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2026-05-23 - 17:43
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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 May 23, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197021630,3sleep22137899cyclictest07:35:382
2248221610,7sleep22137899cyclictest10:40:012
21378997915,61cyclictest30395-21ls08:35:292
21378996930,7cyclictest33-21ksoftirqd/211:45:262
21378996533,4cyclictest33-21ksoftirqd/211:15:162
21378996526,3cyclictest33-21ksoftirqd/209:05:002
21378996332,3cyclictest33-21ksoftirqd/211:25:592
21378996326,6cyclictest33-21ksoftirqd/207:25:002
21378996326,4cyclictest33-21ksoftirqd/211:44:592
134491630,5ptp4l0-21swapper/312:10:593
21378996232,7cyclictest33-21ksoftirqd/209:35:152
21378996230,5cyclictest33-21ksoftirqd/211:51:412
21378996225,8cyclictest33-21ksoftirqd/210:53:192
21378996221,7cyclictest33-21ksoftirqd/210:15:012
21378996135,3cyclictest33-21ksoftirqd/208:30:252
21378996133,6cyclictest33-21ksoftirqd/212:15:002
21378996131,5cyclictest33-21ksoftirqd/212:35:262
21378996131,3cyclictest33-21ksoftirqd/209:15:262
21378996126,8cyclictest33-21ksoftirqd/209:59:282
21378996122,8cyclictest33-21ksoftirqd/209:52:582
21378996032,3cyclictest33-21ksoftirqd/210:20:262
21378996026,3cyclictest33-21ksoftirqd/207:14:362
21378996025,6cyclictest33-21ksoftirqd/209:10:202
21378996025,6cyclictest33-21ksoftirqd/209:10:202
21378996020,8cyclictest33-21ksoftirqd/207:28:312
21378995932,6cyclictest33-21ksoftirqd/212:09:592
21378995931,7cyclictest33-21ksoftirqd/209:30:152
21378995930,4cyclictest33-21ksoftirqd/211:07:032
21378995928,6cyclictest33-21ksoftirqd/207:52:432
21378995928,3cyclictest33-21ksoftirqd/210:45:012
21378995924,5cyclictest33-21ksoftirqd/207:45:292
21378995923,8cyclictest33-21ksoftirqd/210:03:292
21378995922,8cyclictest33-21ksoftirqd/209:08:532
21378995920,8cyclictest33-21ksoftirqd/212:02:522
21378995919,5cyclictest33-21ksoftirqd/210:55:202
62752580,7sleep02137699cyclictest08:55:160
21378995827,4cyclictest33-21ksoftirqd/210:20:012
134491580,4ptp4l0-21swapper/310:57:073
134491580,4ptp4l0-21swapper/309:30:223
134491580,4ptp4l0-21swapper/008:05:030
21378995727,5cyclictest33-21ksoftirqd/209:20:272
21378995723,9cyclictest33-21ksoftirqd/209:00:002
21378995723,4cyclictest33-21ksoftirqd/209:28:232
21378995718,8cyclictest33-21ksoftirqd/208:00:492
21378995625,5cyclictest33-21ksoftirqd/207:15:272
134491560,4ptp4l0-21swapper/308:28:253
134491560,3ptp4l0-21swapper/312:04:063
134491560,3ptp4l0-21swapper/009:53:460
21378995522,5cyclictest33-21ksoftirqd/208:05:282
21378995521,7cyclictest33-21ksoftirqd/208:17:142
134491550,3ptp4l0-21swapper/309:07:403
134491550,3ptp4l0-21swapper/210:30:272
21378995424,8cyclictest33-21ksoftirqd/207:30:182
21378995421,4cyclictest33-21ksoftirqd/208:50:142
21378995419,5cyclictest33-21ksoftirqd/212:20:202
21378995418,4cyclictest33-21ksoftirqd/211:35:182
174222540,3sleep10-21swapper/108:10:161
21378995323,6cyclictest33-21ksoftirqd/210:25:182
21378995320,5cyclictest33-21ksoftirqd/211:00:152
21378995319,11cyclictest33-21ksoftirqd/209:40:202
21378995319,11cyclictest33-21ksoftirqd/209:40:202
