Are you using also xen or another virtual enviroment?

Kveri schrieb:
> believe me, if you have paravirtualized enviroment you don't have  
> equal performance than on bare-metal. Paravirtualization adds another  
> layer, so does overhead. Maybe performance in CSS, but I doubt about it.
>
> I'm using full VT on 4x quad core xeons with 16gb ram and providing  
> 1000fps 1.6 servers (yes, stable 1000fps, kernel self-pached with RT  
> and some HZ tweaks), CSS servers with 100 ticrate and and some tf2  
> servers without any problems.
>
> Kveri
>
> On 25.8.2009, at 20:52, Valtteri Kiviniemi wrote:
>
>   
>> Hi,
>>
>> We are running multiple TF2 servers with Xen 3.4.1 paravirtualized.
>> Performance is exactly the same as bare-metal, maybe even better. Only
>> downside is that you need xen-patched kernel so to get most stable and
>> working environment you have to use the default 2.6.18.8-xen kernel.
>> Ofc. you can compile a 1000hz domU kernel like we have.
>>
>> There is also pv_ops kernels which are included in the xen-unstable
>> tree. They are the normal kernel.org kernel with patches that make it
>> suitable for Xen hypervisor.
>>
>> In my opinion Xen is the best solution for gameserver virtualization
>> because it is the fastest. ESXi virtuals are not paravirtualized so  
>> they
>> have slower disk i/o and network performance. They also use more  
>> resources.
>>
>> If you want same performance as bare-metal you need paravirtualized
>> guest operating systems and Xen is the best solution for that.
>>
>> We have a physical 2 x 2.5GHz Quad-core Xeon machine with 16 GB ram  
>> and
>> a ARECA ARC-1220 raid controller with RAID10 array.
>>
>> We are also running many other virtuals on the same machine without  
>> them
>> affecting the gameserver virtual performance.
>>
>> With Xen you can for example assign 4 physical cores to the gameserver
>> virtual and use the other 4 for other virtuals.
>>
>> - Valtteri Kiviniemi
>>
>> Daniel Worley kirjoitti:
>>     
>>> I don't have exact numbers, but I've run srcds both natively and  
>>> under ESXi
>>> on a PowerEdge server.  Under both I was able to run multiple  
>>> instances, no
>>> issues.  I saw no difference in performance playing on the servers,  
>>> but once
>>> again I don't have numbers to back it up.
>>>
>>> On Tue, Aug 25, 2009 at 11:07 AM, Claudio Beretta <[email protected]
>>>       
>>>> wrote:
>>>>         
>>>> HiI'd like to know your experiences with running srcds in a  
>>>> virtualized
>>>> environment. Searching mail-archive for past discussions about  
>>>> this subject
>>>> didn't provide a reliable conclusion to this topic.
>>>> From what i understand, only hypervisors such as ESXi, XEN (and  
>>>> maybe
>>>> Hyper-V) are suitable to be used for game servers because they  
>>>> should be
>>>> the
>>>> ones that introduce the lower overhead and response delay.
>>>> Having a minor performance loss is fine, as long as no noticeable  
>>>> jitter is
>>>> introduced or ping is increased.Has anyone had a chance to test  
>>>> these
>>>> products and compare srcds performance on the same machine when  
>>>> virtualized
>>>> and when running on the bare metal?
>>>> Provided that the machine can handle it, do you know if it is  
>>>> possible to
>>>> virtualize tickrate100, 1000fps CSS servers? Not that i want to do  
>>>> that,
>>>> but
>>>> if it can be done.. anything can be done :-)
>>>>
>>>> best regards,
>>>> Claudio
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>>     
>
>
>   


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