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2026-03-18 - 21:33
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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 Mar 18, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
931421620,5sleep2690599cyclictest09:35:002
6903996827,8cyclictest9-21ksoftirqd/009:20:150
6903996724,8cyclictest9-21ksoftirqd/007:25:180
134491660,4ptp4l0-21swapper/207:39:162
134491650,4ptp4l0-21swapper/211:35:262
129722650,7sleep3690699cyclictest08:30:273
6904996428,8cyclictest25-21ksoftirqd/108:35:171
6904996423,10cyclictest25-21ksoftirqd/112:30:201
134491630,4ptp4l0-21swapper/309:35:233
6904996231,6cyclictest25-21ksoftirqd/108:25:211
6904996231,6cyclictest25-21ksoftirqd/108:25:211
6904996213,7cyclictest25-21ksoftirqd/109:25:001
134491620,17ptp4l13900-21apt-get07:25:122
134491610,5ptp4l0-21swapper/312:25:113
6904996019,6cyclictest25-21ksoftirqd/111:03:551
6904996010,3cyclictest25-21ksoftirqd/112:10:511
6903996026,10cyclictest9-21ksoftirqd/008:25:000
690499595,7cyclictest23555-21apt-get11:15:011
6904995926,9cyclictest25-21ksoftirqd/109:15:181
134491590,5ptp4l0-21swapper/211:55:192
6904995826,7cyclictest25-21ksoftirqd/109:45:131
134491580,4ptp4l0-21swapper/209:03:372
134491580,4ptp4l0-21swapper/207:41:202
134491580,19ptp4l27570-21grep11:20:243
690499576,9cyclictest25-21ksoftirqd/108:10:281
6904995722,3cyclictest25-21ksoftirqd/108:00:501
6904995721,3cyclictest25-21ksoftirqd/107:16:051
6904995716,6cyclictest25-21ksoftirqd/110:31:431
690399576,9cyclictest9-21ksoftirqd/009:50:150
6903995720,3cyclictest9-21ksoftirqd/008:35:080
134491570,3ptp4l0-21swapper/207:59:302
134491570,3ptp4l0-21swapper/207:59:302
690499565,8cyclictest25-21ksoftirqd/110:55:151
6904995623,3cyclictest25-21ksoftirqd/110:12:061
6904995620,4cyclictest25-21ksoftirqd/107:44:371
6903995648,5cyclictest32015-21rt-features10:20:240
690399564,5cyclictest23400-21sh10:05:000
134491560,5ptp4l19612-21ntp_states07:35:211
134491560,4ptp4l0-21swapper/212:04:152
134491560,4ptp4l0-21swapper/112:38:491
134491560,3ptp4l0-21swapper/307:55:283
134491560,3ptp4l0-21swapper/307:55:283
134491560,3ptp4l0-21swapper/207:11:102
134491560,3ptp4l0-21swapper/111:05:261
690599552,5cyclictest33-21ksoftirqd/211:05:012
6905995522,12cyclictest33-21ksoftirqd/211:15:262
6904995523,7cyclictest25-21ksoftirqd/111:15:181
6904995515,3cyclictest25-21ksoftirqd/110:01:321
690399555,9cyclictest9-21ksoftirqd/009:25:160
690399554,8cyclictest9-21ksoftirqd/007:40:200
690399554,7cyclictest121rcu_preempt11:50:140
134491550,6ptp4l0-21swapper/007:07:200
134491550,4ptp4l0-21swapper/312:30:133
6904995424,10cyclictest25-21ksoftirqd/108:55:191
6904995424,10cyclictest25-21ksoftirqd/108:55:191
6904995418,3cyclictest25-21ksoftirqd/111:47:451
690399546,9cyclictest9-21ksoftirqd/012:30:190
690399544,8cyclictest9-21ksoftirqd/011:55:120
690399544,8cyclictest9-21ksoftirqd/011:25:110
134491540,5ptp4l0-21swapper/311:11:353
134491540,4ptp4l0-21swapper/212:28:542
134491540,3ptp4l0-21swapper/210:50:202
690499536,9cyclictest25-21ksoftirqd/108:15:221
690499534,8cyclictest25-21ksoftirqd/110:15:201
690499533,8cyclictest25-21ksoftirqd/107:55:161
