I really think the fact remains that the guest dom he's running is a
bit overloaded; and running non-optimized settings.

Namely the I/O is probably killing you (with whatever writes it may be
achieving); Either run critical write portions in a RAM disk, optimize
your guest, or run in full hardware. You have other options, but
ultimately you're doing too much with one guest dom given the load
you've displayed.

~B



On Fri, Sep 9, 2011 at 12:19, John <[email protected]> wrote:
> We actually see very good performance here with optimized (using PV or HVM
> w/stubdoms and GPLPV, with various kernel and configuration tweaks) Xen
> setups, to within a small percentage of bare-metal. What hypervisor
> technology and speeds of machines have you been testing with? Are you
> allocating dedicated HT cores to each guest?
>
> -John
>
> On 9/9/2011 12:11 PM, Darren M wrote:
>>
>> I've noticed on cPGS users' machines that VMs / VPS of all flavors
>> really struggle when it comes to running game servers well, even with a
>> VM given 100% of all the resources of the dedicated box (for testing.) I
>> strongly suggest to our users to save the VPS/VMs for mail or NS and let
>> the game boxes be dedicated. Nothing taxes hardware in quite the same
>> way that is also as prefectly monitored by so many people at the same
>> time as game servers ^_^
>>
>> ~darren
>>
>>
>> On Fri, 2011-09-09 at 14:41 -0400, Andrew Caron wrote:
>>>
>>> Dont use a VM and with centos you need to build a custom kernel to have
>>> the
>>> fps stable on the servers. You have 3 cores, but your average load is 8,
>>> that means there is always something in queue to the CPU. Which also
>>> causes
>>> lag, your going to need to reduce the amount of servers, or get a better
>>> dedicated box.
>>>
>>> On Fri, Sep 9, 2011 at 2:37 PM, Peter
>>> Reinhold<[email protected]>wrote:
>>>
>>>> Hi all,
>>>>
>>>> This question is not directly related to srcds, but may be more of a
>>>> Linux
>>>> question, but since there are a lot of experienced gameserver sysadms
>>>> here,
>>>> it seemed the logical place to ask. :)
>>>>
>>>> First off, my setup, so that is in place
>>>>
>>>> Running CentOS 5.6 in a ESXi VMWare, PAE kernel, three cores, 4GB RAM
>>>> (I'm
>>>> running a 1:1 on actual cores/virtual cores, so i'm not overextending
>>>> the
>>>> CPU)
>>>>
>>>> Two 24 man TF2 servers, and 5 forked L4D servers on this VM, nothing
>>>> else.
>>>>
>>>> On to the problem:
>>>> I've been hearing complaints from my players, and have experienced
>>>> myself,
>>>> small lag-stutters from time to time, where the entire server seems to
>>>> stutter for at second or two, and then just continue.  Pings stay
>>>> normal,
>>>> people aren't kicked or any such problems.
>>>>
>>>> So, i've started debugging (mostly monitoring with dstat and htop), and
>>>> have found out something which I think is very strange, and may or may
>>>> not
>>>> be related to the issue at hand.
>>>>
>>>> TD2 servers have been more or less full the entire time (22-24 players
>>>> at
>>>> all times of monitoring), L4D have had 1-2 forks populated as well.
>>>>
>>>> Anyway, I am seeing load spikes, where load jumps from 1.5 to 3.5 in a
>>>> single second tick in dstat, but the strange thing, there are no other
>>>> metric that jumps at the same time, that could explain the large jump in
>>>> load (I'm monitoring CPU, Mem, diskIO and process count, and there are
>>>> no
>>>> odd jumps there, no)
>>>>
>>>> Furthermore, this evening i'm seeing loads in the 8-9 range, but CPU
>>>> utilization (usr/idle/wait), memory use, disk IO is the same as it was
>>>> this
>>>> afternoon, and its more or less the same number of players online (Give
>>>> or
>>>> take 5-7 players), and servers are as playable as they always are.
>>>>
>>>> Log files from dstat can be supplied, if anyone deems necessary.
>>>>
>>>> Does anyone know if this is srcds related, or my system thats just wonky
>>>> (maybe reporting wrong load values?), or, possible know some metric that
>>>> contribute to load, that I haven't monitored yet?
>>>>
>>>> Thanks in advance :)
>>>>
>>>>
>>>> /Peter
>>>>
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