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2026-09-24 - 22:37
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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 Thu Sep 24, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1164921170,2sleep01441199cyclictest11:40:260
14414998532,11cyclictest41-21ksoftirqd/307:45:193
297642770,4sleep129769-21switchtime08:50:241
14414997325,8cyclictest41-21ksoftirqd/307:10:163
14414997032,4cyclictest41-21ksoftirqd/309:05:283
14413996836,4cyclictest33-21ksoftirqd/210:40:162
320412670,5sleep30-21swapper/312:25:173
14414996726,10cyclictest41-21ksoftirqd/308:25:003
14414996636,3cyclictest41-21ksoftirqd/307:30:143
14414996635,3cyclictest41-21ksoftirqd/309:25:173
14414996625,9cyclictest41-21ksoftirqd/311:35:003
14413996636,3cyclictest33-21ksoftirqd/207:35:002
14414996534,4cyclictest41-21ksoftirqd/308:35:253
14414996532,4cyclictest41-21ksoftirqd/308:15:133
14414996532,3cyclictest41-21ksoftirqd/310:30:233
14414996530,3cyclictest41-21ksoftirqd/308:50:013
14414996529,8cyclictest41-21ksoftirqd/307:55:133
14414996528,9cyclictest41-21ksoftirqd/310:45:253
14413996535,4cyclictest33-21ksoftirqd/207:10:262
14413996523,5cyclictest33-21ksoftirqd/211:40:012
14413996523,5cyclictest33-21ksoftirqd/211:40:012
17642640,3sleep21766-21ntp_kernel_err09:00:242
14414996430,4cyclictest41-21ksoftirqd/309:10:123
14414996430,3cyclictest41-21ksoftirqd/311:45:153
14414996423,8cyclictest41-21ksoftirqd/308:25:163
14413996435,4cyclictest33-21ksoftirqd/207:27:322
14413996434,4cyclictest33-21ksoftirqd/211:00:282
14414996331,3cyclictest41-21ksoftirqd/311:29:593
14414996329,4cyclictest41-21ksoftirqd/312:05:253
14414996329,4cyclictest41-21ksoftirqd/312:05:253
14414996315,7cyclictest41-21ksoftirqd/310:29:593
134491630,3ptp4l28834-21hddtemp_smartct08:50:150
14414996232,4cyclictest41-21ksoftirqd/308:30:173
14414996232,4cyclictest41-21ksoftirqd/308:10:273
14414996231,4cyclictest41-21ksoftirqd/308:55:003
14414996228,4cyclictest41-21ksoftirqd/312:20:013
14414996225,3cyclictest41-21ksoftirqd/309:30:153
134491620,3ptp4l0-21swapper/011:00:290
134491620,27ptp4l12457-21fschecks_time07:05:150
14414996131,4cyclictest41-21ksoftirqd/310:00:173
14414996130,4cyclictest41-21ksoftirqd/310:40:253
14414996130,4cyclictest41-21ksoftirqd/310:35:183
14414996130,4cyclictest41-21ksoftirqd/310:35:183
14414996130,4cyclictest41-21ksoftirqd/309:40:273
14414996128,4cyclictest41-21ksoftirqd/310:55:263
14414996128,4cyclictest41-21ksoftirqd/309:20:283
14414996126,5cyclictest41-21ksoftirqd/307:40:193
14414996124,4cyclictest41-21ksoftirqd/309:55:163
14413996116,9cyclictest33-21ksoftirqd/211:15:232
134491610,4ptp4l0-21swapper/009:35:260
14414996029,4cyclictest41-21ksoftirqd/312:00:163
14413996033,3cyclictest33-21ksoftirqd/208:50:252
14413996027,4cyclictest33-21ksoftirqd/210:08:282
134491600,5ptp4l0-21swapper/008:30:160
14414995926,3cyclictest41-21ksoftirqd/311:10:163
14413995935,3cyclictest33-21ksoftirqd/208:49:312
14413995932,4cyclictest33-21ksoftirqd/212:05:262
14413995932,4cyclictest33-21ksoftirqd/212:05:262
14413995932,4cyclictest33-21ksoftirqd/208:00:152
14413995931,4cyclictest33-21ksoftirqd/211:25:152
14413995930,3cyclictest33-21ksoftirqd/212:20:112
14413995930,3cyclictest33-21ksoftirqd/210:50:192
14413995926,4cyclictest33-21ksoftirqd/208:25:002
1441299596,10cyclictest15928-21mailstats08:20:251
