Virsh Memory Commands

• virsh memtune Get or set memory parameters
• virsh setmaxmem VM_MACHINE 16G (VM must be stopped) change maximum memory limit
• virsh setmem VM_MACHINE 8G (VM must be running) change memory allocation
• virsh dommemstat VM_MACHINE get memory statistics for a domain
• virsh freecell NUMA free memory
• virsh node-memory-tune Get or set node memory parameters
• virsh nodememstats Prints memory stats of the node.

Related commands

• virsh dominfo VM_MACHINE | grep memory
• virsh dominfo VM_MACHINE | grep "CPU(s)"
• virsh setvcpu
• virsh domstats --memory (Added in libvirt v6.0.0 (2020-01-15))

Related changelog

• QEMU 4.2.0.12/12/2019 ARM: “virt” machine now supports memory hotplugging

See also

• virsh Memory Commands: virsh setmaxmem, virsh setmem, virsh dommemstat
• virsh: Storage information, Connecting, Operations, Memory, Snapshots, Networking, CPU, release notes, virsh nodedev-list
• KVM, Installation, QEMU, virsh, virtinst, libguestfs-tools, libvirt, qemu, Red Hat Virtualization (RHV), MacVTap, Virtio, oVirt, KVM services, KVM networking, KVM graphics, CPU, KVM on ARM
• Memory: memory pages, RAM, virsh Memory Commands, OOM, meminfo, vmstat, NAND, DDR, lsmem, /dev/shm, /proc/meminfo, sar -r, IOMMU, pmem, Memory management, Garbage collector, THP, Linux Huge Page TLB