Using the Fair Share Scheduler on an Oracle Solaris System With Zones Installed

Limits specified through the prctl command are not persistent. The limits are only in effect until the system is rebooted. To set shares in a zone permanently, see How to Configure the Zone and How to Set zone.cpu-shares in the Global Zone.

How to Set FSS Shares in the Global Zone Using the prctl Command

The global zone is given one share by default. You can use this procedure to change the default allocation. Note that you must reset shares allocated through the prctl command whenever you reboot the system.

You must be the global administrator or a user granted the appropriate authorizations in the global zone to perform this procedure.

1. Become root or assume an equivalent role.
2. Use the prctl utility to assign two shares to the global zone:

   # prctl -n zone.cpu-shares -v 2 -r -i zone global

3. (Optional) To verify the number of shares assigned to the global zone, type:

   # prctl -n zone.cpu-shares -i zone global

See Also

For more information on the prctl utility, see the prctl(1) man page.

How to Change the zone.cpu-shares Value in a Zone Dynamically

This procedure can be used in the global zone or in a non-global zone.

1. Become root or assume an equivalent role.
2. Use the prctl command to specify a new value for cpu-shares.

   # prctl  -n zone.cpu-shares -r -v value -i zone zonename

   idtype is either the zonename or the zoneid. value is the new value.