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2026-08-10 - 05:10
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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 Mon Aug 10, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1413221450,6sleep2900299cyclictest22:47:332
900299822,78cyclictest0-21swapper/220:35:292
900299812,77cyclictest0-21swapper/223:50:292
900299781,2cyclictest0-21swapper/219:45:492
900299691,4cyclictest855-21meminfo20:00:292
112072680,3sleep341-21ksoftirqd/320:20:273
134491620,4ptp4l0-21swapper/020:50:190
89042610,5sleep10-21swapper/119:10:021
900299602,56cyclictest0-21swapper/221:55:292
134491600,4ptp4l20857-21users23:00:280
134491600,4ptp4l0-21swapper/122:20:171
134491590,4ptp4l27810-21users23:15:281
134491580,4ptp4l0-21swapper/119:23:451
134491580,3ptp4l0-21swapper/120:12:501
134491580,3ptp4l0-21swapper/120:12:501
134491580,3ptp4l0-21swapper/022:56:190
134491580,3ptp4l0-21swapper/022:56:180
134491570,4ptp4l0-21swapper/100:31:191
134491570,3ptp4l0-21swapper/300:00:133
161322560,7sleep1241ktimersoftd/119:25:131
161322560,7sleep1241ktimersoftd/119:25:131
134491560,4ptp4l0-21swapper/021:00:250
134491560,3ptp4l0-21swapper/120:50:241
900299551,52cyclictest0-21swapper/221:05:292
265102550,5sleep30-21swapper/300:20:263
134491550,4ptp4l0-21swapper/100:17:001
134491540,3ptp4l0-21swapper/121:11:591
134491540,3ptp4l0-21swapper/020:35:290
134491530,4ptp4l0-21swapper/319:45:163
134491530,4ptp4l0-21swapper/300:25:223
134491530,4ptp4l0-21swapper/122:14:221
134491530,4ptp4l0-21swapper/121:29:211
134491530,4ptp4l0-21swapper/019:15:240
134491530,3ptp4l0-21swapper/219:53:142
134491530,3ptp4l0-21swapper/120:33:431
9001995121,3cyclictest25-21ksoftirqd/121:55:201
134491510,4ptp4l0-21swapper/319:42:583
134491510,4ptp4l0-21swapper/319:31:583
134491510,4ptp4l0-21swapper/219:39:042
134491510,4ptp4l0-21swapper/021:44:590
134491510,4ptp4l0-21swapper/020:15:320
134491510,4ptp4l0-21swapper/019:50:330
134491510,4ptp4l0-21swapper/000:33:020
134491510,3ptp4l30785-21df22:15:130
9001995021,4cyclictest25-21ksoftirqd/122:10:001
134491500,5ptp4l0-21swapper/019:05:170
134491500,4ptp4l0-21swapper/120:57:501
134491500,3ptp4l0-21swapper/020:20:200
9001994920,8cyclictest25-21ksoftirqd/120:35:281
9001994917,4cyclictest25-21ksoftirqd/123:20:211
9001994916,9cyclictest25-21ksoftirqd/122:30:261
134491490,4ptp4l0-21swapper/119:55:321
134491490,4ptp4l0-21swapper/022:51:540
134491490,4ptp4l0-21swapper/019:44:150
9002994817,28cyclictest2704-21ls23:30:292
900299481,45cyclictest0-21swapper/200:00:392
134491480,4ptp4l0-21swapper/119:54:201
134491480,4ptp4l0-21swapper/100:27:311
134491480,3ptp4l3965-21netstat21:15:242
134491480,3ptp4l3965-21netstat21:15:232
134491480,3ptp4l0-21swapper/221:01:372
134491480,3ptp4l0-21swapper/123:10:041
134491480,3ptp4l0-21swapper/122:42:431
134491480,3ptp4l0-21swapper/122:00:401
900399471,5cyclictest121rcu_preempt21:12:073
9002994714,31cyclictest24496-21kworker/2:023:15:282
9001994728,8cyclictest25-21ksoftirqd/122:27:101
9001994719,9cyclictest25-21ksoftirqd/123:27:461
9001994719,9cyclictest25-21ksoftirqd/123:27:461
9001994717,7cyclictest25-21ksoftirqd/123:07:531
