What is Digg?46 Comments
- sirber, on 05/22/2008, -0/+27The site is virtually not loading...
- TheMachine1, on 05/22/2008, -0/+17Great a technology story on Digg and the server dies.
- ladon86, on 05/22/2008, -0/+12Everyone on these comments has made virtually the same joke.
- Envark, on 05/22/2008, -0/+11Bare-metal hypervisor is the only way to go...
- Devroush, on 05/22/2008, -2/+12and there goes their credibility
- dhonn, on 05/22/2008, -4/+13The site was virtualized on 8mb of ram.
- barichardson, on 05/22/2008, -0/+8Why dig him down?...he is right.
There is just no other solution that can touch a bare-metal hypervisor when you are in an enterprise environment and need fault tolerance, load balancing, and increased power management. Nothing beats Vmware ESX, but Citrix XenSource is catching up pretty quickly. - JasonCox, on 05/22/2008, -2/+10Feature Request: Digg Algorithm V3.0:
-Checks to see if website is down (and if is down, does DuggMirror have it cached?) before putting it on the front page - nwmcsween, on 05/22/2008, -2/+7There is a place for all these virtualization techniques.
Xen - is what you would call a hypervisor kernel it has its own kernel which is small and another which is a modifyed linux kernel for the backend drivers and yet another that is for the frontend (aka the vps) this has alot of problems first the cache thrashing this will casue even with large L2 cache and context switching.
OpenVZ - This is like freebsd jails or an extremely enhanced chroot it runs one kernel instead of xen's 3 or kvm's 2 BUT you cannot run anything else but the host kernel.
KVM - My favorite at this time is a linux dependent virtualization solution it runs one kernel for the host and one kernel for the guest (I.E winxp freebsd, etc) development on it is progressing at a nice pace things like the ballon driver (puts memory pressure on guests when memory is scarce) shared pages (share application pages that are identical meaning if person a runs apache and so does person b with identical lib,s binaries it will share it between the guests saving ram) this exists with Xen BUT KVM is in the kernel tree and thus is always with the current kernel version.
Eventually I hope to open a hosting solution based on KVM once QEMU gets its act together
drop me a pm if you wish to give it a run - shykilla, on 05/22/2008, -1/+6hahahaha
- iRelinquish, on 05/22/2008, -4/+9wtf, digg algorithm how did this get front page?
- sirhomer, on 05/23/2008, -0/+4Some explanations
Emulation: When software pretends to be another hardware architecture. Eg: a x86 pretending to be a PPC, or a Linux machine pretending to be a Nintendo 64.
Paravirtualization: A form of virtualization where the guest operating system is modified to operate better virtualized. The guest is aware it is being virtualized.
Native Virtualization: The guest is typically not aware it is being virtualized. This is less performance for more compatibility (especially with Windows OS)
OS Virtualization: Userspace is virtualized by the kernel is the same between guests. This is the fastest, but it doesn't work if you'd want to virtualize Windows in Linux. - oldhick, on 05/22/2008, -0/+4"excessively expensive"? The features of ESX are a bargain. If you can't justify the expense then you don't understand ROI.
While Microsoft's products might be cheaper they also suck. Hyper-V isn't available and won't have any of the important features available in ESX... - Craga89, on 05/22/2008, -0/+4Mirror: http://64.233.183.104/search?hl=en&safe=off&q=cach ...
- inactive, on 05/22/2008, -0/+3It's too bad you didn't think I was being truthful.
The truth is painful for me too, just in case you didn't know.
Try running Virtual PC on XP Home Edition, and you'll walk a few steps in my direction. - inactive, on 05/22/2008, -1/+4From Microsoft.com:
Virtual PC 2007 runs on:
Windows Vista Business, Windows Vista Enterprise, Windows Vista Ultimate, Windows Server 2003 Standard Edition, Windows Server 2003 Standard x64 Edition, Windows XP Professional, or Windows XP Tablet PC Edition - inactive, on 05/22/2008, -1/+4Are beginners using Windows XP Pro?
- t0ny, on 05/22/2008, -1/+3Because WINE = "Wine Is Not an Emulator"
http://www.winehq.org/site/myths#slow - Xanium4332, on 05/22/2008, -0/+2with three other systems, including one Wordpress install...
