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The option "queue-size" in virtio-blk was added in qemu-2.12.0, and default value increased from qemu-5.0.0. However, increasing this value may lead to drop of random access performance. Signed-off-by: Hiroki Narukawa <hnarukaw@yahoo-corp.jp> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
51 lines
1.9 KiB
XML
51 lines
1.9 KiB
XML
<domain type='qemu'>
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<name>QEMUGuest1</name>
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<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
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<memory unit='KiB'>219136</memory>
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<currentMemory unit='KiB'>219136</currentMemory>
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<vcpu placement='static'>1</vcpu>
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<os>
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<type arch='i686' machine='pc'>hvm</type>
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<boot dev='hd'/>
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</os>
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<cpu mode='custom' match='exact' check='none'>
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<model fallback='forbid'>qemu64</model>
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</cpu>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<emulator>/usr/bin/qemu-system-i386</emulator>
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<disk type='file' device='disk'>
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<driver name='qemu' type='raw' queues='4'/>
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<source file='/tmp/data.img'/>
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<target dev='vda' bus='virtio'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
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</disk>
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<disk type='file' device='disk'>
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<driver name='qemu' type='raw' queue_size='256'/>
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<source file='/tmp/data1.img'/>
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<target dev='vdb' bus='virtio'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
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</disk>
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<disk type='file' device='disk'>
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<driver name='qemu' type='raw' queues='4' queue_size='256'/>
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<source file='/tmp/data2.img'/>
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<target dev='vdc' bus='virtio'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
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</disk>
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<controller type='usb' index='0' model='piix3-uhci'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
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</controller>
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<controller type='ide' index='0'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
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</controller>
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<controller type='pci' index='0' model='pci-root'/>
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<input type='mouse' bus='ps2'/>
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<input type='keyboard' bus='ps2'/>
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<audio id='1' type='none'/>
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<memballoon model='none'/>
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</devices>
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</domain>
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