Am 12.03.2013 um 09:35 schrieb Stefan Hajnoczi <stefa...@gmail.com>:
> On Mon, Mar 11, 2013 at 02:44:03PM +0100, Peter Lieven wrote: >> I ever since had a few VMs which are very hard to migrate because of a lot >> of memory I/O. I found that finding the next dirty bit >> seemed to be one of the culprits (apart from removing locking which Paolo is >> working on). >> >> I have to following proposal which seems to help a lot in my case. Just >> wanted to have some feedback. > > Hi Peter, > Do you have any performance numbers for this patch? I'm just curious > how big the win is. Hi Stefan, please see my recent email to the list with the final patch. The win is up to 100%. Worst case execution time (whole array is zero) is halved on x86_64. Peter > > Stefan