14414995826,8cyclictest41-21ksoftirqd/307:15:273
14414995823,9cyclictest41-21ksoftirqd/308:00:273
14414995823,4cyclictest41-21ksoftirqd/309:45:183
14413995830,4cyclictest33-21ksoftirqd/210:30:212
14413995828,4cyclictest33-21ksoftirqd/209:35:182
14413995827,3cyclictest33-21ksoftirqd/209:45:012
14413995820,10cyclictest33-21ksoftirqd/211:30:312
134491580,3ptp4l0-21swapper/011:26:380
14414995728,3cyclictest41-21ksoftirqd/312:35:153
14414995728,3cyclictest41-21ksoftirqd/312:35:153
14414995728,3cyclictest41-21ksoftirqd/311:35:243
14414995728,3cyclictest41-21ksoftirqd/311:35:243
14414995727,4cyclictest41-21ksoftirqd/307:50:193
14414995726,8cyclictest41-21ksoftirqd/307:20:153
14414995726,4cyclictest41-21ksoftirqd/310:50:193
14414995722,9cyclictest41-21ksoftirqd/309:00:213
14413995732,3cyclictest33-21ksoftirqd/209:05:252
14413995727,4cyclictest33-21ksoftirqd/208:30:002
14413995727,3cyclictest33-21ksoftirqd/211:20:182
14413995727,3cyclictest33-21ksoftirqd/210:35:222
14413995727,3cyclictest33-21ksoftirqd/210:35:222
14413995726,4cyclictest33-21ksoftirqd/210:45:232
14413995725,4cyclictest33-21ksoftirqd/209:24:592
14413995723,4cyclictest33-21ksoftirqd/207:45:222
134491570,4ptp4l0-21swapper/212:30:142
134491570,4ptp4l0-21swapper/108:45:561
134491570,3ptp4l0-21swapper/212:00:482
134491570,3ptp4l0-21swapper/211:52:002
14414995626,8cyclictest41-21ksoftirqd/308:55:193
14414995624,4cyclictest41-21ksoftirqd/311:00:233
14414995623,8cyclictest41-21ksoftirqd/309:35:153
14414995623,8cyclictest41-21ksoftirqd/308:05:143
14413995629,3cyclictest33-21ksoftirqd/210:25:012
14413995624,5cyclictest33-21ksoftirqd/209:14:362
14413995624,3cyclictest33-21ksoftirqd/210:25:002
14413995623,3cyclictest33-21ksoftirqd/212:35:252
14413995623,3cyclictest33-21ksoftirqd/212:35:252
14413995622,4cyclictest33-21ksoftirqd/209:15:222
14414995523,9cyclictest41-21ksoftirqd/311:55:183
14414995523,4cyclictest41-21ksoftirqd/309:50:233
14413995526,4cyclictest33-21ksoftirqd/207:35:242
14413995525,4cyclictest33-21ksoftirqd/208:05:182
14413995525,3cyclictest33-21ksoftirqd/212:25:112
14413995523,4cyclictest33-21ksoftirqd/207:15:242
14413995523,3cyclictest33-21ksoftirqd/211:05:302
14413995523,3cyclictest33-21ksoftirqd/211:05:302
1441299558,11cyclictest0-21swapper/107:20:051
1441299557,6cyclictest0-21swapper/107:19:171
1441299557,15cyclictest28916-21/usr/sbin/munin12:20:231
134491550,5ptp4l0-21swapper/009:13:340
134491550,4ptp4l0-21swapper/012:08:530
134491550,4ptp4l0-21swapper/012:08:530
134491550,4ptp4l0-21swapper/009:30:580
134491550,4ptp4l0-21swapper/009:07:530
134491550,4ptp4l0-21swapper/007:57:050
14414995433,3cyclictest41-21ksoftirqd/311:20:133
14414995424,4cyclictest41-21ksoftirqd/311:50:193
14414995421,3cyclictest41-21ksoftirqd/307:35:213
14413995428,4cyclictest33-21ksoftirqd/209:58:412
14413995424,4cyclictest33-21ksoftirqd/210:00:172
1441299545,11cyclictest0-21swapper/109:55:141
134491540,4ptp4l0-21swapper/012:02:250
134491540,4ptp4l0-21swapper/010:45:170
134491540,3ptp4l0-21swapper/010:25:160
134491540,12ptp4l0-21swapper/012:35:190
134491540,12ptp4l0-21swapper/012:35:190
14414995319,3cyclictest41-21ksoftirqd/310:20:263
14413995328,5cyclictest33-21ksoftirqd/211:10:072
14413995318,9cyclictest33-21ksoftirqd/211:40:252
134491530,5ptp4l0-21swapper/307:09:243
134491530,4ptp4l0-21swapper/009:03:060
134491530,4ptp4l0-21swapper/008:45:180