- sirhomer, on 05/23/2008, -0/+2[edit] Emulation
* Qemu - QEMU CPU Emulator
* Bochs - highly portable open source IA-32 (x86) PC emulator written in C++
* PearPC - architecture-independent PowerPC platform emulator
[edit] Paravirtualization
* Xen - Xen virtual machine monitor
[edit] Native Virtualization
* KVM - Kernel Based Virtual Machine
* VMware - desktop virtualization software for software developers/testers
* VirtualBox - GPL Virtual Computer
* UML - User-mode Linux
[edit] Operating System-level Virtualization
* FreeVPS - early Linux-VServer fork
* OpenVZ - Open Source version of the commercial Virtuozzo™ product from SWsoft
* FreeBSD jails - the closest equivalent standard feature in FreeBSD
* Sysjail - systrace userland virtualisation
* Solaris Zones - the closest equivalent standard feature in Solaris 10
Content is available under GNU Free Documentation License 1.2 - c00l2sv, on 05/22/2008, -0/+2Please stop just copy/pasting the same comment...
If you really want to say something interesting, then do it, stop spamming!
What's so hard to give a google search on "linux virtualisation"? Of course the linux-vserver.org will die if it will be dugg/slashdotted every day... (as I can remember, another article from them appeared on slashdot recently). - Devroush, on 05/22/2008, -0/+2Define "website is down". In this case the database server went down. Should Digg automatically sense that?
- shutaro, on 05/22/2008, -0/+2No, it just has a problem... It needs some counseling.
- inactive, on 05/22/2008, -0/+2Right into a trash can.
- MellerTime, on 05/22/2008, -1/+3I suppose it'd be stupid to mention Microsoft's Hyper-V?
VMWare is definitely the most robust, if a bit excessively expensive. - inactive, on 05/22/2008, -0/+2It's a wiki and it doesn't even cover them all... I think it got dugg for you to edit and add to the list.
- joebaloney, on 05/23/2008, -0/+1Well, despite the name, it does function as an emulator. What other type of label would you apply to it? If GNU is Not Unix, then what is http://www.gnu.org/software/hurd/hurd.html?
So basically, detailing what WINE stands for does not negate my question. - urgan, on 05/23/2008, -1/+2What kind of submission is this ?
- inactive, on 05/22/2008, -1/+2Zing?
- FolkTheory, on 05/23/2008, -0/+1wine is a free implementation of the windows API
- oldhick, on 05/22/2008, -2/+3Serious virtualization customers should really be looking at VMware's ESX line. None of the products you mention have the features a real enterprise is going to require.
Xen is a decent product that I've used for some really small businesses, but the bottom line is ESX is going to be required in an enterprise. - SunAlex, on 09/05/2008, -0/+1sorry, but the page doesn't load. what to do?
http://blog.ashtech.info/2007/10/16/
http://search.ashtech.info/hardware
http://shpe-sac.org/membership.htm
http://ksusg.com/press/
http://www.sooslic.com - litkaj, on 05/22/2008, -0/+1Yeah, it's the most flexible, but if you're just looking to separate a bunch of services on a Linux system then something like OpenVZ works great and it's a hell of a lot easier than getting some apps to run in a chroot jail.
- courtjester555, on 05/22/2008, -1/+2Oh, how I wish your comment were a joke
- ErrorLoading, on 05/22/2008, -2/+2I honestly don't know if that is a snide remark. Yes, most are going to be running some form of windows. Virtual PC works with both xp and vista and I haven't had any problems loading any form of linux system under it. Great way to break someone stuck only into windows into something else while still keeping their familiar system. Or someone wanting to toy with Vista for learning purposes, but they do not want to run it natively.
- EnigmaStrain, on 05/22/2008, -1/+1mirror anyone? it's not loading
- TheWindBlows, on 05/22/2008, -3/+2I hope the Virtualization doesn't give us the stability of this site.
- joebaloney, on 05/22/2008, -5/+1Is there a reason WINE isn't on that list?
- ErrorLoading, on 05/22/2008, -10/+6Virtual PC 2007 is now free and easily accessible even for beginners.
http://www.microsoft.com/windows/products/winfamil ... - Cherryone, on 05/22/2008, -7/+3One has to appreciate stuff like this! :)
- fejorca, on 05/22/2008, -8/+3the server is "virtually" down
- tobyadams, on 05/22/2008, -7/+2lame
- mehan, on 05/22/2008, -12/+6wat
- mark076h, on 05/22/2008, -9/+3LOL WUT!
- BXRWXR, on 05/22/2008, -17/+5Install Windows.
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