https://bugzilla.novell.com/show_bug.cgi?id=297355 Summary: no_hz kernel is far too often in highest frequency Product: openSUSE 10.3 Version: Alpha 6 Platform: Other OS/Version: Other Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: aj@novell.com QAContact: qa@suse.de CC: matz@novell.com, trenn@novell.com Found By: --- On a nearly ideal system: top - 20:27:27 up 1:30, 7 users, load average: 0.56, 0.34, 0.23 Tasks: 115 total, 3 running, 112 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3%us, 0.3%sy, 0.0%ni, 99.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st The system is far too often speeding up to the fastest frequency: Cn Avg residency (15s) P-states (frequencies) C0 (cpu running) ( 6.9%) C1 0.0ms ( 0.0%) 1400 Mhz 55.5% C2 7.9ms (51.2%) 1300 Mhz 0.0% C3 7.9ms (41.9%) 1200 Mhz 0.0% 600 Mhz 44.5% If I boot with "nohz=off" I get: Cn Avg residency (10s) P-states (frequencies) C0 (cpu running) ( 8.3%) C1 0.0ms ( 0.0%) 1400 Mhz 0.0% C2 1.9ms (43.7%) 1300 Mhz 0.0% C3 2.6ms (48.1%) 1200 Mhz 0.0% 600 Mhz 100.0% I'm using the cpufreq ondemand governor. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.