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2026-03-14 - 23:52
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Sat Mar 14, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1312221800,4sleep1627499cyclictest08:35:001
1819821160,3sleep0627399cyclictest08:45:140
235732770,4sleep00-21swapper/011:15:170
6275996525,9cyclictest33-21ksoftirqd/211:54:592
6275996525,9cyclictest33-21ksoftirqd/211:54:592
32862630,5sleep10-21swapper/109:20:251
278292630,5sleep20-21swapper/211:25:142
134491610,5ptp4l0-21swapper/110:55:211
134491610,4ptp4l0-21swapper/210:50:482
134491610,4ptp4l0-21swapper/012:10:120
134491610,18ptp4l30042-21df_abs09:10:140
134491590,3ptp4l13221-21apt-get07:25:120
134491590,3ptp4l13023-21ls09:40:260
134491590,3ptp4l0-21swapper/012:31:190
6275995823,4cyclictest33-21ksoftirqd/209:05:002
134491580,4ptp4l0-21swapper/208:19:302
134491570,4ptp4l212-21systemd-journal08:57:532
134491570,3ptp4l0-21swapper/212:30:192
134491560,5ptp4l0-21swapper/311:25:173
134491560,4ptp4l0-21swapper/108:50:471
134491560,4ptp4l0-21swapper/012:05:130
134491560,3ptp4l0-21swapper/111:03:241
134491560,3ptp4l0-21swapper/111:03:241
134491560,3ptp4l0-21swapper/107:40:291
134491550,4ptp4l0-21swapper/308:44:243
134491550,4ptp4l0-21swapper/211:35:352
134491550,4ptp4l0-21swapper/111:47:011
134491550,3ptp4l0-21swapper/008:16:300
134491550,12ptp4l0-21swapper/112:05:141
134491540,4ptp4l0-21swapper/112:16:451
6275995324,3cyclictest33-21ksoftirqd/212:25:152
6275995317,5cyclictest33-21ksoftirqd/208:29:082
162482530,3sleep00-21swapper/009:50:130
162482530,3sleep00-21swapper/009:50:130
134491530,4ptp4l0-21swapper/209:21:142
134491530,4ptp4l0-21swapper/108:09:411
134491530,4ptp4l0-21swapper/011:56:180
6275995235,16cyclictest33-21ksoftirqd/210:49:592
6275995221,9cyclictest33-21ksoftirqd/209:55:462
6275995216,4cyclictest33-21ksoftirqd/210:43:512
6275995214,6cyclictest33-21ksoftirqd/207:30:222
134491520,4ptp4l0-21swapper/212:01:212
134491520,4ptp4l0-21swapper/211:18:412
134491520,4ptp4l0-21swapper/209:12:502
134491520,4ptp4l0-21swapper/011:55:000
134491520,3ptp4l0-21swapper/010:57:090
6275995123,8cyclictest33-21ksoftirqd/208:41:052
6275995121,3cyclictest33-21ksoftirqd/209:38:522
134491510,5ptp4l0-21swapper/010:46:480
134491510,4ptp4l0-21swapper/210:17:392
134491510,4ptp4l0-21swapper/209:15:462
134491510,4ptp4l0-21swapper/207:29:302
134491510,4ptp4l0-21swapper/109:36:341
134491510,4ptp4l0-21swapper/010:25:310
134491510,4ptp4l0-21swapper/007:13:240
134491510,3ptp4l4891-21hddtemp_smartct10:35:171
134491510,3ptp4l0-21swapper/210:03:392
134491510,3ptp4l0-21swapper/007:48:360
627599509,9cyclictest33-21ksoftirqd/208:15:012
627599502,4cyclictest0-21swapper/207:21:412
6275995017,4cyclictest33-21ksoftirqd/210:56:402
134491500,4ptp4l0-21swapper/208:48:202
134491500,4ptp4l0-21swapper/208:08:552
134491500,4ptp4l0-21swapper/207:10:542
134491500,4ptp4l0-21swapper/111:52:371
134491500,4ptp4l0-21swapper/111:52:371
