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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>
8 lines
327 B
Plaintext
8 lines
327 B
Plaintext
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
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/usr/bin/qemu -S -M pc -m 1024 \
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-mem-prealloc \
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-mem-path /dev/hugepages2M/libvirt/qemu \
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-smp 2 -nographic \
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-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \
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-hda /dev/HostVG/QEMUGuest1 -net none -serial none -parallel none
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