Setting hard cpu limits under Solaris zones using zonecfg

Very easy to do. There are two methods:

1) set hard cpu limits
2) set cpu pools

For ease of use I'd recommend going with option 1 and here are the steps to take:

bash-3.00# zlogin myserver
[Connected to zone 'myserver' pts/1]
Last login: Thu Jul 30 11:40:18 on pts/1
Sun Microsystems Inc. SunOS 5.10 Generic January 2005

# psrinfo
4 on-line since 07/04/2009 09:53:11
5 on-line since 07/04/2009 09:53:11
6 on-line since 07/04/2009 09:53:11
7 on-line since 07/04/2009 09:53:11
8 on-line since 07/04/2009 09:53:11
9 on-line since 07/04/2009 09:53:11
10 on-line since 07/04/2009 09:53:11
11 on-line since 07/04/2009 09:53:11
12 on-line since 07/04/2009 09:53:11
13 on-line since 07/04/2009 09:53:11
14 on-line since 07/04/2009 09:53:11
15 on-line since 07/04/2009 09:53:11
16 on-line since 07/04/2009 09:53:11
17 on-line since 07/04/2009 09:53:11
18 on-line since 07/04/2009 09:53:11
19 on-line since 07/04/2009 09:53:11
20 on-line since 07/04/2009 09:53:11
21 on-line since 07/04/2009 09:53:11
22 on-line since 07/04/2009 09:53:11
23 on-line since 07/04/2009 09:53:11
# exit

[Connection to zone 'myserver' pts/1 closed]

bash-3.00# zonecfg -z myserver
zonecfg:maass> add dedicated-cpu
zonecfg:maass:dedicated-cpu> setncpus=4
zonecfg:maass:dedicated-cpu> end
zonecfg:maass> exit



Reboot the zone and log back in:

bash-3.00# zlogin myserver
[Connected to zone 'myserver' pts/1]
Last login: Thu Jul 30 11:44:59 on pts/1
Sun Microsystems Inc. SunOS 5.10 Generic January 2005
# psrinfo
4 on-line since 07/04/2009 09:53:11
5 on-line since 07/04/2009 09:53:11
6 on-line since 07/04/2009 09:53:11
7 on-line since 07/04/2009 09:53:11