Strange!

I hadn't heard of or experienced any disk problems with ESXi yet.  Maybe I
just haven't loaded it down when I'm using it enough to notice.

Eric


On Thu, Aug 27, 2009 at 5:58 PM, Valtteri Kiviniemi <
[email protected]> wrote:

> 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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