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xen-users
Re: [Xen-users] Performance monitoring for Xen
Mark Williamson wrote:
>
>> I m in a process to monitorperformance of Xen. If you know any or few
>> answers to the following query kindly let me know that :-
>>
>> 1. Can i specify multiple CPU to Xen server.
>
> Xen supports a multiprocessor host machine, and guests can have multiple
> virtual processors too. The guest processors will be scheduled across the
> available physical processors.
>
>> 2.Can i use multiple instances of the same operating system on different
>> clients. Say i have installed Window-XP on my Xen server can i make use
>> of
>> same Windows at two different location.
>
> I'm not sure what you mean by this? You can connect remotely to the WinXP
> guest using VNC, and there's no reason you couldn't connect from multiple
> locations but there'd still only be one virtual display so they'd have to
> share (just like if you VNCed to a real machine).
>
> Or you could just install multiple independent copies of Windows.
>
>> 3. How many operating system can be installed on a Xen server.
>
> The only limit to how many installed guests you can have is how much disk
> space you have available.
>
> The limit for how many guests can be running at a given time is usually
> memory: guests have a "hard" allocation of memory and don't get swapped by
> Xen, so you can only start another guest if there's enough free memory to
> hold it. Obviously depending on the work you want the guests to do you'll
> also need to make sure there's enough CPU time to go around...
>
> I know of people having started over 100 very small guests on a large
> machine,
> although I don't imagine any of them were doing anything useful! This may
> have been on x86_64. I don't know if the limits are likely to be
> different
> for 32-bit and 64-bit Xen.
>
>> 4. Suggest the best way to monitor the performance of my Xen Server.
>> Right
>> now what i have done is written perl Scripts for Windows and Linux. For
>> windows i m using perfmon and for Linux Sans.
>
> There are various user interfaces. If you can use a recent Fedora, RHEL5
> or
> CentOS 5 for the dom0 then you could use virt-manager. Or you could try
> to
> install virt-manager on your distro of choice. Other projects are Argo
> and
> Xenmon, but I'm not sure what state they're in. You could also check out
> Enomalism, which gives you a pretty web GUI.
>
> Finally, the XenSource commercial products (and Xen-based commercial
> products
> from other vendors) provide their own ways of monitoring performance.
>
> Oh, and there's the xm top command, which is like "top" for virtual
> machines :-)
>
> Cheers,
> Mark
>
> --
> Dave: Just a question. What use is a unicyle with no seat? And no pedals!
> Mark: To answer a question with a question: What use is a skateboard?
> Dave: Skateboards have wheels.
> Mark: My wheel has a wheel!
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
Hi Mark Thanks
Still i have few queries left ..
1. Can i specify the number of CPU to the clients also. For e.g two CPU to
WindowXP and one to Fedora in Xen Server.
2. What parameter i should look for while i m doing performance monitoring .
For instance i m looking into CPU utilization and response time.
--
View this message in context:
http://www.nabble.com/Performance-monitoring-for-Xen-tf4140474.html#a11918054
Sent from the Xen - User mailing list archive at Nabble.com.
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