Re: [Qemu-devel] [PATCH v2 00/10] virtio/vring: optimization patches

[Paolo Bonzini <pbonzini@redhat.com>]

On 03/02/2016 13:08, Gonglei (Arei) wrote:
> 22.56%  qemu-kvm                 [.] address_space_translate
>  13.29%  qemu-kvm                 [.] qemu_get_ram_ptr

We could get rid of qemu_get_ram_ptr by storing the RAMBlock pointer
into the memory region, instead of the ram_addr_t value.  I'm happy to
answer any question if you want to do it.

Paolo

>   4.71%  qemu-kvm                 [.] phys_page_find
>   4.43%  qemu-kvm                 [.] address_space_translate_internal
>   3.47%  libpthread-2.19.so       [.] __pthread_mutex_unlock_usercnt
>   3.08%  qemu-kvm                 [.] qemu_ram_addr_from_host
>   2.62%  qemu-kvm                 [.] address_space_map
>   2.61%  libc-2.19.so             [.] _int_malloc
>   2.58%  libc-2.19.so             [.] _int_free
>   2.38%  libc-2.19.so             [.] malloc
>   2.06%  libpthread-2.19.so       [.] pthread_mutex_lock
>   1.68%  libc-2.19.so             [.] malloc_consolidate
>   1.35%  libc-2.19.so             [.] __memcpy_sse2_unaligned
>   1.23%  qemu-kvm                 [.] lduw_le_phys
>   1.18%  qemu-kvm                 [.] find_next_zero_bit
>   1.02%  qemu-kvm                 [.] object_unref