Monday Jun 30, 2008
Wednesday Jun 25, 2008
By Gregg Sporar on Jun 25, 2008
There is some limited support for power management in OpenSolaris 2008.05, but by default it is not enabled (hopefully that will change in a future release). There is an entry on the BigAdmin wiki page that describes the supported CPUs (from both Intel and AMD) and the simple steps for modifying the /etc/power.conf file. But this blog entry from Mark Haywood provides quite a bit more information. In it, he describes the CPU frequency scaling feature in detail. The feature slows the CPU when idle, so that the chip uses less power and generates less heat.
To follow his instructions, all I had to do was enter this at a command line:
$ pfexec gedit /etc/power.conf
I added two lines to the end of /etc/power.conf:
Saved the file and then ran this command:
And now OpenSolaris 2008.05 is happily slowing down my CPU when it is idle.
The Observatory is a blog for users of Oracle Solaris. Tune in here for tips, tricks and more as we explore the Solaris operating system from Oracle.
- Virtual Address Reservation in Solaris 11.3
- APIs for handling per-thread signals in Solaris
- PV IPoIB in Kernel Zones in Solaris 11.3
- Named threads in Oracle Solaris 11.3
- Better performing pthread reader-writer locks for NUMA architectures
- New Security Extensions in Oracle Solaris 11.3
- OpenSSL on Oracle Solaris 11.3
- Changes to ZFS ARC Memory Allocation in 11.3
- Multi-CPU Binding (MCB)
- Which Oracle Solaris Virtualization?