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2026-03-06 - 22:25
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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 rackdslot1.osadl.org (updated Fri Mar 06, 2026 12:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
982121700,6sleep02191699cyclictest11:20:210
2268621430,4sleep32191999cyclictest10:40:123
3177921420,7sleep22191899cyclictest08:40:172
2141021180,4sleep22191899cyclictest10:35:262
119042760,5sleep10-21swapper/110:15:191
134491630,5ptp4l0-21swapper/010:20:270
134491620,3ptp4l0-21swapper/212:25:302
21919996137,4cyclictest41-21ksoftirqd/312:33:093
21918996128,4cyclictest33-21ksoftirqd/209:40:002
158202610,5sleep10-21swapper/109:15:191
134491600,4ptp4l0-21swapper/107:15:211
134491590,4ptp4l0-21swapper/311:16:573
134491580,4ptp4l0-21swapper/009:55:240
134491580,4ptp4l0-21swapper/008:54:330
134491580,3ptp4l0-21swapper/112:25:141
134491580,3ptp4l0-21swapper/009:05:190
134491580,3ptp4l0-21swapper/007:50:170
21918995726,4cyclictest33-21ksoftirqd/212:25:002
134491570,4ptp4l0-21swapper/207:50:212
134491570,3ptp4l0-21swapper/110:35:281
134491570,3ptp4l0-21swapper/109:10:251
134491570,3ptp4l0-21swapper/010:50:160
134491570,3ptp4l0-21swapper/010:01:410
21919995615,7cyclictest41-21ksoftirqd/308:21:303
21918995624,3cyclictest33-21ksoftirqd/211:15:002
21919995527,4cyclictest41-21ksoftirqd/310:12:533
21919995524,3cyclictest41-21ksoftirqd/308:10:013
21919995521,4cyclictest41-21ksoftirqd/311:10:003
21918995524,4cyclictest33-21ksoftirqd/207:58:162
21918995521,4cyclictest33-21ksoftirqd/208:40:012
21919995437,2cyclictest41-21ksoftirqd/307:25:223
21919995418,7cyclictest41-21ksoftirqd/308:48:433
21919995414,9cyclictest41-21ksoftirqd/311:27:253
21918995424,4cyclictest33-21ksoftirqd/210:43:072
21918995423,3cyclictest33-21ksoftirqd/209:10:272
134491540,3ptp4l0-21swapper/011:34:490
134491540,3ptp4l0-21swapper/008:00:480
2191999532,7cyclictest0-21swapper/307:20:303
21919995318,8cyclictest41-21ksoftirqd/310:00:183
21918995318,4cyclictest33-21ksoftirqd/207:45:012
134491530,4ptp4l0-21swapper/111:20:061
247292520,1sleep124731-21date11:55:001
21919995236,4cyclictest41-21ksoftirqd/310:17:123
21919995220,7cyclictest41-21ksoftirqd/312:15:133
21919995213,9cyclictest41-21ksoftirqd/308:35:193
21918995223,4cyclictest33-21ksoftirqd/209:41:302
134491520,3ptp4l0-21swapper/109:21:121
21919995119,6cyclictest41-21ksoftirqd/310:56:123
21918995137,11cyclictest33-21ksoftirqd/209:25:002
21918995123,3cyclictest33-21ksoftirqd/210:55:292
21918995121,5cyclictest33-21ksoftirqd/207:27:482
21918995116,4cyclictest33-21ksoftirqd/207:15:242
134491510,9ptp4l20437-21irqstats07:05:240
134491510,5ptp4l0-21swapper/107:09:161
134491510,4ptp4l0-21swapper/012:33:420
134491510,3ptp4l10967-21fschecks_time09:05:161
2191999508,7cyclictest41-21ksoftirqd/309:40:003
2191999501,7cyclictest121rcu_preempt11:20:203
21919995011,3cyclictest41-21ksoftirqd/312:05:213
21919995010,7cyclictest41-21ksoftirqd/310:45:083
21918995022,4cyclictest33-21ksoftirqd/209:27:302
21918995021,8cyclictest33-21ksoftirqd/209:04:232
21918995019,3cyclictest33-21ksoftirqd/211:10:002
134691500,4getstats0-21swapper/310:30:183
134491500,4ptp4l0-21swapper/110:51:211
134491500,4ptp4l0-21swapper/108:49:531
134491500,4ptp4l0-21swapper/011:08:340
134491500,3ptp4l0-21swapper/111:10:251
134491500,3ptp4l0-21swapper/009:36:320
21919994940,3cyclictest41-21ksoftirqd/311:46:113
2191899497,8cyclictest33-21ksoftirqd/208:00:182
21918994922,4cyclictest33-21ksoftirqd/212:16:062
21918994920,4cyclictest33-21ksoftirqd/208:21:272
21918994919,4cyclictest33-21ksoftirqd/207:10:182
21918994919,3cyclictest33-21ksoftirqd/211:25:192
134491490,9ptp4l0-21swapper/009:33:030
134491490,4ptp4l0-21swapper/210:52:462
134491490,4ptp4l0-21swapper/111:00:541
134491490,4ptp4l0-21swapper/108:59:571
134491490,4ptp4l0-21swapper/009:14:490
134491490,4ptp4l0-21swapper/008:11:340
134491490,3ptp4l0-21swapper/109:29:141
134491490,3ptp4l0-21swapper/008:19:030
310912480,4sleep10-21swapper/110:55:271
2191999482,6cyclictest121rcu_preempt08:00:013
21919994826,13cyclictest41-21ksoftirqd/310:25:133
21919994819,8cyclictest41-21ksoftirqd/309:40:253
21919994815,9cyclictest41-21ksoftirqd/308:00:153
2191999481,2cyclictest121rcu_preempt10:40:013
2191999480,3cyclictest41-21ksoftirqd/307:39:593
21918994822,5cyclictest33-21ksoftirqd/208:18:062
21918994820,3cyclictest33-21ksoftirqd/207:20:192
21918994814,4cyclictest33-21ksoftirqd/212:11:502
21918994813,4cyclictest33-21ksoftirqd/212:33:572
134491480,4ptp4l0-21swapper/210:48:432
134491480,4ptp4l0-21swapper/108:43:471
134491480,4ptp4l0-21swapper/108:05:011
134491480,3ptp4l0-21swapper/308:10:163
134491480,3ptp4l0-21swapper/108:50:271
134491480,17ptp4l0-21swapper/008:29:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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