134491530,3ptp4l11688-21sensors_temp10:30:300
134491530,3ptp4l0-21swapper/012:15:520
14413995225,3cyclictest33-21ksoftirqd/208:10:212
14413995221,3cyclictest33-21ksoftirqd/209:45:252
1441299527,5cyclictest0-21swapper/109:39:221
1441299526,6cyclictest0-21swapper/111:50:151
14414995140,2cyclictest41-21ksoftirqd/311:20:003
14414995136,4cyclictest41-21ksoftirqd/307:25:133
14414995117,9cyclictest41-21ksoftirqd/312:25:013
14413995125,4cyclictest33-21ksoftirqd/210:12:452
14413995121,4cyclictest33-21ksoftirqd/207:40:232
14413995120,3cyclictest33-21ksoftirqd/209:50:262
14413995115,8cyclictest33-21ksoftirqd/207:54:592
134491510,4ptp4l0-21swapper/011:31:400
134491510,4ptp4l0-21swapper/009:43:050
134491510,3ptp4l0-21swapper/009:20:260
14414995018,6cyclictest41-21ksoftirqd/310:12:323
14413995026,4cyclictest33-21ksoftirqd/211:47:202
1441299505,11cyclictest27871-21cat11:05:271
1441299505,11cyclictest27871-21cat11:05:271
134491500,9ptp4l12385-21df_inode07:05:151
134491500,7ptp4l0-21swapper/207:09:202
134491500,4ptp4l0-21swapper/311:09:023
134491500,4ptp4l0-21swapper/311:09:023
134491500,4ptp4l0-21swapper/012:33:010
134491500,4ptp4l0-21swapper/008:17:340
14414994922,3cyclictest41-21ksoftirqd/311:40:213
14413994937,3cyclictest33-21ksoftirqd/208:55:242
14413994918,3cyclictest33-21ksoftirqd/212:15:252
14413994918,3cyclictest33-21ksoftirqd/208:35:262
14413994918,3cyclictest33-21ksoftirqd/208:15:152
1441399490,6cyclictest121rcu_preempt07:20:162
1441299497,6cyclictest0-21swapper/107:58:231
134491490,4ptp4l0-21swapper/009:27:010
134491490,18ptp4l9-21ksoftirqd/008:05:120
14413994832,6cyclictest33-21ksoftirqd/210:57:272
14413994820,4cyclictest33-21ksoftirqd/209:31:252
14413994820,4cyclictest33-21ksoftirqd/209:26:392
1441299487,5cyclictest0-21swapper/110:34:201
1441299487,5cyclictest0-21swapper/107:48:281
1441299487,10cyclictest0-21swapper/109:04:191
1441299486,9cyclictest0-21swapper/108:40:131
1441299486,6cyclictest0-21swapper/112:32:111
1441299486,6cyclictest0-21swapper/112:12:341
134491480,4ptp4l0-21swapper/010:06:210
134491480,4ptp4l0-21swapper/010:01:140
134491480,4ptp4l0-21swapper/007:13:170
134491480,3ptp4l0-21swapper/011:58:440
1441499476,3cyclictest41-21ksoftirqd/312:30:013
14414994732,4cyclictest41-21ksoftirqd/310:05:153
14414994731,4cyclictest41-21ksoftirqd/310:20:003
14413994734,3cyclictest33-21ksoftirqd/211:55:232
14413994733,4cyclictest33-21ksoftirqd/207:55:112
14413994732,4cyclictest33-21ksoftirqd/212:13:582
14413994723,4cyclictest33-21ksoftirqd/210:18:142
134491470,4ptp4l0-21swapper/012:25:190
134491470,4ptp4l0-21swapper/011:19:050
134491470,4ptp4l0-21swapper/008:37:460
134491470,3ptp4l0-21swapper/109:20:141
14414994633,3cyclictest41-21ksoftirqd/312:10:223
14413994631,5cyclictest33-21ksoftirqd/208:33:232
1441299467,7cyclictest5745-21perl09:10:141
1441299466,6cyclictest0-21swapper/111:16:241
134491460,4ptp4l0-21swapper/007:40:400
1441499451,2cyclictest121rcu_preempt08:40:203
1441499451,2cyclictest0-21swapper/309:15:243
14413994533,4cyclictest33-21ksoftirqd/208:45:002
1441299459,7cyclictest14756-21diskstats07:10:161
1441299458,7cyclictest18070-21phc2sys08:25:231
1441299457,7cyclictest6110-21perl11:30:191
1441299456,7cyclictest4287-21sshd09:05:261
1441299455,8cyclictest8125-21hddtemp_smartct08:05:141
1441299454,8cyclictest18359-21ntpq10:45:201
134491450,10ptp4l0-21swapper/010:22:020
