[Qemu-devel] Re: [PATCH 0/6] qemu-kvm: Introduce bit-based phys_ram_dirty, and bit-based dirty page checker.

[Avi Kivity]

On 03/16/2010 12:53 PM, Yoshiaki Tamura wrote:
> Experimental results:
> Cond1: 1.9 ~ 61 times speed up
> Cond2: 1.9 ~ 56 times speed up
> Cond3: 1.9 ~ 59 times speed up
> Cond4: 1.7 ~ 59 times speed up
>    

Impressive results.  What's the typical speedup?  Closer to 1.9 or 61?

Note the issue with the cache accesses for set_dirty() is only 
applicable to tcg, since kvm always updates the dirty bitmap in a batch 
(well, I/O also updates the bitmap).

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