690499533,8cyclictest25-21ksoftirqd/107:55:161
690499532,8cyclictest25-21ksoftirqd/110:20:241
6904995321,4cyclictest25-21ksoftirqd/107:48:191
6904995319,3cyclictest25-21ksoftirqd/111:38:141
690399537,7cyclictest9-21ksoftirqd/011:00:110
690399535,9cyclictest9-21ksoftirqd/009:10:150
690399535,9cyclictest27632-21turbostat09:05:000
690399534,8cyclictest9-21ksoftirqd/011:05:250
690399533,9cyclictest9-21ksoftirqd/008:00:160
690399533,8cyclictest9-21ksoftirqd/010:35:180
690399533,8cyclictest9-21ksoftirqd/007:35:140
6903995319,6cyclictest9-21ksoftirqd/011:15:000
134491530,4ptp4l0-21swapper/310:09:413
134491530,3ptp4l0-21swapper/209:59:142
690499525,9cyclictest25-21ksoftirqd/109:35:191
6904995233,3cyclictest25-21ksoftirqd/108:20:111
690399525,8cyclictest9-21ksoftirqd/010:15:170
690399524,8cyclictest9-21ksoftirqd/012:00:150
690399524,8cyclictest9-21ksoftirqd/009:45:200
690399523,9cyclictest9-21ksoftirqd/008:55:250
690399523,9cyclictest9-21ksoftirqd/008:55:250
6903995222,6cyclictest9-21ksoftirqd/008:15:130
305832520,5sleep30-21swapper/308:00:183
134491520,4ptp4l0-21swapper/211:32:562
134491520,4ptp4l0-21swapper/210:57:112
134491520,4ptp4l0-21swapper/207:51:422
134491520,10ptp4l0-21swapper/309:00:123
690499515,9cyclictest25-21ksoftirqd/109:05:151
690499514,3cyclictest25-21ksoftirqd/107:20:311
690499513,8cyclictest25-21ksoftirqd/111:30:271
6904995117,6cyclictest25-21ksoftirqd/109:40:151
6904995110,3cyclictest25-21ksoftirqd/109:25:321
6903995146,2cyclictest111rcuc/008:50:250
690399513,9cyclictest9-21ksoftirqd/010:50:280
6903995127,4cyclictest9-21ksoftirqd/009:38:310
690399511,3cyclictest9-21ksoftirqd/011:40:010
690399510,7cyclictest9-21ksoftirqd/008:40:140
134491510,4ptp4l30360-21seq09:10:122
134491510,4ptp4l0-21swapper/311:52:113
134491510,4ptp4l0-21swapper/309:54:533
134491510,4ptp4l0-21swapper/308:15:523
134491510,3ptp4l0-21swapper/208:52:542
134491510,11ptp4l0-21swapper/208:00:152
690499503,8cyclictest25-21ksoftirqd/108:05:201
690499502,8cyclictest25-21ksoftirqd/109:30:251
690499502,10cyclictest25-21ksoftirqd/110:35:191
6904995019,7cyclictest25-21ksoftirqd/109:59:481
6904995015,6cyclictest25-21ksoftirqd/107:28:241
690399506,9cyclictest9-21ksoftirqd/008:15:000
690399504,9cyclictest9-21ksoftirqd/008:30:120
690399504,8cyclictest9-21ksoftirqd/011:10:230
690399503,9cyclictest9-21ksoftirqd/008:50:000
690399503,9cyclictest9-21ksoftirqd/008:25:130
690399503,9cyclictest9-21ksoftirqd/008:25:130
690399503,8cyclictest9-21ksoftirqd/011:45:270
690399503,7cyclictest9-21ksoftirqd/012:25:260
6903995020,7cyclictest9-21ksoftirqd/011:32:430
134491500,4ptp4l0-21swapper/312:36:263
134491500,4ptp4l0-21swapper/311:41:583
134491500,4ptp4l0-21swapper/311:06:533
134491500,4ptp4l0-21swapper/307:27:483
134491500,4ptp4l0-21swapper/212:06:302
134491500,3ptp4l0-21swapper/210:26:522
134491500,3ptp4l0-21swapper/209:27:382
134491500,3ptp4l0-21swapper/209:06:112
134491500,2ptp4l22174-21ssh08:50:263
134491500,10ptp4l0-21swapper/210:40:572
126472500,5sleep20-21swapper/209:40:182
690599494,4cyclictest33-21ksoftirqd/212:40:012
690599491,3cyclictest33-21ksoftirqd/208:40:012
