Hi Jason, > Jason Wang <jasowang <at> redhat.com> writes: > > Hi all: > > This series tries to add basic busy polling for vhost net. The idea is > simple: at the end of tx/rx processing, busy polling for new tx added > descriptor and rx receive socket for a while.
There were several conciens Michael raised on the Razya's attempt to add polling to vhost-net ([1], [2]). Some of them seem relevant for these patches as well: - What happens in overcommit scenarios? - Have you checked the effect of polling on some macro benchmarks? > The maximum number of time (in us) could be spent on busy polling was > specified ioctl. Although ioctl is definitely more appropriate interface to allow user to tune polling, it's still not clear for me how *end user* will interact with it and how easy it would be for him/her. [1] http://thread.gmane.org/gmane.linux.kernel/1765593 [2] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/131343 -- Sincerely yours, Mike.