134491530,4ptp4l0-21swapper/107:05:411
134491530,4ptp4l0-21swapper/107:05:411
134491530,3ptp4l0-21swapper/310:15:323
134491530,14ptp4l20390-21python07:05:250
134491530,14ptp4l20390-21python07:05:250
21378995218,6cyclictest33-21ksoftirqd/207:45:012
134491520,3ptp4l0-21swapper/011:15:440
134491520,3ptp4l0-21swapper/009:58:280
2137899514,5cyclictest33-21ksoftirqd/212:20:002
2137899512,7cyclictest0-21swapper/209:45:192
21378995119,4cyclictest33-21ksoftirqd/208:41:422
21378995119,4cyclictest33-21ksoftirqd/208:41:422
134491510,4ptp4l0-21swapper/310:09:113
134491510,4ptp4l0-21swapper/012:33:240
134491510,4ptp4l0-21swapper/009:47:550
134491510,4ptp4l0-21swapper/009:34:160
134491510,3ptp4l0-21swapper/011:02:450
2137899506,2cyclictest33-21ksoftirqd/210:45:282
2137899503,6cyclictest0-21swapper/207:55:252
21378995025,4cyclictest33-21ksoftirqd/211:30:272
21378995023,6cyclictest33-21ksoftirqd/208:45:132
21378995014,3cyclictest33-21ksoftirqd/210:05:232
134491500,5ptp4l25-21ksoftirqd/109:51:421
134491500,4ptp4l0-21swapper/311:19:423
134491500,4ptp4l0-21swapper/011:33:470
134491500,3ptp4l0-21swapper/311:23:313
134491500,3ptp4l0-21swapper/011:49:580
134491500,3ptp4l0-21swapper/011:28:350
134491500,2ptp4l0-21swapper/009:27:440
134491490,3ptp4l0-21swapper/310:54:043
2137899483,3cyclictest33-21ksoftirqd/212:30:182
2137899482,3cyclictest33-21ksoftirqd/207:44:052
134491480,2ptp4l0-21swapper/012:02:260
2137899472,5cyclictest33-21ksoftirqd/211:10:312
2137899472,4cyclictest33-21ksoftirqd/211:55:222
2137899472,3cyclictest121rcu_preempt08:22:192
2137899471,5cyclictest33-21ksoftirqd/212:25:182
2137899471,3cyclictest121rcu_preempt08:13:202
134491470,4ptp4l0-21swapper/308:59:183
134491470,3ptp4l0-21swapper/010:48:580
2137899465,2cyclictest33-21ksoftirqd/208:26:212
134491460,5ptp4l0-21swapper/312:25:593
134491460,4ptp4l0-21swapper/010:43:590
134491460,3ptp4l0-21swapper/211:24:462
134491460,2ptp4l0-21swapper/309:42:093
134491460,2ptp4l0-21swapper/309:42:093
134491450,4ptp4l19464-21apt-get08:15:120
134491450,4ptp4l19189-21apt-get11:40:263
134491450,4ptp4l0-21swapper/309:23:413
134491450,4ptp4l0-21swapper/107:56:571
134491450,4ptp4l0-21swapper/007:25:310
21379994438,3cyclictest718-21chrt07:35:273
2137799440,43cyclictest0-21swapper/112:26:591
134491440,9ptp4l0-21swapper/011:22:590
134491440,5ptp4l0-21swapper/012:10:090
134491440,4ptp4l0-21swapper/307:45:003
134491440,4ptp4l0-21swapper/307:45:003
134491440,3ptp4l401ktimersoftd/307:15:573
134491440,3ptp4l22941-21apt-get11:50:110
134491440,3ptp4l0-21swapper/311:28:343
134491440,11ptp4l0-21swapper/311:35:323
134491440,10ptp4l0-21swapper/012:17:260
2137799431,41cyclictest0-21swapper/109:05:591
134491430,9ptp4l0-21swapper/010:11:490
134491430,9ptp4l0-21swapper/009:17:170
134491430,4ptp4l2318-21gnome-shell12:09:593
134491430,4ptp4l0-21swapper/010:39:340
134491430,3ptp4l12523-21apt-get08:00:133
2137799422,39cyclictest0-21swapper/107:49:281
2137799422,38cyclictest0-21swapper/108:03:191
134491420,5ptp4l0-21swapper/008:50:150
134491420,5ptp4l0-21swapper/007:30:160
134491420,4ptp4l4359-21df_inode10:00:151
