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281f70013e
https://bugzilla.redhat.com/show_bug.cgi?id=1135396 There are two ways how to tell qemu to use huge pages. The first one is suitable for domains with NUMA nodes: the path to hugetlbfs mount is appended to NUMA node definition on the command line. The second one is suitable for UMA domains: here there's this global '-mem-path' argument that accepts path to the hugetlbfs mount point. However, the latter case was not used for all the cases that it should be. For instance: <memoryBacking> <hugepages> <page size='2048' unit='KiB' nodeset='0'/> </hugepages> </memoryBacking> didn't trigger the '-mem-path' so the huge pages - despite being configured - were not used at all. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
33 lines
997 B
XML
33 lines
997 B
XML
<domain type='qemu'>
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<name>SomeDummyHugepagesGuest</name>
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<uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
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<memory unit='KiB'>1048576</memory>
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<currentMemory unit='KiB'>1048576</currentMemory>
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<memoryBacking>
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<hugepages>
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<page size='2048' unit='KiB'/>
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</hugepages>
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</memoryBacking>
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<vcpu placement='static'>2</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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<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</emulator>
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<disk type='block' device='disk'>
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<source dev='/dev/HostVG/QEMUGuest1'/>
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<target dev='hda' bus='ide'/>
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<address type='drive' controller='0' bus='0' target='0' unit='0'/>
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</disk>
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<controller type='usb' index='0'/>
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<controller type='ide' index='0'/>
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<controller type='pci' index='0' model='pci-root'/>
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<memballoon model='virtio'/>
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</devices>
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</domain>
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