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2026-04-04 - 20:50
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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 Sat Apr 04, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1113899670,25cyclictest18657-21egrep09:45:111
1113899666,19cyclictest12335-21irqrtprio09:30:181
238412650,5sleep11113899cyclictest12:10:241
238412650,5sleep11113899cyclictest12:10:231
1113899650,26cyclictest22900-21cat08:45:131
1113899650,26cyclictest22900-21cat08:45:121
1113899650,23cyclictest9926-21date10:35:011
134491640,4ptp4l0-21swapper/311:25:283
11139996336,3cyclictest33-21ksoftirqd/211:50:152
11139996327,6cyclictest33-21ksoftirqd/208:03:222
1113899630,25cyclictest12665-21uptime11:45:271
11139996227,6cyclictest33-21ksoftirqd/208:33:502
11139996225,6cyclictest33-21ksoftirqd/208:14:012
11139996225,6cyclictest33-21ksoftirqd/208:14:012
11139996225,6cyclictest33-21ksoftirqd/207:50:232
1113899622,20cyclictest0-21swapper/110:25:181
1113899621,28cyclictest26578-21taskset12:16:321
1113899620,28cyclictest8943-21chrt09:22:321
1113899620,28cyclictest17941-21chrt08:34:411
1113899620,24cyclictest28433-21mailstats12:20:241
1113899612,25cyclictest0-21swapper/112:05:211
11139996028,7cyclictest33-21ksoftirqd/207:45:162
11139996027,4cyclictest33-21ksoftirqd/210:12:262
11139996026,5cyclictest33-21ksoftirqd/211:45:252
11139996025,3cyclictest33-21ksoftirqd/209:55:002
1113899600,30cyclictest29905-21taskset10:07:481
1113899600,30cyclictest29117-21seq07:47:231
1113899600,27cyclictest31496-21chrt12:29:411
11139995932,3cyclictest33-21ksoftirqd/211:22:102
11139995928,4cyclictest33-21ksoftirqd/211:11:172
11139995927,6cyclictest33-21ksoftirqd/209:35:232
11139995927,4cyclictest33-21ksoftirqd/207:30:002
1113899590,29cyclictest27706-21seq10:04:061
1113899590,29cyclictest27706-21seq10:04:061
1113899590,29cyclictest10712-21chrt08:15:431
134491580,4ptp4l0-21swapper/107:12:431
134491580,4ptp4l0-21swapper/012:12:170
134491580,4ptp4l0-21swapper/012:12:160
134491580,3ptp4l1301-21snmpd11:48:193
11139995830,4cyclictest33-21ksoftirqd/210:26:442
11139995828,17cyclictest33-21ksoftirqd/210:55:152
11139995827,4cyclictest33-21ksoftirqd/207:19:032
11139995825,4cyclictest33-21ksoftirqd/211:30:132
11139995825,4cyclictest33-21ksoftirqd/208:45:092
11139995825,4cyclictest33-21ksoftirqd/208:45:092
11139995824,6cyclictest33-21ksoftirqd/209:00:232
11139995823,3cyclictest33-21ksoftirqd/209:44:392
1113899581,30cyclictest862-21seq11:22:581
1113899581,29cyclictest3509-21taskset12:36:371
1113899581,29cyclictest15110-21seq11:52:021
1113899580,30cyclictest28676-21taskset11:13:381
1113899580,30cyclictest24639-21seq07:39:081
1113899580,30cyclictest20134-21seq08:38:211
1113899580,29cyclictest19839-21seq07:26:281
1113899580,28cyclictest1284-21seq07:56:381
134491570,4ptp4l0-21swapper/310:06:303
134491570,4ptp4l0-21swapper/107:20:221
134491570,4ptp4l0-21swapper/107:20:221
11139995730,6cyclictest33-21ksoftirqd/207:55:522
11139995729,6cyclictest33-21ksoftirqd/211:38:322
11139995725,7cyclictest33-21ksoftirqd/211:55:202
11139995725,6cyclictest33-21ksoftirqd/209:55:272
11139995725,4cyclictest33-21ksoftirqd/211:15:132
11139995725,4cyclictest33-21ksoftirqd/210:51:492
11139995725,4cyclictest33-21ksoftirqd/208:40:192
11139995724,4cyclictest33-21ksoftirqd/211:03:542