134491420,4ptp4l27548-21memory08:30:210
134491420,4ptp4l11534-21memory09:05:200
134491420,4ptp4l0-21swapper/010:32:200
134491420,4ptp4l0-21swapper/007:10:010
2137999412,2cyclictest0-21swapper/308:46:193
21377994110,29cyclictest0-21swapper/112:20:391
134491410,5ptp4l20338-21/usr/sbin/munin08:15:191
134491410,5ptp4l0-21swapper/010:57:280
134491410,4ptp4l9-21ksoftirqd/011:05:180
134491410,4ptp4l31570-21meminfo07:30:203
134491410,4ptp4l29746-21ls07:25:273
134491410,4ptp4l0-21swapper/309:25:113
134491410,4ptp4l0-21swapper/012:27:470
134491410,4ptp4l0-21swapper/012:22:350
134491410,4ptp4l0-21swapper/011:55:080
134491410,4ptp4l0-21swapper/011:37:510
134491410,4ptp4l0-21swapper/009:43:010
134491410,4ptp4l0-21swapper/009:43:010
134491410,4ptp4l0-21swapper/008:10:230
134491410,4ptp4l0-21swapper/008:00:060
134491410,4ptp4l0-21swapper/007:41:330
134491410,4ptp4l0-21swapper/007:41:330
134491410,4ptp4l0-21swapper/007:36:110
134491410,4ptp4l0-21swapper/007:17:310
134491410,2ptp4l0-21swapper/311:57:233
134491400,5ptp4l7988-21sshd11:15:371
134491400,5ptp4l7310-21python08:55:271
134491400,5ptp4l25-21ksoftirqd/107:25:201
134491400,5ptp4l20791-21ps10:35:213
134491400,5ptp4l0-21swapper/310:10:173
134491400,5ptp4l0-21swapper/308:50:183
134491400,5ptp4l0-21swapper/307:50:153
134491400,5ptp4l0-21swapper/009:20:070
134491400,5ptp4l0-21swapper/008:24:330
134491400,4ptp4l30332-21irqstats09:45:193
134491400,4ptp4l29918-21needreboot08:35:233
134491400,4ptp4l22913-21apt-get11:50:033
134491400,4ptp4l16233-21awk08:05:273
134491400,4ptp4l11379-21/usr/sbin/munin10:15:170
134491400,4ptp4l0-21swapper/312:35:213
134491400,4ptp4l0-21swapper/311:05:113
134491400,4ptp4l0-21swapper/310:40:213
134491400,4ptp4l0-21swapper/310:30:173
134491400,4ptp4l0-21swapper/310:00:133
134491400,4ptp4l0-21swapper/308:20:193
134491400,4ptp4l0-21swapper/307:11:543
134491400,4ptp4l0-21swapper/012:35:470
134491400,4ptp4l0-21swapper/012:05:400
134491400,4ptp4l0-21swapper/011:40:230
134491400,4ptp4l0-21swapper/010:53:260
134491400,4ptp4l0-21swapper/010:27:570
134491400,4ptp4l0-21swapper/010:20:200
134491400,4ptp4l0-21swapper/009:00:380
134491400,4ptp4l0-21swapper/008:40:530
134491400,4ptp4l0-21swapper/008:40:530
134491400,4ptp4l0-21swapper/008:28:590
134491400,4ptp4l0-21swapper/007:55:240
134491400,4ptp4l0-21swapper/007:50:330
134491400,3ptp4l6566-21meminfo07:45:210
134491400,3ptp4l10414-21df07:55:153
134491400,2ptp4l26030-21apt-get07:20:133
134491400,18ptp4l0-21swapper/109:38:221
2137799390,38cyclictest27336-21kworker/1:110:10:281
134491390,5ptp4l0-21swapper/112:05:231
134491390,5ptp4l0-21swapper/111:20:181
134491390,4ptp4l32087-21df_inode09:50:153
134491390,4ptp4l2137999cyclictest08:10:223
134491390,4ptp4l0-21swapper/312:30:503
134491390,4ptp4l0-21swapper/312:15:433
134491390,4ptp4l0-21swapper/311:50:013
134491390,4ptp4l0-21swapper/311:30:283
134491390,4ptp4l0-21swapper/311:10:143
134491390,4ptp4l0-21swapper/311:01:033
134491390,4ptp4l0-21swapper/310:45:143
134491390,4ptp4l0-21swapper/310:25:053
134491390,4ptp4l0-21swapper/309:58:173
134491390,4ptp4l0-21swapper/309:35:173
134491390,4ptp4l0-21swapper/309:15:233
