 0 0
io_exits 1879454 0
irq_exits 568541 1995
irq_window 0 0
largepages 0 0
mmio_exits 145028 0
mmu_cache_miss 51455 0
mmu_flooded 40895 0
mmu_pde_zapped 34101 0
mmu_pte_updated 448719 0
mmu_pte_write 858494 0
mmu_recycled 0 0
mmu_shadow_zapped 50590 0
nmi_window 0 0
pf_fixed 494176 0
pf_guest 378754 0
remote_tlb_flush 0 0
request_irq 0 0
signal_exits 1 0
tlb_flush 1076949 1
The guest I've started
has 512 MB RAM, 1 Core 2.2 GHz of the host which is a dual core machine.
Guest settings: RAM: 512 MB
CPU: 1 Core with 2,2 GHz
Tested i386 OS as well as x86_64 with same performance results.
OS: Fedora 10 i386;
2.6.27.21-170.2.56.fc10.i686
CONFIG_HIGHMEM=y
CONFIG_HIGHMEM4G=y
OS: Fedora 10 x86_64;
2.6.27.21-170.2.56.fc10.x86_64
The config file does not contain the HIGHMEM
parameter.
Host settings: OS: Fedora 10 x86_64; 2.6.27.5-117.fc10.x86_64
KVM: Version 74 Release 10.fc10
Best regards,
Steffi
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