11139995720,6cyclictest33-21ksoftirqd/208:30:002
1113899571,19cyclictest23410-21df09:55:131
1113899570,54cyclictest16407-21cut11:55:181
1113899570,29cyclictest6019-21seq08:07:131
1113899570,29cyclictest19951-21seq12:04:571
1113899570,29cyclictest18057-21seq09:41:111
1113899570,28cyclictest3608-21taskset08:00:421
1113899570,28cyclictest13219-21taskset08:23:011
1113899570,27cyclictest5570-21chrt11:30:361
134491560,4ptp4l0-21swapper/310:33:133
11139995628,7cyclictest33-21ksoftirqd/212:18:232
11139995627,7cyclictest33-21ksoftirqd/210:16:272
11139995627,6cyclictest33-21ksoftirqd/210:10:002
11139995627,4cyclictest33-21ksoftirqd/208:38:302
11139995626,6cyclictest33-21ksoftirqd/212:40:002
11139995626,3cyclictest33-21ksoftirqd/212:33:542
11139995625,6cyclictest33-21ksoftirqd/208:53:122
11139995624,9cyclictest33-21ksoftirqd/212:21:442
11139995624,4cyclictest33-21ksoftirqd/210:00:302
11139995624,4cyclictest33-21ksoftirqd/210:00:302
1113899560,30cyclictest32637-21seq10:14:581
1113899560,30cyclictest26298-21taskset11:07:321
1113899560,29cyclictest31833-21seq09:02:091
1113899560,29cyclictest1222-21taskset12:32:481
1113899560,28cyclictest19068-21seq10:51:111
1113899560,26cyclictest24003-21taskset11:02:331
134491550,4ptp4l0-21swapper/311:40:333
134491550,4ptp4l0-21swapper/311:40:333
11139995530,6cyclictest33-21ksoftirqd/208:16:372
11139995526,4cyclictest33-21ksoftirqd/210:36:582
11139995525,3cyclictest33-21ksoftirqd/211:44:562
11139995525,3cyclictest33-21ksoftirqd/211:44:562
11139995524,7cyclictest33-21ksoftirqd/209:46:522
11139995523,4cyclictest33-21ksoftirqd/207:20:302
11139995523,4cyclictest33-21ksoftirqd/207:20:302
11139995523,3cyclictest33-21ksoftirqd/208:09:102
1113899550,30cyclictest6699-21seq09:18:291
1113899550,29cyclictest3133-21seq11:26:271
11137995525,3cyclictest9-21ksoftirqd/012:15:250
134491540,4ptp4l0-21swapper/008:07:480
134491540,3ptp4l0-21swapper/310:56:023
134491540,12ptp4l9375-21iostat_ios07:05:192
11139995427,6cyclictest33-21ksoftirqd/212:25:492
11139995426,6cyclictest33-21ksoftirqd/209:12:092
11139995425,7cyclictest33-21ksoftirqd/208:23:472
11139995423,4cyclictest33-21ksoftirqd/211:10:002
11139995423,3cyclictest33-21ksoftirqd/207:32:392
11139995418,8cyclictest33-21ksoftirqd/212:00:242
11139995417,3cyclictest33-21ksoftirqd/211:25:152
1113899541,19cyclictest134491ptp4l07:40:221
1113899540,28cyclictest31484-21taskset07:52:341
1113899540,27cyclictest22374-21seq07:34:301
11137995411,9cyclictest17498-21kworker/0:009:18:410
134491530,3ptp4l0-21swapper/311:30:403
134491530,3ptp4l0-21swapper/311:01:223
11139995326,7cyclictest33-21ksoftirqd/210:21:332
11139995320,4cyclictest33-21ksoftirqd/207:35:212
1113899530,29cyclictest1941-21seq09:09:471
1113899530,28cyclictest8264-21taskset11:37:561
134491520,4ptp4l0-21swapper/310:24:463
134491520,4ptp4l0-21swapper/309:21:353
134491520,4ptp4l0-21swapper/210:43:362
134491520,4ptp4l0-21swapper/008:25:520
134491520,4ptp4l0-21swapper/008:03:570
134491520,3ptp4l0-21swapper/307:42:453
134491520,19ptp4l0-21swapper/307:33:263
11139995223,3cyclictest33-21ksoftirqd/207:10:242
11139995221,3cyclictest33-21ksoftirqd/210:34:302
1113899520,29cyclictest21531-21taskset10:58:201
1113899520,28cyclictest2847-21taskset10:20:021
134491510,4ptp4l0-21swapper/312:29:503
134491510,4ptp4l0-21swapper/309:34:543
134491510,4ptp4l0-21swapper/011:58:460
