> > David assertion that better performance and scalbility can be gained > > with grant table locking and TLB flush avoidance is interesting - as > > 1). The grant locking is going in Xen 4.6 but not earlier - so when running > > on older hypervisors this gives an performance benefit. > > > > 2). I have not seen any prototype TLB flush avoidance code so not know > > when that would be available. > > > > Perhaps a better choice is to do the removal of the persistence support > > when the changes in Xen hypervisor are known? > > > > With patch: [PATCH v5 0/2] gnttab: Improve scaleability, I can get > nearly the same performance as without persistence support. > > But I'm not sure about the benchmark described here: > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/block/xen-blkfront.c?id=0a8704a51f386cab7394e38ff1d66eef924d8ab8
Meaning you weren't able to do the same test? > > -- > Regards, > -Bob -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
