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2026-01-09 - 17:59
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri Jan 09, 2026 12:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311482740,5sleep00-21swapper/011:55:010
27595996423,8cyclictest33-21ksoftirqd/210:49:562
27595996329,4cyclictest33-21ksoftirqd/211:59:592
27595996328,8cyclictest33-21ksoftirqd/209:40:002
134491630,6ptp4l0-21swapper/107:05:191
134491630,4ptp4l21356-21apt08:05:091
134491610,4ptp4l8640-21/usr/sbin/munin12:15:130
134491600,6ptp4l0-21swapper/007:09:540
134491580,4ptp4l0-21swapper/108:51:321
134491580,3ptp4l0-21swapper/209:49:142
134491580,3ptp4l0-21swapper/108:25:061
134491570,4ptp4l0-21swapper/309:38:493
134491570,4ptp4l0-21swapper/107:20:411
134491570,3ptp4l0-21swapper/109:53:051
134491570,13ptp4l0-21swapper/010:25:170
134491560,4ptp4l0-21swapper/110:15:251
27595995524,5cyclictest33-21ksoftirqd/209:34:032
27595995523,6cyclictest33-21ksoftirqd/207:35:282
27595995522,4cyclictest33-21ksoftirqd/208:00:222
27595995424,3cyclictest33-21ksoftirqd/212:00:142
27595995423,10cyclictest33-21ksoftirqd/208:37:052
27595995420,5cyclictest33-21ksoftirqd/211:35:002
134491540,4ptp4l0-21swapper/109:21:101
134491540,3ptp4l0-21swapper/111:06:341
134491540,3ptp4l0-21swapper/007:53:200
134491540,22ptp4l0-21swapper/011:32:300
134491530,4ptp4l0-21swapper/109:01:071
134491530,4ptp4l0-21swapper/008:10:530
134491530,3ptp4l5391-21df08:40:131
134491530,3ptp4l0-21swapper/210:05:262
134491530,3ptp4l0-21swapper/012:25:000
134491530,3ptp4l0-21swapper/008:28:170
27595995217,6cyclictest33-21ksoftirqd/208:20:242
134491520,4ptp4l0-21swapper/112:34:361
134491520,4ptp4l0-21swapper/011:22:490
134491520,4ptp4l0-21swapper/007:13:080
134491520,4ptp4l0-21swapper/007:13:080
134491520,3ptp4l0-21swapper/108:30:101
27595995122,8cyclictest33-21ksoftirqd/207:47:522
134491510,4ptp4l0-21swapper/008:07:130
134491510,4ptp4l0-21swapper/007:44:500
134491510,4ptp4l0-21swapper/007:23:180
134491510,3ptp4l0-21swapper/212:10:192
134491510,3ptp4l0-21swapper/111:46:181
134491510,3ptp4l0-21swapper/108:16:051
2759599509,6cyclictest33-21ksoftirqd/207:55:262
27595995022,8cyclictest33-21ksoftirqd/208:43:392
27595995022,3cyclictest33-21ksoftirqd/211:25:252
27595995020,3cyclictest33-21ksoftirqd/211:50:262
27595995017,5cyclictest33-21ksoftirqd/209:05:212
134491500,4ptp4l0-21swapper/108:45:131
134491500,3ptp4l0-21swapper/008:03:290
134491500,11ptp4l0-21swapper/010:21:010
27596994929,17cyclictest41-21ksoftirqd/311:20:003
27595994924,5cyclictest33-21ksoftirqd/210:29:182
27595994923,6cyclictest33-21ksoftirqd/209:52:292
27595994921,7cyclictest33-21ksoftirqd/211:05:012
27595994921,3cyclictest33-21ksoftirqd/211:15:182
27595994920,6cyclictest33-21ksoftirqd/210:40:242
27595994919,4cyclictest33-21ksoftirqd/212:30:162
27595994914,5cyclictest33-21ksoftirqd/207:15:262
134491490,3ptp4l0-21swapper/211:05:202
134491490,3ptp4l0-21swapper/009:10:070
27595994816,6cyclictest33-21ksoftirqd/210:25:002