690499495,8cyclictest25-21ksoftirqd/108:45:251
690499494,8cyclictest25-21ksoftirqd/111:20:241
6904994933,7cyclictest25-21ksoftirqd/112:05:011
6904994921,7cyclictest25-21ksoftirqd/107:34:061
690499491,9cyclictest25-21ksoftirqd/111:25:251
6904994911,3cyclictest25-21ksoftirqd/110:48:561
690399496,8cyclictest15976-21ls12:05:190
690399495,8cyclictest9-21ksoftirqd/009:55:080
690399495,2cyclictest121rcu_preempt12:40:010
690399494,8cyclictest9-21ksoftirqd/007:30:130
690399492,8cyclictest9-21ksoftirqd/012:10:130
690399492,8cyclictest9-21ksoftirqd/007:45:120
134491490,5ptp4l0-21swapper/107:05:021
134491490,4ptp4l0-21swapper/310:59:353
134491490,4ptp4l0-21swapper/310:12:263
134491490,3ptp4l0-21swapper/112:20:081
690499485,7cyclictest25-21ksoftirqd/112:05:181
690499484,8cyclictest25-21ksoftirqd/108:30:181
6904994823,3cyclictest25-21ksoftirqd/107:11:321
690499482,10cyclictest25-21ksoftirqd/107:50:251
690399488,4cyclictest7628-21apt-get10:40:110
690399484,9cyclictest9-21ksoftirqd/007:15:170
690399483,8cyclictest9-21ksoftirqd/007:10:190
690399482,9cyclictest9-21ksoftirqd/009:05:160
134491480,4ptp4l0-21swapper/310:04:473
134491480,4ptp4l0-21swapper/308:08:433
134491480,4ptp4l0-21swapper/212:34:012
134491480,4ptp4l0-21swapper/210:39:502
134491480,4ptp4l0-21swapper/210:23:022
134491480,4ptp4l0-21swapper/210:07:242
134491480,4ptp4l0-21swapper/208:41:092
134491480,4ptp4l0-21swapper/208:24:362
134491480,3ptp4l0-21swapper/308:29:443
134491480,3ptp4l0-21swapper/308:29:443
134491480,3ptp4l0-21swapper/212:10:222
134491480,3ptp4l0-21swapper/211:50:242
134491480,3ptp4l0-21swapper/210:15:042
6904994732,7cyclictest25-21ksoftirqd/110:25:271
6904994720,6cyclictest25-21ksoftirqd/109:14:471
6904994714,6cyclictest25-21ksoftirqd/112:18:571
690399472,9cyclictest9-21ksoftirqd/009:30:190
690399472,6cyclictest9-21ksoftirqd/008:05:120
6903994719,6cyclictest9-21ksoftirqd/010:56:400
690399470,6cyclictest9-21ksoftirqd/012:24:590
134491470,4ptp4l0-21swapper/307:17:283
134491470,4ptp4l0-21swapper/212:23:552
134491470,4ptp4l0-21swapper/211:24:302
134491470,4ptp4l0-21swapper/012:15:140
134491470,4ptp4l0-21swapper/009:17:030
134491470,3ptp4l0-21swapper/208:29:152
134491470,3ptp4l0-21swapper/208:29:152
134491470,16ptp4l0-21swapper/210:47:182
690599460,4cyclictest33-21ksoftirqd/207:35:002
690499464,3cyclictest25-21ksoftirqd/112:25:171
690499460,6cyclictest25-21ksoftirqd/110:05:101
690399464,3cyclictest9-21ksoftirqd/010:45:270
690399464,10cyclictest9-21ksoftirqd/007:55:250
690399464,10cyclictest9-21ksoftirqd/007:55:250
6903994632,6cyclictest9-21ksoftirqd/010:10:160
690399462,6cyclictest9-21ksoftirqd/010:30:120
134491460,4ptp4l0-21swapper/309:30:103
134491460,3ptp4l0-21swapper/312:07:533
134491460,3ptp4l0-21swapper/211:40:182
134491460,3ptp4l0-21swapper/207:21:222
6905994522,12cyclictest33-21ksoftirqd/208:46:312
690499452,8cyclictest25-21ksoftirqd/109:50:171
6904994526,9cyclictest25-21ksoftirqd/111:50:111
6904994514,5cyclictest25-21ksoftirqd/110:44:031
690499450,5cyclictest25-21ksoftirqd/111:58:361
690499450,5cyclictest25-21ksoftirqd/111:40:131
690499450,5cyclictest25-21ksoftirqd/108:41:231
690399454,8cyclictest9-21ksoftirqd/011:20:210
