diff options
Diffstat (limited to 'docs/man')
| -rw-r--r-- | docs/man/xl.cfg.pod.5 | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5 index 314a03e339..8aaff1fec9 100644 --- a/docs/man/xl.cfg.pod.5 +++ b/docs/man/xl.cfg.pod.5 @@ -111,8 +111,8 @@ created online and the remainder will be offline. =item B<cpus="CPU-LIST"> -List of which cpus the guest is allowed to use. Default behavior is -`all cpus`. A C<CPU-LIST> may be specified as follows: +List of which cpus the guest is allowed to use. By default xl will pick +some cpus on its own (see below). A C<CPU-LIST> may be specified as follows: =over 4 @@ -132,6 +132,12 @@ run on cpu #3 of the host. =back +If this option is not specified, libxl automatically tries to place the new +domain on the host's NUMA nodes (provided the host has more than one NUMA +node) by pinning it to the cpus of those nodes. A heuristic approach is +utilized with the goals of maximizing performance for the domain and, at +the same time, achieving efficient utilization of the host's CPUs and RAM. + =item B<cpu_weight=WEIGHT> A domain with a weight of 512 will get twice as much CPU as a domain |