134491500,4ptp4l0-21swapper/009:32:280
134491500,3ptp4l0-21swapper/208:37:102
134491500,3ptp4l0-21swapper/010:39:190
627599493,2cyclictest121rcu_preempt07:45:582
6275994921,7cyclictest33-21ksoftirqd/209:43:512
6275994918,6cyclictest33-21ksoftirqd/212:10:012
627599491,3cyclictest121rcu_preempt08:51:592
134491490,4ptp4l0-21swapper/312:37:453
134491490,4ptp4l0-21swapper/309:18:243
134491490,4ptp4l0-21swapper/211:42:132
134491490,4ptp4l0-21swapper/209:47:102
134491490,4ptp4l0-21swapper/012:23:480
134491490,4ptp4l0-21swapper/007:51:240
134491490,2ptp4l0-21swapper/108:26:491
134491490,12ptp4l0-21swapper/007:24:140
6275994818,5cyclictest33-21ksoftirqd/211:05:172
134491480,9ptp4l0-21swapper/211:47:362
134491480,4ptp4l0-21swapper/311:55:123
134491480,4ptp4l0-21swapper/311:09:383
134491480,4ptp4l0-21swapper/310:14:553
134491480,4ptp4l0-21swapper/309:53:533
134491480,4ptp4l0-21swapper/309:53:533
134491480,4ptp4l0-21swapper/210:21:342
134491480,4ptp4l0-21swapper/112:00:091
134491480,4ptp4l0-21swapper/011:34:360
134491480,4ptp4l0-21swapper/011:10:530
134491480,3ptp4l0-21swapper/107:30:511
134491480,3ptp4l0-21swapper/008:01:490
134491480,2ptp4l0-21swapper/310:20:143
134491480,12ptp4l5043-21sshd07:05:221
6275994716,5cyclictest33-21ksoftirqd/212:15:122
6275994714,3cyclictest33-21ksoftirqd/210:35:192
6275994711,3cyclictest33-21ksoftirqd/208:34:332
627599470,2cyclictest121rcu_preempt10:32:592
627599470,2cyclictest121rcu_preempt09:25:582
134491470,5ptp4l0-21swapper/007:09:250
134491470,4ptp4l0-21swapper/307:59:063
134491470,4ptp4l0-21swapper/011:42:150
134491470,3ptp4l0-21swapper/211:58:282
134491470,3ptp4l0-21swapper/112:10:401
627599462,2cyclictest121rcu_preempt07:41:582
627499462,43cyclictest0-21swapper/107:11:591
134491460,7ptp4l0-21swapper/109:08:531
134491460,4ptp4l0-21swapper/311:15:133
134491460,4ptp4l0-21swapper/011:39:350
134491460,4ptp4l0-21swapper/011:04:040
134491460,4ptp4l0-21swapper/011:04:040
134491460,3ptp4l0-21swapper/211:31:532
134491460,10ptp4l0-21swapper/209:50:512
134491460,10ptp4l0-21swapper/209:50:512
6275994513,3cyclictest33-21ksoftirqd/207:54:012
6275994511,5cyclictest33-21ksoftirqd/212:35:142
627599450,2cyclictest121rcu_preempt08:03:592
134491450,5ptp4l0-21swapper/310:50:133
134491450,5ptp4l0-21swapper/009:05:280
134491450,4ptp4l7901-21ls08:20:262
134491450,4ptp4l25304-21apt-get10:10:102
134491450,4ptp4l0-21swapper/309:49:573
134491450,4ptp4l0-21swapper/207:56:522
134491450,4ptp4l0-21swapper/111:16:411
134491450,3ptp4l0-21swapper/311:47:213
134491450,3ptp4l0-21swapper/211:20:112
134491450,3ptp4l0-21swapper/210:08:122
134491450,11ptp4l0-21swapper/009:19:590
134491450,10ptp4l0-21swapper/009:49:570
6275994411,6cyclictest33-21ksoftirqd/212:20:262
627499442,40cyclictest0-21swapper/110:00:381
134491440,3ptp4l0-21swapper/308:26:283
134491440,3ptp4l0-21swapper/109:59:581
134491440,3ptp4l0-21swapper/108:38:301
134491440,3ptp4l0-21swapper/107:51:401