134491470,4ptp4l0-21swapper/020:27:220
134491470,4ptp4l0-21swapper/020:00:570
134491470,3ptp4l0-21swapper/321:35:483
134491470,3ptp4l0-21swapper/023:42:070
134491470,3ptp4l0-21swapper/019:48:000
900399460,3cyclictest121rcu_preempt21:57:593
900299463,42cyclictest0-21swapper/219:21:592
900199463,7cyclictest25-21ksoftirqd/123:53:351
9001994617,4cyclictest25-21ksoftirqd/119:18:461
9001994617,4cyclictest25-21ksoftirqd/100:00:011
9001994614,8cyclictest25-21ksoftirqd/119:35:191
134491460,6ptp4l0-21swapper/319:09:133
134491460,4ptp4l15947-21apt-get19:25:122
134491460,4ptp4l15947-21apt-get19:25:122
134491460,4ptp4l0-21swapper/020:08:510
134491460,3ptp4l0-21swapper/123:36:251
134491460,3ptp4l0-21swapper/122:46:391
134491460,3ptp4l0-21swapper/121:22:161
134491460,3ptp4l0-21swapper/119:44:571
134491460,2ptp4l0-21swapper/120:40:461
900399451,3cyclictest121rcu_preempt20:42:173
9003994510,5cyclictest41-21ksoftirqd/300:05:443
900199459,8cyclictest25-21ksoftirqd/121:15:261
900199459,8cyclictest25-21ksoftirqd/121:15:261
9001994514,3cyclictest25-21ksoftirqd/100:10:201
9001994513,4cyclictest25-21ksoftirqd/122:53:411
134491450,5ptp4l6710-21ls22:30:260
134491450,4ptp4l0-21swapper/119:46:471
134491450,4ptp4l0-21swapper/022:03:300
134491450,4ptp4l0-21swapper/021:38:420
134491450,4ptp4l0-21swapper/019:23:180
134491450,3ptp4l0-21swapper/123:46:031
134491450,3ptp4l0-21swapper/122:59:251
134491450,3ptp4l0-21swapper/122:59:251
134491450,12ptp4l20292-21latency_hist19:35:001
134491450,11ptp4l0-21swapper/222:15:152
900399444,3cyclictest41-21ksoftirqd/320:40:003
900399440,3cyclictest121rcu_preempt21:49:003
900199443,2cyclictest121rcu_preempt21:30:281
9001994430,6cyclictest25-21ksoftirqd/123:59:591
9001994430,6cyclictest25-21ksoftirqd/100:00:001
9001994428,3cyclictest25-21ksoftirqd/120:30:011
9001994414,6cyclictest25-21ksoftirqd/120:46:561
9001994411,4cyclictest25-21ksoftirqd/120:05:211
9001994410,3cyclictest25-21ksoftirqd/121:35:221
134491440,9ptp4l0-21swapper/223:13:372
134491440,6ptp4l8746-21ls19:10:012
134491440,5ptp4l0-21swapper/320:55:293
134491440,5ptp4l0-21swapper/319:25:123
134491440,5ptp4l0-21swapper/319:25:123
134491440,4ptp4l16721-21apt-get21:45:141
134491440,3ptp4l0-21swapper/120:23:441
134491440,3ptp4l0-21swapper/023:27:460
134491440,3ptp4l0-21swapper/023:27:460
134491440,3ptp4l0-21swapper/023:09:470
134491440,11ptp4l0-21swapper/200:20:512
900399435,6cyclictest121rcu_preempt20:04:103
9003994337,3cyclictest41-21ksoftirqd/322:15:253
900399431,2cyclictest121rcu_preempt23:40:043
900399430,3cyclictest121rcu_preempt00:12:553
900199439,4cyclictest25-21ksoftirqd/119:10:151
134491430,9ptp4l0-21swapper/221:44:032
134491430,4ptp4l0-21swapper/219:30:122
134491430,4ptp4l0-21swapper/120:19:431
134491430,4ptp4l0-21swapper/023:17:090
134491430,3ptp4l0-21swapper/123:34:501
9003994237,3cyclictest41-21ksoftirqd/321:05:003
900399420,6cyclictest121rcu_preempt22:00:263
900399420,3cyclictest121rcu_preempt22:13:273
900299423,38cyclictest0-21swapper/222:35:182
46198420,11rtkit-daemon0-21swapper/023:55:220
46198420,11rtkit-daemon0-21swapper/023:55:220
134491420,9ptp4l0-21swapper/220:14:502
134491420,9ptp4l0-21swapper/220:14:502
