Tomasz Chmielewski schrieb:
As I mentioned, it was using virtio net.
Guests running with e1000 (and virtio_blk) don't have this problem.
Also, virtio_console seem to be affected by this "slowness" issue.
Am I correct to think that if:
* on guest "lsmod" outputs:
virtio_console 6828 0 [permanent]
* on guest, /etc/inittab contains:
6:2345:respawn:/sbin/mingetty ttyS0
* on host, I start the guest with a parameter:
-serial unix:/var/run/qemu-server/103.serial,server,nowait
That the guests's ttyS0 console is "virtio_console"?
If my thinking is correct, than I have a "slow serial console" on some
of the guests using virtio_pci and virtio_console driver.
By "slow serial console" I mean any character typed shows up after a
second or so.
It can be also "cured" like with virtio_net - just run:
dd if=/dev/vda of=/dev/null
And the console reacts normally. Stop dd, console is slow again.
I have this issue on two guests with e1000 network, which use virtio_blk
(and virtio_console...).
I never saw this issue with guests which don't use virtio.
--
Tomasz Chmielewski
http://wpkg.org
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