Overclock.net › Forums › Software, Programming and Coding › Operating Systems › Linux, Unix › PowerTOP wakeups-from-idle
New Posts  All Forums:Forum Nav:

PowerTOP wakeups-from-idle

post #1 of 6
Thread Starter 
Howdy,

I am a bit curious as to my server utilizing what seems to be a high amount of wakeups from the kernel. I googled around a bit but didn't find a whole lot that is inherently useful. Any thoughts?
Code:
PowerTOP version 1.11      (C) 2007 Intel Corporation

< Detailed C-state information is not P-states (frequencies)
                                        1.80 Ghz     0.2%
                                        1500 Mhz     0.0%
                                         800 Mhz    99.8%



Wakeups-from-idle per second : 1530.4   interval: 5.0s
no ACPI power usage estimate available

Top causes for wakeups:
  67.7% (2002.0)     <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
  32.0% (947.2)       <interrupt> : extra timer interrupt
   0.1% (  2.6)       <interrupt> : eth0
   0.1% (  2.0)     <kernel core> : clocksource_watchdog (clocksource_watchdog)
   0.1% (  1.8)      <kernel IPI> : Rescheduling interrupts
   0.0% (  0.6)          events/1 : queue_delayed_work (delayed_work_timer_fn)
   0.0% (  0.6)          events/0 : queue_delayed_work (delayed_work_timer_fn)
   0.0% (  0.4)     <kernel core> : start_bandwidth_timer (sched_rt_period_timer)
   0.0% (  0.2)              sshd : sk_reset_timer (tcp_write_timer)
   0.0% (  0.2)     <kernel core> : sk_reset_timer (tcp_delack_timer)
   0.0% (  0.2)        watchdog/0 : hrtimer_start (watchdog_timer_fn)
   0.0% (  0.2)        watchdog/1 : hrtimer_start (watchdog_timer_fn)
   0.0% (  0.2)     <kernel core> : dev_watchdog (dev_watchdog)
   0.0% (  0.2)     <kernel core> : bdi_arm_supers_timer (sync_supers_timer_fn)



[beers@fs ~]$ uname -a
Linux fs 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
post #2 of 6
Your kernel is on a static tick rather than a dynamic tick. Go enable CONFIG_NO_HZ in the kernel precompile configuration and see the wakeups drop.
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
post #3 of 6
Thread Starter 
Is there any way to verify that? Doesn't the RHEL/CentOS kernel come precompiled as tickless for modern releases?
Quote:
[beers@fs ~]$ sudo cat /boot/config-2.6.32-279.14.1.el6.x86_64 | grep NO_HZ
CONFIG_NO_HZ=y
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
post #4 of 6
Yeah that does seem odd then. What modules do you have loaded (lsmod)?
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
#well
(19 items)
 
Lenovo L530
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H XFX Radeon HD 6950 Corsair CMX8GX3M2A2000C9 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 Hitachi HDS722020ALA330 Generic DVD±RW Burner Noctua NH-D14 
OSMonitorMonitorKeyboard
Windows 8.1 Dell U2711 LG W2453 Ducky DK9008 Overclock.net Edition, Cherry MX B... 
PowerCaseMouseMouse Pad
Corsair TX850 Antec Three Hundred Corsair Raptor M40 QPAD HeatoN M 
AudioAudioAudio
E-MU Tracker|pre Beyerdynamic DT-770 250 Ohm AntLion ModMIc 
CPUGraphicsRAMRAM
Intel Ivy Bridge 3210M Intel HD 4000 Graphics Soldered Corsair Vengeance  
Hard DriveOptical DriveOSMonitor
500GB DVD-+RW Windows 7 Professional 1600x900 
  hide details  
Reply
post #5 of 6
Thread Starter 
Here's the list.
Thanks for taking a look smile.gif
Code:
[root@fs x86_64]# lsmod
Module                  Size  Used by
cpufreq_stats           4520  0
cpufreq_ondemand       10544  2
powernow_k8            18267  1
freq_table              4881  3 cpufreq_stats,cpufreq_ondemand,powernow_k8
mperf                   1557  1 powernow_k8
ipt_REJECT              2351  2
nf_conntrack_ipv4       9506  12
nf_defrag_ipv4          1483  1 nf_conntrack_ipv4
iptable_filter          2793  1
ip_tables              17831  1 iptable_filter
ip6t_REJECT             4628  2
nf_conntrack_ipv6       8748  2
nf_defrag_ipv6         11981  1 nf_conntrack_ipv6
xt_state                1492  14
nf_conntrack           79453  3 nf_conntrack_ipv4,nf_conntrack_ipv6,xt_state
ip6table_filter         2889  1
ip6_tables             19458  1 ip6table_filter
ipv6                  323408  41 ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6
dm_mod                 81692  0
raid456                69057  1
async_raid6_recov       6475  1 raid456
async_pq                4775  2 raid456,async_raid6_recov
ppdev                   8729  0
raid6_pq               79925  2 async_raid6_recov,async_pq
async_xor               3691  3 raid456,async_raid6_recov,async_pq
xor                     4687  1 async_xor
async_memcpy            2076  2 raid456,async_raid6_recov
async_tx                2924  5 raid456,async_raid6_recov,async_pq,async_xor,async_memcpy
parport_pc             22978  0
parport                37265  2 ppdev,parport_pc
asus_atk0110           14504  0
serio_raw               4818  0
sg                     30124  0
k10temp                 3577  0
shpchp                 33482  0
r8169                  51803  0
mii                     5335  1 r8169
edac_core              46773  0
edac_mce_amd           15488  0
i2c_piix4              12608  0
ext4                  371395  2
mbcache                 8144  1 ext4
jbd2                   93312  1 ext4
sata_sil24             12704  3
sd_mod                 39488  18
crc_t10dif              1541  1 sd_mod
pata_acpi               3701  0
ata_generic             3837  0
pata_atiixp             4211  0
ahci                   40871  6
radeon                846316  1
ttm                    82562  1 radeon
drm_kms_helper         34122  1 radeon
drm                   250067  3 radeon,ttm,drm_kms_helper
i2c_algo_bit            5762  1 radeon
i2c_core               31276  5 i2c_piix4,radeon,drm_kms_helper,drm,i2c_algo_bit
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
post #6 of 6
Thread Starter 
I compiled 3.6.9 and this calmed down a lot, not sure if a bug with that previous version or what.
Code:
Wakeups-from-idle per second :  8.8     interval: 10.0s
no ACPI power usage estimate available

Top causes for wakeups:
  29.6% (  3.7)      <kernel IPI> : Rescheduling interrupts
  16.0% (  2.0)         swapper/0 : add_timer_on (clocksource_watchdog)
  13.6% (  1.7)         swapper/0 : hrtimer_start_range_ns (tick_sched_timer)
  11.2% (  1.4)       <interrupt> : eth0

Seems to have saved about 3w from the wall.

Thanks for your help, though. thumb.gif
+1 invisible REP.
Edited by beers - 12/9/12 at 4:57pm
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Linux, Unix
Overclock.net › Forums › Software, Programming and Coding › Operating Systems › Linux, Unix › PowerTOP wakeups-from-idle