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2026-01-12 - 15:32
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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 Mon Jan 12, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
943421270,4sleep12902199cyclictest08:45:201
943421270,4sleep12902199cyclictest08:45:201
29022997138,3cyclictest33-21ksoftirqd/208:25:162
29022996733,5cyclictest33-21ksoftirqd/212:10:162
134491670,8ptp4l0-21swapper/212:30:072
134491670,20ptp4l14988-21/usr/sbin/munin12:30:141
29022996534,8cyclictest33-21ksoftirqd/210:30:262
29022996533,5cyclictest33-21ksoftirqd/207:55:212
29022996434,5cyclictest33-21ksoftirqd/212:19:592
29022996424,8cyclictest33-21ksoftirqd/210:07:352
2902299642,35cyclictest0-21swapper/211:39:582
29022996329,5cyclictest33-21ksoftirqd/207:10:202
2902299632,6cyclictest0-21swapper/211:13:592
134491630,19ptp4l23729-21ntp_states10:25:230
29022996232,3cyclictest33-21ksoftirqd/211:35:002
29022996230,6cyclictest33-21ksoftirqd/208:55:262
29022996230,5cyclictest33-21ksoftirqd/212:00:182
29022996229,5cyclictest33-21ksoftirqd/211:55:162
29022996228,6cyclictest33-21ksoftirqd/212:05:202
134491620,4ptp4l0-21swapper/209:04:072
134491620,19ptp4l25810-21ntp_states09:20:220
29022996131,4cyclictest33-21ksoftirqd/208:20:202
29022996130,5cyclictest33-21ksoftirqd/212:35:162
29022996130,5cyclictest33-21ksoftirqd/209:55:272
29022996128,6cyclictest33-21ksoftirqd/212:20:202
29022996125,5cyclictest33-21ksoftirqd/209:40:132
29022996032,7cyclictest33-21ksoftirqd/212:25:142
29022996029,5cyclictest33-21ksoftirqd/210:40:162
29022996029,4cyclictest33-21ksoftirqd/211:20:172
29022996022,7cyclictest33-21ksoftirqd/211:03:122
134491600,4ptp4l0-21swapper/311:40:263
134491600,4ptp4l0-21swapper/209:25:302
134491600,4ptp4l0-21swapper/207:41:352
29022995929,7cyclictest33-21ksoftirqd/208:43:182
29022995925,7cyclictest33-21ksoftirqd/208:05:252
29022995921,7cyclictest33-21ksoftirqd/208:48:572
29022995921,7cyclictest33-21ksoftirqd/208:48:572
134491590,20ptp4l0-21swapper/307:06:173
134491590,15ptp4l7927-21ls11:00:270
29022995830,6cyclictest33-21ksoftirqd/208:20:002
29022995826,4cyclictest33-21ksoftirqd/207:20:002
29022995825,3cyclictest33-21ksoftirqd/207:45:282
29022995823,4cyclictest33-21ksoftirqd/208:35:212
134491580,4ptp4l4068-21df08:35:100
134491580,14ptp4l0-21swapper/012:00:220
29022995727,6cyclictest33-21ksoftirqd/211:50:172
29022995727,4cyclictest33-21ksoftirqd/209:50:272
29022995726,4cyclictest33-21ksoftirqd/210:55:182
29022995724,5cyclictest33-21ksoftirqd/210:10:192
29022995724,5cyclictest33-21ksoftirqd/210:10:192
29022995723,6cyclictest33-21ksoftirqd/209:25:012
29022995723,6cyclictest33-21ksoftirqd/209:10:272
29022995721,5cyclictest33-21ksoftirqd/210:20:242
134491570,17ptp4l0-21swapper/312:10:013
134491560,3ptp4l0-21swapper/109:44:091
29022995528,9cyclictest33-21ksoftirqd/211:15:182
29022995525,3cyclictest33-21ksoftirqd/207:35:272
29022995524,5cyclictest33-21ksoftirqd/209:45:172
29022995517,7cyclictest33-21ksoftirqd/210:53:172