1441299447,8cyclictest31342-21hddtemp_smartct10:05:161
1441299447,13cyclictest29714-21memory11:10:231
1441299445,8cyclictest0-21swapper/110:15:191
134491440,5ptp4l0-21swapper/007:35:120
134491440,3ptp4l0-21swapper/112:09:161
134491440,3ptp4l0-21swapper/112:09:161
134491440,3ptp4l0-21swapper/007:45:160
134491440,3ptp4l0-21swapper/007:27:040
134491440,10ptp4l0-21swapper/012:21:400
1441299439,17cyclictest134491ptp4l11:55:171
1441299438,8cyclictest8572-21memory09:15:211
1441299436,7cyclictest22199-21irqstats07:25:191
1441299434,5cyclictest0-21swapper/109:50:231
14411994332,3cyclictest9-21ksoftirqd/008:45:000
134491430,5ptp4l0-21swapper/011:05:230
134491430,5ptp4l0-21swapper/011:05:230
134491430,5ptp4l0-21swapper/010:35:130
134491430,5ptp4l0-21swapper/010:35:130
134491430,4ptp4l0-21swapper/111:47:171
134491430,3ptp4l0-21swapper/010:18:360
1441299426,5cyclictest0-21swapper/109:30:251
1441299425,5cyclictest0-21swapper/110:10:261
134691420,9getstats0-21swapper/111:02:101
134491420,9ptp4l0-21swapper/007:19:210
134491420,5ptp4l0-21swapper/112:00:281
134491420,5ptp4l0-21swapper/011:50:230
134491420,3ptp4l20497-21ls10:50:250
134491420,10ptp4l0-21swapper/111:24:591
1441299418,7cyclictest9503-21users10:25:271
134491410,5ptp4l0-21swapper/111:25:171
134491410,5ptp4l0-21swapper/011:10:300
134491410,5ptp4l0-21swapper/008:01:360
134491410,4ptp4l25112-21ntp_states09:50:220
134491410,4ptp4l0-21swapper/009:55:350
134491410,3ptp4l1281-21hddtemp_smartct10:10:210
1441299408,7cyclictest0-21swapper/107:40:151
1441299405,8cyclictest0-21swapper/108:13:491
1441299405,8cyclictest0-21swapper/107:31:041
134691400,6getstats1441299cyclictest08:37:241
134491400,6ptp4l0-21swapper/011:24:120
134491400,5ptp4l0-21swapper/107:35:181
134491400,4ptp4l19634-21hddtemp_smartct08:30:171
134491400,4ptp4l0-21swapper/112:25:171
134491400,4ptp4l0-21swapper/111:44:551
134491400,4ptp4l0-21swapper/110:57:091
134491400,4ptp4l0-21swapper/110:35:111
134491400,4ptp4l0-21swapper/110:35:111
134491400,4ptp4l0-21swapper/109:26:111
134491400,4ptp4l0-21swapper/108:55:151
134491400,4ptp4l0-21swapper/012:10:590
134491400,4ptp4l0-21swapper/010:55:160
134491400,4ptp4l0-21swapper/010:41:410
134491400,4ptp4l0-21swapper/008:55:190
134491400,3ptp4l8405-21hddtemp_smartct11:35:170
134491400,3ptp4l8405-21hddtemp_smartct11:35:170
134491400,3ptp4l23709-21apt-config07:30:000
134491400,3ptp4l18476-21ls08:25:260
134491400,3ptp4l1842-21ntp_states07:50:210
134491400,3ptp4l12795-21df11:45:110
134491400,3ptp4l0-21swapper/008:10:180
134491400,10ptp4l25-21ksoftirqd/110:44:101
1441299395,5cyclictest0-21swapper/108:15:131
134491390,5ptp4l0-21swapper/108:00:191
134491390,4ptp4l8190-21df11:35:141
134491390,4ptp4l8190-21df11:35:141
134491390,4ptp4l20733-21/usr/sbin/munin10:50:281
134491390,4ptp4l0-21swapper/112:39:551
134491390,4ptp4l0-21swapper/112:39:551
134491390,4ptp4l0-21swapper/110:20:061
134491390,4ptp4l0-21swapper/109:40:131
134491390,4ptp4l0-21swapper/009:47:440
134491390,4ptp4l0-21swapper/009:15:020
134491390,4ptp4l0-21swapper/008:20:240
134491390,3ptp4l22822-21ntp_states09:45:221
134491390,3ptp4l19362-21df_inode07:20:140
134491380,4ptp4l0-21swapper/112:16:321
134491380,4ptp4l0-21swapper/110:02:011
134491380,3ptp4l0-21swapper/107:50:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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