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#uml IRC Logs for 2007-11-22

---Logopened Thu Nov 22 00:00:27 2007
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07:20|-|FonduePot [~sarah@87-194-184-122.bethere.co.uk] has joined #uml
07:20<FonduePot-#uml->>hello, anyone here to answer a few questions?
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07:23<FonduePot-#uml->>i'll go ahead and ask and if any of you could answer i'd appriciate it, or if i'm not here please email me fonduelover@hotmail.com
07:23<FonduePot-#uml->>i'm doing an essay on virtualization
07:24<FonduePot-#uml->>and i'm having trouble working out if uml is full virtualization, para-virtualization, operating system level virt or soft partitioning
07:25<FonduePot-#uml->>or other
07:25<FonduePot-#uml->>i need a good reason of why it is so
07:28<FonduePot-#uml->>thanks :)
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08:23<Magotari-#uml->>FonduePot: I know UML ain't soft partitioning.
08:23<Magotari-#uml->>Full virtualization... I don't think so.
08:23<Magotari-#uml->>I think it would be para-virtualization because we are using a modified guest os.
08:24<Magotari-#uml->>We don't emulate a cpu.
08:29<Magotari-#uml->>We ain't os virt, we have many kernels going.
08:29<Magotari-#uml->>So the only thing left is para.
08:29<FonduePot-#uml->>right
08:29<FonduePot-#uml->>but para usually means with a VMM
08:30<FonduePot-#uml->>UML dsoesnthave that either
08:30<Magotari-#uml->>Nope.
08:30<Magotari-#uml->>We don't.
08:30<Magotari-#uml->>We are a part of Linux to Linux.
08:31<Magotari-#uml->>I guess the host kernel kinda might be like a VMM.
08:31<FonduePot-#uml->>does that not have its own special virtualization name?
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08:31<Magotari-#uml->>It does stuff for us which involve toughing real hardware.
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08:32<Magotari-#uml->>I don't think we have a special name.
08:32<Magotari-#uml->>You should talk to jdike.
08:32<Magotari-#uml->>He will be here in a few hours.
08:32<Magotari-#uml->>He designed the thing, he will know for sure. My vote stands for paravirt though.
08:34<FonduePot-#uml->>ok cool thanks
08:34<FonduePot-#uml->>i have to compare uml with xen and vmware
08:35<FonduePot-#uml->>its a technical essay, what interestign things about uml should i look into?
08:36<Magotari-#uml->>http://talkback.zdnet.com/5208-12695-0.html?forumID=1&threadID=36390&messageID=669578&start=0
08:37<Magotari-#uml->>THis page confirm what I said.
08:37<Magotari-#uml->>Let me see...
08:39<Magotari-#uml->>Damn, a hard question.
08:40<Magotari-#uml->>One interesting bit is that UML is a linux kernel.
08:40<Magotari-#uml->>And at the same time it is just a program.
08:40<Magotari-#uml->>Easy to set up.
08:41<FonduePot-#uml->>yeah, its cool, i had to use it on my prev OS coursework
08:41<FonduePot-#uml->>(crashed a lot though.. :P )
08:41<Magotari-#uml->>Strange, I never had a crash unless I was looking for one. :)
08:41<FonduePot-#uml->>well we had to write a kernel module that did all sorts of odd things
08:42<FonduePot-#uml->>so not rerally surprising
08:42<Magotari-#uml->>Yeah. :)
08:43<Magotari-#uml->>I'm really at a loss what to say. I have worked with UML for a long time, but really...
08:44<FonduePot-#uml->>why would you use uml rather than xen/vmware?
08:44<Magotari-#uml->>Vmware is not open source. And in Xen as far as I can tell even the main system you use is a virtual machine. I want to have a real host.
08:45<Magotari-#uml->>Plus Xen ain't quite ready yet.
08:45<Magotari-#uml->>Xen needs a lot of setup, and with uml it's as simple as ./linux
08:45<FonduePot-#uml->>true
08:45<FonduePot-#uml->>but uml is much slower than the other two?
08:45<Magotari-#uml->>Simple, does not require special hardware and fast enough for most tasks.
08:46<Magotari-#uml->>I have never tried vmware, I am an open source zealot. Xen is much faster.
08:46<Magotari-#uml->>But then again with Xen the 'host' is slower than the host of a uml.
08:47<Magotari-#uml->>Not much, but I use uml sometimes, not always.
08:47<FonduePot-#uml->>cool thanks
08:47<Magotari-#uml->>So I like to keep my few % of performance to myself.
08:47<FonduePot-#uml->>i shall get on with writing my essay..
08:47<Magotari-#uml->>One more thing.
08:47<Magotari-#uml->>Please verify everything I say. I make mistakes too.
08:47<FonduePot-#uml->>of course :)
08:47<Magotari-#uml->>I'm not a developer, not really. Just cleanup patches.
08:48<Magotari-#uml->>Feel free to come here anytime for any questions.
08:48<FonduePot-#uml->>i will
08:48<FonduePot-#uml->>i'll stick around and wait for jdike
08:49<Magotari-#uml->>He is here monday to friday. Usually arrives in an hour or two from now.
08:49|-|FonduePot changed nick to FonduePot_Away
08:49<FonduePot_Away-#uml->>ok thanks
08:49<FonduePot_Away-#uml->>hehe bonus point on the essay, talking to the dude who wrote the thing i'm reviewing
08:50<Magotari-#uml->>Good luck.
08:50<Magotari-#uml->>He knows a lot of stuff, he can help you out a lot.
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12:08<FonduePot_Away-#uml->>he still not here?
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12:12<Magotari-#uml->>FonduePot_Away: He has been so late only a few times in the past month or two.
12:13<Magotari-#uml->>Maybe took a day off or something.
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13:17<Magotari-#uml->>FonduePot: If this is urgent you can always email him, the email is public.
13:17<Magotari-#uml->>Pretty easy to find anyway.
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---Logclosed Fri Nov 23 00:00:03 2007