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2026-04-23 - 00:40
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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 Apr 22, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491670,4ptp4l10776-21cat12:20:193
134491620,4ptp4l26851-21ntp_states11:45:212
134491620,4ptp4l0-21swapper/212:23:032
134491600,5ptp4l0-21swapper/211:20:132
134491600,4ptp4l11402-21apt-get11:15:021
27364995930,7cyclictest25-21ksoftirqd/111:49:371
134491590,3ptp4l0-21swapper/011:15:020
27364995827,4cyclictest25-21ksoftirqd/110:19:551
134491580,3ptp4l0-21swapper/009:57:200
27364995725,4cyclictest25-21ksoftirqd/112:06:071
134491570,4ptp4l0-21swapper/107:06:591
134491570,3ptp4l0-21swapper/308:03:193
27364995626,6cyclictest25-21ksoftirqd/111:09:371
27364995626,4cyclictest25-21ksoftirqd/109:50:151
134491560,17ptp4l0-21swapper/007:50:470
27364995526,7cyclictest25-21ksoftirqd/109:55:191
27364995526,3cyclictest25-21ksoftirqd/110:44:101
27364995526,3cyclictest25-21ksoftirqd/110:44:101
27364995524,4cyclictest25-21ksoftirqd/110:48:391
134491550,3ptp4l0-21swapper/311:50:173
27364995429,6cyclictest25-21ksoftirqd/112:00:591
27364995426,6cyclictest25-21ksoftirqd/107:31:061
27364995423,3cyclictest25-21ksoftirqd/109:50:001
27364995418,7cyclictest25-21ksoftirqd/109:25:191
134491540,3ptp4l0-21swapper/110:58:171
27364995326,7cyclictest25-21ksoftirqd/110:38:321
27364995324,3cyclictest25-21ksoftirqd/111:34:001
27364995322,4cyclictest25-21ksoftirqd/110:23:361
27364995320,3cyclictest25-21ksoftirqd/109:30:561
27364995319,4cyclictest25-21ksoftirqd/108:15:201
27364995316,4cyclictest25-21ksoftirqd/108:55:261
134491530,4ptp4l0-21swapper/012:06:060
134491530,3ptp4l0-21swapper/108:43:541
134491530,3ptp4l0-21swapper/107:28:151
27364995221,8cyclictest25-21ksoftirqd/107:45:131
27364995221,7cyclictest25-21ksoftirqd/108:25:191
27364995217,7cyclictest25-21ksoftirqd/108:05:211
27364995217,6cyclictest25-21ksoftirqd/109:00:241
27364995216,4cyclictest25-21ksoftirqd/110:30:001
134491520,4ptp4l0-21swapper/011:03:160
134491520,4ptp4l0-21swapper/010:27:020
134491520,4ptp4l0-21swapper/008:33:480
134491520,3ptp4l0-21swapper/110:05:071
134491520,3ptp4l0-21swapper/010:30:130
27364995125,7cyclictest25-21ksoftirqd/111:57:591
27364995122,7cyclictest25-21ksoftirqd/112:35:221
134491510,8ptp4l25590-21iostat07:05:150
134491510,4ptp4l14238-21apt-get11:20:123
134491510,4ptp4l0-21swapper/210:07:552
134491510,4ptp4l0-21swapper/107:23:131
27364995037,3cyclictest25-21ksoftirqd/112:30:001
27364995024,6cyclictest25-21ksoftirqd/109:19:161
27364995016,7cyclictest25-21ksoftirqd/110:30:151
27364995012,8cyclictest25-21ksoftirqd/108:00:141
134491500,4ptp4l0-21swapper/207:08:252
134491500,4ptp4l0-21swapper/011:06:140
134491500,4ptp4l0-21swapper/008:52:170
134491500,3ptp4l0-21swapper/008:09:510
27364994920,6cyclictest25-21ksoftirqd/112:30:271
27364994919,4cyclictest25-21ksoftirqd/107:55:171
