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Mac Forum / Applications / Virtual PC / November 2006Kernel panics with dual CPUs
I know that this topic has been done to death, but I have seen little evidence as to what one should actually *do* when encountering kernel panics. I'm using VPC 7.02 on a dual 2.3GHz G5 with 1GB of RAM, running OS X 10.4.8. I've installed Windows XP (SP1 upgraded to SP2), and I think I have a repeatable way to panic a system. For reasons of workflow, I'm using the Virtual Switch method of network connectivity; which I think plays a large role in getting my system to panic. However, I have noticed that iTunes (of all things!) is what is causing me the most grief. Here is the scenario: if I use Virtual Switch networking, don't launch iTunes at all on my Mac and boot Windows XP in VPC, I never get a panic. If I use Virtual Switch networking, launch iTunes on my Mac (even if I *never* play a track) and boot XP, it will panic within 0-5 minutes of me logging on in XP. If I use Shared Networking, I don't think it panics at all. So... what do I do? If worse comes to worse, I suppose I could have new workflow where I try and use the other NIC built into my G5 for Virtual Switch networking, perhaps that will cure the problem. But not being able to use iTunes is a little rough for me :-) Thanks, Chris Since you are using a dual cpu system is it safe to assume that the XP you are using is Pro and not Home? >I know that this topic has been done to death, but I have seen little > evidence as to what one should actually *do* when encountering kernel [quoted text clipped - 20 lines] > > Chris > Since you are using a dual cpu system is it safe to assume that the XP you > are using is Pro and not Home? Yes Colin, that's correct. It's a Volume License version, if that matters (i.e. no activation). Chris > >I know that this topic has been done to death, but I have seen little > > evidence as to what one should actually *do* when encountering kernel [quoted text clipped - 20 lines] > > > > Chris No it shouldn't matter. I asked the wrong question since a vm would only use one logical cpu anyway. My apologies for not remembering that. >> Since you are using a dual cpu system is it safe to assume that the XP >> you [quoted text clipped - 29 lines] >> > >> > Chris > No it shouldn't matter. I asked the wrong question since a vm would only > use one logical cpu anyway. My apologies for not remembering that. No problem, Colin :-) I saw some older messages on this group where people suspect panics originate from something to do with the host system (OS X) having dual CPUs, so I wanted to make sure I mentioned it. It is really baffling, though; if I don't have iTunes open at the time of launching the VPC, it never panics! Chris > >> Since you are using a dual cpu system is it safe to assume that the XP > >> you [quoted text clipped - 29 lines] > >> > > >> > Chris Cute! :/ >> No it shouldn't matter. I asked the wrong question since a vm would only >> use one logical cpu anyway. My apologies for not remembering that. [quoted text clipped - 50 lines] >> >> > >> >> > Chris On Nov 28, 3:07 pm, "Colin Barnhorst" <colinbarharst(remove)@msn.com> wrote: > Cute! :/ > [quoted text clipped - 52 lines] > > >> >> > Chris- Hide quoted text -- Show quoted text - You are correct, Chris. Running iTunes with VPC will cause a kernel panic. Both are very processor intensive programs and seem to be competing for CPU time. Even for those who are not experiencing kernel panics (ie: single processor Macs), iTunes will cause a severe slowdown in VPC. My best advice? Don't use iTunes when using VPC .....and vice versa > On Nov 28, 3:07 pm, "Colin Barnhorst" <colinbarharst(remove)@msn.com> > wrote: [quoted text clipped - 66 lines] > in VPC. My best advice? Don't use iTunes when using VPC .....and vice > versa I've not seen this problem at all on my Quicksilver Dual 1GHz G4. I can run iTunes 7.02 and VPC 7.02 simultaneously without problems. I have noticed that sometimes I get really choppy stream playback or something in VPC shuts down the network connection altogether. In that case, I just shutdown VPC, power cycle my cable modem and router, and run Network Diagnostics. The connection comes back just fine. No panic and no reboot required. YMMV.  SignatureDeeDee, don't press that button! DeeDee! NO! Dee... > In article <1164745067.053481.316...@j72g2000cwa.googlegroups.com>, > [quoted text clipped - 78 lines] > -- > DeeDee, don't press that button! DeeDee! NO! Dee...- Hide quoted text -- Show quoted text - It doesn'r seem to affect the G3 or G4.....only the G5 > > No it shouldn't matter. I asked the wrong question since a vm would only > > use one logical cpu anyway. My apologies for not remembering that. [quoted text clipped - 6 lines] > It is really baffling, though; if I don't have iTunes open at the time > of launching the VPC, it never panics! I got a dual 2.7 G5 running 10.4.8 with 2.5 GB RAM and have no problem with VPC and iTunes. My virtual switch is set to default, though. > Chris > [quoted text clipped - 31 lines] > > >> > > > >> > Chris SignatureTo reply by email, remove the word "space" > > > No it shouldn't matter. I asked the wrong question since a vm would only > > > use one logical cpu anyway. My apologies for not remembering that. [quoted text clipped - 9 lines] > I got a dual 2.7 G5 running 10.4.8 with 2.5 GB RAM and have no problem > with VPC and iTunes. My virtual switch is set to default, though. At the moment, my Virtual Switch is set to default too -- I haven't tried experimenting with the settings (yet). But I can crash my VM 100% of the time if I load iTunes, even if I never play a track :-\ Chris > > > > No it shouldn't matter. I asked the wrong question since a vm would > > > > only [quoted text clipped - 16 lines] > > Chris Wonder if it's a memory issue? One of the last posters said both were memory hogs. I had a horrible intermittant crashing problem with VPC on my G4 dual 867 and 10.3.9. Never found the problem. Things seem more stable on this newer machine. All my problems are with Windows. SignatureTo reply by email, remove the word "space" |
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