[PVE-User] Proxmox with ceph storage VM performance strangeness

Alwin Antreich a.antreich at proxmox.com
Wed Apr 22 17:03:07 CEST 2020


On Wed, Apr 22, 2020 at 12:43:58PM +0200, Rainer Krienke wrote:
> hello,
> 
> there is no single workload, but a bunch of VMs the do a lot of
> different things many of which do not special performance
> demands. The VMs that do need speed are NFS Fileservers and SMBservers.
> 
> And exactly these servers seem to benefit from the larger block size.
> The two I tested mostly on are fileservers.
I am curious, so your setup is a striped LVM with what filesystem on top?

> 
> Aside from  bonnie++ I also tested writing and reading files especially
> many small ones. This also works very good and a fact that at the
> beginning of my search was not true is now: The proxmox/ceph solution is
> faster and in some disciplines much faster than the old xenbased with
> ISCSI storage as a backend.
Nice to hear. :)

--
Cheers,
Alwin



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