27595994815,6cyclictest33-21ksoftirqd/210:00:172
134491480,4ptp4l0-21swapper/212:29:282
134491480,4ptp4l0-21swapper/208:09:162
134491480,3ptp4l0-21swapper/310:35:103
134491480,3ptp4l0-21swapper/111:24:011
134491480,3ptp4l0-21swapper/008:16:470
134491480,10ptp4l0-21swapper/108:55:201
2759699473,42cyclictest0-21swapper/311:06:593
2759599473,2cyclictest121rcu_preempt11:45:002
27595994714,5cyclictest33-21ksoftirqd/211:20:152
27595994714,4cyclictest33-21ksoftirqd/207:10:242
27595994714,4cyclictest33-21ksoftirqd/207:10:242
134491470,4ptp4l0-21swapper/111:25:201
134491470,3ptp4l0-21swapper/112:06:361
134491470,3ptp4l0-21swapper/110:14:041
27595994620,4cyclictest33-21ksoftirqd/212:35:132
27595994620,4cyclictest33-21ksoftirqd/207:25:202
27595994619,8cyclictest33-21ksoftirqd/209:19:422
27595994614,3cyclictest33-21ksoftirqd/211:35:172
27595994612,8cyclictest33-21ksoftirqd/210:10:192
134491460,4ptp4l0-21swapper/210:31:242
134491460,10ptp4l0-21swapper/312:14:163
134491460,10ptp4l0-21swapper/207:34:242
27595994532,11cyclictest33-21ksoftirqd/209:05:012
27595994510,3cyclictest33-21ksoftirqd/209:55:222
134491450,5ptp4l0-21swapper/309:45:223
134491450,5ptp4l0-21swapper/109:45:151
134491450,4ptp4l0-21swapper/112:27:001
134491450,4ptp4l0-21swapper/109:10:161
134491450,4ptp4l0-21swapper/010:39:090
134491450,4ptp4l0-21swapper/009:37:200
134491450,4ptp4l0-21swapper/007:33:150
134491450,3ptp4l0-21swapper/212:24:122
134491450,3ptp4l0-21swapper/112:19:241
134491450,3ptp4l0-21swapper/010:06:440
27595994439,3cyclictest33-21ksoftirqd/207:40:152
27595994432,3cyclictest33-21ksoftirqd/208:32:082
27595994425,5cyclictest33-21ksoftirqd/208:58:492
27595994422,5cyclictest33-21ksoftirqd/210:36:242
134491440,5ptp4l0-21swapper/110:20:241
134491440,4ptp4l3656-21ls07:25:210
134491440,4ptp4l0-21swapper/011:09:260
134491440,3ptp4l0-21swapper/109:25:011
134491440,3ptp4l0-21swapper/109:07:251
134491440,3ptp4l0-21swapper/007:59:440
134491440,2ptp4l0-21swapper/010:48:340
134491440,10ptp4l0-21swapper/208:45:162
27596994311,30cyclictest0-21swapper/309:24:083
27595994338,3cyclictest33-21ksoftirqd/209:45:002
27595994331,3cyclictest33-21ksoftirqd/207:51:172
27595994311,5cyclictest33-21ksoftirqd/208:25:252
134491430,9ptp4l0-21swapper/209:24:502
134491430,9ptp4l0-21swapper/010:04:010
134491430,4ptp4l7452-21apt-get07:35:111
134491430,4ptp4l22038-21apt-get11:35:113
134491430,4ptp4l17138-21apt-get10:15:120
134491430,4ptp4l16510-21users10:10:280
134491430,4ptp4l15301-21apt-get12:30:120
134491430,4ptp4l0-21swapper/009:17:570
134491430,3ptp4l0-21swapper/111:53:381
27595994212,10cyclictest33-21ksoftirqd/207:20:112
134491420,9ptp4l0-21swapper/012:12:340
134491420,8ptp4l0-21swapper/209:12:442
134491420,5ptp4l0-21swapper/110:55:141
134491420,5ptp4l0-21swapper/109:55:251
134491420,4ptp4l28296-21apt-get08:20:123
134491420,4ptp4l1860-21ntp_states09:40:220
134491420,4ptp4l15080-21apt-get11:20:123
134491420,4ptp4l10694-21apt-get12:20:113
