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2026-06-25 - 12:24
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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 highest latencies:
System rackdslot4.osadl.org (updated Thu Jun 25, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93572225166,48sleep10-21swapper/119:05:581
138591205171,23phc2sys0-21swapper/319:05:363
94402203170,22sleep20-21swapper/219:07:042
95502202168,22sleep00-21swapper/019:08:310
138491770,2ptp4l401ktimersoftd/319:10:023
996799666,12cyclictest12184-21latency_hist20:20:001
996799636,11cyclictest2592-21cpuspeed_turbos21:05:121
996799635,12cyclictest27554-21tr20:50:131
996799635,12cyclictest26718-21sed20:45:271
996799635,12cyclictest21471-21ls20:35:251
9967996310,10cyclictest18688-21ls22:40:241
996799628,10cyclictest30609-21ls23:05:201
996799628,10cyclictest11577-21ls19:10:251
996799627,11cyclictest19504-21latency_hist20:35:001
996799618,16cyclictest25914-21sed00:00:271
996799617,10cyclictest16325-21mailstats20:25:221
996799617,10cyclictest13877-21gzip19:15:231
996799615,12cyclictest0-21swapper/123:00:261
996799614,17cyclictest0-21swapper/121:50:231
996799614,16cyclictest0-21swapper/121:20:001
996799609,9cyclictest8405-21cut23:25:211
996799606,11cyclictest10338-21fschecks_count00:35:151
996799605,10cyclictest24692-21latency_hist20:45:001
996799604,17cyclictest0-21swapper/119:55:121
996799604,16cyclictest0-21swapper/123:55:241
996799597,10cyclictest28727-21ls00:05:251
996799597,10cyclictest14311-21latency_hist23:40:001
996799596,12cyclictest2337-21apt-config20:00:011
996799596,11cyclictest24614-21latency_hist20:45:001
996799595,12cyclictest23113-21irqrtprio21:45:191
996799594,10cyclictest0-21swapper/120:10:261
996799592,16cyclictest0-21swapper/122:00:221
996799586,9cyclictest15333-21cut23:40:191
996799586,11cyclictest30771-21cut20:55:161
996799585,9cyclictest0-21swapper/100:20:001
996799585,17cyclictest5428-21irqrtprio23:20:161
996799584,17cyclictest3682-21switchtime22:10:251
996799584,17cyclictest0-21swapper/123:20:001
996799584,17cyclictest0-21swapper/123:20:001
996799577,16cyclictest20963-21grep21:40:221
996799577,16cyclictest20963-21grep21:40:221
996799576,15cyclictest1325-21cat22:05:241
996799576,10cyclictest28711-21sed21:55:271
9966995727,4cyclictest9-21ksoftirqd/020:35:150
46732570,3sleep24672-21date00:24:592
138491570,1ptp4l401ktimersoftd/322:52:113
138491570,1ptp4l401ktimersoftd/322:07:493
996799569,9cyclictest24616-21grep22:55:131
996799567,16cyclictest10650-21irqrtprio22:25:191
996799566,9cyclictest31026-21phc2sys-jitter19:50:221
996799566,9cyclictest12061-21latency_hist21:25:011
9967995611,10cyclictest22640-21/usr/sbin/munin22:50:171
9966995625,6cyclictest9-21ksoftirqd/023:35:150
138491560,1ptp4l391rcuc/322:40:133
996799556,15cyclictest9547-21sed22:25:011
996799556,10cyclictest32734-21df_abs21:00:131
996799555,10cyclictest15785-21latency21:30:181
996799553,18cyclictest0-21swapper/123:35:001
996799553,10cyclictest0-21swapper/121:35:211
9966995525,4cyclictest9-21ksoftirqd/020:20:270
9966995522,6cyclictest9-21ksoftirqd/022:55:180
996799548,8cyclictest20448-21sed22:45:181
996799547,11cyclictest6560-21ls20:05:241
996799546,8cyclictest31960-21latency_hist00:15:001
996799545,10cyclictest6383-21tr00:25:241
996799544,18cyclictest0-21swapper/122:15:201
996799544,17cyclictest0-21swapper/119:35:001