690399450,7cyclictest9-21ksoftirqd/007:50:260
134491450,4ptp4l0-21swapper/211:12:472
134491450,4ptp4l0-21swapper/209:23:462
134491450,4ptp4l0-21swapper/208:07:262
134491450,4ptp4l0-21swapper/007:24:590
134491450,3ptp4l0-21swapper/211:05:202
134491450,10ptp4l0-21swapper/207:49:102
690599445,3cyclictest33-21ksoftirqd/210:30:122
6905994433,9cyclictest33-21ksoftirqd/207:15:202
6904994428,7cyclictest25-21ksoftirqd/108:50:151
690499440,6cyclictest25-21ksoftirqd/110:54:291
690399444,5cyclictest0-21swapper/011:40:260
690399442,8cyclictest9-21ksoftirqd/010:25:150
690399442,4cyclictest0-21swapper/009:40:170
134491440,6ptp4l0-21swapper/010:05:200
134491440,4ptp4l32459-21apt-get09:15:113
134491440,4ptp4l3006-21apt-get10:30:113
134491440,4ptp4l19981-21apt-get12:15:133
134491440,4ptp4l0-21swapper/310:25:353
134491440,4ptp4l0-21swapper/308:43:183
134491440,3ptp4l0-21swapper/210:00:582
134491440,2ptp4l121rcu_preempt08:45:443
134491440,10ptp4l0-21swapper/310:51:483
6905994331,10cyclictest33-21ksoftirqd/209:15:272
6904994328,3cyclictest25-21ksoftirqd/109:00:261
134491430,5ptp4l0-21swapper/208:30:282
6906994237,3cyclictest41-21ksoftirqd/310:40:013
6905994228,9cyclictest321ktimersoftd/208:15:132
134491420,4ptp4l0-21swapper/309:57:543
134491420,3ptp4l7906-21ls08:20:193
690699411,3cyclictest6500-21tail11:45:223
690599415,6cyclictest33-21ksoftirqd/212:15:202
6905994124,9cyclictest33-21ksoftirqd/209:45:172
134491410,5ptp4l0-21swapper/211:25:262
134491410,4ptp4l30905-21apt-get11:30:123
134491410,4ptp4l26501-21iostat_ios10:10:192
134491410,4ptp4l24203-21meminfo08:55:203
134491410,4ptp4l24203-21meminfo08:55:203
134491410,4ptp4l22799-21apt-get08:55:022
134491410,4ptp4l22799-21apt-get08:55:022
134491410,4ptp4l17833-21meminfo11:00:203
134491410,4ptp4l0-21swapper/308:11:023
134491410,3ptp4l30173-21ls11:25:263
134491410,3ptp4l25008-21ls11:15:213
6906994035,3cyclictest41-21ksoftirqd/312:15:013
6906994035,3cyclictest41-21ksoftirqd/310:50:003
134491400,5ptp4l0-21swapper/312:00:253
134491400,5ptp4l0-21swapper/209:35:142
134491400,4ptp4l2830-21iostat08:10:182
134491400,4ptp4l23415-21diskstats07:45:143
134491400,4ptp4l0-21swapper/310:40:223
134491400,4ptp4l0-21swapper/309:20:153
134491400,4ptp4l0-21swapper/307:14:513
134491400,4ptp4l0-21swapper/211:45:132
134491400,3ptp4l16725-21apt-get09:50:112
134491390,5ptp4l0-21swapper/307:40:123
134491390,4ptp4l0-21swapper/310:20:203
134491390,4ptp4l0-21swapper/310:15:213
134491390,4ptp4l0-21swapper/309:48:443
134491390,4ptp4l0-21swapper/309:44:363
134491390,4ptp4l0-21swapper/307:35:203
134491390,3ptp4l27867-21apt-get09:05:113
134491390,2ptp4l17150-21memory07:30:213
134491380,4ptp4l0-21swapper/312:20:443
134491380,4ptp4l0-21swapper/311:55:153
134491380,4ptp4l0-21swapper/311:35:083
134491380,4ptp4l0-21swapper/309:25:193
134491380,4ptp4l0-21swapper/309:10:353
134491380,4ptp4l0-21swapper/308:35:233
134491380,4ptp4l0-21swapper/307:50:223
134491380,3ptp4l0-21swapper/307:20:273
45542235,11sleep30-21swapper/307:05:113
47802223,12sleep24876-21diskstats07:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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