[pve-devel] Count monthly traffic

Stefan Priebe s.priebe at profihost.ag
Wed Apr 17 21:12:29 CEST 2013


Am 17.04.2013 16:39, schrieb Dietmar Maurer:
>>>> 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...

Sorry i was just testing the netin / netout part. A main point seems to 
be the rows in file - so my tests don't cover this scenario i was just 
testing 32 in/out values vs. 1 file per nic for in/out.

But right now i would prefer the API query SNMP like way anyway.

Stefan


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