[Bug 212681] I/O is slow for FreeBSD DOMu on XenServer

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212681

--- Comment #11 from rainer at ultra-secure.de ---
Well, I chose "FreeBSD 10 64bit" as OS-type.

In dmesg, I see:

xbd0: attaching as ada0
xbd0: features: write_barrier
xbd0: synchronize cache commands enabled.

sysctl -a |grep xen
kern.vm_guest: xen
device  xenpci
vfs.pfs.vncache.maxentries: 0
dev.xctrl.0.%parent: xenstore0
dev.xenbusb_back.0.%parent: xenstore0
dev.xenbusb_back.0.%pnpinfo: 
dev.xenbusb_back.0.%location: 
dev.xenbusb_back.0.%driver: xenbusb_back
dev.xenbusb_back.0.%desc: Xen Backend Devices
dev.xenbusb_back.%parent: 
dev.xn.0.xenstore_peer_path: /local/domain/0/backend/vif/109/0
dev.xn.0.xenbus_peer_domid: 0
dev.xn.0.xenbus_connection_state: Connected
dev.xn.0.xenbus_dev_type: vif
dev.xn.0.xenstore_path: device/vif/0
dev.xn.0.%parent: xenbusb_front0
dev.xbd.0.xenstore_peer_path: /local/domain/0/backend/vbd3/109/768
dev.xbd.0.xenbus_peer_domid: 0
dev.xbd.0.xenbus_connection_state: Connected
dev.xbd.0.xenbus_dev_type: vbd
dev.xbd.0.xenstore_path: device/vbd/768
dev.xbd.0.%parent: xenbusb_front0
dev.xenbusb_front.0.%parent: xenstore0
dev.xenbusb_front.0.%pnpinfo: 
dev.xenbusb_front.0.%location: 
dev.xenbusb_front.0.%driver: xenbusb_front
dev.xenbusb_front.0.%desc: Xen Frontend Devices
dev.xenbusb_front.%parent: 
dev.xenstore.0.%parent: xenpci0
dev.xenstore.0.%pnpinfo: 
dev.xenstore.0.%location: 
dev.xenstore.0.%driver: xenstore
dev.xenstore.0.%desc: XenStore
dev.xenstore.%parent: 
dev.xenpci.0.%parent: pci0
dev.xenpci.0.%pnpinfo: vendor=0x5853 device=0x0001 subvendor=0x5853
subdevice=0x0001 class=0x010000
dev.xenpci.0.%location: pci0:0:3:0 handle=\_SB_.PCI0.S18_
dev.xenpci.0.%driver: xenpci
dev.xenpci.0.%desc: Xen Platform Device
dev.xenpci.%parent: 
dev.xen_et.0.%parent: nexus0
dev.xen_et.0.%pnpinfo: 
dev.xen_et.0.%location: 
dev.xen_et.0.%driver: xen_et
dev.xen_et.0.%desc: Xen PV Clock
dev.xen_et.%parent: 
dev.xen.xsd_kva: 18446735281894703104
dev.xen.xsd_port: 17
dev.xen.balloon.high_mem: 0
dev.xen.balloon.low_mem: 0
dev.xen.balloon.hard_limit: 18446744073709551615
dev.xen.balloon.driver_pages: 0
dev.xen.balloon.target: 1048576
dev.xen.balloon.current: 1047552


If I choose "Other 64bit", I get the same (at least in FreeBSD 11RC2, which is
what I could quickly switch-over).

xenbusb_back0: <Xen Backend Devices> on xenstore0
xbd0: 51200MB <Virtual Block Device> at device/vbd/832 on xenbusb_front0
xbd0: attaching as ada1
xbd0: features: write_barrier
xbd0: synchronize cache commands enabled.
xn0: backend features: feature-sg feature-gso-tcp4


What would you expect?

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