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2026-03-19 - 15:44
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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 Mar 19, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204312630,4sleep00-21swapper/008:50:160
134491620,3ptp4l7005-21memory09:30:202
134491590,4ptp4l0-21swapper/211:55:112
134491590,4ptp4l0-21swapper/207:05:162
134491590,3ptp4l0-21swapper/008:45:240
5876995825,7cyclictest25-21ksoftirqd/110:20:001
134491580,3ptp4l0-21swapper/210:56:352
134491580,3ptp4l0-21swapper/208:30:022
134491580,3ptp4l0-21swapper/207:48:132
134491580,3ptp4l0-21swapper/207:14:222
134491580,3ptp4l0-21swapper/011:50:220
5876995725,4cyclictest25-21ksoftirqd/111:50:171
134491560,3ptp4l0-21swapper/211:20:242
134491560,3ptp4l0-21swapper/210:00:212
134491560,3ptp4l0-21swapper/112:30:161
134491550,3ptp4l0-21swapper/210:46:362
5876995425,4cyclictest25-21ksoftirqd/109:00:341
5876995421,4cyclictest25-21ksoftirqd/107:57:361
134491540,3ptp4l0-21swapper/210:29:072
5876995323,3cyclictest25-21ksoftirqd/112:05:221
5876995319,4cyclictest25-21ksoftirqd/111:05:131
5876995318,7cyclictest25-21ksoftirqd/111:00:261
5876995318,7cyclictest25-21ksoftirqd/111:00:261
5876995318,7cyclictest25-21ksoftirqd/110:10:241
134491530,3ptp4l0-21swapper/211:40:462
134491530,18ptp4l0-21swapper/007:21:430
134491530,17ptp4l0-21swapper/011:24:570
5876995222,7cyclictest25-21ksoftirqd/111:55:131
134491520,4ptp4l0-21swapper/212:16:062
134491520,4ptp4l0-21swapper/209:21:022
134491520,4ptp4l0-21swapper/209:21:022
5876995123,4cyclictest25-21ksoftirqd/109:35:001
5876995119,8cyclictest25-21ksoftirqd/110:45:271
5876995117,9cyclictest25-21ksoftirqd/111:15:001
134491510,4ptp4l0-21swapper/110:04:211
134491510,4ptp4l0-21swapper/109:39:191
134491510,4ptp4l0-21swapper/108:48:111
134491510,3ptp4l0-21swapper/107:32:101
5876995018,8cyclictest25-21ksoftirqd/112:00:261
5876995014,8cyclictest25-21ksoftirqd/110:40:201
134491500,4ptp4l0-21swapper/212:29:542
134491500,4ptp4l0-21swapper/209:47:012
134491500,4ptp4l0-21swapper/208:50:482
134491500,4ptp4l0-21swapper/107:24:361
134491500,4ptp4l0-21swapper/107:15:081
134491500,4ptp4l0-21swapper/007:10:500
134491500,3ptp4l0-21swapper/209:43:112
5876994933,4cyclictest25-21ksoftirqd/107:15:001
5876994920,4cyclictest25-21ksoftirqd/111:29:091
5876994920,4cyclictest25-21ksoftirqd/110:51:341
5876994917,5cyclictest25-21ksoftirqd/111:42:161
5876994916,7cyclictest25-21ksoftirqd/110:55:141
5876994916,3cyclictest25-21ksoftirqd/109:23:201
5876994916,3cyclictest25-21ksoftirqd/109:23:201
134491490,4ptp4l0-21swapper/209:19:512
134491490,4ptp4l0-21swapper/207:30:582
134491490,4ptp4l0-21swapper/109:06:251
134491490,3ptp4l0-21swapper/107:50:211
5876994822,7cyclictest25-21ksoftirqd/109:58:161
5876994822,7cyclictest25-21ksoftirqd/109:58:151
5876994820,7cyclictest25-21ksoftirqd/112:35:111
5876994820,7cyclictest25-21ksoftirqd/110:25:181
5876994820,3cyclictest25-21ksoftirqd/111:15:241
5876994817,8cyclictest25-21ksoftirqd/110:35:271
5876994817,4cyclictest25-21ksoftirqd/111:20:121
5876994816,9cyclictest25-21ksoftirqd/110:25:001
