On Tue, May 20, 2008 at 04:57:16PM +0300, Henri Ala-Peijari wrote: > I have the Q9300 quad core CPU & Intel DG33FBC and Fedora9 64bit. By > default it scales the cores to 2.0GHz but when I add to panel "CPU > Frequency scaling monitor" and manually use that program to switch the 4 > cores to 2.5GHz I get the extra performance. I have tested this with > BOINC. Default settings give about 5500 (Dhrystone) MIPS and 100%/2.5GHz > give about 6900MIPS. Is there a way to set the cores permanently running > 2.5GHz (now I have to repeat this after every restart)? The original > BIOS detected the CPU 2.0GHz but after BIOS upgrade it shows 2.5GHz. Hmm, sounds like ondemand is being a little aggressive to ramp things back down after a busy period. I guess for some reason BOINC is 'bursty' rather than a long stretch of CPU-bound activity. You can try adjusting the tunables in /sys/devices/system/cpu/cpu*/cpufreq/ondemand/ Reducing the sampling_rate is probably a good place to start. (Note, it won't go lower than sampling_rate_min) Dave -- http://www.codemonkey.org.uk -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