27364994918,4cyclictest25-21ksoftirqd/109:40:171
27364994918,2cyclictest25-21ksoftirqd/109:13:441
27364994916,3cyclictest25-21ksoftirqd/111:22:331
134491490,4ptp4l0-21swapper/209:38:132
134491490,4ptp4l0-21swapper/109:39:321
134491490,4ptp4l0-21swapper/107:42:521
134491490,4ptp4l0-21swapper/007:38:250
27364994820,7cyclictest25-21ksoftirqd/112:15:181
27364994816,2cyclictest25-21ksoftirqd/110:12:421
27364994815,3cyclictest25-21ksoftirqd/109:05:211
27364994814,4cyclictest25-21ksoftirqd/107:50:131
134491480,4ptp4l0-21swapper/312:11:383
134491480,4ptp4l0-21swapper/012:37:220
134491480,4ptp4l0-21swapper/009:53:380
134491480,3ptp4l0-21swapper/111:02:251
134491480,3ptp4l0-21swapper/107:37:151
134491480,3ptp4l0-21swapper/007:42:090
27364994716,4cyclictest25-21ksoftirqd/107:15:271
134491470,4ptp4l0-21swapper/209:27:152
134491470,4ptp4l0-21swapper/109:22:201
134491470,4ptp4l0-21swapper/008:29:530
134491470,3ptp4l0-21swapper/111:25:031
134491470,3ptp4l0-21swapper/009:40:510
27364994615,9cyclictest25-21ksoftirqd/111:15:011
2736499457,6cyclictest25-21ksoftirqd/111:40:211
2736499455,6cyclictest25-21ksoftirqd/107:10:221
27364994534,3cyclictest25-21ksoftirqd/108:50:011
134491450,4ptp4l32165-21apt-get08:30:143
134491450,4ptp4l0-21swapper/209:34:182
134491450,4ptp4l0-21swapper/110:04:011
134491450,4ptp4l0-21swapper/108:12:341
134491450,10ptp4l0-21swapper/209:00:212
27364994439,3cyclictest25-21ksoftirqd/112:25:001
27364994438,3cyclictest25-21ksoftirqd/110:50:271
2736499442,3cyclictest121rcu_preempt08:35:011
27364994412,6cyclictest25-21ksoftirqd/112:15:011
134491440,9ptp4l0-21swapper/010:22:450
134491440,6ptp4l0-21swapper/207:50:192
134491440,4ptp4l2609-21apt-get12:05:112
134491440,4ptp4l0-21swapper/307:08:273
134491440,3ptp4l0-21swapper/309:05:233
134491440,3ptp4l0-21swapper/211:15:162
134491440,10ptp4l0-21swapper/207:10:172
27365994339,3cyclictest33-21ksoftirqd/207:40:002
27365994332,9cyclictest33-21ksoftirqd/211:05:182
27364994337,3cyclictest25-21ksoftirqd/111:40:001
27364994337,3cyclictest25-21ksoftirqd/108:55:011
134491430,9ptp4l0-21swapper/210:57:322
134491430,9ptp4l0-21swapper/209:44:312
134491430,9ptp4l0-21swapper/011:54:000
134491430,8ptp4l0-21swapper/210:42:562
134491430,8ptp4l0-21swapper/210:42:562
134491430,5ptp4l22947-21apt-get08:10:112
134491430,4ptp4l26300-21iostat11:45:160
134491430,4ptp4l18836-21apt-get11:30:120
134491430,4ptp4l15187-21meminfo11:20:200
134491430,4ptp4l0-21swapper/108:38:481
134491430,3ptp4l23117-21apt-get09:20:112
134491430,2ptp4l0-21swapper/009:02:570
134491430,11ptp4l0-21swapper/008:40:240
134491430,10ptp4l0-21swapper/210:14:452
134491430,10ptp4l0-21swapper/007:14:460
27364994215,7cyclictest25-21ksoftirqd/111:50:251
134491420,6ptp4l5669-21/usr/sbin/munin07:30:230
134491420,4ptp4l9659-21diskstats11:10:150
134491420,4ptp4l3069-21meminfo08:35:190
134491420,4ptp4l28687-21ntp_states08:20:241
134491420,3ptp4l26185-21ls08:15:200
134491420,3ptp4l23117-21apt-get09:20:113