191082550,5sleep12902199cyclictest10:15:261
134491550,3ptp4l0-21swapper/110:42:421
29022995425,5cyclictest33-21ksoftirqd/210:00:272
29022995422,5cyclictest33-21ksoftirqd/207:20:142
29022995422,3cyclictest33-21ksoftirqd/211:25:282
29022995421,4cyclictest33-21ksoftirqd/210:35:442
29022995315,5cyclictest33-21ksoftirqd/210:29:592
134491530,4ptp4l0-21swapper/009:38:040
2902299525,6cyclictest33-21ksoftirqd/211:48:542
2902299522,7cyclictest0-21swapper/209:30:142
29022995224,6cyclictest33-21ksoftirqd/207:50:252
29022995222,5cyclictest33-21ksoftirqd/210:15:272
29022995219,3cyclictest33-21ksoftirqd/208:13:102
29022995219,3cyclictest33-21ksoftirqd/208:13:102
29022995218,4cyclictest33-21ksoftirqd/211:42:062
134491520,5ptp4l0-21swapper/007:16:040
134491520,3ptp4l0-21swapper/008:55:250
29022995126,4cyclictest33-21ksoftirqd/211:05:242
29022995118,5cyclictest33-21ksoftirqd/209:15:222
134491510,4ptp4l0-21swapper/012:11:110
134491510,4ptp4l0-21swapper/010:54:520
134491510,4ptp4l0-21swapper/009:04:010
134491510,4ptp4l0-21swapper/008:08:320
134491510,3ptp4l0-21swapper/011:28:060
134491510,3ptp4l0-21swapper/009:17:560
29022995015,4cyclictest33-21ksoftirqd/209:08:432
134491500,4ptp4l0-21swapper/012:34:470
134491500,4ptp4l0-21swapper/012:24:540
134491500,4ptp4l0-21swapper/011:57:320
134491500,4ptp4l0-21swapper/011:13:060
134491500,4ptp4l0-21swapper/010:46:270
134491500,4ptp4l0-21swapper/010:39:310
134491500,4ptp4l0-21swapper/008:47:270
134491500,4ptp4l0-21swapper/008:47:270
134491500,4ptp4l0-21swapper/008:18:570
134491500,4ptp4l0-21swapper/007:21:500
29022994915,5cyclictest33-21ksoftirqd/208:50:142
134491490,8ptp4l27803-21ntp_states07:05:212
134491490,5ptp4l0-21swapper/008:20:100
134491490,4ptp4l0-21swapper/108:09:111
134491490,4ptp4l0-21swapper/007:43:290
134491490,4ptp4l0-21swapper/007:33:470
2902299484,2cyclictest33-21ksoftirqd/208:30:232
134491480,3ptp4l27852-21cstates11:45:130
134491480,3ptp4l0-21swapper/110:14:031
134491480,3ptp4l0-21swapper/110:14:031
134491480,3ptp4l0-21swapper/109:05:241
2902299470,5cyclictest33-21ksoftirqd/209:37:542
134491470,11ptp4l0-21swapper/010:55:220
2902299467,5cyclictest33-21ksoftirqd/210:49:182
2902299463,6cyclictest33-21ksoftirqd/208:00:162
29022994613,5cyclictest33-21ksoftirqd/207:25:192
134491450,4ptp4l29965-21apt-get11:50:110
134491450,4ptp4l0-21swapper/107:24:481
134491450,4ptp4l0-21swapper/007:51:130
134491450,10ptp4l0-21swapper/012:15:080
134491440,9ptp4l0-21swapper/010:32:100
134491440,6ptp4l6896-21meminfo07:30:212
134491440,5ptp4l0-21swapper/109:15:251
134491440,4ptp4l0-21swapper/012:27:050
134491440,3ptp4l0-21swapper/309:05:183
134491440,3ptp4l0-21swapper/307:15:433
134491440,3ptp4l0-21swapper/112:35:401
134491430,9ptp4l0-21swapper/007:46:130
134491430,9ptp4l0-21swapper/007:28:440
134491430,5ptp4l8699-21df09:55:160
134491430,5ptp4l7027-21irqstats09:50:180
134491430,5ptp4l28316-21python08:15:251
134491430,4ptp4l0-21swapper/110:09:261
134491430,4ptp4l0-21swapper/011:34:430
134491430,3ptp4l0-21swapper/110:25:001
2902399422,38cyclictest0-21swapper/309:42:183
