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2026-04-14 - 11:28
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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 Tue Apr 14, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292972203168,23sleep00-21swapper/019:08:540
290702202170,21sleep10-21swapper/119:06:011
290772201168,22sleep30-21swapper/319:06:073
293272199165,23sleep20-21swapper/219:09:162
139391730,1ptp4l401ktimersoftd/321:30:283
2967899606,21cyclictest28704-21cat21:20:172
3712580,7sleep32967999cyclictest20:20:283
38882540,2sleep33893-21irqrtprio21:35:183
139391500,0ptp4l401ktimersoftd/319:37:313
134391500,1getstats0-21swapper/321:25:263
13482490,2sleep10-21swapper/119:15:271
176482480,2sleep20-21swapper/219:50:182
2967699450,4cyclictest8129-21seq23:56:020
29676994410,24cyclictest1317-21runrttasks23:50:490
2967699436,27cyclictest8301-21seq20:38:100
2967699436,27cyclictest8301-21seq20:38:100
139391430,0ptp4l401ktimersoftd/321:14:133
139391430,0ptp4l401ktimersoftd/321:05:023
139391430,0ptp4l401ktimersoftd/300:07:593
139391420,0ptp4l401ktimersoftd/320:31:583
139391420,0ptp4l401ktimersoftd/319:42:573
134391410,2getstats0-21swapper/321:00:263
29679994035,3cyclictest41-21ksoftirqd/300:14:593
29679993935,2cyclictest41-21ksoftirqd/323:19:593
29679993934,3cyclictest41-21ksoftirqd/300:00:013
29678993920,17cyclictest33-21ksoftirqd/222:50:122
29678993920,17cyclictest33-21ksoftirqd/222:50:112
2967899391,4cyclictest28869-21cron23:35:002
29676993910,18cyclictest1317-21runrttasks19:51:050
139391390,0ptp4l401ktimersoftd/323:10:113
139391390,0ptp4l401ktimersoftd/300:30:313
29679993833,3cyclictest41-21ksoftirqd/321:19:593
29679993833,3cyclictest41-21ksoftirqd/320:45:193
29679993833,3cyclictest41-21ksoftirqd/320:40:003
29679993833,3cyclictest41-21ksoftirqd/320:39:593
2967899384,32cyclictest26293-21awk23:30:002
2967699388,17cyclictest4297-21seq19:23:050
139391380,1ptp4l401ktimersoftd/322:09:043
29679993733,2cyclictest41-21ksoftirqd/319:30:013
29679993732,3cyclictest41-21ksoftirqd/321:45:003
29678993731,4cyclictest33-21ksoftirqd/220:29:062
29678993731,4cyclictest33-21ksoftirqd/219:19:182
29677993731,4cyclictest25-21ksoftirqd/121:59:461
29677993731,4cyclictest25-21ksoftirqd/121:23:351
29677993731,4cyclictest25-21ksoftirqd/120:56:131
29677993731,4cyclictest25-21ksoftirqd/120:33:181
29676993721,13cyclictest9-21ksoftirqd/000:10:100
139391370,1ptp4l391rcuc/322:17:263
139391370,0ptp4l401ktimersoftd/300:35:283
29679993633,2cyclictest41-21ksoftirqd/319:55:013
29679993632,3cyclictest41-21ksoftirqd/319:15:213
29679993631,3cyclictest41-21ksoftirqd/322:20:183
2967899369,25cyclictest1317-21runrttasks19:30:512
29678993614,19cyclictest2929-21df_inode22:40:142
29677993631,3cyclictest25-21ksoftirqd/119:36:301
29677993630,4cyclictest25-21ksoftirqd/122:21:491
29677993630,4cyclictest25-21ksoftirqd/120:38:271
29677993630,4cyclictest25-21ksoftirqd/120:38:271
29677993630,4cyclictest25-21ksoftirqd/120:12:121
29677993630,4cyclictest25-21ksoftirqd/100:04:391
29677993629,5cyclictest25-21ksoftirqd/119:33:571
57898350,2rtkit-daemon0-21swapper/123:35:051
29679993530,3cyclictest41-21ksoftirqd/323:00:013
29679993530,3cyclictest41-21ksoftirqd/322:39:593
29679993529,4cyclictest41-21ksoftirqd/320:42:313
29678993528,5cyclictest33-21ksoftirqd/220:42:382
29678993514,19cyclictest16208-21latency22:00:202
2967899351,31cyclictest0-21swapper/221:55:122
29677993530,3cyclictest25-21ksoftirqd/121:10:011
29677993529,4cyclictest25-21ksoftirqd/123:49:431
29677993529,4cyclictest25-21ksoftirqd/122:52:141
29677993529,4cyclictest25-21ksoftirqd/122:52:141
29677993529,4cyclictest25-21ksoftirqd/121:14:261
29677993529,4cyclictest25-21ksoftirqd/120:17:171
29677993529,4cyclictest25-21ksoftirqd/119:58:571
29677993529,4cyclictest25-21ksoftirqd/119:44:481
29676993530,3cyclictest9-21ksoftirqd/022:20:100
29676993530,3cyclictest9-21ksoftirqd/022:00:120
29679993429,3cyclictest9456-21cron22:55:003
29679993429,3cyclictest9456-21cron22:55:003
29679993429,3cyclictest41-21ksoftirqd/323:35:193
29679993429,3cyclictest41-21ksoftirqd/323:00:023
29679993429,3cyclictest41-21ksoftirqd/322:00:003
29679993429,3cyclictest41-21ksoftirqd/321:45:183
29679993429,3cyclictest41-21ksoftirqd/320:55:193
29679993429,3cyclictest41-21ksoftirqd/319:32:223
29679993428,4cyclictest41-21ksoftirqd/319:59:383
29679993428,3cyclictest41-21ksoftirqd/323:40:123
2967999340,2cyclictest121rcu_preempt20:15:263
29678993429,3cyclictest33-21ksoftirqd/221:50:112
29678993429,3cyclictest33-21ksoftirqd/221:06:332
29678993428,4cyclictest33-21ksoftirqd/223:06:592
29678993428,4cyclictest33-21ksoftirqd/222:32:252
29678993428,4cyclictest33-21ksoftirqd/222:25:312
29678993428,4cyclictest33-21ksoftirqd/220:55:332
29678993428,4cyclictest33-21ksoftirqd/220:49:322
29678993428,4cyclictest33-21ksoftirqd/220:02:182
29678993428,4cyclictest33-21ksoftirqd/219:48:262
2967899342,29cyclictest12308-21phc2sys-jitter00:05:222
29678993412,19cyclictest24185-21expr20:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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