134491440,3ptp4l0-21swapper/011:23:390
6275994337,4cyclictest33-21ksoftirqd/211:00:132
6275994337,4cyclictest33-21ksoftirqd/211:00:132
627599432,2cyclictest121rcu_preempt07:19:002
134491430,9ptp4l0-21swapper/211:12:552
134491430,9ptp4l0-21swapper/011:28:130
134491430,9ptp4l0-21swapper/010:19:450
134491430,5ptp4l8406-21ls09:30:271
134491430,5ptp4l15043-21users08:35:280
134491430,5ptp4l0-21swapper/011:05:210
134491430,4ptp4l7734-21meminfo10:40:170
134491430,4ptp4l10922-21apt-get07:20:121
134491430,3ptp4l0-21swapper/310:17:423
134491430,3ptp4l0-21swapper/110:48:301
6276994237,3cyclictest41-21ksoftirqd/311:39:593
6275994216,7cyclictest33-21ksoftirqd/209:34:592
6275994216,5cyclictest33-21ksoftirqd/212:10:262
627499422,39cyclictest0-21swapper/110:22:181
134491420,5ptp4l0-21swapper/310:55:193
134491420,5ptp4l0-21swapper/008:10:120
134491420,4ptp4l4322-21apt-get09:25:110
134491420,4ptp4l23426-21diskstats12:25:161
134491420,4ptp4l19346-21meminfo09:55:210
134491420,4ptp4l14168-21meminfo07:25:201
134491420,4ptp4l0-21swapper/108:12:561
134491420,3ptp4l121rcu_preempt08:40:220
134491420,3ptp4l0-21swapper/110:34:541
627499412,2cyclictest0-21swapper/109:51:591
627499412,2cyclictest0-21swapper/109:51:591
134491410,8ptp4l0-21swapper/207:38:352
134491410,5ptp4l29691-21df_inode08:00:131
134491410,5ptp4l21111-21iostat08:50:180
134491410,5ptp4l0-21swapper/107:56:291
134491410,5ptp4l0-21swapper/012:15:110
134491410,5ptp4l0-21swapper/008:58:540
134491410,4ptp4l8151-21users08:20:280
134491410,4ptp4l7600-21ntp_states08:20:231
134491410,4ptp4l26361-21memory12:30:213
134491410,4ptp4l25571-21diskstats11:20:141
134491410,4ptp4l20616-21hddtemp_smartct07:40:160
134491410,4ptp4l18194-21df08:45:131
134491410,4ptp4l1294-21ls10:25:271
134491410,4ptp4l0-21swapper/111:56:591
134491410,4ptp4l0-21swapper/012:28:490
134491410,4ptp4l0-21swapper/008:30:230
134491410,4ptp4l0-21swapper/008:29:100
134491410,4ptp4l0-21swapper/007:33:080
134491410,3ptp4l8599-21apt-get07:15:120
134491410,3ptp4l7419-21ntp_states07:10:223
134491410,3ptp4l5890-21ls09:25:271
134491410,3ptp4l18933-21ntp_states07:35:230
134491410,3ptp4l13854-21apt-get12:05:103
134491410,3ptp4l0-21swapper/110:51:551
134491410,2ptp4l25412-21apt-get12:30:131
6276994035,3cyclictest41-21ksoftirqd/308:59:593
6275994033,4cyclictest33-21ksoftirqd/210:25:122
134491400,6ptp4l0-21swapper/107:15:161
134491400,5ptp4l32258-21apt-config11:35:001
134491400,5ptp4l29501-21cron09:10:003
134491400,5ptp4l23313-21df_inode10:05:140
134491400,5ptp4l0-21swapper/108:55:111
134491400,5ptp4l0-21swapper/012:00:130
134491400,5ptp4l0-21swapper/009:20:160
134491400,4ptp4l32635-21/usr/sbin/munin08:05:200
134491400,4ptp4l23105-21/usr/sbin/munin12:25:153
134491400,4ptp4l10093-21memory09:35:220
134491400,4ptp4l0-21swapper/309:30:023
134491400,4ptp4l0-21swapper/308:50:173
134491400,4ptp4l0-21swapper/112:20:161
134491400,4ptp4l0-21swapper/111:40:171
134491400,4ptp4l0-21swapper/111:05:151
