Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

Topic # 85842 26-Jun-2011 19:37
Send private message

Put another 4GB in my machine, now I find that I am losing networking in the virtual PCs quite quickly, and then the virtual PC host process will crash, all the VM windows go white and I have to end VMwindow thru task manager for them to close and get the ram back.

Now, it might be because I am now trying to run 3 or 4 at once since I can, instead of struggling to run 2 of them, or it may be something with the network interface driver for the one on the motherboard of this horrible AMD machine, but before I start troubleshooting I thought I would check a few things.

Has anyone else had this happen
Is there a limit to how many VMs you can run? All but one are just copies of the virtual XP mode machine that windows 7 installs for you, the other one has server 2003 installed into it as my backup domain controller for when the junkbox the main one is running on finally dies so I can build a new one and join the domain.




Richard rich.ms

Create new topic
BDFL - Memuneh
59182 posts

Uber Geek
+1 received by user: 10415

Administrator
Trusted
Geekzone
Subscriber

  Reply # 486180 26-Jun-2011 19:41
Send private message

You shouldn't have a limit, except for the memory. Also if the machines are busy the limits of number of threads vs CPU vs cores would be something to consider.







20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 486181 26-Jun-2011 19:45
Send private message

Its just done it with only 1 running, and its only running a utorrent and openvpn, nothing intensive. If I go and assign the second VM NIC to the realtek onboard, it also is dead, before I got it to get a lease on the second nic briefly before it died.

Will try back on 4 gigs later this evening and see what happens.




Richard rich.ms

 
 
 
 


2377 posts

Uber Geek
+1 received by user: 107


  Reply # 486185 26-Jun-2011 20:04
Send private message

Could be that your 2nd 4GB of RAM is bad.. try running a memtest over it?



20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 486186 26-Jun-2011 20:06
Send private message

It was fine in the machine it came out of, will do a memtest tomorrow if pulling it out solves it. There were some windows updates installed when I shutdown to install it, not been done in about 3 months so it could also have been one of them that has done something. Argh computers.




Richard rich.ms



20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 486236 26-Jun-2011 23:07
Send private message

Ok, its nothing to do with the ram, I am back on my original 4 gigs and its still doing it, even with one VM running. Grr. cant even ping the host machine after a while even with a static assignment. Gonna try them in a fresh install and see if that behaves.

Thing is, heaps of windows updates and the install of the new avira happened on the same shutdown to put the ram in so its a "could be anything" situation




Richard rich.ms



20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 486248 27-Jun-2011 00:38
Send private message

Ok, its behaving itself from a fresh install on the same hardware, same .VHD's with 4 gigs, so yet another thing wrong with my old install that has all my apps installed on it.

Might just finally bite the bullet over this week and move to a new installation and get everything I need installed. First up office and see if I can convince it to not redownload everything from the imap accounts.




Richard rich.ms

Infrastructure Geek
4043 posts

Uber Geek
+1 received by user: 193

Trusted
Microsoft NZ
Subscriber

  Reply # 486253 27-Jun-2011 01:11
Send private message

check your pagefile size. if its too small and tries to expand then that could be causing issues.




Technical Evangelist
Microsoft NZ
about.me/nzregs
Twitter: @nzregs




20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 487812 30-Jun-2011 12:54
Send private message

Ok, now the second installation of windows 7 is having the same problem, and its got worse. Even starting a new VM based off the windows xp mode base image will die as soon as it tries to do the networking (just after asking the PC name and admin password in windows setup)

Turning off the network interfaces (setting them all to not connected) solves it. Even tried it with the first one on NAT and it dies at that point. once installed it dies as soon as I enable networking.

I have tried removing and reinstalling the driver for the onboard realtek 8111c or whatever it is (the driver lists several chips supported) and no change. Removed and reinstalled virtual PC in both installs of windows and the same thing happens.

I am suspecting something either along the lines of hardware failure or something more sinister affecting the network stack. Im going to try a fresh HDD, fresh install of 7 and see if XP mode works on that OK, then try reintroducing my VM's.

Should my VM based off the xp mode base image off my old install work when I move the vhd to a machine with a fresh install of it? Like is the file identical between installations of windows XP mode. Obvioulsy my installs of server and linuxes will be fine since they are not differenceing off the image that microsoft supplied, but a bulk of what I want is in the windows XP ones.




Richard rich.ms

1943 posts

Uber Geek
+1 received by user: 127

Trusted

  Reply # 489409 4-Jul-2011 22:14
Send private message

kyhwana2: Could be that your 2nd 4GB of RAM is bad.. try running a memtest over it?


You did take precautions against static when touching the cards of course... Right?




Qualified in business, certified in fibre, stuck in copper, have to keep going  ^_^



20439 posts

Uber Geek
+1 received by user: 3901

Trusted
Subscriber

  Reply # 489425 4-Jul-2011 22:44
Send private message

Just the usual ones of holding the case.

Ran the tests for as long as I could tollerate being without PC, all fine, back on 4 gigs and it was dying as soon as the VM tried to use the network.

Fresh install of 7 (accidenally used professional not the one I should have used for the license on the case.. oops) and its working fine even with all 5 VMs open at once.

I am now thinking that its something to do with a network driver update or something, since I am using the windows supplied drivers for everythign, whereas on the other install I had used the actual realtek drivers so I could try to get vlans working (and no, you cant connect a VM to a virtual VLAN interface which is what I wanted to do) - but it was working sweetas for ages with those drivers.

Im going to try updating things and see what happens, but I think I will just install my apps on the new install and bring my profile across.




Richard rich.ms

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26


The Warehouse Group to adopt IBM Cloud to support digital transformation
Posted 11-Dec-2017 11:22


Dimension Data peeks into digital business 2018
Posted 11-Dec-2017 10:55


2018 Cyber Security Predictions
Posted 7-Dec-2017 14:55


Global Govtech Accelerator to drive public sector innovation in Wellington
Posted 7-Dec-2017 11:21


Stuff Pix media strategy a new direction
Posted 7-Dec-2017 09:37


Digital transformation is dead
Posted 7-Dec-2017 09:31


Fake news and cyber security
Posted 7-Dec-2017 09:27


Dimension Data New Zealand strengthens cybersecurity practice
Posted 5-Dec-2017 20:27


Epson NZ launches new Expression Premium Photo range
Posted 5-Dec-2017 20:26


Eventbrite and Twickets launch integration partnership in Australia and New Zealand
Posted 5-Dec-2017 20:23


New Fujifilm macro lens lands in New Zealand
Posted 5-Dec-2017 20:16


Cyber security not being taken seriously enough
Posted 5-Dec-2017 20:13


Sony commences Android 8.0 Oreo rollout in New Zealand
Posted 5-Dec-2017 20:08



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.