[libvirt] [Qemu-devel] strange behavior when using iotune

[Vasiliy Tolstov]

2014-11-24 17:18 GMT+03:00 Andrey Korolyov <andrey at xdel.ru>:
> I am not sure for friendliness of possible dd interpretations for new
> leaky bucket mechanism, as its results can be a little confusing even
> for fio (all operations which are above the limit for long-running
> test will have 250ms latency, putting down score numbers in most
> popular tests like UnixBench), also w/o sync options these results are
> almost meaningless. May be fio with direct=1|fsync=1 (for fs) will
> give a more appropriate numbers in your case.


My fail. I'm forget to add iflag=direct to dd. Now all fine i get is
around 20 MB/s which compared to 5000 iops.
Thanks.

-- 
Vasiliy Tolstov,
e-mail: v.tolstov at selfip.ru
jabber: vase at selfip.ru