Lines Matching full:ram
1 Mapped-ram
4 Mapped-ram is a new stream format for the RAM section designed to
6 with ``multifd``. This enables parallel migration of a guest's RAM to
9 The core of the feature is to ensure that RAM pages are mapped
25 ``mapped-ram`` capabilities:
29 ``migrate_set_capability mapped-ram on``
35 Mapped-ram migration is best done non-live, i.e. by stopping the VM on
45 The mapped-ram feature was designed for use cases where the migration
54 that's the ideal scenario for mapped-ram migration. Not having to
55 track dirty pages, the migration will write the RAM pages to the disk
66 the snapshot operation, then mapped-ram migration can still be used,
69 mapped-ram in this scenario is portability since background-snapshot
74 snapshots or the ``file:`` migration alone, mapped-ram provides
75 a performance increase for VMs with larger RAM sizes (10s to
78 RAM section format
83 instead. This ensures that each RAM page has a fixed offset in the
93 Without mapped-ram: With mapped-ram:
98 | ramblock 2 header | | ramblock 1 mapped-ram header |
108 | ... | | ramblock 2 mapped-ram header |
127 - ramblock mapped-ram header: the information added by this feature:
141 RAM. Other types of memory such as VRAM are migrated as part of device