996799544,11cyclictest0-21swapper/119:45:201
996799543,17cyclictest0-21swapper/122:35:181
996799543,16cyclictest0-21swapper/122:30:181
9966995425,5cyclictest9-21ksoftirqd/020:55:010
9966995424,4cyclictest9-21ksoftirqd/019:45:000
9966995421,6cyclictest9-21ksoftirqd/020:30:140
9966995326,6cyclictest9-21ksoftirqd/019:35:160
9966995324,7cyclictest9-21ksoftirqd/023:00:130
996799528,9cyclictest23622-21ps19:35:241
996799526,11cyclictest32052-21cat23:10:121
996799525,16cyclictest0-21swapper/119:20:241
996799525,15cyclictest24821-21sort19:40:131
996799525,15cyclictest19247-21latency_hist23:50:011
9966995227,11cyclictest9-21ksoftirqd/021:15:000
9966995220,5cyclictest9-21ksoftirqd/020:10:260
9966995219,4cyclictest9-21ksoftirqd/021:45:000
9966995219,4cyclictest9-21ksoftirqd/021:45:000
9966995217,5cyclictest9-21ksoftirqd/000:30:180
213892520,2sleep00-21swapper/019:30:250
996799517,16cyclictest13750-21grep21:25:221
996799516,16cyclictest18343-21irqrtprio19:25:171
9966995125,7cyclictest9-21ksoftirqd/000:00:140
9966995124,4cyclictest9-21ksoftirqd/023:15:150
9966995124,4cyclictest9-21ksoftirqd/023:15:150
9966995120,6cyclictest9-21ksoftirqd/022:30:120
9968995018,7cyclictest33-21ksoftirqd/223:25:002
996799506,10cyclictest14659-21ls20:25:001
996799504,10cyclictest9007-21sed00:30:261
9966995022,5cyclictest9-21ksoftirqd/020:40:250
9966995022,5cyclictest9-21ksoftirqd/020:40:250
9966995022,3cyclictest9-21ksoftirqd/021:30:130
9966995019,5cyclictest9-21ksoftirqd/019:20:170
9966995016,10cyclictest9-21ksoftirqd/022:15:230
9968994918,28cyclictest16194-21systemctl21:30:232
9966994920,6cyclictest9-21ksoftirqd/023:45:000
9966994920,5cyclictest9-21ksoftirqd/023:50:190
9966994916,7cyclictest9-21ksoftirqd/021:05:230
9966994915,4cyclictest9-21ksoftirqd/023:20:160
9966994915,4cyclictest9-21ksoftirqd/000:05:120
9968994827,9cyclictest33-21ksoftirqd/222:15:232
996799487,15cyclictest3836-21expr00:20:241
9966994836,3cyclictest9-21ksoftirqd/022:15:000
996699482,3cyclictest9-21ksoftirqd/000:20:000
9966994821,8cyclictest9-21ksoftirqd/000:20:160
9966994819,4cyclictest9-21ksoftirqd/022:00:140
9966994818,5cyclictest9-21ksoftirqd/023:55:220
9966994818,5cyclictest9-21ksoftirqd/020:45:140
9968994716,4cyclictest33-21ksoftirqd/220:10:212
9968994710,5cyclictest33-21ksoftirqd/223:55:002
9966994728,9cyclictest9-21ksoftirqd/020:55:240
9966994720,3cyclictest9-21ksoftirqd/019:55:140
9966994719,3cyclictest9-21ksoftirqd/021:35:190
9966994718,4cyclictest9-21ksoftirqd/021:55:140
9966994716,4cyclictest9-21ksoftirqd/021:30:000
9966994712,4cyclictest9-21ksoftirqd/022:45:000
9968994626,9cyclictest33-21ksoftirqd/219:35:272
9968994616,15cyclictest33-21ksoftirqd/220:00:012
996699462,3cyclictest9-21ksoftirqd/019:10:200
9966994615,4cyclictest9-21ksoftirqd/000:29:590
996699461,3cyclictest121rcu_preempt21:15:180
9966994611,7cyclictest9-21ksoftirqd/021:00:170
9968994516,7cyclictest33-21ksoftirqd/222:40:142
9968994511,4cyclictest33-21ksoftirqd/200:35:242
9966994527,5cyclictest9-21ksoftirqd/022:25:250
9966994520,7cyclictest9-21ksoftirqd/019:45:190
9966994517,6cyclictest9-21ksoftirqd/023:25:130
9966994517,3cyclictest9-21ksoftirqd/019:30:020
996699451,3cyclictest121rcu_preempt23:10:210
9968994412,4cyclictest33-21ksoftirqd/223:00:012
9968994412,4cyclictest33-21ksoftirqd/221:30:002
996799445,7cyclictest20675-21ps23:50:231
9966994430,4cyclictest9-21ksoftirqd/000:15:010
996699442,7cyclictest121rcu_preempt22:45:120
996699442,5cyclictest121rcu_preempt23:45:190
996699442,2cyclictest9-21ksoftirqd/022:20:150
9966994414,7cyclictest9-21ksoftirqd/019:15:150
996699441,3cyclictest9-21ksoftirqd/023:05:140
996699441,3cyclictest121rcu_preempt22:05:150
138491440,0ptp4l401ktimersoftd/319:53:153
996899439,6cyclictest33-21ksoftirqd/220:00:132
996899435,7cyclictest33-21ksoftirqd/221:15:152
9968994317,7cyclictest33-21ksoftirqd/219:50:162
9968994312,4cyclictest33-21ksoftirqd/222:20:132
9966994333,3cyclictest9-21ksoftirqd/021:20:200
996699432,2cyclictest121rcu_preempt23:30:180
996699431,3cyclictest9-21ksoftirqd/022:50:150
996699431,3cyclictest9-21ksoftirqd/020:05:260
996699431,3cyclictest121rcu_preempt19:50:250
9966994310,3cyclictest9-21ksoftirqd/020:15:280
138491430,0ptp4l401ktimersoftd/320:35:003
996899429,4cyclictest33-21ksoftirqd/221:20:162
996899428,5cyclictest33-21ksoftirqd/219:45:002
9968994213,7cyclictest33-21ksoftirqd/221:15:002
9968994212,7cyclictest33-21ksoftirqd/222:35:252
9968994212,4cyclictest33-21ksoftirqd/222:50:002
9968994211,10cyclictest33-21ksoftirqd/200:25:132
996799426,16cyclictest7264-21latency_hist21:15:001
138491420,0ptp4l401ktimersoftd/323:05:143
9968994112,4cyclictest33-21ksoftirqd/220:35:182
9968994112,4cyclictest33-21ksoftirqd/219:20:202
9968994111,7cyclictest33-21ksoftirqd/220:15:142
9968994110,7cyclictest33-21ksoftirqd/223:15:252
9968994110,7cyclictest33-21ksoftirqd/223:15:252
9968994110,7cyclictest33-21ksoftirqd/220:40:262
9968994110,7cyclictest33-21ksoftirqd/220:40:252
9968994110,4cyclictest33-21ksoftirqd/223:05:202
996699418,4cyclictest9-21ksoftirqd/020:25:240
9966994110,4cyclictest9-21ksoftirqd/022:35:130
138491410,0ptp4l401ktimersoftd/321:46:563
9968994035,3cyclictest14173-21awk23:40:002
9968994027,5cyclictest33-21ksoftirqd/219:35:002
9968994026,11cyclictest33-21ksoftirqd/223:00:132
9968994012,7cyclictest33-21ksoftirqd/221:50:182
9968994012,7cyclictest33-21ksoftirqd/220:05:182
9968994012,7cyclictest33-21ksoftirqd/219:15:132
9968994011,4cyclictest33-21ksoftirqd/222:50:272
9968994011,3cyclictest33-21ksoftirqd/200:16:172
9968993934,3cyclictest33-21ksoftirqd/222:00:252
9968993934,3cyclictest33-21ksoftirqd/200:05:012
9968993933,3cyclictest33-21ksoftirqd/200:10:152
9968993933,3cyclictest21894-21sh21:45:002
9968993933,3cyclictest21894-21sh21:45:002
996899392,2cyclictest121rcu_preempt19:10:472
996899391,7cyclictest33-21ksoftirqd/223:30:212
9968993914,4cyclictest33-21ksoftirqd/223:28:382
9968993910,7cyclictest33-21ksoftirqd/221:05:262
9968993910,7cyclictest33-21ksoftirqd/219:45:182
9968993910,6cyclictest33-21ksoftirqd/222:25:192
996699392,3cyclictest9-21ksoftirqd/021:50:200
9966993922,9cyclictest9-21ksoftirqd/021:45:230
996899389,4cyclictest33-21ksoftirqd/223:48:412
996899386,6cyclictest33-21ksoftirqd/219:25:162
9968993833,3cyclictest33-21ksoftirqd/221:00:232
9968993833,3cyclictest33-21ksoftirqd/220:55:122
9968993833,3cyclictest33-21ksoftirqd/200:00:002
996699383,3cyclictest121rcu_preempt20:00:130
135191380,1getstats7190-1kworker/3:2H22:45:283
9969993731,4cyclictest41-21ksoftirqd/319:40:313
996899378,6cyclictest33-21ksoftirqd/220:20:142
996899376,7cyclictest33-21ksoftirqd/200:05:262
9968993732,3cyclictest33-21ksoftirqd/220:30:182
9968993731,3cyclictest33-21ksoftirqd/222:15:002
9968993730,4cyclictest33-21ksoftirqd/223:14:002
9968993726,3cyclictest33-21ksoftirqd/221:49:102
9968993721,4cyclictest33-21ksoftirqd/220:45:232
996899371,6cyclictest33-21ksoftirqd/220:55:012
9968993713,7cyclictest33-21ksoftirqd/221:35:142
9968993712,7cyclictest33-21ksoftirqd/222:05:152
9968993710,7cyclictest33-21ksoftirqd/220:25:242
996699377,8cyclictest9-21ksoftirqd/000:35:130
9969993631,3cyclictest41-21ksoftirqd/300:40:003
9969993630,4cyclictest41-21ksoftirqd/300:23:173
996899367,3cyclictest33-21ksoftirqd/223:40:262
9968993631,3cyclictest33-21ksoftirqd/200:31:212
135191360,1getstats7190-1kworker/3:2H22:20:273
9969993530,3cyclictest41-21ksoftirqd/321:53:333
9969993529,4cyclictest41-21ksoftirqd/323:52:483
9969993529,4cyclictest41-21ksoftirqd/323:25:473
9969993529,4cyclictest41-21ksoftirqd/323:20:083
9969993529,4cyclictest41-21ksoftirqd/321:29:543
9969993529,4cyclictest41-21ksoftirqd/320:07:423
9969993529,4cyclictest41-21ksoftirqd/320:01:413
9969993529,4cyclictest41-21ksoftirqd/319:18:203
9969993529,4cyclictest41-21ksoftirqd/300:31:303
9969993529,4cyclictest41-21ksoftirqd/300:01:343
138491350,0ptp4l401ktimersoftd/322:30:223
9969993429,3cyclictest41-21ksoftirqd/319:21:173
9969993428,4cyclictest41-21ksoftirqd/323:34:013
9969993428,4cyclictest41-21ksoftirqd/322:11:473
9969993428,4cyclictest41-21ksoftirqd/321:32:393
9969993428,4cyclictest41-21ksoftirqd/321:00:103
9969993428,4cyclictest41-21ksoftirqd/300:25:423
9969993428,4cyclictest41-21ksoftirqd/300:16:433
9969993428,4cyclictest41-21ksoftirqd/300:07:313
9969993416,16cyclictest41-21ksoftirqd/300:00:003
9968993430,2cyclictest33-21ksoftirqd/222:35:002
9968993429,3cyclictest33-21ksoftirqd/221:58:072
138491340,0ptp4l401ktimersoftd/319:47:393
9969993328,3cyclictest41-21ksoftirqd/322:35:393
9969993328,3cyclictest41-21ksoftirqd/319:35:223
9969993327,4cyclictest41-21ksoftirqd/323:40:243
9969993327,4cyclictest41-21ksoftirqd/321:56:183
9969993327,4cyclictest41-21ksoftirqd/320:50:593
9969993327,4cyclictest41-21ksoftirqd/320:30:333
9969993327,4cyclictest41-21ksoftirqd/320:17:413
9969993327,3cyclictest9654-21basename20:15:003
138491330,0ptp4l401ktimersoftd/319:55:133
9969993227,4cyclictest41-21ksoftirqd/323:46:403
9969993227,3cyclictest41-21ksoftirqd/322:18:463
9969993226,4cyclictest41-21ksoftirqd/322:01:113
9969993226,4cyclictest41-21ksoftirqd/321:13:293
9969993226,4cyclictest41-21ksoftirqd/320:20:343
9969993126,3cyclictest41-21ksoftirqd/320:55:103
9969993125,4cyclictest41-21ksoftirqd/321:21:283
9969993125,4cyclictest41-21ksoftirqd/319:27:233
138491310,8ptp4l401ktimersoftd/322:55:403
9969993025,3cyclictest41-21ksoftirqd/321:15:313
9969993024,3cyclictest41-21ksoftirqd/323:10:103
9969993020,8cyclictest41-21ksoftirqd/322:29:493
138491300,0ptp4l401ktimersoftd/300:14:563
9969992924,3cyclictest41-21ksoftirqd/320:40:413
9969992924,3cyclictest41-21ksoftirqd/320:40:413
9969992923,4cyclictest41-21ksoftirqd/323:02:573
9969992923,4cyclictest41-21ksoftirqd/321:35:593
138491290,0ptp4l401ktimersoftd/323:35:123
138491290,0ptp4l401ktimersoftd/321:41:133
138491290,0ptp4l401ktimersoftd/321:41:133
138491290,0ptp4l401ktimersoftd/321:09:513
138491280,0ptp4l401ktimersoftd/319:33:493
138491260,0ptp4l401ktimersoftd/320:47:363
9969992520,4cyclictest41-21ksoftirqd/323:15:203
9969992520,4cyclictest41-21ksoftirqd/323:15:203
138491240,0ptp4l401ktimersoftd/320:27:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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