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2026-09-02 - 18:39
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Wed Sep 02, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26970312319276,28sleep00-21swapper/007:08:120
26970442301266,20sleep10-21swapper/107:08:221
283177521600,2sleep00-21swapper/011:10:340
136599540,6rtkit-daemon0-21swapper/112:27:031
136599450,3rtkit-daemon0-21swapper/112:05:071
136599430,9rtkit-daemon2889908-21ssh12:39:571
136599430,3rtkit-daemon0-21swapper/111:35:041
136599410,3rtkit-daemon0-21swapper/111:05:141
136599390,3rtkit-daemon0-21swapper/110:43:191
27145822380,4sleep00-21swapper/007:50:210
2697338993119,7cyclictest2853013-21apt-get11:45:101
2697338992914,13cyclictest2879580-21turbostat12:25:001
269733899291,23cyclictest2749253-21python309:15:021
136599290,5rtkit-daemon2788851-21df10:10:140
2697338992811,10cyclictest2715816-21apt-get07:55:141
2697338992810,11cyclictest2739833-21apt-get08:55:151
136599280,6rtkit-daemon2795437-21ssh10:20:090
136599280,5rtkit-daemon2730636-21missed_timers08:30:190
2697338992711,10cyclictest2725667-21apt-get08:20:131
27860042260,4sleep00-21swapper/010:05:230
269733899268,17cyclictest2865967-21gpgconf12:05:011
269733899262,16cyclictest2735907-21apt-get08:45:111
269733899261,6cyclictest2795296-21cut10:20:021
2697338992611,9cyclictest2883207-21apt-get12:30:141
269733599268,12cyclictest2819978-21apt-get10:55:150
269733599262,16cyclictest2749868-21apt-get09:15:130
269733599261,4cyclictest2862746-21apt-get12:00:130
2697335992612,9cyclictest2771089-21apt-get09:45:130
27097412250,3sleep12709718-21munin-run07:40:001
269733899256,4cyclictest141rcu_preempt10:40:001
269733899253,13cyclictest938079-21snapd10:53:101
269733899251,5cyclictest2872683-21munin-run12:15:001
2697338992511,9cyclictest2776754-1kworker/u9:110:05:121
269733599255,3cyclictest141rcu_preempt09:50:180
2697335992512,8cyclictest2760542-21apt-get09:30:140
136599250,5rtkit-daemon739-21systemd-logind08:40:220
269733899241,8cyclictest2749370-21latency_hist09:15:021
269733899241,20cyclictest2729424-21python308:30:021
269733899241,20cyclictest2729424-21python308:30:021
269733899240,22cyclictest2799193-21dpkg10:25:021
269733899240,22cyclictest2799193-21dpkg10:25:011
269733599245,13cyclictest2806215-21apt-get10:35:130
269733599243,4cyclictest141rcu_preempt09:40:000
269733599243,13cyclictest2809653-21apt-get10:40:130
269733599242,15cyclictest2876334-21apt-get12:20:140
269733599242,15cyclictest2757055-21apt-get09:25:140
2697335992413,6cyclictest61750irq/132-enp2s010:00:110
2697335992411,9cyclictest2813193-21apt-get10:45:130
269733599241,18cyclictest2855508-21kworker/u8:212:10:130
136599240,3rtkit-daemon0-21swapper/009:07:580
136599240,3rtkit-daemon0-21swapper/008:15:250
136599240,17rtkit-daemon0-21swapper/110:31:021
136599240,16rtkit-daemon0-21swapper/008:00:160
269733899239,9cyclictest2843208-21apt-get11:30:131
269733899237,2cyclictest141rcu_preempt12:15:151
269733899237,2cyclictest141rcu_preempt12:15:141
269733899234,17cyclictest2782402-21ntp_states10:00:201
269733899232,7cyclictest2713855-21apt-get07:50:121
269733899232,15cyclictest2705929-21apt-get07:30:141
269733899232,14cyclictest2729999-21apt-get08:30:131
269733899232,14cyclictest2723680-21apt-get08:15:141
269733899232,14cyclictest2719760-21apt-get08:05:111
2697338992312,10cyclictest0-21swapper/109:35:291
2697338992311,5cyclictest2709935-21apt-get07:40:141
269733599239,12cyclictest13-21ksoftirqd/008:50:230
269733599234,2cyclictest141rcu_preempt09:40:120
269733599234,11cyclictest2833513-21apt-get11:15:150
269733599232,14cyclictest2886683-21apt-get12:35:120
269733599232,14cyclictest2778248-21apt-get09:55:150
2697335992313,8cyclictest2701833-21unin-run07:20:010
2697335992312,9cyclictest2793748-21sh10:16:190
269733599230,4cyclictest2881084-21unixbench_multi12:25:240
136599230,4rtkit-daemon0-21swapper/010:27:180
136599230,4rtkit-daemon0-21swapper/010:27:180
136599230,3rtkit-daemon0-21swapper/111:51:051
136599230,3rtkit-daemon0-21swapper/009:11:210
136599230,3rtkit-daemon0-21swapper/008:06:540
269733899228,9cyclictest2703967-21apt-get07:25:131
269733899226,2cyclictest141rcu_preempt11:15:001
269733899223,2cyclictest141rcu_preempt09:20:251
269733899222,14cyclictest2711896-21apt-get07:45:141
269733899222,13cyclictest2743776-21apt-get09:05:121
269733899222,13cyclictest2741814-21apt-get09:00:141
2697338992213,7cyclictest2835206-21sshd11:16:291
269733899220,4cyclictest2820790-21/usr/sbin/munin10:55:221
269733599224,2cyclictest141rcu_preempt07:45:010
269733599222,14cyclictest2856275-21apt-get11:50:110
269733599222,14cyclictest2802919-21apt-get10:30:150
269733599222,13cyclictest2823528-21apt-get11:00:110
2697335992212,6cyclictest61750irq/132-enp2s011:55:130
269733599220,4cyclictest2873963-21ssh12:15:240
269733599220,4cyclictest2873963-21ssh12:15:230
136599220,3rtkit-daemon0-21swapper/009:20:490
136599220,3rtkit-daemon0-21swapper/007:31:490
269733899213,11cyclictest2700017-21apt-get07:15:101
269733899212,13cyclictest2788631-21apt-get10:10:131
269733899212,13cyclictest2733947-21apt-get08:40:141
269733899212,13cyclictest2702005-21apt-get07:20:131
269733899211,5cyclictest2758066-21grep09:25:241
269733899211,3cyclictest2836585-1kworker/1:2H11:20:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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