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Thread: Xen VPS or OpenVZ VPS
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08-27-2011, 04:09 AM #1Newbie
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Xen VPS or OpenVZ VPS
Hi everyone,
I would like to know which one is more suitable for running CPU intensive scripts like Rapidleech and Torrentflux.Xen is more costly,would like to know which one is more value for money?
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08-27-2011, 04:29 AM #2Disabled
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Xen would be better as it give more possibility of controlling the resources over each of virtual machines.
OpenVZ would be more suitable if you want to run a cheap vps service which burst the resources for each of the machines located in fro example dedicated server.
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08-27-2011, 04:35 AM #3Newbie
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So,do you recommend Xen? If price is not important,performance is important..
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08-27-2011, 04:42 AM #4Disabled
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Yes, only Xen, as I said openvz is for the cheap virtual solution, xen is for better performance solution. Like for example we use onapp, which is based under xen visualization, so before that we also tried openvz which could not offer that performance what xen has. By the way it also depends what hardware infrastructure you will use. Tell me more how you going to switch the hardware and I will try to help you.
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08-27-2011, 05:41 AM #5Newbie
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I will use Xeon Quad Core processor which i am going to buy from Rapidspeeds of which I am allocated 2 cores. And 4GB RAM.I plan to install mutiple php based scripts on it.I tried with OpenVZ earlier,but it had severe page loading issues.So ,i hope Xen would solve it.
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08-27-2011, 05:56 AM #6Disabled
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Yes it should be fine. Do they offer elastic environment too? This is really what you need to consider for the future stages.
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08-27-2011, 02:49 PM #7Newbie
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I am sorry but i didn't get what you actually meant by "elastic environment".
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08-27-2011, 03:17 PM #8Web Hosting Master
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I bet i could proof you wrong on that statement.. Have done to other providers claiming this and that about Xen and i will do again.
All of this Xen is better performance because its not oversold and blah is just a marketing technique of Xen providers, Xen can and is oversold just as much as openvz, it all depends on the companys management of selling and the hardware of the host node.IT & Hosting Solutions Rotherham - Virtual6 Ltd
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08-27-2011, 03:20 PM #9Web Hosting Master
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SiFuQi.net - Affordable Dedicated Servers in Los Angeles, California
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08-28-2011, 02:43 AM #10Aspiring Evangelist
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08-28-2011, 03:49 AM #11WHT Addict
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Overselling just depends on the provider you choose.
From a technical standpoint here is the lowdown.
Its all about guest loss. Xen has all linux machines run in paravirtualized mode which means the CPU is emulated out to the native kernel your Virtual Machine is running. The hypervisor is also dealing with your memory paging all of this is going to incur guest loss. Even if you are running the VM in VT-D aka HVM Mode the memory management is still being done with the hypervisor.
OpenVZ is more of a jail than a hypervisor all binaries are being executed in the same kernel space as the main OS. Thus, your scripts will be communicating directly with the hardware no hypervisor in the middle once your process is up and running. There may be a small amount of loss when the process starts and OpenVZ checks for things like memory utilization, disk usage etc.
End of the day answer, OpenVZ will significantly reduce guest loss on the CPU side. Now your goal will be finding a provider who has very idle nodes.
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08-28-2011, 11:37 AM #12Newbie
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08-28-2011, 11:42 AM #13Newbie
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08-28-2011, 11:45 AM #14Web Hosting Master
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08-28-2011, 12:09 PM #15Web Hosting Master
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I think to summarise in simple terms, OpenVZ can give you the performance edge matched on identical hardware as a Xen node with identical VPS Specs, but this is only if the OpenVZ VPS is not over allocated (notice I did not say oversold)
Yes its possible to oversell XEN on none solusvm platforms but its FAR less common hence the difference in price, the absolute reality is using basic maths and confirming this through testing of multiple hosts OpenVZ is FAR more likely to be oversold and as a result usually over allocated as a result.
2 Companies I have come across who's OpenVZ nodes perform very well and based on price/performance and testing over a period of time are racksrv.com and vmport.com
In a nutshell, if you buy a cheap OpenVZ node there is a much higher chance your performance will reduce over time due to over allocation of resources by the host, if you buy XEN there is a much better chance what you get is the performance you will keep long term.
And finally, there are no guarantees either way so your best bet is to rely on reviews that include performance results.█ -> INCEPTION HOSTING LIMITED Since 2010!
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08-28-2011, 12:14 PM #16Newbie
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08-28-2011, 01:02 PM #17Web Hosting Master
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I cant find any specific performance reviews for them but lots of praise, just google repidspeeds review.
I would say based on the prices they are charging they don't really have much need to oversell, notice that the OVZ packages are cheaper than Xen though for exactly the same specs (I wonder why).
I should be clear though IMHO overselling on OpenVZ is not a problem but over allocation is, i.e. 150% over sold is probably not even going to be noticeable to customers where as 400% would be bad█ -> INCEPTION HOSTING LIMITED Since 2010!
█ -> I am most active on the lowendspirit hosting forum Come join us!
█ -> PHOENIX USA & THE NETHERLANDS & UK EU
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08-30-2011, 02:58 AM #18Disabled
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Rapidspeeds is one of the best server providers.Just go for them without thinking.Only negative point is they are a bit costly.
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08-30-2011, 04:39 AM #19Aspiring Evangelist
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