134491420,3ptp4l2239-21apt-get09:45:100
134491420,3ptp4l20805-21apt-get09:15:130
27365994136,3cyclictest33-21ksoftirqd/212:40:002
27365994135,4cyclictest33-21ksoftirqd/210:24:102
134691410,10getstats0-21swapper/310:14:063
134491410,9ptp4l0-21swapper/211:51:412
134491410,5ptp4l387-21ps10:50:180
134491410,5ptp4l0-21swapper/212:15:112
134491410,5ptp4l0-21swapper/208:05:132
134491410,4ptp4l6880-21apt-get09:55:122
134491410,4ptp4l31572-21users07:15:260
134491410,4ptp4l30903-21iostat11:55:180
134491410,4ptp4l28693-21ntp_states08:20:230
134491410,4ptp4l24481-21ls10:30:252
134491410,4ptp4l24014-21iostat11:40:190
134491410,4ptp4l17098-21meminfo10:15:193
134491410,4ptp4l16573-21hddtemp_smartct10:15:150
134491410,4ptp4l14405-21apt-get12:30:020
134491410,4ptp4l14153-21df_inode10:10:130
134491410,4ptp4l11852-21apt-get12:25:020
134491410,4ptp4l0-21swapper/309:00:003
134491410,3ptp4l32652-21apt-get12:00:122
134491410,3ptp4l3121-21ls07:25:202
134491410,3ptp4l28630-21meminfo10:40:210
134491410,3ptp4l28630-21meminfo10:40:210
134491410,3ptp4l0-21swapper/007:27:290
27365994035,3cyclictest33-21ksoftirqd/211:35:002
134491400,5ptp4l0-21swapper/310:55:113
134491400,5ptp4l0-21swapper/308:10:123
134491400,5ptp4l0-21swapper/011:35:190
134491400,5ptp4l0-21swapper/010:35:140
134491400,5ptp4l0-21swapper/009:05:150
134491400,4ptp4l30006-21/usr/sbin/munin09:35:113
134491400,4ptp4l12011-21iostat07:45:170
134491400,4ptp4l10081-21diskstats12:20:130
134491400,4ptp4l0-21swapper/311:15:143
134491400,4ptp4l0-21swapper/309:55:113
134491400,4ptp4l0-21swapper/309:40:273
134491400,4ptp4l0-21swapper/209:48:482
134491400,4ptp4l0-21swapper/209:14:502
134491400,4ptp4l0-21swapper/209:05:222
134491400,4ptp4l0-21swapper/208:30:352
134491400,4ptp4l0-21swapper/207:56:272
134491400,4ptp4l0-21swapper/207:45:032
134491400,4ptp4l0-21swapper/012:01:340
134491400,4ptp4l0-21swapper/010:45:140
134491400,4ptp4l0-21swapper/007:20:390
134491400,3ptp4l7164-21hddtemp_smartct08:45:150
134491400,3ptp4l3725-21ntp_states12:05:233
134491400,3ptp4l26357-21ls09:25:190
134491400,3ptp4l12331-21meminfo08:55:210
27366993934,3cyclictest41-21ksoftirqd/307:40:163
2736699390,2cyclictest121rcu_preempt12:25:173
134691390,9getstats0-21swapper/310:20:223
134491390,5ptp4l0-21swapper/310:38:373
134491390,5ptp4l0-21swapper/010:55:160
134491390,5ptp4l0-21swapper/009:20:150
134491390,5ptp4l0-21swapper/009:10:230
134491390,4ptp4l22550-21ls11:35:263
134491390,4ptp4l0-21swapper/310:01:433
134491390,4ptp4l0-21swapper/309:45:133
134491390,4ptp4l0-21swapper/309:00:223
134491390,4ptp4l0-21swapper/308:46:373
134491390,4ptp4l0-21swapper/308:40:243
134491390,4ptp4l0-21swapper/308:38:423
134491390,4ptp4l0-21swapper/307:52:173
134491390,4ptp4l0-21swapper/307:22:023
134491390,4ptp4l0-21swapper/212:10:202
134491390,4ptp4l0-21swapper/211:45:012
134491390,4ptp4l0-21swapper/211:10:332
134491390,4ptp4l0-21swapper/211:03:142
134491390,4ptp4l0-21swapper/210:48:552
