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2026-03-12 - 10:26
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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 rackdslot4.osadl.org (updated Thu Mar 12, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199882228160,23sleep30-21swapper/319:06:023
200252202170,21sleep20-21swapper/219:06:282
200242202168,23sleep10-21swapper/119:06:281
202662201166,23sleep00-21swapper/019:09:360
566621750,3sleep02058899cyclictest19:45:130
64762670,2sleep10-21swapper/120:50:171
2058899670,24cyclictest8024-21latency_hist00:09:590
213162640,8sleep32059199cyclictest20:15:173
76322570,6sleep233-21ksoftirqd/220:52:192
2058899570,24cyclictest13041-21apt00:20:090
2058899570,24cyclictest13041-21apt00:20:090
2058899560,24cyclictest30609-21cstates23:50:130
138491560,1ptp4l401ktimersoftd/320:20:443
2058899540,21cyclictest23928-21runrttasks21:25:180
138491460,36ptp4l0-21swapper/319:10:023
138491460,0ptp4l401ktimersoftd/300:26:193
20588994526,16cyclictest9-21ksoftirqd/023:40:110
20590994238,2cyclictest33-21ksoftirqd/221:00:012
20590994236,4cyclictest33-21ksoftirqd/219:25:002
20590994236,3cyclictest33-21ksoftirqd/200:40:002
2058999422,37cyclictest10380-21cron19:55:011
138491420,0ptp4l401ktimersoftd/321:10:023
138491420,0ptp4l401ktimersoftd/321:02:403
20590994136,3cyclictest7588-21cron22:00:002
138491410,0ptp4l401ktimersoftd/323:15:183
2058899400,3cyclictest21358-21iostat_ios00:35:180
20591993934,3cyclictest41-21ksoftirqd/320:40:003
20590993934,3cyclictest33-21ksoftirqd/223:10:002
20590993928,9cyclictest33-21ksoftirqd/220:00:252
20590993917,14cyclictest33-21ksoftirqd/222:05:122
138491390,1ptp4l401ktimersoftd/300:17:193
20591993833,3cyclictest41-21ksoftirqd/319:35:003
20591993832,4cyclictest41-21ksoftirqd/323:02:063
20591993832,3cyclictest25034-21dump-pmu-power23:40:003
20590993833,3cyclictest33-21ksoftirqd/200:25:152
20590993827,9cyclictest33-21ksoftirqd/222:20:212
2058899380,1cyclictest0-21swapper/021:30:230
138491380,1ptp4l0-21swapper/322:28:043
20591993733,2cyclictest41-21ksoftirqd/322:20:003
20591993732,3cyclictest41-21ksoftirqd/323:25:113
20591993732,2cyclictest41-21ksoftirqd/319:50:013
2059199370,9cyclictest41-21ksoftirqd/300:10:003
20590993732,3cyclictest33-21ksoftirqd/222:59:592
20590993732,3cyclictest33-21ksoftirqd/221:55:002
20590993732,3cyclictest33-21ksoftirqd/220:49:592
20590993731,4cyclictest33-21ksoftirqd/221:43:302
2059099373,13cyclictest121rcu_preempt21:20:292
20590993726,9cyclictest33-21ksoftirqd/223:45:292
2058899370,23cyclictest0-21swapper/000:30:260
135191370,1getstats27893-1kworker/3:0H21:25:013
2059199366,2cyclictest121rcu_preempt21:45:173
20591993632,2cyclictest41-21ksoftirqd/323:00:003
20591993631,3cyclictest41-21ksoftirqd/322:35:173
20591993631,3cyclictest41-21ksoftirqd/321:30:123
20591993631,3cyclictest41-21ksoftirqd/320:49:593
20591993631,3cyclictest41-21ksoftirqd/319:20:113
20591993630,4cyclictest41-21ksoftirqd/323:10:563
20591993630,4cyclictest41-21ksoftirqd/322:09:353
20591993630,4cyclictest41-21ksoftirqd/319:16:333
20591993628,7cyclictest41-21ksoftirqd/321:44:223
20590993632,2cyclictest33-21ksoftirqd/200:19:592
20590993631,3cyclictest33-21ksoftirqd/223:35:132
20590993631,3cyclictest33-21ksoftirqd/223:15:132
20590993631,3cyclictest33-21ksoftirqd/219:19:592
20590993630,4cyclictest33-21ksoftirqd/223:40:122
20590993630,4cyclictest33-21ksoftirqd/222:28:192
20590993630,4cyclictest33-21ksoftirqd/222:12:382
20590993630,4cyclictest33-21ksoftirqd/221:18:432
20590993630,4cyclictest33-21ksoftirqd/220:10:082
20590993623,9cyclictest33-21ksoftirqd/219:30:182
20589993630,4cyclictest25-21ksoftirqd/123:39:111
20589993630,4cyclictest25-21ksoftirqd/123:25:031
20589993630,4cyclictest25-21ksoftirqd/120:43:451
20589993630,4cyclictest25-21ksoftirqd/120:09:461
20589993630,4cyclictest25-21ksoftirqd/119:48:321
20589993614,19cyclictest25-21ksoftirqd/123:10:001
20588993630,4cyclictest9-21ksoftirqd/019:10:590
20588993615,18cyclictest9624-21sendmail_mailst19:50:230
2058899361,21cyclictest14053-21meminfo23:15:210
2058899361,20cyclictest0-21swapper/021:35:190
138491360,0ptp4l401ktimersoftd/319:50:153
135191360,1getstats23054-1kworker/3:2H20:05:003
20591993530,3cyclictest41-21ksoftirqd/323:20:233
20591993530,3cyclictest41-21ksoftirqd/321:40:013
20591993530,3cyclictest41-21ksoftirqd/320:35:003
20591993530,3cyclictest41-21ksoftirqd/300:20:173
20591993530,3cyclictest41-21ksoftirqd/300:20:173
20591993529,4cyclictest41-21ksoftirqd/321:24:263
20591993529,4cyclictest41-21ksoftirqd/319:38:063
20591993529,4cyclictest41-21ksoftirqd/319:26:113
20590993530,3cyclictest33-21ksoftirqd/221:48:442
20590993530,3cyclictest33-21ksoftirqd/220:10:002
20590993529,4cyclictest33-21ksoftirqd/223:12:042
20590993529,4cyclictest33-21ksoftirqd/222:53:422
20590993529,3cyclictest33-21ksoftirqd/221:25:122
20590993529,3cyclictest33-21ksoftirqd/219:40:112
2059099350,2cyclictest0-21swapper/223:55:172
20589993529,4cyclictest25-21ksoftirqd/123:47:411
20589993529,4cyclictest25-21ksoftirqd/122:55:061
20589993529,4cyclictest25-21ksoftirqd/122:21:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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