134491400,4ptp4l0-21swapper/110:40:161
134491400,4ptp4l0-21swapper/012:38:550
134491400,4ptp4l0-21swapper/011:50:180
134491400,4ptp4l0-21swapper/011:45:180
134491400,4ptp4l0-21swapper/010:51:380
134491400,4ptp4l0-21swapper/010:30:260
134491400,4ptp4l0-21swapper/010:20:530
134491400,4ptp4l0-21swapper/010:13:270
134491400,4ptp4l0-21swapper/007:57:320
134491400,3ptp4l28725-21ls12:35:231
134491400,3ptp4l26726-21ls09:00:260
134491400,3ptp4l23443-21hddtemp_smartct10:05:151
134491400,3ptp4l2323-21llvmpipe-009:21:593
134491400,3ptp4l20715-21apt-get10:00:113
134491400,3ptp4l17816-21apt-get07:35:131
134491390,5ptp4l31859-21cat09:15:011
134491390,5ptp4l0-21swapper/311:20:113
134491390,4ptp4l25-21ksoftirqd/108:40:231
134491390,4ptp4l0-21swapper/312:20:263
134491390,4ptp4l0-21swapper/312:18:503
134491390,4ptp4l0-21swapper/312:02:163
134491390,4ptp4l0-21swapper/311:54:213
134491390,4ptp4l0-21swapper/311:54:213
134491390,4ptp4l0-21swapper/311:31:353
134491390,4ptp4l0-21swapper/310:35:253
134491390,4ptp4l0-21swapper/310:29:193
134491390,4ptp4l0-21swapper/309:35:193
134491390,4ptp4l0-21swapper/309:29:543
134491390,4ptp4l0-21swapper/309:10:233
134491390,4ptp4l0-21swapper/308:35:223
134491390,4ptp4l0-21swapper/307:52:003
134491390,4ptp4l0-21swapper/307:45:103
134491390,4ptp4l0-21swapper/209:05:252
134491390,4ptp4l0-21swapper/207:05:042
134491390,4ptp4l0-21swapper/111:30:241
134491390,4ptp4l0-21swapper/111:25:211
134491390,4ptp4l0-21swapper/110:18:501
134491390,4ptp4l0-21swapper/110:11:581
134491390,4ptp4l0-21swapper/109:15:241
134491390,4ptp4l0-21swapper/109:00:211
134491390,4ptp4l0-21swapper/107:48:141
134491390,4ptp4l0-21swapper/010:00:140
134491390,3ptp4l12711-21ps09:40:241
134491390,3ptp4l0-21swapper/108:15:371
134491380,4ptp4l0-21swapper/311:13:413
134491380,4ptp4l0-21swapper/311:00:453
134491380,4ptp4l0-21swapper/311:00:453
134491380,4ptp4l0-21swapper/310:49:343
134491380,4ptp4l0-21swapper/310:40:103
134491380,4ptp4l0-21swapper/310:32:483
134491380,4ptp4l0-21swapper/310:07:443
134491380,4ptp4l0-21swapper/309:55:153
134491380,4ptp4l0-21swapper/308:34:143
134491380,4ptp4l0-21swapper/308:15:253
134491380,4ptp4l0-21swapper/307:23:183
134491380,4ptp4l0-21swapper/111:10:171
134491380,3ptp4l3098-21sed08:10:263
134491370,4ptp4l13144-21seq09:40:303
134491370,4ptp4l0-21swapper/311:42:123
134491370,4ptp4l0-21swapper/309:02:083
134491370,4ptp4l0-21swapper/308:46:263
134491370,4ptp4l0-21swapper/307:39:183
134491370,4ptp4l0-21swapper/307:30:393
134491370,3ptp4l0-21swapper/312:13:573
134491370,3ptp4l0-21swapper/308:20:083
134491370,3ptp4l0-21swapper/308:05:583
134491370,3ptp4l0-21swapper/308:01:443
134491370,3ptp4l0-21swapper/307:25:183
134491370,3ptp4l0-21swapper/109:45:131
134491360,4ptp4l0-21swapper/307:17:083
134491360,3ptp4l0-21swapper/307:41:473
134491330,5ptp4l0-21swapper/307:05:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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