On 2015-04-07 08:19, Valentine Sinitsyn wrote: > On 07.04.2015 11:13, Jan Kiszka wrote: >>>> It is, at least 160 cycles with hot caches on an AMD A6-5200 APU, more >>>> towards 600 if they are colder (added some usleep to each loop in the >>>> test). >>> Great, thanks. Could you post absolute numbers, i.e how long do A and B >>> take on your CPU? >> >> A is around 1910 cycles, B about 1750. > It's with hot caches I guess? Not bad anyways, it's a pity I didn't > observe this and didn't include this optimization from the day one. Yes, that is with the unmodified benchmark I sent. When I add, say usleep(1000) to that loop body, the cycles jumped to 4k (IIRC). BTW, this is the Jailhouse patch: https://github.com/siemens/jailhouse/commit/dbf2fe479ac07a677462dfa87e008e37a4e72858 Jan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
