Hi Milan, On 10 April 2017 at 19:30, Milan Broz <gmazyland@xxxxxxxxx> wrote: Thank you for the reply. > Well, it is good that there is no performance degradation but it > would be nice to have some user of it that proves it is really > working for your hw. I have been able to get access to a hardware with IV generation support a few days back. The hardware I was having before did not have IV generation support. Will be able to come up with numbers after making it work with the new one. > FYI - with patch that increases dmcrypt sector size to 4k > I can see improvement in speed usually in 5-15% with sync AES-NI > (depends on access pattern), with dmcrypt mapped to memory > it is even close to 20% speed up (but such a configuration is > completely artificial). > > I wonder why increased dmcrypt sector size does not work for your hw, > it should help as well (and can be combiuned later with this IV approach). > (For native 4k drives this should be used in future anyway...) I think it should work well too with backward incompatibility. Thanks, Binoy -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
