[pve-devel] Count monthly traffic

Dietmar Maurer dietmar at proxmox.com
Wed Apr 17 16:39:11 CEST 2013


> >> 3000 VMs all with 32 nics seems unrealistic to me.
> >
> > BTW, we have several users with >500VMs, so I guess we can easily reach that
> limit.
> 
> Sure but those won't have 32 NICs. So if we go the way one file per NIC.
> We might have 3800 files for 3000 VMs. (800 VMs with 2 Nics so they have
> 1600 files and the rest with just one nic)
> 
> Updating those works pretty good even on IDE and even without rrdcached.
> It generates nearly no load at all just 10% I/O Wait. But running so many VMs
> shouldn't be done on IDE anyway.

I am confused now. If we have 500 VMs, we have at least 500 rrd files (currently). If you
add one additional file per VM we have 1000 rrd files. If we assume a VM has 2nics on average
we are at 1500 files...

You wrote that the benchmark does not work at all with 3000 files, so I assume it also
generates serious load with 1600 files.




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