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2025-12-13 - 23:26
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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 Sat Dec 13, 2025 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30015102264188,27sleep10-21swapper/107:06:421
30017512252188,48sleep00-21swapper/007:09:190
30892872500,1chrt3089286-21/usr/sbin/munin10:45:190
179699440,3rtkit-daemon0-21swapper/110:22:361
179699440,3rtkit-daemon0-21swapper/107:26:451
179699430,3rtkit-daemon0-21swapper/108:01:551
300194599419,3cyclictest141rcu_preempt10:30:000
300194899408,9cyclictest26-21ksoftirqd/107:50:011
300194899407,8cyclictest26-21ksoftirqd/107:40:011
300194599402,11cyclictest3010696-40apt-check07:30:100
3001945993910,3cyclictest141rcu_preempt10:05:000
3001945993910,3cyclictest141rcu_preempt10:05:000
179699390,3rtkit-daemon0-21swapper/107:32:241
300194899388,9cyclictest3114476-21grep11:50:011
3001948993813,4cyclictest26-21ksoftirqd/110:45:001
300194599388,3cyclictest141rcu_preempt10:55:010
179699380,3rtkit-daemon0-21swapper/109:55:451
179699380,3rtkit-daemon0-21swapper/107:59:271
300194899378,9cyclictest26-21ksoftirqd/111:15:001
300194899377,8cyclictest26-21ksoftirqd/112:30:001
3001945993710,3cyclictest141rcu_preempt10:15:230
3001945993710,3cyclictest141rcu_preempt10:15:230
3001945993710,3cyclictest141rcu_preempt09:35:140
3001945993710,3cyclictest141rcu_preempt09:25:010
3001945993710,3cyclictest141rcu_preempt09:25:000
300194899368,8cyclictest26-21ksoftirqd/112:40:011
300194899367,8cyclictest26-21ksoftirqd/110:25:011
3001945993610,3cyclictest141rcu_preempt07:20:010
300194899357,9cyclictest3074592-21grep10:10:001
300194899357,9cyclictest26-21ksoftirqd/109:00:011
300194899357,10cyclictest3078364-21apt-get10:20:011
300194899357,10cyclictest3078364-21apt-get10:20:001
300194899356,8cyclictest3108622-21wc11:35:011
3001948993530,3cyclictest893-21snmpd10:36:491
300194599359,3cyclictest141rcu_preempt12:20:010
300194599359,3cyclictest141rcu_preempt11:55:000
300194599359,3cyclictest141rcu_preempt08:25:010
300194599358,3cyclictest141rcu_preempt08:40:010
300194899348,9cyclictest26-21ksoftirqd/108:05:031
300194899343,4cyclictest26-21ksoftirqd/109:50:011
300194899342,19cyclictest26-21ksoftirqd/111:15:171
300194599349,3cyclictest141rcu_preempt11:35:010
300194599349,3cyclictest141rcu_preempt08:55:240
300194599347,3cyclictest141rcu_preempt12:00:000
179699340,1rtkit-daemon1795-21rtkit-daemon10:04:121
179699340,1rtkit-daemon1795-21rtkit-daemon10:04:111
300194899338,10cyclictest3097476-21sendmail_mailst11:05:231
300194899338,10cyclictest26-21ksoftirqd/109:02:431
300194899337,8cyclictest26-21ksoftirqd/108:15:241
300194899337,3cyclictest141rcu_preempt11:45:011
300194899337,10cyclictest26-21ksoftirqd/108:29:011
300194899333,5cyclictest26-21ksoftirqd/108:20:171
300194599339,3cyclictest141rcu_preempt11:10:020
300194599339,3cyclictest141rcu_preempt09:15:010
300194599338,3cyclictest141rcu_preempt07:55:010
300194599337,17cyclictest141rcu_preempt09:40:220
300194599337,11cyclictest141rcu_preempt12:35:140
179699330,20rtkit-daemon30308992sleep008:17:140
300194899329,9cyclictest26-21ksoftirqd/111:02:501
300194899329,2cyclictest66950irq/132-enp2s008:11:151
300194899328,9cyclictest3059599-21irqstats09:30:181
300194899328,2cyclictest141rcu_preempt08:32:361
300194899328,10cyclictest3090114-21taskset10:46:121
300194899327,9cyclictest3050586-21sed09:05:251
300194899327,7cyclictest3130161-21acpi12:30:111
300194899327,10cyclictest26-21ksoftirqd/111:22:591
300194899325,8cyclictest26-21ksoftirqd/109:40:001
300194599329,3cyclictest141rcu_preempt11:45:250
300194599329,3cyclictest141rcu_preempt11:10:010
300194599329,3cyclictest141rcu_preempt10:20:030
300194599328,3cyclictest141rcu_preempt09:50:240
300194599327,11cyclictest141rcu_preempt10:35:150
300194599327,11cyclictest141rcu_preempt10:30:140
300194599326,11cyclictest141rcu_preempt10:55:120
3001945993211,3cyclictest141rcu_preempt09:25:170
3001945993210,3cyclictest141rcu_preempt12:20:170
179699320,4rtkit-daemon1795-21rtkit-daemon11:43:100
300194899318,9cyclictest26-21ksoftirqd/111:25:091
300194899318,9cyclictest26-21ksoftirqd/109:10:051
300194899318,9cyclictest26-21ksoftirqd/107:20:351
300194899318,8cyclictest26-21ksoftirqd/112:08:011
300194899318,11cyclictest3124016-21taskset12:14:031
300194899318,10cyclictest3083942-21sed10:30:251
300194899318,10cyclictest3058551-21seq09:26:371
300194899318,10cyclictest26-21ksoftirqd/112:04:101
300194899318,10cyclictest26-21ksoftirqd/111:50:351
300194899318,10cyclictest26-21ksoftirqd/110:56:231
300194899318,10cyclictest26-21ksoftirqd/110:51:561
300194899318,10cyclictest26-21ksoftirqd/108:54:131
300194899318,10cyclictest26-21ksoftirqd/108:35:111
300194899318,10cyclictest26-21ksoftirqd/107:50:431
300194899318,10cyclictest26-21ksoftirqd/107:18:421
300194899318,10cyclictest26-21ksoftirqd/107:14:551
300194899317,10cyclictest3127762-21taskset12:22:151
300194899317,10cyclictest3068180-21vmstat09:50:251
300194899317,10cyclictest26-21ksoftirqd/108:40:441
300194899315,8cyclictest26-21ksoftirqd/109:20:241
300194899315,8cyclictest26-21ksoftirqd/109:20:231
300194599318,3cyclictest141rcu_preempt12:35:010
300194599318,10cyclictest141rcu_preempt11:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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