134491390,4ptp4l0-21swapper/309:10:093
134491390,4ptp4l0-21swapper/309:10:093
134491390,4ptp4l0-21swapper/309:03:183
134491390,4ptp4l0-21swapper/308:43:373
134491390,4ptp4l0-21swapper/308:43:373
134491390,4ptp4l0-21swapper/308:31:443
134491390,4ptp4l0-21swapper/308:15:183
134491390,4ptp4l0-21swapper/307:45:233
134491390,4ptp4l0-21swapper/112:35:181
134491390,4ptp4l0-21swapper/111:51:321
134491390,4ptp4l0-21swapper/108:50:201
134491390,4ptp4l0-21swapper/108:21:391
134491390,4ptp4l0-21swapper/107:40:211
134491390,4ptp4l0-21swapper/107:40:211
134491390,4ptp4l0-21swapper/107:30:121
134491390,4ptp4l0-21swapper/107:21:061
134491390,4ptp4l0-21swapper/011:10:280
134491390,4ptp4l0-21swapper/010:05:330
134491390,4ptp4l0-21swapper/010:00:140
134491390,4ptp4l0-21swapper/009:12:030
134491390,4ptp4l0-21swapper/009:12:030
134491390,4ptp4l0-21swapper/008:47:230
134491390,4ptp4l0-21swapper/008:35:110
134491390,4ptp4l0-21swapper/007:20:180
134491390,3ptp4l0-21swapper/009:37:220
134491380,5ptp4l0-21swapper/112:18:321
134491380,4ptp4l0-21swapper/312:20:023
134491380,4ptp4l0-21swapper/310:20:133
134491380,4ptp4l0-21swapper/112:30:431
134491380,4ptp4l0-21swapper/112:12:431
134491380,4ptp4l0-21swapper/112:00:271
134491380,4ptp4l0-21swapper/111:27:381
134491380,4ptp4l0-21swapper/111:11:081
134491380,4ptp4l0-21swapper/111:08:311
134491380,4ptp4l0-21swapper/111:00:311
134491380,4ptp4l0-21swapper/110:50:021
134491380,4ptp4l0-21swapper/110:42:301
134491380,4ptp4l0-21swapper/110:35:191
134491380,4ptp4l0-21swapper/109:20:071
134491380,4ptp4l0-21swapper/109:13:031
134491380,4ptp4l0-21swapper/109:13:031
134491380,4ptp4l0-21swapper/109:00:481
134491380,4ptp4l0-21swapper/108:07:031
134491380,4ptp4l0-21swapper/107:50:191
134491380,4ptp4l0-21swapper/107:39:431
134491380,4ptp4l0-21swapper/107:16:071
134491380,4ptp4l0-21swapper/107:10:041
134491380,3ptp4l0-21swapper/111:56:431
134491380,3ptp4l0-21swapper/110:25:491
134491380,3ptp4l0-21swapper/110:22:461
134491380,3ptp4l0-21swapper/110:15:271
134491380,3ptp4l0-21swapper/109:25:151
134491380,3ptp4l0-21swapper/108:40:211
134491380,3ptp4l0-21swapper/108:40:211
134491370,4ptp4l0-21swapper/111:47:561
134491370,4ptp4l0-21swapper/110:32:251
134491370,4ptp4l0-21swapper/110:08:281
134491370,4ptp4l0-21swapper/108:46:291
134491370,4ptp4l0-21swapper/108:27:211
134491370,3ptp4l0-21swapper/111:39:101
134491370,3ptp4l0-21swapper/110:59:071
134491370,3ptp4l0-21swapper/109:46:051
134491370,3ptp4l0-21swapper/109:32:431
134491370,3ptp4l0-21swapper/108:38:511
134491360,3ptp4l0-21swapper/111:42:341
134491360,3ptp4l0-21swapper/109:57:281
134491360,3ptp4l0-21swapper/109:16:531
134491350,4ptp4l0-21swapper/108:33:181
134491330,3ptp4l0-21swapper/111:31:281
21377993024,4cyclictest25-21ksoftirqd/110:46:321
21377992923,3cyclictest25-21ksoftirqd/109:40:231
21377992923,3cyclictest25-21ksoftirqd/109:40:231
196192233,13sleep219892-21irqstats07:05:192
196192233,13sleep219892-21irqstats07:05:192
190332143,5sleep30-21swapper/307:05:123
190332143,5sleep30-21swapper/307:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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