134491420,4ptp4l10455-21apt-get11:10:122
134491420,4ptp4l0-21swapper/108:22:311
134491420,4ptp4l0-21swapper/007:45:580
134491420,3ptp4l4330-21ls09:45:200
134491420,36ptp4l9-21ksoftirqd/012:05:260
134491420,2ptp4l121rcu_preempt07:50:271
27595994132,3cyclictest33-21ksoftirqd/211:45:092
27595994124,4cyclictest33-21ksoftirqd/210:15:112
27595994110,10cyclictest33-21ksoftirqd/210:50:282
27595994110,10cyclictest33-21ksoftirqd/210:50:282
27593994136,3cyclictest9-21ksoftirqd/010:00:000
134491410,9ptp4l0-21swapper/310:41:213
134491410,7ptp4l0-21swapper/009:07:270
134491410,5ptp4l31236-21/usr/sbin/munin07:15:210
134491410,5ptp4l24951-21/usr/sbin/munin09:20:230
134491410,5ptp4l0-21swapper/307:55:143
134491410,5ptp4l0-21swapper/107:55:191
134491410,5ptp4l0-21swapper/010:40:100
134491410,4ptp4l5635-21apt-get11:00:111
134491410,4ptp4l19943-21df11:30:131
134491410,4ptp4l0-21swapper/310:45:173
134491410,4ptp4l0-21swapper/209:25:152
134491410,4ptp4l0-21swapper/111:14:271
134491410,4ptp4l0-21swapper/109:40:021
134491410,4ptp4l0-21swapper/011:43:440
134491410,4ptp4l0-21swapper/011:25:280
134491410,4ptp4l0-21swapper/011:12:590
134491410,4ptp4l0-21swapper/010:51:210
134491410,4ptp4l0-21swapper/010:51:210
134491410,4ptp4l0-21swapper/009:03:390
134491410,4ptp4l0-21swapper/007:38:560
134491410,3ptp4l3621-21df_inode10:55:150
134491410,3ptp4l0-21swapper/111:58:361
134491410,3ptp4l0-21swapper/008:46:280
134491410,10ptp4l0-21swapper/310:27:583
2759599407,5cyclictest33-21ksoftirqd/212:05:162
27595994034,3cyclictest33-21ksoftirqd/208:15:272
27595994027,3cyclictest33-21ksoftirqd/212:18:222
27595994027,10cyclictest33-21ksoftirqd/208:50:232
134491400,5ptp4l21574-21df09:15:121
134491400,5ptp4l0-21swapper/312:30:133
134491400,5ptp4l0-21swapper/309:40:253
134491400,5ptp4l0-21swapper/309:25:273
134491400,5ptp4l0-21swapper/107:45:111
134491400,5ptp4l0-21swapper/107:40:101
134491400,5ptp4l0-21swapper/010:30:250
134491400,5ptp4l0-21swapper/008:35:130
134491400,4ptp4l6281-21python07:30:231
134491400,4ptp4l4721-21memory12:05:203
134491400,4ptp4l31541-21ls09:35:191
134491400,4ptp4l0-21swapper/311:55:273
134491400,4ptp4l0-21swapper/308:50:173
134491400,4ptp4l0-21swapper/208:10:212
134491400,4ptp4l0-21swapper/112:00:001
134491400,4ptp4l0-21swapper/111:15:241
134491400,4ptp4l0-21swapper/108:00:171
134491400,4ptp4l0-21swapper/012:20:440
134491400,4ptp4l0-21swapper/011:02:110
134491400,4ptp4l0-21swapper/009:30:060
134491400,4ptp4l0-21swapper/008:57:290
134491400,4ptp4l0-21swapper/008:31:150
134491400,3ptp4l24085-21hddtemp_smartct08:10:151
134491400,3ptp4l17599-21apt-get12:35:101
134491400,3ptp4l1242-21diskstats10:50:161
134491400,3ptp4l1242-21diskstats10:50:161
27596993927,10cyclictest41-21ksoftirqd/310:05:433
27594993934,3cyclictest25-21ksoftirqd/112:10:131
27593993933,4cyclictest9-21ksoftirqd/011:40:000
134491390,5ptp4l0-21swapper/310:02:583
134491390,5ptp4l0-21swapper/111:40:251
134491390,4ptp4l13950-21memory12:25:213
134491390,4ptp4l0-21swapper/311:40:223
