Re: [Qemu-devel] poor virtio-scsi performance (fio testing)

[Vasiliy Tolstov]

2015-11-25 13:08 GMT+03:00 Alexandre DERUMIER <address@hidden>:
> Maybe could you try to create 2 disk in your vm, each with 1 dedicated 
> iothread,
>
> then try to run fio on both disk at the same time, and see if performance 
> improve.
>

Thats fine, but by default i have only one disk inside vm, so i prefer
increase single disk speed.

>
> But maybe they are some write overhead with lvmthin (because of copy on 
> write) and sheepdog.
>
> Do you have tried with classic lvm or raw file ?

I'm try with classic lvm - sometimes i get more iops, but stable
results is the same =)


-- 
Vasiliy Tolstov,
e-mail: address@hidden