5876994815,7cyclictest25-21ksoftirqd/111:50:011
5876994815,7cyclictest25-21ksoftirqd/107:25:141
5876994815,7cyclictest25-21ksoftirqd/107:25:141
134491480,4ptp4l0-21swapper/210:31:192
134491480,4ptp4l0-21swapper/210:31:192
134491480,4ptp4l0-21swapper/207:28:252
134491480,4ptp4l0-21swapper/207:28:252
134491480,11ptp4l0-21swapper/207:21:022
5876994723,7cyclictest25-21ksoftirqd/108:55:521
5876994719,7cyclictest25-21ksoftirqd/110:30:181
5876994719,7cyclictest25-21ksoftirqd/110:30:181
5876994719,3cyclictest25-21ksoftirqd/108:00:261
5876994718,7cyclictest25-21ksoftirqd/111:35:141
5876994717,3cyclictest25-21ksoftirqd/109:25:121
5876994715,4cyclictest25-21ksoftirqd/108:50:571
5876994713,3cyclictest25-21ksoftirqd/109:44:311
134491470,4ptp4l22435-21apt-get10:05:121
134491470,4ptp4l0-21swapper/309:34:563
134491470,4ptp4l0-21swapper/307:06:303
134491470,3ptp4l0-21swapper/108:10:241
134491470,3ptp4l0-21swapper/108:10:241
5876994622,7cyclictest25-21ksoftirqd/108:20:431
5876994614,7cyclictest25-21ksoftirqd/107:45:011
587699459,5cyclictest25-21ksoftirqd/112:15:151
5876994512,4cyclictest25-21ksoftirqd/111:33:501
134491450,9ptp4l0-21swapper/211:45:022
134491450,5ptp4l2318-21gnome-shell11:22:583
134491450,3ptp4l0-21swapper/209:35:302
134491450,3ptp4l0-21swapper/209:10:312
134491450,3ptp4l0-21swapper/108:38:321
134491450,2ptp4l0-21swapper/307:25:483
134491450,2ptp4l0-21swapper/307:25:483
5876994417,6cyclictest25-21ksoftirqd/108:30:271
5876994413,3cyclictest25-21ksoftirqd/109:52:521
134491440,9ptp4l0-21swapper/210:50:282
134491440,9ptp4l0-21swapper/208:27:072
134491440,5ptp4l0-21swapper/112:25:111
134491440,4ptp4l13997-21ls08:35:210
134491440,3ptp4l26888-21apt-get07:55:100
5876994333,3cyclictest25-21ksoftirqd/109:12:051
5876994318,6cyclictest25-21ksoftirqd/112:10:131
134491430,9ptp4l0-21swapper/209:55:182
134491430,9ptp4l0-21swapper/209:55:182
134491430,9ptp4l0-21swapper/208:47:122
134491430,8ptp4l0-21swapper/211:14:532
134491430,6ptp4l0-21swapper/012:25:380
134491430,5ptp4l0-21swapper/011:35:100
134491430,5ptp4l0-21swapper/010:40:250
134491430,4ptp4l31478-21apt-get09:15:110
134491430,4ptp4l0-21swapper/310:24:453
134491430,4ptp4l0-21swapper/307:54:243
5876994235,4cyclictest25-21ksoftirqd/108:08:331
5876994211,3cyclictest25-21ksoftirqd/112:24:291
134491420,5ptp4l14316-21ps10:55:230
134491420,5ptp4l0-21swapper/309:15:203
134491420,5ptp4l0-21swapper/010:45:270
134491420,5ptp4l0-21swapper/008:00:270
134491420,4ptp4l18939-21ntp_states09:55:220
134491420,4ptp4l18939-21ntp_states09:55:220
134491420,4ptp4l15123-21apt-get07:30:103
134491420,4ptp4l0-21swapper/311:00:263
134491420,4ptp4l0-21swapper/311:00:263
134491420,4ptp4l0-21swapper/308:35:193
134491420,4ptp4l0-21swapper/208:36:512
134491420,4ptp4l0-21swapper/208:19:082
134491420,4ptp4l0-21swapper/109:15:111
134491420,3ptp4l0-21swapper/309:42:523
134491420,3ptp4l0-21swapper/208:58:052
134491420,3ptp4l0-21swapper/108:43:521
134491410,9ptp4l0-21swapper/208:43:412
134491410,5ptp4l5630-21perf07:09:590
134491410,5ptp4l0-21swapper/312:20:183
134491410,5ptp4l0-21swapper/208:22:592
