CPU Mask

The xiRaid Opus utilizes more than one CPU cores. You have to specify the number of cores that the product can use. This is a mandatory parameter and must be configured during the installation. It can be passed via the -m parameter as core mask (like 0xF) or core list of '[]' embraced (like [0,1,10]). If your system has several NUMA nodes it is recommended to select CPU cores and allocate hugemem at same NUMA node for optimal performance.

$ sudo xnr_xiraid -m 0x3 --xnr-hugemem 9000 --xnr-nostart

xiRAID allows to check and change CPU mask in runtime. To check the configured CPU mask use the command:

$ xnr_cli config get --name cpu_mask

This parameter can be updated by the following commands. The xiRAID service shall be restarted to apply new CPU mask value:

$ xnr_cli config set --name cpu_mask --value 0xfffe