qemu compiled from today's git. Using the following command line:
$qemudir/x86_64-softmmu/qemu-system-x86_64 -L $qemudir/pc-bios \
-drive file=/dev/null,if=virtio \
-enable-kvm \
-nodefaults \
-nographic \
-serial stdio \
-m 500 \
-no-reboot \
-no-hpet \
-net user,vlan=0,net=169.254.0.0/16 \
-net nic,model=ne2k_pci,vlan=0 \
-kernel /tmp/libguestfsEyAMut/kernel \
-initrd /tmp/libguestfsEyAMut/initrd \
-append 'panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off
printk.time=1 cgroup_disable=memory selinux=0
guestfs_vmchannel=tcp:169.254.2.2:35007 guestfs_verbose=1 TERM=xterm-color '
With kernel 2.6.35 [*], this takes about 1 min 20 s before the guest
starts.
If I revert back to kernel 2.6.34, it's pretty quick as usual.
strace is not very informative. It's in a loop doing select and
reading/writing from some file descriptors, including the signalfd and
two pipe fds.
Anyone seen anything like this?
Rich.
[*] This Fedora kernel:
http://koji.fedoraproject.org/koji/buildinfo?buildID=187085
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://et.redhat.com/~rjones/libguestfs/
See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html
