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2026-08-27 - 13:14
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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 all highest latencies:
System rack3slot6.osadl.org (updated Thu Aug 27, 2026 00:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23483998933,49cyclictest26-21ksoftirqd/121:46:541
23483998034,17cyclictest26-21ksoftirqd/119:45:221
23477998064,10cyclictest14-21ksoftirqd/020:45:120
23483997744,15cyclictest7625-21telnet00:30:141
2333727617,49sleep00-21swapper/019:09:580
2206927621,38sleep10-21swapper/119:05:181
23477997554,13cyclictest0-21swapper/022:20:140
23483997451,9cyclictest503-21snmpd23:16:471
23477997052,12cyclictest14-21ksoftirqd/019:40:120
23483996931,18cyclictest26-21ksoftirqd/119:40:351
23483996836,26cyclictest26-21ksoftirqd/121:20:161
23483996835,27cyclictest26-21ksoftirqd/119:15:081
23483996736,25cyclictest26-21ksoftirqd/122:15:161
23483996736,25cyclictest26-21ksoftirqd/120:05:171
23483996733,27cyclictest26-21ksoftirqd/122:55:351
23477996723,30cyclictest14-21ksoftirqd/020:09:450
23483996647,14cyclictest26-21ksoftirqd/119:55:271
23483996639,15cyclictest26-21ksoftirqd/120:00:151
23483996639,15cyclictest26-21ksoftirqd/120:00:151
23483996637,17cyclictest26-21ksoftirqd/120:50:151
2347799668,20cyclictest562-21runrttasks23:45:140
23477996633,17cyclictest14-21ksoftirqd/023:05:170
23483996545,14cyclictest18332-21telnet20:25:161
23483996536,22cyclictest26-21ksoftirqd/100:25:161
23483996535,24cyclictest26-21ksoftirqd/123:20:251
23483996535,24cyclictest26-21ksoftirqd/121:00:371
23483996535,24cyclictest26-21ksoftirqd/100:35:291
23483996535,24cyclictest26-21ksoftirqd/100:10:321
23483996534,25cyclictest26-21ksoftirqd/119:10:221
23483996534,24cyclictest26-21ksoftirqd/121:30:351
23483996533,26cyclictest26-21ksoftirqd/119:35:191
23483996533,26cyclictest26-21ksoftirqd/119:35:191
23483996533,25cyclictest26-21ksoftirqd/121:05:151
23483996533,25cyclictest26-21ksoftirqd/120:45:201
23483996516,14cyclictest251rcuc/123:35:111
23477996549,10cyclictest14-21ksoftirqd/022:45:100
23483996438,19cyclictest26-21ksoftirqd/123:10:171
23483996435,23cyclictest26-21ksoftirqd/122:05:311
23483996434,24cyclictest26-21ksoftirqd/123:45:301
23483996433,25cyclictest26-21ksoftirqd/121:15:311
23483996433,25cyclictest26-21ksoftirqd/120:55:351
23483996433,25cyclictest26-21ksoftirqd/120:30:311
23483996433,25cyclictest26-21ksoftirqd/119:20:231
23483996433,25cyclictest26-21ksoftirqd/119:20:231
23483996433,25cyclictest26-21ksoftirqd/100:05:361
23483996433,13cyclictest26-21ksoftirqd/119:30:141
23483996432,26cyclictest26-21ksoftirqd/123:30:131
23483996432,11cyclictest26-21ksoftirqd/122:50:131
23483996431,27cyclictest26-21ksoftirqd/121:10:151
23483996431,27cyclictest26-21ksoftirqd/120:15:351
23483996431,27cyclictest26-21ksoftirqd/120:15:351
23477996447,10cyclictest14-21ksoftirqd/021:30:120
23477996444,11cyclictest14-21ksoftirqd/020:55:150
23477996430,20cyclictest14-21ksoftirqd/000:15:440
23483996349,9cyclictest507-21ntpd21:55:311
23483996346,11cyclictest26-21ksoftirqd/119:50:201
23483996339,9cyclictest26-21ksoftirqd/120:40:011
23483996334,24cyclictest26-21ksoftirqd/122:25:171
23483996333,24cyclictest26-21ksoftirqd/100:15:251
23483996332,25cyclictest26-21ksoftirqd/123:50:271
23483996332,25cyclictest26-21ksoftirqd/100:00:351
23483996329,11cyclictest26-21ksoftirqd/122:20:221
23477996342,8cyclictest14-21ksoftirqd/000:24:320
23477996338,9cyclictest14-21ksoftirqd/020:40:350
23477996333,9cyclictest14-21ksoftirqd/021:00:280
2347799633,24cyclictest26264-21cron22:20:000
23477996318,31cyclictest14-21ksoftirqd/021:51:240
23483996237,19cyclictest26-21ksoftirqd/120:20:191
23483996237,18cyclictest26-21ksoftirqd/122:30:191
23483996232,23cyclictest26-21ksoftirqd/100:20:311