134491390,4ptp4l0-21swapper/311:03:003
134491390,4ptp4l0-21swapper/310:30:183
134491390,4ptp4l0-21swapper/310:20:003
134491390,4ptp4l0-21swapper/310:11:143
134491390,4ptp4l0-21swapper/309:30:163
134491390,4ptp4l0-21swapper/308:25:163
134491390,4ptp4l0-21swapper/308:07:193
134491390,4ptp4l0-21swapper/307:25:183
134491390,4ptp4l0-21swapper/307:20:133
134491390,4ptp4l0-21swapper/307:10:143
134491390,4ptp4l0-21swapper/307:10:143
134491390,4ptp4l0-21swapper/210:58:542
134491390,4ptp4l0-21swapper/111:39:291
134491390,4ptp4l0-21swapper/110:41:331
134491390,4ptp4l0-21swapper/110:35:231
134491390,4ptp4l0-21swapper/110:25:111
134491390,4ptp4l0-21swapper/110:05:001
134491390,4ptp4l0-21swapper/108:35:121
134491390,4ptp4l0-21swapper/107:27:321
134491390,4ptp4l0-21swapper/107:16:541
134491390,4ptp4l0-21swapper/107:10:181
134491390,4ptp4l0-21swapper/107:10:181
134491390,4ptp4l0-21swapper/011:45:180
134491390,4ptp4l0-21swapper/009:25:000
134491390,4ptp4l0-21swapper/008:51:280
134491390,4ptp4l0-21swapper/008:40:230
134491390,3ptp4l13503-21meminfo10:05:321
134491390,3ptp4l0-21swapper/309:55:173
27593993832,3cyclictest9-21ksoftirqd/012:40:000
134491380,4ptp4l31312-21df_abs10:45:141
134491380,4ptp4l30217-21processes11:50:223
134491380,4ptp4l18777-21ntpq12:35:213
134491380,4ptp4l0-21swapper/311:45:273
134491380,4ptp4l0-21swapper/311:26:293
134491380,4ptp4l0-21swapper/310:56:023
134491380,4ptp4l0-21swapper/310:50:143
134491380,4ptp4l0-21swapper/310:50:143
134491380,4ptp4l0-21swapper/310:20:203
134491380,4ptp4l0-21swapper/309:07:063
134491380,4ptp4l0-21swapper/308:57:043
134491380,4ptp4l0-21swapper/308:40:173
134491380,4ptp4l0-21swapper/308:10:133
134491380,4ptp4l0-21swapper/307:45:163
134491380,4ptp4l0-21swapper/307:19:523
134491380,4ptp4l0-21swapper/112:20:221
134491380,4ptp4l0-21swapper/110:34:301
134491380,4ptp4l0-21swapper/012:00:130
134491380,4ptp4l0-21swapper/011:56:320
134491380,4ptp4l0-21swapper/011:17:120
134491380,4ptp4l0-21swapper/009:52:430
134491380,4ptp4l0-21swapper/008:22:380
134491380,3ptp4l15662-21mailstats07:50:233
134491380,3ptp4l0-21swapper/311:10:243
134491380,3ptp4l0-21swapper/307:30:543
27596993731,4cyclictest41-21ksoftirqd/308:39:023
134491370,4ptp4l0-21swapper/312:15:143
134491370,4ptp4l0-21swapper/309:50:133
134491370,4ptp4l0-21swapper/307:35:453
134491370,3ptp4l0-21swapper/308:02:433
134491360,4ptp4l0-21swapper/312:00:323
134491360,4ptp4l0-21swapper/311:31:573
134491360,4ptp4l0-21swapper/308:32:093
134491360,4ptp4l0-21swapper/307:40:113
134491360,3ptp4l0-21swapper/309:10:273
134491360,3ptp4l0-21swapper/309:00:453
134491360,3ptp4l0-21swapper/109:31:311
27596993429,3cyclictest41-21ksoftirqd/308:47:283
27596993429,3cyclictest41-21ksoftirqd/308:17:113
27596993428,4cyclictest41-21ksoftirqd/309:15:003
264472233,13sleep226591-21mailstats07:05:232
137891225,10phc2sys0-21swapper/307:05:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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