Hi,

ESXi 3.5, havent tested the 4.0 because Areca only has a beta driver for it.

- Valtteri Kiviniemi

Eric Greer kirjoitti:
> vmware server or esxi?
> Eric
> 
> 
> On Thu, Aug 27, 2009 at 5:35 PM, Valtteri Kiviniemi <
> [email protected]> wrote:
> 
>> Hi,
>>
>> You are correct. But I'm just saying my opinion here, and I think that
>> Xen is better.
>>
>> VMWare ESXi is maybe a bit more user friendly than XenServer 5.5, but I
>> don't still understand why ESXi is so much slower. I'am using both of
>> them because my company sell's virtual servers and some customers want
>> VMWare ones.
>>
>> I have identical hardware on all machines but im still seeing 30-40%
>> more performance on Xen virtual servers than on VMWare. Dont know why,
>> but disk i/o is way better on Xen than VMWare.
>>
>> - Valtteri Kiviniemi
>>
>> Eric Greer kirjoitti:
>>> If everyone wants to get technical with all of this nonsense... you can
>> run
>>> srcds just fine on a VPS - as long as there is enough power.
>>> Xen Quite simply adds another layer hardware layer that data must pass
>>> through.  However, we're talking nanoseconds here people.  Not like
>> another
>>> hop on your way to chicago - another *virtual* device on the way to the
>>> hardware and back.  It's like nothing.  VMWare ESXi adds a few more
>> layers
>>> as it passes through more virtual devices... but it still does not
>> matter.
>>> A VM can be provisioned with plenty enough power to do any source server
>>> just fine. You just have to give it plenty of dedicated resources.
>>>
>>> I feel like people start taking emotions into computing at some point.
>>>  There aren't any - its all benchmarks and numbers.  If the system can
>> CPU
>>> bench some number has memory available and bandwidth... it can run the
>>> server - simple as that.
>>>
>>> A VPS is generally considered 'weaker' because it can share resources
>> with
>>> other VMs - but it doesn't have to.  If for some reason you wanted to
>> give
>>> root shell access to a game server customer, you could VM them.  Yes,
>> theres
>>> a good 100Mb of memory overhead for the hypervisor, but it can be worth
>> it.
>>> Eric
>>>
>>>
>>> On Thu, Aug 27, 2009 at 12:05 PM, Valtteri Kiviniemi <
>>> [email protected]> wrote:
>>>
>>>> Hi,
>>>>
>>>> You should probably read the facts before posting. Ofc. its not exactly
>>>> the same, but if you know nothing about Xen you would know that the
>>>> performance difference between (for example 2.6.18-xen and 2.6.18
>>>> kernels) are so small, that you cant even notice it.
>>>>
>>>> Maybe with ESXi you have greater performance difference compared to
>>>> bare-metl but not with xen.
>>>>
>>>> - Valtteri Kiviniemi
>>>>
>>>> Kveri kirjoitti:
>>>>> 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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