Doug Steele
dbdoug at gmail.com
Mon Dec 3 15:01:39 CST 2012
Arthur, I think you are making one bad assumption - that hardware is 'way faster than any VM'. From a practical point of view (I have to say that because I can't be bothered running tests) I cannot tell the difference in speed between Windows 7 running on hardware and in a VM (Parallels in this case). For about $700 I just bought a Mac Mini. That gives me a bitchin' OSX system, a bitchin' Office 2003/Windows development system, a bitchin' Office 2010 Windows development system, and any other bitchin' computer I feel like setting up :) Doug On Mon, Dec 3, 2012 at 12:08 PM, Arthur Fuller <fuller.artful at gmail.com>wrote: > Ok, maybe I am getting something absolutely wrong here, but I fail to > comprehend the VM thing. It seems to me that given the plummeting price of > hardware, VMs have no reason to exist. For example, all you need for a > bitchin' Linux box or XP box or Windows 7 box is about $500 or less. Said > box would run way faster than any VM, and if you have a KVM then you have > about 4 or 5 boxes all running at once, and push a button to switch from > this one to that one. Granted, there is also the consumption-of-electricity > issue to to factor into this, but even granting that, I still don't get it. > So let us suppose that I want two Linux boxes, onw XP box, one Windows 7 > box, a dedicated server, and although I don't yet have the money, a Windows > 8 box. The XP and Linux boxes think 2GB is wealth. The Win7 and Win8 prefer > a tad more, and the server more than a tad more. But my point is, why not > just buy a separate box for each task? We're not talking about huge amounts > of loot here. And the gain is that everything runs as quickly as it can! > > So maybe I'm missing something important here; in which case, please > educate me. > > A. > > > On Mon, Dec 3, 2012 at 5:17 AM, Salakhetdinov Shamil <mcp2004 at mail.ru > >wrote: > > > Hi Stuart and John -- > > > > Thank you for your comments. > > > > Yes, I do remember MS DOS Stacker etc. but I have never used virtual hard > > disks in MS Windows: I have asked about performance hit because I have > > found that when setting a "map network drive" share from VM to a host PC > > virtual harddisk it takes some time even to create and save via > notepad.exe > > a small text file. During that time notepad.exe becomes "frozen". When > you > > restart VM with "map network drive" share automatically remapped then > such > > a "performance hit side effect" disappears... > > > > Anyway I'm going to try using virtual hard disks to keep the source files > > and test databases for my customers projects... > > > > Thank you. > > > > -- Shamil > > > > Mon 3 Dec 2012 13:36:06 от "Stuart McLachlan" <stuart at lexacorp.com.pg>: > > > > > > > > > > > > > > > > > > > > > > > > >I did some testing a while ago with Access and VirtualBox. > > > > > > > > > > There was no appreciable difference when writing and reading large test > > datasets between > > > > > Access running directly in Win 7 and running in a VirtualBox > installation > > with a virtual HD. > > > > > > > > > > Certainly nothing a user would notice. > > > > > > > > > > Except in one instance where I created a new virtual machine and told it > > to create a > > > > > "dyanically allocated" disk rather "fixed size" - that really slowed down > > the initial writes :-) > > > > > > > > > > > > > > > -- > > > > > Stuart > > > > > > > > > > On 2 Dec 2012 at 20:28, jwcolby wrote: > > > > > > > > > > > Is the average Windows 7 desktop user going to notice the overhead of > > reading and writing to a > > > > > > virtual disk? > > > > > > > > > > > > John W. Colby > > > > > > Colby Consulting > > > > > > > > > > > > > > > > _______________________________________________ > > > > > dba-VB mailing list > > > > > >dba-VB at databaseadvisors.com > > > > > >http://databaseadvisors.com/mailman/listinfo/dba-vb > > > > > >http://www.databaseadvisors.com > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > dba-VB mailing list > > dba-VB at databaseadvisors.com > > http://databaseadvisors.com/mailman/listinfo/dba-vb > > http://www.databaseadvisors.com > > > > > > > -- > Arthur > Cell: 647.710.1314 > > Prediction is difficult, especially of the future. > -- Niels Bohr > _______________________________________________ > dba-VB mailing list > dba-VB at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/dba-vb > http://www.databaseadvisors.com > >