23483996232,22cyclictest26-21ksoftirqd/123:40:161
23483996232,22cyclictest26-21ksoftirqd/123:40:161
23483996230,26cyclictest26-21ksoftirqd/123:55:251
23483996230,25cyclictest26-21ksoftirqd/121:40:161
23483996229,11cyclictest26-21ksoftirqd/122:40:181
23483996219,15cyclictest26-21ksoftirqd/122:05:001
23483996138,17cyclictest26-21ksoftirqd/122:35:181
23483996137,19cyclictest26-21ksoftirqd/121:35:171
23483996137,17cyclictest26-21ksoftirqd/121:25:261
23483996136,19cyclictest26-21ksoftirqd/121:50:221
23483996136,18cyclictest26-21ksoftirqd/123:25:161
23483996136,18cyclictest26-21ksoftirqd/122:45:331
23483996135,10cyclictest26-21ksoftirqd/120:40:341
23477996139,17cyclictest14-21ksoftirqd/020:35:380
2348399607,35cyclictest151rcu_preempt19:25:181
23483996037,17cyclictest26-21ksoftirqd/123:05:261
23483996037,17cyclictest26-21ksoftirqd/122:13:011
23483996030,24cyclictest26-21ksoftirqd/123:00:341
23483996030,24cyclictest26-21ksoftirqd/120:10:331
2347799604,17cyclictest32228-21python319:30:450
2347799603,21cyclictest30909-21grep19:30:010
2347799593,20cyclictest31719-21memory00:05:290
23477995928,18cyclictest0-21swapper/022:25:140
23477995914,14cyclictest0-21swapper/023:30:130
2347799584,15cyclictest7848-21cron23:00:000
23477995835,17cyclictest28704-21grep20:55:010
23477995832,13cyclictest0-21swapper/020:15:120
23477995832,13cyclictest0-21swapper/020:15:120
23477995830,23cyclictest14-21ksoftirqd/022:10:150
23477995830,20cyclictest14-21ksoftirqd/019:15:130
2347799574,46cyclictest666-21apt-get19:35:110
2347799574,46cyclictest666-21apt-get19:35:110
23477995739,12cyclictest32528-21python322:35:330
23477995736,16cyclictest14-21ksoftirqd/020:25:160
23477995735,17cyclictest14-21ksoftirqd/019:20:140
23477995735,17cyclictest14-21ksoftirqd/019:20:140
23477995734,17cyclictest14-21ksoftirqd/023:50:330
23477995732,16cyclictest457-21dbus-daemon19:55:000
23477995730,21cyclictest14-21ksoftirqd/020:30:130
23477995729,24cyclictest14-21ksoftirqd/021:25:290
2347799564,18cyclictest23556-21apt-get19:10:120
23477995633,17cyclictest10174-21ntpq20:00:260
23477995633,17cyclictest10174-21ntpq20:00:260
23477995629,16cyclictest0-21swapper/000:25:120
23477995617,33cyclictest7591-21aten2.4-expect00:30:140
2347799556,20cyclictest3648-21apt-get21:15:140
2347799555,11cyclictest0-21swapper/023:43:010
2347799555,11cyclictest0-21swapper/023:43:010
23477995528,16cyclictest457-21dbus-daemon00:39:000
23477995518,31cyclictest0-21swapper/022:30:140
23477995515,34cyclictest243-21systemd-journal22:51:420
23477995438,11cyclictest0-21swapper/022:40:320
23477995433,17cyclictest14-21ksoftirqd/021:05:160
2347799543,12cyclictest17053-21memory20:20:270
23477995429,15cyclictest0-21swapper/019:55:110
23477995427,9cyclictest14-21ksoftirqd/021:10:100
23477995427,16cyclictest0-21swapper/022:05:110
23477995426,15cyclictest0-21swapper/023:35:140
23477995425,21cyclictest457-21dbus-daemon21:40:000
23477995425,16cyclictest0-21swapper/023:20:110
23477995415,33cyclictest14281-21aten2.4-expect21:45:160
2347799536,43cyclictest0-21swapper/000:00:270
23477995339,9cyclictest8037-21/usr/sbin/munin23:00:250
2347799533,44cyclictest4691-21irqstats19:45:250
23477995334,15cyclictest14-21ksoftirqd/000:00:040
23477995315,33cyclictest243-21systemd-journal21:21:230
2347799526,41cyclictest0-21swapper/022:00:210
2347799523,11cyclictest13609-21apt-get23:15:120
23477995229,17cyclictest14-21ksoftirqd/000:10:120
2347799515,41cyclictest0-21swapper/021:55:210
2347799515,10cyclictest0-21swapper/023:25:200
23477995124,14cyclictest0-21swapper/020:10:140
23477995122,25cyclictest14-21ksoftirqd/021:40:280
2347799503,41cyclictest12148-21/usr/sbin/munin23:10:250
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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