Sounds like your configuration is very similar to mine. I'm also on a vanilla kernel (2.6.27.7 in my case) with kvm-79 and AMD processors.
You sparked my curiosity on the depmod -a issue, so I spent some time trying it on different configurations. I have two servers: * 1.8GHz AMD Opteron 2210 on an HP DL385G2, AMD Opteron 2210 * 2.5GHz AMD Athlon 4850e on a "green" build w/ a Gigabyte GA-MA74Gm-S2 I can reproduce it on the Gigagbyte build with ease. On the HP DL385G2 server, I could reproduce it on one of my guests but only once in every four times (and with multiple guests running, not sure if that made a difference). Like you, I also have had the feeling that my occassional hangs were more likely on a freshly reboot, but don't have anything real conclusive to prove it. I'm afraid I don't have an Intel-based server around right now to see if this is an AMD-only issue. I might be able to scrounge up an HP DL380G5 (with an Intel Core 2) but I'm not sure. Chris On Wed, Dec 03, 2008 at 12:01:32AM +0100, xming wrote: > > I have a way to reproduce my instance of the problem easily now. I was > > trying > > to build a new kernel on my guest, and found that depmod hangs guests every > > time. > > In my case, I only have an amd processor - I don't have an intel > > host to try it on, right now, but it happens on Ubuntu 8.04 > > and Ubuntu 8.10 guests, both using kvm-79 and the version of kvm that ships > > with ubuntu 8.10. > > I have AMD too, vanilla kernel 2.6.27.6 and kvm-79 (although I have > this before 79). > the guest is SMP (UP guests hang too but less frequent). > > depmod does not hang here (not reproducible). Heavy CPU + heavy IO on nfs > mounts > triggers this on my side. > > I have a very subjective feeling that it happens more frequently when > the host has > less uptime (freshly rebooted). > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