134491420,9ptp4l0-21swapper/121:42:331
134491420,8ptp4l0-21swapper/221:25:352
134491420,8ptp4l0-21swapper/220:59:532
134491420,5ptp4l28766-21diskstats23:20:150
134491420,5ptp4l0-21swapper/319:35:023
134491420,5ptp4l0-21swapper/222:03:332
134491420,5ptp4l0-21swapper/022:25:210
134491420,5ptp4l0-21swapper/020:55:260
134491420,4ptp4l19015-21apt-get21:50:130
134491420,4ptp4l0-21swapper/021:17:130
134491420,4ptp4l0-21swapper/021:17:120
134491420,3ptp4l0-21swapper/219:12:342
134491420,3ptp4l0-21swapper/019:25:480
134491420,3ptp4l0-21swapper/019:25:480
9003994136,3cyclictest41-21ksoftirqd/322:40:013
900399411,2cyclictest121rcu_preempt23:31:223
9003994111,5cyclictest41-21ksoftirqd/322:08:543
900399410,2cyclictest121rcu_preempt21:25:333
9002994135,4cyclictest33-21ksoftirqd/221:21:122
900199419,13cyclictest25-21ksoftirqd/123:40:261
9001994136,3cyclictest25-21ksoftirqd/100:40:011
9001994136,3cyclictest25-21ksoftirqd/100:40:011
9001994135,4cyclictest25-21ksoftirqd/122:20:001
134491410,9ptp4l0-21swapper/223:43:592
134491410,8ptp4l0-21swapper/219:41:442
134491410,5ptp4l25317-21diskstats00:20:130
134491410,5ptp4l0-21swapper/323:25:223
134491410,5ptp4l0-21swapper/323:25:223
134491410,5ptp4l0-21swapper/200:35:252
134491410,5ptp4l0-21swapper/200:35:252
134491410,5ptp4l0-21swapper/021:55:130
134491410,4ptp4l32695-21iostat_ios00:35:213
134491410,4ptp4l32695-21iostat_ios00:35:213
134491410,4ptp4l14574-21apt-get22:50:112
134491410,4ptp4l0-21swapper/222:58:042
134491410,4ptp4l0-21swapper/222:58:042
134491410,4ptp4l0-21swapper/219:59:412
134491410,4ptp4l0-21swapper/200:06:372
134491410,4ptp4l0-21swapper/022:40:230
134491410,3ptp4l18452-21df19:30:140
134491410,3ptp4l13070-21apt-get23:55:113
134491410,3ptp4l13070-21apt-get23:55:113
134491410,3ptp4l0-21swapper/000:10:150
134491410,2ptp4l0-21swapper/222:08:502
9003994035,3cyclictest41-21ksoftirqd/322:32:593
9003994034,3cyclictest41-21ksoftirqd/323:00:013
9003994034,3cyclictest41-21ksoftirqd/323:00:013
900399401,3cyclictest121rcu_preempt21:31:593
900399401,3cyclictest121rcu_preempt20:53:043
900199405,3cyclictest121rcu_preempt21:50:011
9001994012,7cyclictest25-21ksoftirqd/121:05:111
9001994011,3cyclictest25-21ksoftirqd/120:00:361
134491400,6ptp4l2785-21cat22:25:010
134491400,5ptp4l0-21swapper/320:25:203
134491400,5ptp4l0-21swapper/319:20:293
134491400,5ptp4l0-21swapper/319:15:273
134491400,5ptp4l0-21swapper/319:10:243
134491400,5ptp4l0-21swapper/223:56:332
134491400,5ptp4l0-21swapper/223:56:332
134491400,5ptp4l0-21swapper/200:30:232
134491400,5ptp4l0-21swapper/020:10:210
134491400,5ptp4l0-21swapper/020:10:210
134491400,5ptp4l0-21swapper/019:10:140
134491400,4ptp4l9427-21meminfo23:45:192
134491400,4ptp4l4834-21sed23:35:260
134491400,4ptp4l4005-21ntp_states21:15:253
134491400,4ptp4l4005-21ntp_states21:15:253
134491400,4ptp4l28408-21ntp_kernel_pll_00:25:250
134491400,4ptp4l25009-21apt-get00:20:111
134491400,4ptp4l0-21swapper/323:10:143
134491400,4ptp4l0-21swapper/321:40:223
134491400,4ptp4l0-21swapper/319:50:133
134491400,4ptp4l0-21swapper/300:16:593
134491400,4ptp4l0-21swapper/223:26:032
134491400,4ptp4l0-21swapper/223:26:032
134491400,4ptp4l0-21swapper/223:05:062
