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2026-08-21 - 11:49
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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 Fri Aug 21, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76222232168,21sleep10-21swapper/119:06:071
77202227164,51sleep30-21swapper/319:07:183
77912205171,23sleep20-21swapper/219:08:132
79092204171,22sleep00-21swapper/019:09:440
299121410,7sleep0822199cyclictest21:10:260
139391600,1ptp4l401ktimersoftd/323:00:183
310052580,1sleep00-21swapper/000:25:140
70462560,2sleep2311rcuc/223:35:182
139391540,1ptp4l391rcuc/321:55:493
139391540,1ptp4l391rcuc/320:46:173
307002530,3sleep20-21swapper/223:15:242
217062530,1sleep10-21swapper/120:45:111
139391520,1ptp4l391rcuc/320:37:513
41832500,2sleep20-21swapper/222:20:252
8224994641,3cyclictest30158-21latency_hist22:10:003
139391460,0ptp4l401ktimersoftd/322:10:133
139391460,0ptp4l401ktimersoftd/300:08:443
1394914533,5phc2sys0-21swapper/319:10:013
822399444,38cyclictest25386-21kworker/2:121:55:122
139391440,0ptp4l401ktimersoftd/321:40:113
139391440,0ptp4l401ktimersoftd/319:40:223
8223994329,11cyclictest33-21ksoftirqd/222:30:002
139391430,0ptp4l401ktimersoftd/300:25:203
822399420,2cyclictest121rcu_preempt20:20:012
822399420,2cyclictest121rcu_preempt20:20:012
822199421,38cyclictest13319-21cron21:35:000
822199421,38cyclictest13319-21cron21:34:590
139391420,0ptp4l401ktimersoftd/322:31:263
139391420,0ptp4l401ktimersoftd/320:33:033
8223994135,3cyclictest28560-21apt20:59:592
8223994126,13cyclictest33-21ksoftirqd/222:04:592
8223994113,26cyclictest25386-21kworker/2:120:50:232
8222994035,3cyclictest13475-21cron23:50:011
8222994033,4cyclictest25523-21irqrtprio19:45:181
8223993929,8cyclictest33-21ksoftirqd/200:25:232
8223993834,2cyclictest33-21ksoftirqd/221:45:012
8223993833,3cyclictest33-21ksoftirqd/222:55:002
8223993833,3cyclictest33-21ksoftirqd/219:45:002
8223993833,3cyclictest33-21ksoftirqd/200:00:012
8223993831,4cyclictest33-21ksoftirqd/222:10:122
8222993833,3cyclictest25-21ksoftirqd/121:00:001
8222993831,4cyclictest18207-21cron00:00:001
8223993732,3cyclictest33-21ksoftirqd/222:20:012
8223993732,3cyclictest33-21ksoftirqd/222:20:012
8223993732,3cyclictest33-21ksoftirqd/220:05:002
8223993731,3cyclictest33-21ksoftirqd/200:25:002
8222993731,3cyclictest25-21ksoftirqd/120:53:591
8222993730,5cyclictest25-21ksoftirqd/100:02:321
822399365,4cyclictest33-21ksoftirqd/221:05:182
8223993632,2cyclictest33-21ksoftirqd/220:30:002
8223993631,3cyclictest33-21ksoftirqd/222:55:122
8223993631,3cyclictest33-21ksoftirqd/220:10:002
8223993631,3cyclictest33-21ksoftirqd/219:20:172
822399361,5cyclictest33-21ksoftirqd/219:55:272
8222993630,4cyclictest25-21ksoftirqd/121:42:151
8222993630,4cyclictest25-21ksoftirqd/119:51:041
8222993630,4cyclictest25-21ksoftirqd/119:51:031
8222993629,4cyclictest25-21ksoftirqd/121:21:341
8222993629,4cyclictest25-21ksoftirqd/120:26:341
8222993629,4cyclictest25-21ksoftirqd/119:35:131
8221993631,3cyclictest9-21ksoftirqd/023:35:000
8221993631,3cyclictest9-21ksoftirqd/022:50:010
8221993631,3cyclictest9-21ksoftirqd/022:50:010
8221993631,3cyclictest9-21ksoftirqd/000:25:000
8224993529,4cyclictest41-21ksoftirqd/322:03:213
8224993529,4cyclictest41-21ksoftirqd/300:34:083
8224993512,3cyclictest24659-21egrep23:05:133
822399358,6cyclictest33-21ksoftirqd/200:15:002
822399355,3cyclictest33-21ksoftirqd/220:35:212
8223993531,3cyclictest33-21ksoftirqd/219:15:272
8223993531,3cyclictest33-21ksoftirqd/200:40:012
8223993531,2cyclictest33-21ksoftirqd/221:50:252
8223993531,2cyclictest33-21ksoftirqd/219:10:252
8223993530,3cyclictest33-21ksoftirqd/221:15:142
8223993530,3cyclictest33-21ksoftirqd/221:05:002
8223993530,3cyclictest33-21ksoftirqd/220:15:002
8223993530,2cyclictest33-21ksoftirqd/220:30:022
8223993529,4cyclictest33-21ksoftirqd/223:21:092
8223993529,3cyclictest33-21ksoftirqd/219:30:172
822399350,33cyclictest20409-21sshd21:49:392
8222993530,3cyclictest25-21ksoftirqd/122:48:151
8222993530,3cyclictest25-21ksoftirqd/122:48:151
8222993530,3cyclictest25-21ksoftirqd/100:10:121
8222993529,4cyclictest25-21ksoftirqd/122:05:111
8222993529,4cyclictest25-21ksoftirqd/121:25:401
8221993529,4cyclictest9-21ksoftirqd/023:04:020
8221993529,4cyclictest9-21ksoftirqd/022:31:570
8221993529,4cyclictest9-21ksoftirqd/022:10:440
8221993529,4cyclictest9-21ksoftirqd/020:08:030
8221993528,4cyclictest9-21ksoftirqd/020:14:020
8224993428,4cyclictest41-21ksoftirqd/323:56:493
8224993428,4cyclictest41-21ksoftirqd/321:37:123
8224993428,4cyclictest41-21ksoftirqd/321:32:563
8224993428,4cyclictest41-21ksoftirqd/321:32:563
8224993428,4cyclictest41-21ksoftirqd/321:07:123
8224993428,4cyclictest41-21ksoftirqd/320:19:023
8224993428,4cyclictest41-21ksoftirqd/320:19:013
8224993428,4cyclictest41-21ksoftirqd/300:14:473
8224993428,4cyclictest41-21ksoftirqd/300:02:393
8223993431,2cyclictest33-21ksoftirqd/222:35:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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