134491420,9ptp4l0-21swapper/009:10:030
134491420,5ptp4l32030-21hddtemp_smartct09:35:151
134491420,5ptp4l20424-21iostat_ios08:00:180
134491420,5ptp4l0-21swapper/107:30:241
134491420,5ptp4l0-21swapper/011:35:140
134491420,5ptp4l0-21swapper/008:50:130
134491420,4ptp4l26132-21users08:10:260
134491420,4ptp4l26132-21users08:10:260
134491420,4ptp4l20067-21apt-get09:10:101
134491420,4ptp4l19100-21ls07:55:273
134491420,4ptp4l18196-21hddtemp_smartct09:05:150
134491420,4ptp4l12158-21python10:00:260
134491420,4ptp4l12100-21apt-get12:25:101
134491420,3ptp4l29305-21apt-get09:30:140
134491420,3ptp4l17767-21apt-get11:25:033
134491420,1ptp4l0-21swapper/009:40:150
134491410,5ptp4l29512-21df08:20:121
134491410,5ptp4l0-21swapper/311:00:123
134491410,5ptp4l0-21swapper/310:35:283
134491410,4ptp4l7315-21ntp_states08:40:251
134491410,4ptp4l5007-21ntp_states09:45:233
134491410,4ptp4l41-21ksoftirqd/308:55:253
134491410,4ptp4l370-21iostat_ios11:55:161
134491410,4ptp4l2546-21df_inode12:00:141
134491410,4ptp4l1721-21df08:30:141
134491410,4ptp4l0-21swapper/111:05:231
134491410,4ptp4l0-21swapper/012:07:250
134491410,4ptp4l0-21swapper/010:20:180
134491410,4ptp4l0-21swapper/010:12:560
134491410,4ptp4l0-21swapper/010:12:560
134491410,3ptp4l959-21ntp_states11:55:213
134491410,3ptp4l32556-21memory08:25:193
134491410,3ptp4l27539-21iostat08:15:173
134491410,3ptp4l16973-21ls10:10:293
134491410,3ptp4l16973-21ls10:10:293
134491410,3ptp4l16661-21memory11:20:203
134491410,3ptp4l15464-21apt-get09:00:111
29021994035,3cyclictest25-21ksoftirqd/112:10:001
29021994026,11cyclictest25-21ksoftirqd/107:59:591
134491400,5ptp4l9616-21open_files08:45:233
134491400,5ptp4l9616-21open_files08:45:233
134491400,5ptp4l5101-21ps09:45:241
134491400,5ptp4l0-21swapper/110:35:121
134491400,5ptp4l0-21swapper/108:51:411
134491400,5ptp4l0-21swapper/007:09:590
134491400,4ptp4l9779-21/usr/sbin/munin12:20:193
134491400,4ptp4l6444-21df_abs09:50:133
134491400,4ptp4l11764-21memory10:00:221
134491400,4ptp4l0-21swapper/310:40:163
134491400,4ptp4l0-21swapper/310:25:193
134491400,4ptp4l0-21swapper/310:00:303
134491400,4ptp4l0-21swapper/308:00:213
134491400,4ptp4l0-21swapper/111:25:191
134491400,4ptp4l0-21swapper/111:20:191
134491400,4ptp4l0-21swapper/110:50:231
134491400,4ptp4l0-21swapper/109:25:131
134491400,4ptp4l0-21swapper/108:35:091
134491400,4ptp4l0-21swapper/011:43:380
134491400,4ptp4l0-21swapper/011:20:240
134491400,4ptp4l0-21swapper/011:16:250
134491400,4ptp4l0-21swapper/011:09:050
134491400,4ptp4l0-21swapper/010:43:150
134491400,4ptp4l0-21swapper/010:15:010
134491400,4ptp4l0-21swapper/010:05:210
134491400,4ptp4l0-21swapper/009:47:210
134491400,4ptp4l0-21swapper/008:43:360
134491400,4ptp4l0-21swapper/008:28:550
134491400,4ptp4l0-21swapper/007:58:560
134491400,3ptp4l2199-21apt-get12:00:123
134491400,3ptp4l20698-21irqstats08:00:191
29023993932,4cyclictest41-21ksoftirqd/309:20:193
29021993934,3cyclictest25-21ksoftirqd/111:45:001
29021993933,3cyclictest25-21ksoftirqd/111:45:191
134491390,4ptp4l7479-21mailstats08:40:273
