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2026-08-30 - 17:21
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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 rackdslot3.osadl.org (updated Sun Aug 30, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242682226163,51sleep10-21swapper/107:06:181
139491217152,22phc2sys0-21swapper/307:08:553
224292208164,33sleep20-21swapper/207:05:082
242402201168,22sleep00-21swapper/007:05:580
2485099580,17cyclictest0-21swapper/009:05:200
2485099545,10cyclictest5535-21timerwakeupswit08:40:270
2485099530,11cyclictest16474-21cat08:00:020
2485099510,17cyclictest12634-21systemctl08:55:240
2485099510,12cyclictest31628-21cpuspeed_turbos10:45:130
2485099510,10cyclictest17622-21irqrtprio10:15:180
2485099500,12cyclictest27704-21awk07:15:150
2485099500,12cyclictest27704-21awk07:15:150
2485099500,11cyclictest21045-21sed12:35:280
2485099500,10cyclictest27205-21irqrtprio08:20:190
2485099490,11cyclictest13914-21timerwakeupswit12:20:250
2485099480,12cyclictest27040-21timerandwakeup09:25:260
2485299476,6cyclictest33-21ksoftirqd/210:40:282
24852994710,4cyclictest33-21ksoftirqd/207:40:002
2485099470,15cyclictest13387-21latency_hist09:00:010
2485099470,14cyclictest29694-21apt-get07:20:110
2485099470,10cyclictest24547-21awk11:35:260
24852994616,3cyclictest33-21ksoftirqd/208:45:252
2485099460,17cyclictest1593-21mailstats11:55:240
2485099460,15cyclictest8595-21apt-get11:05:110
2485099460,14cyclictest2253-21apt-get07:30:140
2485099460,14cyclictest13356-21ls07:50:240
24852994514,6cyclictest33-21ksoftirqd/211:20:002
24852994511,4cyclictest33-21ksoftirqd/208:10:192
24853994416,26cyclictest0-21swapper/310:55:233
2485399440,3cyclictest28681-21cut08:25:003
24852994413,4cyclictest33-21ksoftirqd/210:45:122
2485099440,9cyclictest32678-21apt-get09:40:130
2455924433,5sleep10-21swapper/107:10:001
24853994311,31cyclictest2827-21kworker/3:009:07:333
24852994314,2cyclictest33-21ksoftirqd/209:00:172
24852994310,5cyclictest33-21ksoftirqd/207:40:142
2485099430,7cyclictest26639-21apt-get10:35:120
2485099430,7cyclictest24883-21apt-get07:10:130
2485099430,17cyclictest9060-21cat09:55:280
139391430,0ptp4l401ktimersoftd/310:02:243
2485299423,6cyclictest33-21ksoftirqd/210:55:192
24852994229,3cyclictest33-21ksoftirqd/208:55:262
24852994213,4cyclictest33-21ksoftirqd/207:45:162
24851994237,3cyclictest31831-21turbostat.cron07:25:011
139391420,0ptp4l401ktimersoftd/312:30:223
2485299416,5cyclictest33-21ksoftirqd/210:20:002
2485299415,7cyclictest33-21ksoftirqd/210:30:262
24851994136,3cyclictest25-21ksoftirqd/110:20:001
139391410,0ptp4l401ktimersoftd/312:09:243
139391410,0ptp4l401ktimersoftd/308:01:143
2485299404,6cyclictest33-21ksoftirqd/208:10:002
2485299404,6cyclictest33-21ksoftirqd/207:25:002
24851994037,2cyclictest25-21ksoftirqd/112:30:001
2485099400,7cyclictest2518-21gnome-shell12:34:590
2485099400,16cyclictest16543-21apt-get08:00:110
139391400,0ptp4l401ktimersoftd/312:35:133
139391400,0ptp4l401ktimersoftd/309:27:023
2485299398,4cyclictest33-21ksoftirqd/209:50:012
2485299398,4cyclictest33-21ksoftirqd/209:50:012
2485299397,2cyclictest33-21ksoftirqd/209:45:262
2485299396,6cyclictest33-21ksoftirqd/208:35:242
2485299395,7cyclictest33-21ksoftirqd/210:35:132
2485299395,3cyclictest33-21ksoftirqd/207:15:172
2485299395,3cyclictest33-21ksoftirqd/207:15:172
24852993935,2cyclictest33-21ksoftirqd/209:20:002
24852993933,3cyclictest33-21ksoftirqd/212:30:202
24852993922,5cyclictest33-21ksoftirqd/212:30:002
2485299391,35cyclictest29979-21grep11:50:002
24852993910,7cyclictest33-21ksoftirqd/211:55:122
24851993935,2cyclictest25-21ksoftirqd/111:15:001
24851993935,2cyclictest25-21ksoftirqd/108:30:011
24851993934,3cyclictest25-21ksoftirqd/112:05:011
24851993934,3cyclictest25-21ksoftirqd/110:20:131
24851993934,3cyclictest25-21ksoftirqd/110:20:131
24851993933,4cyclictest25-21ksoftirqd/108:05:001
2485099390,9cyclictest23390-21ls10:25:260
2485099390,7cyclictest29375-21iostat_ios08:25:190
2485099390,7cyclictest10966-21apt-get11:10:130
139391390,0ptp4l401ktimersoftd/308:06:143
134491390,1getstats0-21swapper/311:11:193
2485299389,7cyclictest33-21ksoftirqd/209:05:152
2485299385,5cyclictest33-21ksoftirqd/208:35:012
2485299384,2cyclictest121rcu_preempt10:00:192
2485299383,6cyclictest33-21ksoftirqd/210:05:232
2485299383,6cyclictest33-21ksoftirqd/207:55:222
24852993834,2cyclictest33-21ksoftirqd/207:15:012
24852993833,3cyclictest33-21ksoftirqd/211:55:002
24852993833,3cyclictest33-21ksoftirqd/211:55:002
24852993833,3cyclictest33-21ksoftirqd/209:25:002
24852993833,3cyclictest33-21ksoftirqd/209:25:002
24852993833,3cyclictest33-21ksoftirqd/208:01:142
2485299383,2cyclictest33-21ksoftirqd/212:00:232
2485299382,5cyclictest33-21ksoftirqd/210:10:162
24851993833,3cyclictest25-21ksoftirqd/109:20:001
24851993832,3cyclictest25-21ksoftirqd/110:45:001
2485099380,7cyclictest4480-21iostat10:55:180
24853993732,3cyclictest41-21ksoftirqd/309:00:003
2485299377,2cyclictest33-21ksoftirqd/210:50:272
2485299375,4cyclictest33-21ksoftirqd/207:25:202
2485299375,2cyclictest33-21ksoftirqd/211:35:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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