134491510,4ptp4l0-21swapper/009:32:110
134491510,4ptp4l0-21swapper/008:58:260
134491510,4ptp4l0-21swapper/008:32:200
134491510,4ptp4l0-21swapper/008:14:100
134491510,4ptp4l0-21swapper/008:14:100
134491510,3ptp4l0-21swapper/010:45:370
11139995131,3cyclictest33-21ksoftirqd/212:10:262
11139995131,3cyclictest33-21ksoftirqd/212:10:262
11139995125,5cyclictest33-21ksoftirqd/207:42:482
11139995124,3cyclictest33-21ksoftirqd/209:15:122
11139995122,6cyclictest33-21ksoftirqd/212:08:492
11139995122,6cyclictest33-21ksoftirqd/209:20:232
11139995113,5cyclictest33-21ksoftirqd/208:55:022
134491500,4ptp4l0-21swapper/310:35:103
134491500,4ptp4l0-21swapper/009:29:130
134491500,4ptp4l0-21swapper/008:46:300
134491500,4ptp4l0-21swapper/008:46:300
134491500,4ptp4l0-21swapper/008:23:140
134491500,3ptp4l0-21swapper/310:19:533
134491500,2ptp4l0-21swapper/009:42:480
1113899500,28cyclictest30745-21taskset11:15:471
11137995034,5cyclictest9-21ksoftirqd/012:25:000
11137995021,7cyclictest9-21ksoftirqd/010:10:220
134491490,4ptp4l0-21swapper/012:02:370
134491490,4ptp4l0-21swapper/007:09:100
11138994911,27cyclictest26891-21seq08:51:211
134491480,4ptp4l0-21swapper/011:11:350
134491480,4ptp4l0-21swapper/008:42:400
1113999483,2cyclictest121rcu_preempt09:30:192
11139994816,9cyclictest33-21ksoftirqd/209:25:282
11139994811,6cyclictest33-21ksoftirqd/209:09:592
134491470,5ptp4l41-21ksoftirqd/307:05:283
134491470,4ptp4l0-21swapper/311:06:133
134491470,4ptp4l0-21swapper/010:23:350
134491470,4ptp4l0-21swapper/007:53:170
134491470,4ptp4l0-21swapper/007:35:460
134491470,3ptp4l0-21swapper/009:22:500
134491470,3ptp4l0-21swapper/008:50:290
1113899470,28cyclictest11297-21seq09:28:121
1113899470,27cyclictest8490-21seq08:14:271
1113899470,27cyclictest8490-21seq08:14:271
134491460,4ptp4l0-21swapper/010:41:410
134491460,3ptp4l0-21swapper/312:22:483
134491460,3ptp4l0-21swapper/307:10:283
134491460,3ptp4l0-21swapper/011:50:140
1113799462,9cyclictest17498-21kworker/0:009:10:510
11137994616,4cyclictest9-21ksoftirqd/011:02:280
11137994610,5cyclictest9-21ksoftirqd/007:40:270
134491450,4ptp4l0-21swapper/310:42:593
134491450,4ptp4l0-21swapper/012:09:310
1113899450,30cyclictest29433-21chrt08:56:481
1113899450,30cyclictest11751-21taskset10:36:251
1113899450,28cyclictest14279-21chrt10:41:261
1113899450,27cyclictest22654-21seq09:51:141
11137994514,6cyclictest9-21ksoftirqd/012:30:160
11137994514,3cyclictest9-21ksoftirqd/011:20:110
11137994513,6cyclictest9-21ksoftirqd/011:15:190
134491440,4ptp4l0-21swapper/010:07:390
134491440,4ptp4l0-21swapper/007:32:050
134491440,3ptp4l0-21swapper/311:15:203
134491440,3ptp4l0-21swapper/010:02:400
134491440,3ptp4l0-21swapper/010:02:400
134491440,3ptp4l0-21swapper/009:53:230
1113999443,2cyclictest121rcu_preempt10:47:152
11137994414,4cyclictest9-21ksoftirqd/011:40:280
11137994414,4cyclictest9-21ksoftirqd/011:40:280
11137994411,4cyclictest9-21ksoftirqd/011:31:440
134691430,11getstats0-21swapper/309:55:263
134691430,10getstats0-21swapper/308:40:133
134491430,4ptp4l1668-21apt-get12:35:120
134491430,3ptp4l22833-21apt-get08:45:123
134491430,3ptp4l22833-21apt-get08:45:113
134491430,10ptp4l0-21swapper/010:18:540
1113899430,29cyclictest15434-21taskset07:19:091
1113899430,27cyclictest1317-21runrttasks11:41:021
1113899430,27cyclictest1317-21runrttasks11:41:021
