Public bug reported:
I use as client Debian squeeze i386 with a custom kernel:
Linux (none) 2.6.35.5 #3 Thu Sep 23 18:36:02 UTC 2010 i686 GNU/Linux
And as host Debian squeeze amd64
Linux asd 2.6.32-5-amd64 #1 SMP Fri Sep 17 21:50:19 UTC 2010 x86_64 GNU/Linux
kvm version is:
kvm-88-5908-gdd67374
Started the client using:
sudo /usr/local/kvm/bin/qemu-system-x86_64 -m 1024 -kernel linux-2.6.35.5.qemu
-drive file=root.img,if=virtio -net
nic,macaddr=02:ca:ff:ee:ba:be,model=virtio,vlan=1 -net
tap,ifname=tap1,vlan=1,script=no -virtfs
local,path=/host,security_model=mapped,mount_tag=host -nographic
I've done following inside the guest:
$ mount -t 9p -o trans=virtio host /mnt
$ rm -f /mnt/test
$ touch /mnt/test
$ ls -l /mnt/test
$ while true ;do ls -l /host/test > /dev/null; done
Now I can see on my host system that the memory consumption starts at
90MB and after a minute it raises to 130MB. The extra memory
consumption stops when I stop the while-loop.
$ while true ;do ls -l /tmp > /dev/null; done
Doesn't show that behaviour.
** Affects: qemu
Importance: Undecided
Status: New
--
VirtFS possible memory leak in 9p virtio mapped
https://bugs.launchpad.net/bugs/648356
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Status in QEMU: New
Bug description:
I use as client Debian squeeze i386 with a custom kernel:
Linux (none) 2.6.35.5 #3 Thu Sep 23 18:36:02 UTC 2010 i686 GNU/Linux
And as host Debian squeeze amd64
Linux asd 2.6.32-5-amd64 #1 SMP Fri Sep 17 21:50:19 UTC 2010 x86_64 GNU/Linux
kvm version is:
kvm-88-5908-gdd67374
Started the client using:
sudo /usr/local/kvm/bin/qemu-system-x86_64 -m 1024 -kernel linux-2.6.35.5.qemu
-drive file=root.img,if=virtio -net
nic,macaddr=02:ca:ff:ee:ba:be,model=virtio,vlan=1 -net
tap,ifname=tap1,vlan=1,script=no -virtfs
local,path=/host,security_model=mapped,mount_tag=host -nographic
I've done following inside the guest:
$ mount -t 9p -o trans=virtio host /mnt
$ rm -f /mnt/test
$ touch /mnt/test
$ ls -l /mnt/test
$ while true ;do ls -l /host/test > /dev/null; done
Now I can see on my host system that the memory consumption starts at 90MB and
after a minute it raises to 130MB. The extra memory consumption stops when I
stop the while-loop.
$ while true ;do ls -l /tmp > /dev/null; done
Doesn't show that behaviour.