134491410,5ptp4l0-21swapper/108:25:131
134491410,5ptp4l0-21swapper/012:05:130
134491410,5ptp4l0-21swapper/009:50:200
134491410,5ptp4l0-21swapper/009:05:480
134491410,5ptp4l0-21swapper/009:00:150
134491410,5ptp4l0-21swapper/008:55:190
134491410,4ptp4l9-21ksoftirqd/011:30:130
134491410,4ptp4l7749-21/usr/sbin/munin08:20:260
134491410,4ptp4l7432-21ps10:40:222
134491410,4ptp4l29385-21df09:10:120
134491410,4ptp4l27350-21apt-get12:35:100
134491410,4ptp4l24586-21apt-get09:00:122
134491410,4ptp4l20979-21irqstats10:00:200
134491410,4ptp4l15854-21hddtemp_smartct11:00:150
134491410,4ptp4l15854-21hddtemp_smartct11:00:150
134491410,4ptp4l13255-21hddtemp_smartct07:25:160
134491410,4ptp4l13255-21hddtemp_smartct07:25:160
134491410,4ptp4l0-21swapper/309:25:113
134491410,4ptp4l0-21swapper/210:35:112
134491410,4ptp4l0-21swapper/207:17:402
134491410,4ptp4l0-21swapper/007:45:170
134491410,3ptp4l29178-21apt-get09:10:103
134491410,3ptp4l28147-21ntp_states10:15:220
134491410,3ptp4l27406-21df11:25:133
134491410,3ptp4l24083-21ls11:15:270
134491410,3ptp4l13110-21apt-get10:55:113
134491410,3ptp4l0-21swapper/310:52:193
134491410,3ptp4l0-21swapper/207:58:172
134491410,2ptp4l19428-21grep12:15:260
134491410,11ptp4l0-21swapper/310:30:033
134491410,11ptp4l0-21swapper/310:30:033
5876994035,3cyclictest25-21ksoftirqd/109:45:231
134491400,8ptp4l0-21swapper/211:18:282
134491400,5ptp4l18505-21grep07:35:210
134491400,5ptp4l0-21swapper/309:20:283
134491400,5ptp4l0-21swapper/309:20:283
134491400,5ptp4l0-21swapper/307:40:113
134491400,5ptp4l0-21swapper/107:09:491
134491400,5ptp4l0-21swapper/012:04:210
134491400,5ptp4l0-21swapper/007:51:510
134491400,4ptp4l396-21python08:05:253
134491400,4ptp4l0-21swapper/312:00:223
134491400,4ptp4l0-21swapper/310:45:153
134491400,4ptp4l0-21swapper/310:35:113
134491400,4ptp4l0-21swapper/309:00:213
134491400,4ptp4l0-21swapper/212:11:292
134491400,4ptp4l0-21swapper/212:00:192
134491400,4ptp4l0-21swapper/210:23:222
134491400,4ptp4l0-21swapper/210:14:582
134491400,4ptp4l0-21swapper/207:50:572
134491400,4ptp4l0-21swapper/207:40:012
134491400,4ptp4l0-21swapper/207:35:232
134491400,4ptp4l0-21swapper/010:52:200
134491400,4ptp4l0-21swapper/010:20:220
134491400,4ptp4l0-21swapper/009:35:220
134491400,4ptp4l0-21swapper/008:10:270
134491400,4ptp4l0-21swapper/008:10:270
134491400,3ptp4l8689-21diskstats08:25:140
134491400,3ptp4l4065-21diskstats08:15:141
134491400,3ptp4l29206-21apt-get08:00:112
134491400,3ptp4l23383-21meminfo10:05:200
134491400,3ptp4l121rcu_preempt09:23:410
134491400,3ptp4l121rcu_preempt09:23:410
134491400,3ptp4l0-21swapper/310:00:123
134491400,3ptp4l0-21swapper/011:46:580
134491400,3ptp4l0-21swapper/011:05:220
134491400,3ptp4l0-21swapper/008:34:170
134491400,2ptp4l0-21swapper/311:30:113
134491400,2ptp4l0-21swapper/007:18:320
134491390,5ptp4l0-21swapper/307:45:133
134491390,5ptp4l0-21swapper/211:02:572
134491390,5ptp4l0-21swapper/211:02:572
134491390,4ptp4l0-21swapper/311:43:333
134491390,4ptp4l0-21swapper/311:17:373
134491390,4ptp4l0-21swapper/310:45:013
134491390,4ptp4l0-21swapper/309:36:203
134491390,4ptp4l0-21swapper/309:09:473