1113799439,4cyclictest9-21ksoftirqd/010:25:210
11137994312,4cyclictest9-21ksoftirqd/007:20:220
11137994312,4cyclictest9-21ksoftirqd/007:20:220
11137994310,4cyclictest9-21ksoftirqd/009:35:170
134691420,11getstats0-21swapper/307:36:353
134491420,6ptp4l0-21swapper/310:45:213
134491420,5ptp4l0-21swapper/311:35:013
134491420,5ptp4l0-21swapper/011:05:130
134491420,4ptp4l0-21swapper/307:57:163
1113899421,25cyclictest13615-21/usr/sbin/munin08:25:181
1113899420,28cyclictest2528-21chrt10:19:081
1113799428,6cyclictest9-21ksoftirqd/010:00:010
11137994214,7cyclictest9-21ksoftirqd/007:25:250
46198410,10rtkit-daemon0-21swapper/307:23:483
46198410,10rtkit-daemon0-21swapper/307:23:483
134691410,9getstats0-21swapper/308:35:473
134691410,10getstats0-21swapper/309:36:053
134691410,10getstats0-21swapper/309:26:323
134691410,10getstats0-21swapper/307:17:213
134491410,6ptp4l0-21swapper/311:20:293
134491410,5ptp4l32617-21/usr/sbin/munin09:05:143
134491410,4ptp4l27288-21apt-get07:45:130
134491410,4ptp4l16873-21apt-get10:50:023
134491410,3ptp4l0-21swapper/009:46:540
11140994136,3cyclictest41-21ksoftirqd/309:20:013
11137994135,3cyclictest9-21ksoftirqd/010:40:010
11137994111,4cyclictest9-21ksoftirqd/007:55:260
134491400,6ptp4l0-21swapper/107:05:591
134491400,5ptp4l0-21swapper/310:25:123
134491400,4ptp4l32272-21latency_hist09:05:000
134491400,4ptp4l2482-21ntp_states11:25:230
134491400,4ptp4l0-21swapper/311:10:153
134491400,4ptp4l0-21swapper/310:10:263
134491400,4ptp4l0-21swapper/308:10:273
134491400,4ptp4l0-21swapper/308:10:273
134491400,4ptp4l0-21swapper/307:52:563
134491400,4ptp4l0-21swapper/109:35:201
134491400,4ptp4l0-21swapper/010:57:240
134491400,4ptp4l0-21swapper/010:50:200
134491400,4ptp4l0-21swapper/008:16:340
134491400,3ptp4l31772-21apt-get12:30:113
134491400,3ptp4l13465-21apt-get07:15:140
134491400,3ptp4l1008-21ntp_states09:05:210
134491400,3ptp4l0-21swapper/312:39:563
134491400,3ptp4l0-21swapper/008:37:280
1113899400,26cyclictest4241-21seq09:14:121
1113799408,5cyclictest9-21ksoftirqd/010:30:160
1113799407,5cyclictest9-21ksoftirqd/012:25:000
134491390,5ptp4l11584-21grep07:10:160
134491390,4ptp4l6954-21iostat_ios11:35:180
134491390,4ptp4l0-21swapper/312:16:213
134491390,4ptp4l0-21swapper/312:12:313
134491390,4ptp4l0-21swapper/312:12:313
134491390,4ptp4l0-21swapper/309:47:133
134491390,4ptp4l0-21swapper/309:00:243
134491390,4ptp4l0-21swapper/308:21:513
134491390,4ptp4l0-21swapper/108:40:241
134491390,3ptp4l12121-21ntp_states11:45:210
134491380,5ptp4l0-21swapper/311:53:153
134491380,4ptp4l0-21swapper/311:55:143
134491380,4ptp4l0-21swapper/309:43:293
134491380,4ptp4l0-21swapper/308:55:363
134491380,4ptp4l0-21swapper/308:30:053
134491380,4ptp4l0-21swapper/308:09:363
134491380,3ptp4l25967-21df_abs10:00:153
134491380,3ptp4l25967-21df_abs10:00:143
46198370,4rtkit-daemon0-21swapper/312:01:143
134491370,5ptp4l0-21swapper/308:53:583
134491370,4ptp4l0-21swapper/312:06:313
134491370,4ptp4l0-21swapper/309:54:353
134491370,4ptp4l0-21swapper/309:14:363
134491370,4ptp4l0-21swapper/308:00:483
134491370,4ptp4l0-21swapper/307:46:143
134491370,4ptp4l0-21swapper/307:27:193
134491370,3ptp4l0-21swapper/308:28:293
134491370,3ptp4l0-21swapper/110:45:471
134491360,4ptp4l0-21swapper/308:19:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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