[pve-devel] pve-manager and disk IO monitoring

[datanom.net]

On 2016-10-14 11:13, Andreas Steinel wrote:
> Hi Mir,
> 
> On Fri, Oct 14, 2016 at 8:02 AM, Michael Rasmussen <mir at datanom.net> 
> wrote:
>> I use virio-scsi-single exclusively because of the hough performance
>> gain in comparison to virtio-scsi so I can concur to that.
> 
> I just benchmarked it in on a full-SSD-ZFS system of mine and got 
> reverse
> results.
> I used 4 cores, 512 MB-RAM (fio 2.1.11, qd32, direct, libaio) and this
> varies:
> 
> Test                  | sequential 8K | randread 4K | randrw 4K 50/50
> ----------------------+---------------+-------------+----------------
> virtio-scsi           |           53k |         57k |             11k
> virtio-scsi-single    |           35k |         41k |             11k
> virtio-scsi IO/Thread |           29k |         43k |             11k
> virtio-scsi-single IO |           29k |         44k |             11k
> 
> 
> So, what was your test environment? How big was the difference?
> 
Are you running your ZFS pool on the proxmox node?
My benchmarks were made using ZFS over iSCSI.

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