On Friday, 28 August 2009 12:04:02 +0200, Christoph Lechner wrote: > Hi all, Hi Christoph. > running kvm-88 on a 2.6.26-1-amd64 kernel (stock Debian 5.0 kernel), I > get the syslog on the host system flooded with the message: > > Aug 28 11:49:40 reactor kernel: [124035.611782] KVM_APIC_READ: read > reserved register b0 > > The guest is running Debian 5.0 as well. Kernel 2.6.26-2-486. qemu is > started with the command line: > /opt/kvm-88/bin/qemu-system-x86_64 -hda web-int.img -m 512 -net > nic,vlan=0,macaddr=52:54:12:34:02:01 -net tap,vlan=0 -k de -vnc :4 > > > The message is always the same, only the timestamp differs. The log msg > is generated quite often, at least 10000 times per minute. The guest > system has 100% CPU usage, so has the qemu process on the host. I was > doing a search engine crawler run -- lots of network I/O -- , when the > log was filled. See the impressive growth rate of the syslog (crawler > running) > > reactor:/virt# ls -l /var/log/syslog; sleep 60; ls -l /var/log/syslog > -rw-r----- 1 root adm 17765119 2009-08-28 11:47 /var/log/syslog > -rw-r----- 1 root adm 19124492 2009-08-28 11:48 /var/log/syslog > (at least 99.9% of the new log entries are of the same kind as the one > above ...) Also I am observing this behavior in one of my hosts with KVM-88 and Linux 2.6.30 compiled both by myself on Ubuntu GNU/Linux Hardy Heron server amd64, as I've mentioned in a previous [1] mail. Guests has Debian GNU/Linux Lenny with stock kernel 2.6.26. I was trying if with model=virtio the problem were solved, but was not successful. It would seem that the cause is due to something related to hardware of the host (is it possible?), since I have other hosts in which I use both the same version of KVM and kernel, also both compiled by myself, and I'm not having this problem. Regards, Daniel [1] http://thread.gmane.org/gmane.comp.emulators.kvm.devel/39324 -- Fingerprint: BFB3 08D6 B4D1 31B2 72B9 29CE 6696 BF1B 14E6 1D37 Powered by Debian GNU/Linux Squeeze - Linux user #188.598
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