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2024-07-16 - 08:36
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackcslot4.osadl.org (updated Mon Jul 15, 2024 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26347182267187,28sleep00-21swapper/007:06:180
26349592244201,28sleep10-21swapper/107:08:531
27761862700,3chrt2776172-40apt-check11:10:050
27695252680,3sleep12769521-21ntp_states11:00:331
159199680,4rtkit-daemon1590-21rtkit-daemon12:33:590
263517699587,10cyclictest2687094-21diskmemload11:20:001
263517699575,21cyclictest2660961-21apt-get08:05:131
159199560,3rtkit-daemon0-21swapper/108:43:321
159199550,4rtkit-daemon1590-21rtkit-daemon10:50:280
159199550,4rtkit-daemon1590-21rtkit-daemon07:30:291
159199550,4rtkit-daemon1590-21rtkit-daemon07:30:291
159199550,1rtkit-daemon1590-21rtkit-daemon11:47:331
263517699536,14cyclictest2783650-21cat11:20:061
263517699536,11cyclictest2731552-21grep10:10:021
263517699529,12cyclictest2716731-21apt-get09:50:121
263517699527,12cyclictest2659354-21lsb_release08:03:451
263517699526,11cyclictest2687094-21diskmemload09:30:001
263517699526,10cyclictest2751037-21/usr/sbin/munin10:35:271
263517699516,9cyclictest2698410-21sed09:25:011
263517699516,12cyclictest2727923-21date10:05:011
263517699516,12cyclictest2691076-21latency_hist09:15:011
263517699516,12cyclictest2691076-21latency_hist09:15:001
263517699514,9cyclictest2700778-21kworker/u8:009:45:001
263517699505,9cyclictest2694685-21latency_hist09:20:001
28003482490,4sleep00-21swapper/011:42:290
263517699498,12cyclictest2776172-40apt-check11:10:131
263517699496,13cyclictest2742540-21sed10:25:011
263517699496,11cyclictest2687173-21sed09:10:001
159199490,3rtkit-daemon1590-21rtkit-daemon08:20:351
159199490,3rtkit-daemon0-21swapper/107:12:271
159199490,19rtkit-daemon1590-21rtkit-daemon09:31:571
28226572480,3sleep00-21swapper/012:13:260
263517699487,11cyclictest2765047-21apt-get10:55:151
263517699486,11cyclictest2735363-21date10:15:001
263517699486,10cyclictest2647895-21date07:40:011
159199480,3rtkit-daemon0-21swapper/112:21:181
159199480,3rtkit-daemon0-21swapper/110:15:051
159199480,3rtkit-daemon0-21swapper/108:55:531
159199480,3rtkit-daemon0-21swapper/108:31:071
159199480,3rtkit-daemon0-21swapper/107:41:031
263517699477,14cyclictest2743541-21/usr/sbin/munin10:25:221
263517699477,13cyclictest2841697-21sed12:40:011
263517699476,12cyclictest2757523-21sed10:45:001
263517699475,10cyclictest2641649-21latency_hist07:25:001
2635176994710,12cyclictest2822143-21ssh12:12:191
159199470,4rtkit-daemon1590-21rtkit-daemon12:29:111
159199470,4rtkit-daemon1590-21rtkit-daemon10:52:531
159199470,3rtkit-daemon0-21swapper/109:55:491
159199470,3rtkit-daemon0-21swapper/108:45:241
159199470,3rtkit-daemon0-21swapper/108:35:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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