134491390,4ptp4l4591-21meminfo07:25:203
134491390,4ptp4l1301-21snmpd09:02:553
134491390,4ptp4l0-21swapper/312:35:233
134491390,4ptp4l0-21swapper/312:25:113
134491390,4ptp4l0-21swapper/312:20:003
134491390,4ptp4l0-21swapper/312:13:063
134491390,4ptp4l0-21swapper/311:50:513
134491390,4ptp4l0-21swapper/311:46:273
134491390,4ptp4l0-21swapper/311:30:203
134491390,4ptp4l0-21swapper/311:15:193
134491390,4ptp4l0-21swapper/311:10:033
134491390,4ptp4l0-21swapper/311:05:193
134491390,4ptp4l0-21swapper/310:50:333
134491390,4ptp4l0-21swapper/310:30:133
134491390,4ptp4l0-21swapper/310:20:133
134491390,4ptp4l0-21swapper/309:35:433
134491390,4ptp4l0-21swapper/309:30:173
134491390,4ptp4l0-21swapper/308:50:423
134491390,4ptp4l0-21swapper/308:05:193
134491390,4ptp4l0-21swapper/307:45:263
134491390,4ptp4l0-21swapper/307:43:463
134491390,4ptp4l0-21swapper/307:38:103
134491390,4ptp4l0-21swapper/307:32:523
134491390,4ptp4l0-21swapper/111:50:171
134491390,4ptp4l0-21swapper/111:30:231
134491390,4ptp4l0-21swapper/111:15:101
134491390,4ptp4l0-21swapper/111:00:211
134491390,4ptp4l0-21swapper/110:59:271
134491390,4ptp4l0-21swapper/110:25:241
134491390,4ptp4l0-21swapper/109:31:131
134491390,4ptp4l0-21swapper/109:21:231
134491390,4ptp4l0-21swapper/108:58:101
134491390,4ptp4l0-21swapper/107:35:241
134491390,4ptp4l0-21swapper/012:35:500
134491390,4ptp4l0-21swapper/009:26:090
134491390,4ptp4l0-21swapper/008:30:400
134491390,4ptp4l0-21swapper/007:38:070
134491390,4ptp4l0-21swapper/007:11:220
134491390,3ptp4l9435-21load09:55:223
134491390,3ptp4l24457-21apt-get08:10:103
134491390,3ptp4l24457-21apt-get08:10:103
134491390,3ptp4l0-21swapper/312:30:193
134491390,3ptp4l0-21swapper/308:23:113
134491390,15ptp4l0-21swapper/108:26:551
134491380,4ptp4l13668-21irqrtprio07:45:181
134491380,4ptp4l0-21swapper/310:57:223
134491380,4ptp4l0-21swapper/310:15:153
134491380,4ptp4l0-21swapper/310:05:133
134491380,4ptp4l0-21swapper/308:30:403
134491380,4ptp4l0-21swapper/307:54:583
134491380,4ptp4l0-21swapper/307:10:263
134491380,4ptp4l0-21swapper/112:17:511
134491380,4ptp4l0-21swapper/111:35:211
134491380,4ptp4l0-21swapper/110:45:021
134491380,4ptp4l0-21swapper/110:30:581
134491380,4ptp4l0-21swapper/108:10:031
134491380,4ptp4l0-21swapper/108:10:031
134491380,4ptp4l0-21swapper/107:41:281
134491380,4ptp4l0-21swapper/107:27:401
134491380,3ptp4l15887-21sed07:50:161
134491380,3ptp4l10734-21ls12:20:151
134491380,3ptp4l0-21swapper/311:35:143
134491380,3ptp4l0-21swapper/310:45:193
134491380,3ptp4l0-21swapper/308:36:153
134491380,3ptp4l0-21swapper/307:20:143
134491380,3ptp4l0-21swapper/112:10:461
134491380,3ptp4l0-21swapper/111:12:331
134491380,3ptp4l0-21swapper/109:50:331
134491380,3ptp4l0-21swapper/107:19:031
134491370,5ptp4l30988-21taskset07:13:421
134491370,4ptp4l0-21swapper/309:14:413
134491370,3ptp4l0-21swapper/109:55:171
134491360,4ptp4l0-21swapper/309:27:503
134491270,5ptp4l0-21swapper/107:09:411
134491260,3ptp4l0-21swapper/309:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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