Setting memory parameters per node
To change per-node memory parameters
Use the following command:
vinfra memory-policy vstorage-services per-node change [--guarantee <guarantee>] [--swap <swap>] [--cache-ratio <cache-ratio> --cache-minimum <cache-minimum> --cache-maximum <cache-maximum>] --node <node>
--guarantee <guarantee>
- Guarantee, in bytes
--swap <swap>
- Swap size, in bytes, or -1 if unlimited
--cache-ratio <cache-ratio>
- Cache ratio from 0 to 1 inclusive
--cache-minimum <cache-minimum>
- Minimum cache, in bytes
--cache-maximum <cache-maximum>
- Maximum cache, in bytes
--node <node>
- Node ID or hostname
For example, to set the storage memory parameters for the node node001
, run:
# vinfra memory-policy vstorage-services per-node change --guarantee 8796093022208 --swap 1099511627776 --cache-ratio 0.5 \ --cache-minimum 1099511627776 --cache-maximum 3298534883328 --node node001
This command sets the memory parameters as follows:
- The memory guarantee to 8 GB
- The swap size to 1 GB
- The page cache limits: the minimum to 1 GB, the maximum to 3 GB, and the cache ratio to 0.5
You can view the updated per-node memory parameters in the vinfra memory-policy vstorage-services per-node show
output:
# vinfra memory-policy vstorage-services per-node show --node node001 +-----------+-------------------------+ | Field | Value | +-----------+-------------------------+ | cache | maximum: 13194139533312 | | | minimum: 8796093022208 | | | ratio: 0.7 | | guarantee | 8796093022208 | | swap | 1099511627776 | +-----------+-------------------------+
To reset per-node parameters to default
Use the following command:
vinfra memory-policy vstorage-services per-node reset [--guarantee] [--swap] [--cache] --node <node>
--guarantee
- Reset only the guarantee.
--swap
- Reset only the swap size.
--cache
- Reset only cache values.
--node <node>
- Node ID or hostname
For example, to reset the manually configured page cache limits to default for the node node001
, run:
# vinfra memory-policy vstorage-services per-node reset --cache --node node001