8.3.2. Memory Tuning with virsh
8.3.2. Memory Tuning with virsh 8.3.2.1. memtune The optional <memtune> element in the guest XML configuration allows administrators to configure guest virtual machine memory settings manually. If <memtune> is omitted, default memory settings apply. Display or set memory parameters in the <memtune> element in a virtual machine with the virsh memtune command, replacing values according to your environment: Available parameters include: hard-limit The maximum memory the virtual machine can use, in kibibytes (blocks of 1024 bytes). Warning Setting this limit too low can result in the virtual machine being killed by the kernel. soft-limit The memory limit to enforce during memory contention, in kibibytes (blocks of 1024 bytes). swap-hard-limit The maximum memory plus swap the virtual machine can use, in kibibytes (blocks of 1024 bytes). The swap-hard-limit value must be more than the hard-limit value. min-guarantee The guaranteed minimum memory allocation for the virtual machine, in kibibytes (blocks of 1024 bytes). Note See # virsh help memtune for more information on using the virsh # memtune command.
virsh # memtune virtual_machine --parameter size