134491400,4ptp4l0-21swapper/223:01:082
134491400,4ptp4l0-21swapper/221:45:292
134491400,4ptp4l0-21swapper/220:52:202
134491400,4ptp4l0-21swapper/220:25:182
134491400,4ptp4l0-21swapper/220:17:202
134491400,4ptp4l0-21swapper/200:26:302
134491400,4ptp4l0-21swapper/121:04:461
134491400,4ptp4l0-21swapper/022:49:590
134491400,4ptp4l0-21swapper/022:35:590
134491400,4ptp4l0-21swapper/022:10:130
134491400,4ptp4l0-21swapper/021:33:590
134491400,4ptp4l0-21swapper/021:07:030
134491400,4ptp4l0-21swapper/019:55:230
134491400,4ptp4l0-21swapper/000:16:540
134491400,4ptp4l0-21swapper/000:05:310
134491400,3ptp4l12102-21apt-get21:35:112
134491400,3ptp4l0-21swapper/023:46:120
134491400,3ptp4l0-21swapper/021:21:570
9003993934,3cyclictest41-21ksoftirqd/320:15:003
9003993934,3cyclictest41-21ksoftirqd/320:15:003
900399390,3cyclictest121rcu_preempt20:16:213
900399390,2cyclictest121rcu_preempt23:48:393
134491390,5ptp4l0-21swapper/320:30:113
134491390,4ptp4l25578-21kworker/2:122:25:202
134491390,4ptp4l12117-21python23:50:260
134491390,4ptp4l0-21swapper/322:21:123
134491390,4ptp4l0-21swapper/319:58:133
134491390,4ptp4l0-21swapper/300:30:393
134491390,4ptp4l0-21swapper/223:23:072
134491390,4ptp4l0-21swapper/222:30:252
134491390,4ptp4l0-21swapper/222:24:192
134491390,4ptp4l0-21swapper/221:52:232
134491390,4ptp4l0-21swapper/221:30:452
134491390,4ptp4l0-21swapper/221:11:322
134491390,4ptp4l0-21swapper/220:46:002
134491390,4ptp4l0-21swapper/220:43:432
134491390,4ptp4l0-21swapper/220:30:212
134491390,4ptp4l0-21swapper/220:20:382
134491390,4ptp4l0-21swapper/220:07:222
134491390,4ptp4l0-21swapper/219:15:162
134491390,4ptp4l0-21swapper/200:15:172
134491390,4ptp4l0-21swapper/200:10:082
134491390,4ptp4l0-21swapper/123:00:191
134491390,4ptp4l0-21swapper/023:13:300
134491390,4ptp4l0-21swapper/021:45:180
134491390,4ptp4l0-21swapper/021:25:250
134491390,4ptp4l0-21swapper/021:10:240
134491390,4ptp4l0-21swapper/020:42:540
134491390,4ptp4l0-21swapper/020:30:150
134491390,4ptp4l0-21swapper/019:35:180
134491390,4ptp4l0-21swapper/000:35:310
134491390,4ptp4l0-21swapper/000:35:310
9003993833,3cyclictest41-21ksoftirqd/320:45:143
134491380,4ptp4l1005-21cp23:30:010
134491380,4ptp4l0-21swapper/323:52:363
134491380,4ptp4l0-21swapper/323:05:273
134491380,4ptp4l0-21swapper/321:20:143
134491380,4ptp4l0-21swapper/321:05:153
134491380,4ptp4l0-21swapper/223:35:552
134491380,4ptp4l0-21swapper/222:40:212
134491380,4ptp4l0-21swapper/222:10:032
134491380,4ptp4l0-21swapper/122:35:141
134491380,4ptp4l0-21swapper/100:05:391
134491380,4ptp4l0-21swapper/022:05:170
134491380,4ptp4l0-21swapper/000:00:170
134491380,3ptp4l15140-21iostat22:50:173
134491380,3ptp4l0-21swapper/323:02:153
134491380,2ptp4l21465-21/usr/sbin/munin20:45:130
9003993732,3cyclictest41-21ksoftirqd/321:50:243
9003993732,3cyclictest41-21ksoftirqd/320:05:143
134491370,4ptp4l0-21swapper/323:20:083
134491370,4ptp4l0-21swapper/322:48:063
134491370,3ptp4l0-21swapper/323:16:473
134491370,3ptp4l0-21swapper/322:27:453
134491360,4ptp4l0-21swapper/322:42:543
134491360,3ptp4l0-21swapper/323:39:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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