134491390,4ptp4l0-21swapper/308:15:253
134491390,4ptp4l0-21swapper/307:55:193
134491390,4ptp4l0-21swapper/307:35:023
134491390,4ptp4l0-21swapper/307:23:533
134491390,4ptp4l0-21swapper/212:35:352
134491390,4ptp4l0-21swapper/211:51:172
134491390,4ptp4l0-21swapper/211:35:372
134491390,4ptp4l0-21swapper/211:25:142
134491390,4ptp4l0-21swapper/211:05:562
134491390,4ptp4l0-21swapper/210:18:212
134491390,4ptp4l0-21swapper/210:05:152
134491390,4ptp4l0-21swapper/209:50:322
134491390,4ptp4l0-21swapper/209:08:232
134491390,4ptp4l0-21swapper/208:11:382
134491390,4ptp4l0-21swapper/208:11:382
134491390,4ptp4l0-21swapper/208:05:282
134491390,4ptp4l0-21swapper/011:43:530
134491390,4ptp4l0-21swapper/011:25:120
134491390,4ptp4l0-21swapper/010:36:060
134491390,4ptp4l0-21swapper/010:14:470
134491390,4ptp4l0-21swapper/009:31:590
134491390,4ptp4l0-21swapper/008:09:440
134491390,4ptp4l0-21swapper/007:41:090
134491390,3ptp4l3751-21apt-get09:25:132
134491390,3ptp4l0-21swapper/310:25:313
134491390,3ptp4l0-21swapper/211:30:222
134491390,3ptp4l0-21swapper/107:45:341
134491390,3ptp4l0-21swapper/012:30:220
134491390,3ptp4l0-21swapper/011:10:440
134491390,3ptp4l0-21swapper/009:47:290
134491390,2ptp4l1301-21snmpd12:28:223
134491380,4ptp4l30318-21grep08:00:213
134491380,4ptp4l0-21swapper/312:30:003
134491380,4ptp4l0-21swapper/311:12:203
134491380,4ptp4l0-21swapper/310:11:393
134491380,4ptp4l0-21swapper/308:55:323
134491380,4ptp4l0-21swapper/308:48:373
134491380,4ptp4l0-21swapper/308:44:243
134491380,4ptp4l0-21swapper/308:26:353
134491380,4ptp4l0-21swapper/307:11:073
134491380,4ptp4l0-21swapper/212:33:412
134491380,4ptp4l0-21swapper/212:21:332
134491380,4ptp4l0-21swapper/212:07:342
134491380,4ptp4l0-21swapper/009:25:490
134491380,4ptp4l0-21swapper/008:40:570
134491380,3ptp4l0-21swapper/312:35:203
134491380,3ptp4l0-21swapper/311:57:333
134491380,3ptp4l0-21swapper/310:15:113
134491380,3ptp4l0-21swapper/310:05:283
134491380,3ptp4l0-21swapper/307:17:593
134491380,3ptp4l0-21swapper/107:38:231
134491380,3ptp4l0-21swapper/012:11:560
134491380,3ptp4l0-21swapper/010:25:350
134491380,3ptp4l0-21swapper/008:16:420
134491380,3ptp4l0-21swapper/007:30:560
134491370,4ptp4l0-21swapper/311:05:263
134491370,4ptp4l0-21swapper/308:30:533
134491370,4ptp4l0-21swapper/308:23:313
134491370,4ptp4l0-21swapper/010:32:370
134491370,4ptp4l0-21swapper/010:32:370
134491370,3ptp4l0-21swapper/312:11:333
134491370,3ptp4l0-21swapper/312:08:053
134491370,3ptp4l0-21swapper/309:50:323
134491370,3ptp4l0-21swapper/309:47:243
134491370,3ptp4l0-21swapper/308:50:423
134491370,3ptp4l0-21swapper/012:22:020
134491370,3ptp4l0-21swapper/009:40:150
134491360,4ptp4l0-21swapper/011:55:470
134491360,3ptp4l0-21swapper/308:11:203
134491360,3ptp4l0-21swapper/308:11:203
134491350,3ptp4l0-21swapper/312:19:123
134491350,3ptp4l0-21swapper/311:47:293
134491330,4ptp4l0-21swapper/311:54:183
134491330,2ptp4l0-21swapper/309:55:193
134491330,2ptp4l0-21swapper/309:55:193
5878992519,4cyclictest41-21ksoftirqd/311:36:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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