134491390,4ptp4l0-21swapper/210:27:472
134491390,4ptp4l0-21swapper/209:54:472
134491390,4ptp4l0-21swapper/208:54:442
134491390,4ptp4l0-21swapper/208:44:472
134491390,4ptp4l0-21swapper/207:15:252
134491390,4ptp4l0-21swapper/012:12:560
134491390,4ptp4l0-21swapper/007:55:220
134491390,3ptp4l9632-21hddtemp_smartct10:00:160
134491390,3ptp4l30583-21iostat09:35:170
134491390,3ptp4l23530-21ps08:10:170
134491390,3ptp4l18751-21fschecks_time08:00:150
134491390,3ptp4l16744-21df11:25:140
134491390,3ptp4l0-21swapper/210:54:402
134491390,3ptp4l0-21swapper/012:15:170
134491390,3ptp4l0-21swapper/010:05:270
134491390,2ptp4l28662-21ls09:30:190
27365993833,3cyclictest33-21ksoftirqd/210:35:142
134491380,4ptp4l2736699cyclictest07:33:263
134491380,4ptp4l0-21swapper/312:36:483
134491380,4ptp4l0-21swapper/312:30:453
134491380,4ptp4l0-21swapper/312:00:103
134491380,4ptp4l0-21swapper/311:45:553
134491380,4ptp4l0-21swapper/311:29:123
134491380,4ptp4l0-21swapper/310:40:423
134491380,4ptp4l0-21swapper/310:40:423
134491380,4ptp4l0-21swapper/310:27:123
134491380,4ptp4l0-21swapper/310:05:143
134491380,4ptp4l0-21swapper/309:33:473
134491380,4ptp4l0-21swapper/307:35:113
134491380,4ptp4l0-21swapper/307:25:383
134491380,4ptp4l0-21swapper/307:10:303
134491380,4ptp4l0-21swapper/212:31:072
134491380,4ptp4l0-21swapper/212:27:132
134491380,4ptp4l0-21swapper/211:55:512
134491380,4ptp4l0-21swapper/211:35:172
134491380,4ptp4l0-21swapper/211:26:212
134491380,4ptp4l0-21swapper/210:00:312
134491380,4ptp4l0-21swapper/209:16:362
134491380,4ptp4l0-21swapper/208:48:082
134491380,4ptp4l0-21swapper/208:37:512
134491380,4ptp4l0-21swapper/208:15:192
134491380,4ptp4l0-21swapper/207:43:132
134491380,4ptp4l0-21swapper/207:32:122
134491380,3ptp4l0-21swapper/312:16:523
134491380,3ptp4l0-21swapper/310:45:203
134491380,3ptp4l0-21swapper/309:18:003
134491380,3ptp4l0-21swapper/308:52:023
134491380,3ptp4l0-21swapper/308:08:193
134491380,3ptp4l0-21swapper/307:55:483
134491380,3ptp4l0-21swapper/208:03:552
27365993733,3cyclictest33-21ksoftirqd/207:21:342
134491370,4ptp4l0-21swapper/311:42:233
134491370,4ptp4l0-21swapper/311:10:123
134491370,4ptp4l0-21swapper/310:52:323
134491370,4ptp4l0-21swapper/309:50:553
134491370,4ptp4l0-21swapper/308:15:203
134491370,4ptp4l0-21swapper/210:16:082
134491370,4ptp4l0-21swapper/208:25:112
134491370,3ptp4l0-21swapper/309:12:143
134491370,3ptp4l0-21swapper/308:25:173
134491370,3ptp4l0-21swapper/307:49:023
134491370,3ptp4l0-21swapper/208:58:032
134491360,4ptp4l0-21swapper/311:06:523
134491360,4ptp4l0-21swapper/208:22:302
134491360,3ptp4l2736699cyclictest08:21:323
134491360,3ptp4l0-21swapper/309:28:463
134491360,3ptp4l0-21swapper/307:15:043
134491350,3ptp4l0-21swapper/311:02:343
27366993429,3cyclictest41-21ksoftirqd/311:56:263
134491270,4ptp4l0-21swapper/311:34:103
134491270,3ptp4l0-21swapper/310:33:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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