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2026-06-14 - 05:33
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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 Sun Jun 14, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1895282264187,28sleep00-21swapper/019:06:320
1897202260220,26sleep10-21swapper/119:08:331
3508212650,5sleep00-21swapper/023:43:090
179699580,4rtkit-daemon1795-21rtkit-daemon22:00:450
179699560,4rtkit-daemon1795-21rtkit-daemon22:37:421
179699510,4rtkit-daemon1795-21rtkit-daemon19:29:120
179699500,4rtkit-daemon1795-21rtkit-daemon21:01:201
3686842490,5sleep1251rcuc/100:08:191
179699490,4rtkit-daemon1795-21rtkit-daemon20:59:201
179699470,4rtkit-daemon1795-21rtkit-daemon19:53:361
2486002460,2sleep00-21swapper/021:22:310
179699460,3rtkit-daemon1795-21rtkit-daemon19:49:091
179699460,3rtkit-daemon1795-21rtkit-daemon19:49:091
19001399405,8cyclictest26-21ksoftirqd/123:55:001
19000999403,3cyclictest13-21ksoftirqd/022:00:000
19000999400,9cyclictest326439-21systemd23:10:010
179699390,3rtkit-daemon0-21swapper/019:12:440
19001399387,8cyclictest26-21ksoftirqd/122:55:001
179699380,3rtkit-daemon0-21swapper/022:22:150
19001399370,23cyclictest278879-1kworker/1:1H22:05:001
19000999373,4cyclictest13-21ksoftirqd/022:40:020
19000999370,7cyclictest13-21ksoftirqd/019:50:010
19000999370,7cyclictest13-21ksoftirqd/019:50:000
179699370,4rtkit-daemon1795-21rtkit-daemon00:33:500
179699370,3rtkit-daemon0-21swapper/000:36:550
19000999361,4cyclictest13-21ksoftirqd/021:20:010
179699360,4rtkit-daemon1795-21rtkit-daemon21:14:261
179699360,3rtkit-daemon1795-21rtkit-daemon23:58:351
179699360,3rtkit-daemon0-21swapper/023:34:540
179699360,3rtkit-daemon0-21swapper/022:07:481
19000999352,3cyclictest13-21ksoftirqd/020:40:010
179699350,5rtkit-daemon338965-21ssh23:25:441
179699350,4rtkit-daemon1795-21rtkit-daemon00:11:361
19000999341,8cyclictest234664-21apt-get21:00:140
19000999341,3cyclictest13-21ksoftirqd/021:35:000
19000999340,9cyclictest13-21ksoftirqd/020:40:180
19000999340,8cyclictest768-21irqbalance22:55:000
19000999340,8cyclictest257223-21apt-get21:35:110
19000999340,8cyclictest257223-21apt-get21:35:110
179699340,4rtkit-daemon1795-21rtkit-daemon22:30:381
179699340,4rtkit-daemon1795-21rtkit-daemon22:10:401
179699340,3rtkit-daemon0-21swapper/021:49:571
179699340,12rtkit-daemon0-21swapper/023:47:440
19001399330,8cyclictest351627-21kworker/1:000:00:251
19000999333,4cyclictest13-21ksoftirqd/022:10:000
19000999333,4cyclictest13-21ksoftirqd/000:20:010
19000999331,4cyclictest13-21ksoftirqd/019:45:000
19000999331,3cyclictest13-21ksoftirqd/023:05:010
179699330,6rtkit-daemon0-21swapper/023:19:511
179699330,5rtkit-daemon238365-21diskmemload21:50:401
179699330,4rtkit-daemon1795-21rtkit-daemon23:56:000
179699330,3rtkit-daemon0-21swapper/120:24:460
19001399324,8cyclictest26-21ksoftirqd/120:00:241
19000999324,8cyclictest13-21ksoftirqd/021:10:150
19000999321,3cyclictest13-21ksoftirqd/023:40:010
179699320,4rtkit-daemon1795-21rtkit-daemon20:51:511
179699320,4rtkit-daemon1795-21rtkit-daemon19:22:360
179699320,3rtkit-daemon1795-21rtkit-daemon21:29:031
179699320,3rtkit-daemon1795-21rtkit-daemon20:20:231
179699320,3rtkit-daemon0-21swapper/120:50:320
179699320,3rtkit-daemon0-21swapper/120:04:540
179699320,3rtkit-daemon0-21swapper/023:04:431
19000999314,2cyclictest141rcu_preempt23:15:230
19000999311,9cyclictest337453-21apt-get23:25:120
19000999311,3cyclictest13-21ksoftirqd/020:30:000
19000999310,8cyclictest13-21ksoftirqd/021:25:160
179699310,4rtkit-daemon1795-21rtkit-daemon22:29:451
179699310,3rtkit-daemon1795-21rtkit-daemon21:39:591
179699310,3rtkit-daemon1795-21rtkit-daemon21:39:591
179699310,3rtkit-daemon1795-21rtkit-daemon21:31:071
179699310,3rtkit-daemon0-21swapper/119:55:120
179699310,3rtkit-daemon0-21swapper/023:14:211
179699310,3rtkit-daemon0-21swapper/000:34:031
190013993018,9cyclictest261ksoftirqd/122:25:011
190013993011,4cyclictest26-21ksoftirqd/121:18:251
19000999308,8cyclictest13-21ksoftirqd/000:00:170
19000999308,3cyclictest141rcu_preempt23:00:000
19000999304,8cyclictest13-21ksoftirqd/022:40:220
19000999304,8cyclictest13-21ksoftirqd/022:40:210
19000999304,10cyclictest13-21ksoftirqd/019:30:150
19000999302,8cyclictest308765-21latency22:45:190
19000999302,8cyclictest13-21ksoftirqd/022:25:230
19000999300,8cyclictest283628-21rm22:10:200
19000999300,8cyclictest13-21ksoftirqd/023:10:160
19000999300,8cyclictest13-21ksoftirqd/019:15:020
179699300,3rtkit-daemon0-21swapper/119:51:450
179699300,3rtkit-daemon0-21swapper/119:36:170
190013992923,4cyclictest26-21ksoftirqd/120:45:011
19001399290,8cyclictest203523-21mailstats19:40:221
19001399290,7cyclictest251rcuc/120:05:151
19000999297,7cyclictest13-21ksoftirqd/020:55:040
19000999296,8cyclictest13-21ksoftirqd/023:52:030
19000999296,8cyclictest13-21ksoftirqd/022:32:170
19000999296,8cyclictest13-21ksoftirqd/000:10:170
190009992910,3cyclictest13-21ksoftirqd/021:48:000
19000999290,8cyclictest13-21ksoftirqd/020:15:140
19000999290,7cyclictest286272-21apt-get22:15:120
179699290,3rtkit-daemon0-21swapper/019:24:591
19000999289,4cyclictest141rcu_preempt20:05:150
19000999289,4cyclictest141rcu_preempt00:25:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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