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2026-03-21 - 17:11
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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 Sat Mar 21, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16830997134,5cyclictest25-21ksoftirqd/108:25:001
16830996932,4cyclictest25-21ksoftirqd/107:20:001
134491680,5ptp4l0-21swapper/310:15:123
16829996626,4cyclictest9-21ksoftirqd/007:45:260
295532650,5sleep233-21ksoftirqd/207:35:212
295532650,5sleep233-21ksoftirqd/207:35:212
16829996519,3cyclictest9-21ksoftirqd/011:45:220
16830996433,4cyclictest25-21ksoftirqd/108:00:261
16830996329,7cyclictest25-21ksoftirqd/110:20:141
16830996232,6cyclictest25-21ksoftirqd/109:50:271
16830996232,4cyclictest25-21ksoftirqd/111:00:131
16829996226,9cyclictest9-21ksoftirqd/009:55:180
16829996220,9cyclictest9-21ksoftirqd/008:15:010
273942610,4sleep10-21swapper/112:10:011
16830996133,3cyclictest25-21ksoftirqd/111:35:271
16830996131,4cyclictest25-21ksoftirqd/112:10:241
16830996130,4cyclictest25-21ksoftirqd/110:35:271
16830996128,9cyclictest25-21ksoftirqd/108:35:191
16830996128,7cyclictest25-21ksoftirqd/109:30:171
16830996126,4cyclictest25-21ksoftirqd/110:10:271
16830996122,4cyclictest25-21ksoftirqd/110:05:001
16829996130,4cyclictest9-21ksoftirqd/008:45:180
16830996029,4cyclictest25-21ksoftirqd/111:50:191
16830996028,2cyclictest25-21ksoftirqd/109:17:251
16830996027,3cyclictest25-21ksoftirqd/109:20:001
16829996031,3cyclictest9-21ksoftirqd/009:25:260
16829996028,4cyclictest9-21ksoftirqd/012:05:200
16829996018,9cyclictest9-21ksoftirqd/007:30:250
16830995932,3cyclictest25-21ksoftirqd/111:00:011
16830995930,4cyclictest25-21ksoftirqd/110:45:261
16830995930,4cyclictest25-21ksoftirqd/107:55:211
16830995928,4cyclictest25-21ksoftirqd/112:35:171
16830995928,4cyclictest25-21ksoftirqd/108:28:471
16830995925,4cyclictest25-21ksoftirqd/107:30:151
16829995918,8cyclictest9-21ksoftirqd/009:05:190
134491590,5ptp4l0-21swapper/108:55:221
134491590,4ptp4l0-21swapper/008:00:210
16830995826,3cyclictest25-21ksoftirqd/109:05:191
16830995824,4cyclictest25-21ksoftirqd/108:50:261
16830995822,3cyclictest25-21ksoftirqd/112:20:261
16830995821,6cyclictest25-21ksoftirqd/110:50:141
1682999583,6cyclictest9-21ksoftirqd/009:15:140
134491580,4ptp4l0-21swapper/211:00:262
134491580,3ptp4l0-21swapper/209:26:542
16830995727,3cyclictest25-21ksoftirqd/110:15:251
16829995726,9cyclictest9-21ksoftirqd/008:35:200
134491570,3ptp4l0-21swapper/311:05:233
134491570,3ptp4l0-21swapper/309:23:473
16830995634,7cyclictest25-21ksoftirqd/107:45:181
16830995623,6cyclictest25-21ksoftirqd/107:25:281
16830995620,7cyclictest25-21ksoftirqd/111:10:201
134491560,4ptp4l0-21swapper/310:47:583
134491560,10ptp4l0-21swapper/212:19:342
16830995524,3cyclictest25-21ksoftirqd/112:00:151
16830995516,7cyclictest25-21ksoftirqd/112:30:281
16829995524,6cyclictest9-21ksoftirqd/008:40:190
16829995524,2cyclictest9-21ksoftirqd/010:38:440
16829995522,6cyclictest9-21ksoftirqd/012:20:200
16829995522,3cyclictest9-21ksoftirqd/011:15:170
16829995510,6cyclictest9-21ksoftirqd/008:20:190
16830995424,2cyclictest25-21ksoftirqd/110:31:391
16830995422,4cyclictest25-21ksoftirqd/109:40:231
1682999545,8cyclictest9-21ksoftirqd/009:00:220
1682999545,8cyclictest0-21swapper/010:05:000
16829995428,3cyclictest9-21ksoftirqd/008:50:160
16829995419,10cyclictest9-21ksoftirqd/009:50:160
16829995416,3cyclictest9-21ksoftirqd/008:07:450
134491540,4ptp4l0-21swapper/308:38:593
134491540,4ptp4l0-21swapper/308:08:473
16830995322,3cyclictest25-21ksoftirqd/108:45:201
16830995321,3cyclictest25-21ksoftirqd/107:51:091
16830995320,6cyclictest25-21ksoftirqd/108:40:171
16830995320,3cyclictest25-21ksoftirqd/111:40:261
1682999533,9cyclictest9-21ksoftirqd/007:55:270
16829995316,8cyclictest9-21ksoftirqd/012:29:280
134491530,9ptp4l0-21swapper/308:03:353
27872520,3sleep32791-21irqrtprio11:15:183
16830995223,8cyclictest25-21ksoftirqd/110:30:011
16830995222,7cyclictest25-21ksoftirqd/107:20:251
16830995221,9cyclictest25-21ksoftirqd/108:15:111
134491520,3ptp4l0-21swapper/210:00:162
16831995126,17cyclictest33-21ksoftirqd/210:10:002
1683099517,3cyclictest25-21ksoftirqd/111:15:271
16830995136,4cyclictest25-21ksoftirqd/110:40:241
16830995136,3cyclictest25-21ksoftirqd/112:25:281
16830995136,3cyclictest25-21ksoftirqd/109:40:001
16830995118,4cyclictest25-21ksoftirqd/111:45:181
16829995133,9cyclictest9-21ksoftirqd/007:40:220
134491510,4ptp4l0-21swapper/308:40:343
134491510,4ptp4l0-21swapper/009:23:590
134491510,10ptp4l0-21swapper/307:10:223
1683099506,3cyclictest25-21ksoftirqd/108:08:391
16830995036,5cyclictest25-21ksoftirqd/111:26:051
16829995033,4cyclictest9-21ksoftirqd/010:35:010
134491500,9ptp4l14748-21diskstats07:05:141
134491500,8ptp4l2318-21gnome-shell07:05:580
134491500,4ptp4l0-21swapper/212:34:112
134491500,4ptp4l0-21swapper/010:48:040
134491500,4ptp4l0-21swapper/010:40:320
134491500,4ptp4l0-21swapper/010:07:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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