Maximize performance by running at least at 1400MHz and switching to higher speeds real fast: estd_flags="-d -a -m 1400"Īlternatively, you can start estd directly from /etc/rc.local instead of rc.conf/rc.d. Maximize battery lifetime by limiting CPU-frequency to 1000 MHz and switching to lower speeds fast: estd_flags="-d -b -M 1000" Depending on the system load the CPU frequencies can be scaled automatically, this is in response to the ACPI events. To make it start at boot-time cp /usr/pkg/share/examples/rc.d/estd /etc/rc.d/ What is frequency scaling in quick CPU CPU Frequency Scaling is a feature that enables the operating system to scale the CPU frequency up or down to save power. It is written for systems running NetBSD or DragonFly. The estd daemon dynamically sets the frequency on SpeedStep and PowerNow!-enabled CPUs depending on current CPU-utilization. Same procedure as with PowerNow!: options POWERNOW_K8 speedstep-smiĪlso accessible through sysctl -w machdep.speedstep_state=Īccessible through machdep.tm_longrun_mode Where 0 is a low state and 1 is a high state. Sysctl -w =600Īccessible through sysctl -w machdep.speedstep_state= Intel Speedstep options ENHANCED_SPEEDSTEPĪccessible through e.g.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |