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2026-06-24 - 17:10
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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 rackdslot1.osadl.org (updated Wed Jun 24, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
813599710,27cyclictest606-21grep11:30:190
813599710,26cyclictest8339-21grep07:10:130
813599682,26cyclictest0-21swapper/011:50:160
813599656,17cyclictest24359-21timerandwakeup11:10:270
813599650,21cyclictest26494-21expr12:25:190
134491650,5ptp4l0-21swapper/207:15:182
813599642,26cyclictest3268-21seq09:15:450
813599631,26cyclictest29933-21seq12:32:070
813599630,26cyclictest20492-21taskset12:11:510
813599630,25cyclictest26654-21seq10:06:520
813599622,23cyclictest0-21swapper/009:43:100
813599620,26cyclictest6103-21seq11:40:360
813599620,25cyclictest5845-21seq08:13:320
813599620,25cyclictest4043-21seq11:38:470
813599620,25cyclictest3653-21seq08:09:500
813599620,25cyclictest1360-21seq10:24:260
813599620,22cyclictest18188-21grep08:40:160
813599610,26cyclictest26613-21seq08:58:240
813599610,25cyclictest25240-21seq12:23:360
813599610,25cyclictest1126-21seq08:02:520
813599610,22cyclictest10534-21cpuspeed07:15:120
813599602,21cyclictest0-21swapper/009:51:070
813599601,26cyclictest31114-21taskset09:07:020
813599601,18cyclictest31859-21expr12:35:250
813599600,26cyclictest28934-21taskset10:11:410
813599600,26cyclictest10420-21seq09:31:020
813599600,25cyclictest5668-21seq09:21:510
813599600,25cyclictest31864-21seq11:29:450
813599600,25cyclictest27125-21seq11:18:170
813599600,24cyclictest22236-21runrttasks09:59:180
134491600,5ptp4l4915-21sed08:10:211
134491600,5ptp4l0-21swapper/212:05:222
8136995926,6cyclictest25-21ksoftirqd/112:00:001
813599592,22cyclictest0-21swapper/010:36:500
813599592,18cyclictest0-21swapper/012:00:000
813599590,26cyclictest29010-21seq07:53:490
813599590,26cyclictest22613-21seq11:09:150
813599590,25cyclictest29505-21seq11:23:550
813599590,24cyclictest21954-21seq07:39:410
134491590,4ptp4l0-21swapper/209:30:262
134491590,4ptp4l0-21swapper/209:05:142
8136995827,3cyclictest25-21ksoftirqd/109:10:251
813599583,20cyclictest0-21swapper/007:32:060
813599582,22cyclictest0-21swapper/011:47:370
813599580,26cyclictest28878-21seq09:02:500
813599580,20cyclictest10027-21cat08:20:270
134491580,4ptp4l0-21swapper/212:21:032
134491580,4ptp4l0-21swapper/208:20:232
134491580,3ptp4l0-21swapper/308:00:253
813599573,21cyclictest0-21swapper/008:33:160
813599572,21cyclictest0-21swapper/008:46:340
813599571,25cyclictest3513-21taskset10:26:450
813599570,26cyclictest15727-21seq10:54:340
813599570,25cyclictest26583-21seq07:47:120
134491570,4ptp4l0-21swapper/308:40:243
134491570,3ptp4l0-21swapper/310:43:583
134491570,3ptp4l0-21swapper/308:23:423
134491570,3ptp4l0-21swapper/212:10:132
813599562,21cyclictest0-21swapper/009:11:130
813599560,27cyclictest14942-21taskset12:00:240
813599560,26cyclictest5732-21seq10:30:470
813599560,25cyclictest17678-21seq09:49:430
813599560,19cyclictest6806-21perl09:25:140
813599560,18cyclictest16285-21ls07:25:180
134491560,4ptp4l0-21swapper/311:30:013
134491560,4ptp4l0-21swapper/210:56:472
134491560,4ptp4l0-21swapper/208:15:242
134491560,3ptp4l0-21swapper/208:32:422
134491550,4ptp4l0-21swapper/310:36:143
134491550,4ptp4l0-21swapper/208:55:062
134491550,3ptp4l675-21wc08:00:272
134491550,3ptp4l0-21swapper/211:01:032
134491550,3ptp4l0-21swapper/208:43:152
813599542,21cyclictest0-21swapper/010:43:000
813599540,29cyclictest16581-21ntpq08:35:240
813599540,26cyclictest20075-21taskset11:01:150
134491540,4ptp4l0-21swapper/208:25:322
134491540,3ptp4l0-21swapper/210:40:042
134491540,3ptp4l0-21swapper/208:36:202
8136995319,4cyclictest25-21ksoftirqd/110:15:001
8136995316,7cyclictest25-21ksoftirqd/111:30:001
813599532,23cyclictest0-21swapper/010:00:360
813599532,23cyclictest0-21swapper/008:26:320
813599532,22cyclictest0-21swapper/007:42:230
813599530,25cyclictest12723-21runrttasks09:36:070
134491530,4ptp4l0-21swapper/311:51:493
134491530,3ptp4l11353-21if_enp4s008:25:183
134491530,3ptp4l0-21swapper/210:50:262
134491530,3ptp4l0-21swapper/209:56:012
8136995237,4cyclictest25-21ksoftirqd/107:30:001
813599522,22cyclictest0-21swapper/010:58:160
813599520,25cyclictest24270-21taskset08:52:540
813599520,25cyclictest24270-21taskset08:52:540
134491520,4ptp4l0-21swapper/208:05:172
134491520,4ptp4l0-21swapper/112:30:391
8136995115,5cyclictest25-21ksoftirqd/110:55:001
813599512,22cyclictest0-21swapper/007:24:260
134491510,4ptp4l0-21swapper/211:58:202
134491510,4ptp4l0-21swapper/211:05:382
134491510,4ptp4l0-21swapper/210:37:252
134491510,4ptp4l0-21swapper/207:57:342
134491510,4ptp4l0-21swapper/111:23:331
8136995018,3cyclictest25-21ksoftirqd/109:25:161
813599502,23cyclictest0-21swapper/010:16:560
134491500,9ptp4l6747-21meminfo07:05:190
134491500,9ptp4l6107-21diskstats07:05:141
134491500,4ptp4l0-21swapper/210:26:012
134491500,3ptp4l0-21swapper/111:49:211
8136994918,4cyclictest25-21ksoftirqd/108:35:171
8136994913,4cyclictest25-21ksoftirqd/110:45:181
8136994913,4cyclictest25-21ksoftirqd/110:35:011
134491490,4ptp4l0-21swapper/208:47:422
134491490,4ptp4l0-21swapper/112:06:471
134491490,4ptp4l0-21swapper/109:58:381
134491490,4ptp4l0-21swapper/109:41:131
134491490,3ptp4l0-21swapper/310:13:123
134491490,3ptp4l0-21swapper/211:28:452
134491490,3ptp4l0-21swapper/209:45:192
134491490,20ptp4l16088-21cut08:35:203
8136994819,7cyclictest25-21ksoftirqd/110:40:241
8136994817,4cyclictest25-21ksoftirqd/108:40:311
8136994817,4cyclictest25-21ksoftirqd/107:12:411
8136994816,3cyclictest25-21ksoftirqd/111:31:531
8136994810,4cyclictest25-21ksoftirqd/110:55:201
134491480,5ptp4l0-21swapper/111:11:581
134491480,4ptp4l0-21swapper/111:35:181
8136994717,4cyclictest25-21ksoftirqd/107:47:201
8136994716,4cyclictest25-21ksoftirqd/109:20:251
8136994712,5cyclictest25-21ksoftirqd/107:40:251
134491470,4ptp4l0-21swapper/108:22:481
134491470,3ptp4l0-21swapper/308:30:373
134491470,3ptp4l0-21swapper/210:19:442
134491470,3ptp4l0-21swapper/209:13:002
8136994631,3cyclictest25-21ksoftirqd/110:35:131
8136994616,5cyclictest25-21ksoftirqd/107:35:441
8136994616,4cyclictest25-21ksoftirqd/109:35:011
8136994614,5cyclictest25-21ksoftirqd/109:45:241
8136994613,4cyclictest25-21ksoftirqd/107:15:201
8136994612,4cyclictest25-21ksoftirqd/110:25:131
134491460,4ptp4l0-21swapper/209:03:222
134491460,3ptp4l0-21swapper/309:25:263
134491460,3ptp4l0-21swapper/112:38:581
134491460,10ptp4l0-21swapper/108:30:201
813699455,9cyclictest25-21ksoftirqd/108:25:161
8136994515,4cyclictest25-21ksoftirqd/110:05:231
813599450,17cyclictest17361-21phc2sys12:05:240
134491450,4ptp4l0-21swapper/209:54:472
8136994414,3cyclictest25-21ksoftirqd/111:40:261
8136994413,8cyclictest25-21ksoftirqd/108:15:201
8136994413,7cyclictest25-21ksoftirqd/110:00:131
8136994412,7cyclictest25-21ksoftirqd/108:50:201
8136994412,7cyclictest25-21ksoftirqd/108:50:201
134491440,7ptp4l0-21swapper/210:30:252
134491440,4ptp4l0-21swapper/208:13:032
134491440,3ptp4l0-21swapper/212:03:542
134491440,3ptp4l0-21swapper/112:25:251
134491440,22ptp4l0-21swapper/207:40:072
8136994327,3cyclictest25-21ksoftirqd/109:00:191
8136994316,7cyclictest25-21ksoftirqd/111:05:241
8136994315,8cyclictest25-21ksoftirqd/107:55:001
8136994312,7cyclictest25-21ksoftirqd/112:00:201
8136994312,6cyclictest25-21ksoftirqd/110:15:151
137891431,2phc2sys121rcu_preempt10:26:553
134491430,9ptp4l0-21swapper/309:48:073
134491430,9ptp4l0-21swapper/211:33:212
134491430,9ptp4l0-21swapper/211:16:562
134491430,9ptp4l0-21swapper/207:46:192
134491430,5ptp4l23533-21wc07:40:263
134491430,4ptp4l14860-21ls09:40:262
134491430,4ptp4l0-21swapper/211:41:352
134491430,4ptp4l0-21swapper/112:24:541
134491430,3ptp4l0-21swapper/309:00:083
134491430,10ptp4l0-21swapper/207:28:202
813699428,5cyclictest25-21ksoftirqd/107:20:151
8136994210,7cyclictest25-21ksoftirqd/108:05:171
134491420,9ptp4l0-21swapper/210:07:382
134491420,9ptp4l0-21swapper/209:19:582
134491420,5ptp4l0-21swapper/309:20:163
134491420,4ptp4l18524-21iostat_ios09:50:183
134491420,4ptp4l0-21swapper/311:15:153
813699416,7cyclictest25-21ksoftirqd/109:50:131
8136994135,3cyclictest25-21ksoftirqd/111:01:591
8136994111,7cyclictest25-21ksoftirqd/108:00:151
813699410,2cyclictest121rcu_preempt09:38:401
134491410,4ptp4l9258-21iostat09:30:183
134491410,4ptp4l3644-21perf09:20:003
134491410,4ptp4l2396-21diskstats11:35:163
134491410,4ptp4l20314-21df08:45:143
134491410,4ptp4l18700-21apt-get12:10:123
134491410,4ptp4l12784-21apt-get07:20:112
134491410,4ptp4l0-21swapper/309:35:173
134491410,4ptp4l0-21swapper/309:10:113
134491410,4ptp4l0-21swapper/207:12:202
134491410,4ptp4l0-21swapper/109:19:381
134491410,3ptp4l6920-21apt-get11:45:112
134491410,3ptp4l6215-21apt-get08:15:130
134491410,3ptp4l14937-21strings12:00:253
8138994035,3cyclictest41-21ksoftirqd/310:54:453
8136994036,2cyclictest24857-21cpuspeed_turbos08:55:121
8136994035,3cyclictest25-21ksoftirqd/112:15:131
8136994035,3cyclictest25-21ksoftirqd/108:45:221
8136994034,3cyclictest25-21ksoftirqd/111:19:111
813699402,4cyclictest25-21ksoftirqd/107:55:081
134491400,6ptp4l0-21swapper/308:50:273
134491400,6ptp4l0-21swapper/308:50:273
134491400,5ptp4l13396-21apt-config10:50:000
134491400,5ptp4l0-21swapper/210:47:502
134491400,5ptp4l0-21swapper/209:25:172
134491400,4ptp4l9531-21diskstats11:50:131
134491400,4ptp4l813899cyclictest08:08:083
134491400,4ptp4l28493-21/usr/sbin/munin11:20:203
134491400,4ptp4l27368-21diskstats07:50:142
134491400,4ptp4l25816-21memory10:05:223
134491400,4ptp4l24312-21apt-get07:45:033
134491400,4ptp4l18756-21ntp_states07:30:222
134491400,4ptp4l13952-21ntp_states07:20:223
134491400,4ptp4l0-21swapper/311:00:133
134491400,4ptp4l0-21swapper/309:40:223
134491400,4ptp4l0-21swapper/212:32:232
134491400,4ptp4l0-21swapper/210:12:042
134491400,4ptp4l0-21swapper/007:57:220
134491400,3ptp4l22926-21apt-get11:10:113
134491400,3ptp4l22565-21apt-get10:00:123
134491400,3ptp4l0-21swapper/208:51:242
134491400,3ptp4l0-21swapper/208:51:242
8138993935,2cyclictest41-21ksoftirqd/311:45:003
8137993934,3cyclictest33-21ksoftirqd/207:35:302
134491390,7ptp4l0-21swapper/312:19:503
134491390,5ptp4l16770-21ps12:05:203
134491390,5ptp4l0-21swapper/211:10:122
134491390,5ptp4l0-21swapper/210:00:112
134491390,4ptp4l0-21swapper/311:57:003
134491390,4ptp4l0-21swapper/310:55:123
134491390,4ptp4l0-21swapper/309:55:213
134491390,4ptp4l0-21swapper/308:55:253
134491390,4ptp4l0-21swapper/308:15:143
134491390,4ptp4l0-21swapper/307:25:193
134491390,4ptp4l0-21swapper/212:39:392
134491390,4ptp4l0-21swapper/212:30:012
134491390,4ptp4l0-21swapper/212:16:492
134491390,4ptp4l0-21swapper/211:54:072
134491390,4ptp4l0-21swapper/211:35:242
134491390,4ptp4l0-21swapper/211:22:292
134491390,4ptp4l0-21swapper/210:20:262
134491390,4ptp4l0-21swapper/209:37:172
134491390,4ptp4l0-21swapper/209:20:332
134491390,4ptp4l0-21swapper/109:05:171
134491390,4ptp4l0-21swapper/107:32:401
134491390,3ptp4l0-21swapper/311:47:563
134491390,2ptp4l29311-21apt-get09:05:123
8136993833,3cyclictest25-21ksoftirqd/112:10:011
134491380,5ptp4l0-21swapper/312:20:123
134491380,4ptp4l0-21swapper/312:30:503
134491380,4ptp4l0-21swapper/312:29:263
134491380,4ptp4l0-21swapper/310:47:203
134491380,4ptp4l0-21swapper/310:33:473
134491380,4ptp4l0-21swapper/310:21:563
134491380,4ptp4l0-21swapper/310:15:313
134491380,4ptp4l0-21swapper/308:10:143
134491380,4ptp4l0-21swapper/307:55:163
134491380,4ptp4l0-21swapper/110:20:101
134491380,4ptp4l0-21swapper/012:19:470
134491380,3ptp4l0-21swapper/312:38:123
134491380,3ptp4l0-21swapper/311:05:243
8138993732,3cyclictest41-21ksoftirqd/307:10:203
134491370,4ptp4l0-21swapper/311:30:293
134491370,4ptp4l0-21swapper/307:35:263
134491370,4ptp4l0-21swapper/307:35:013
134491370,4ptp4l0-21swapper/307:15:143
134491310,3ptp4l0-21swapper/307:50:243
134491300,4ptp4l0-21swapper/307:05:293
134491250,4ptp4l0-21swapper/207:05:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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