Hi
Was trying to increase the battery life on my laptop so fired up powertop. I noticed that the top interrupt is my radeon card, I have the default 12.1 radeon driver running.
Is there a way to reduce the radeon interrupts so I can increase my laptop life?
With the kernel is there anything that can be done here I found this post about creating a C.F.U CPU frequency utility but am not sure if its goal will assist me. I haven’t done much with kernels at this point. Link reference C.F.U. - CPU Frequency Utilitiy - Version 1.10 - For use with the cpufrequtils package - Blogs - openSUSE Forums
This was my powertop output.
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 0.3%) 2.27 Ghz 0.5%
polling 0.0ms ( 0.0%) 2.14 Ghz 0.0%
C1 mwait 0.4ms ( 0.0%) 2.00 Ghz 0.0%
C2 mwait 2.5ms ( 1.5%) 1.87 Ghz 0.0%
C3 mwait 10.9ms (98.2%) 933 Mhz 99.5%
Wakeups-from-idle per second : 96.4 interval: 15.0s
Power usage (ACPI estimate): 27.9W (1.2 hours)
Top causes for wakeups:
41.1% ( 53.7) [radeon] <interrupt>
29.8% ( 38.9) [Rescheduling interrupts] <kernel IPI>
8.4% ( 11.0) [brcmsmac] <interrupt>
3.4% ( 4.5) [ahci] <interrupt>
3.4% ( 4.4) kwin
2.5% ( 3.2) plasma-desktop
1.7% ( 2.2) mysqld
1.5% ( 2.0) kworker/0:1
0.9% ( 1.2) krunner
0.9% ( 1.1) kworker/0:2
0.8% ( 1.0) lancelot
Edited to include hardware information.
linux-t5t7:/home/Renshaw # lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
01:00.0 VGA compatible controller: ATI Technologies Inc Madison [Radeon HD 5000M Series]
01:00.1 Audio device: ATI Technologies Inc Redwood HDMI Audio [Radeon HD 5600 Series]
02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)
03:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
linux-t5t7:/home/Renshaw #