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2026-07-11 - 04:48
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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 Sat Jul 11, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1381321560,5sleep03147799cyclictest00:15:260
134491640,22ptp4l11205-21chrt00:10:200
134491620,4ptp4l0-21swapper/300:05:153
31479996129,7cyclictest33-21ksoftirqd/220:00:002
134491600,4ptp4l0-21swapper/320:55:273
31479995929,4cyclictest33-21ksoftirqd/222:45:002
31479995822,4cyclictest33-21ksoftirqd/219:22:162
134491580,3ptp4l0-21swapper/220:05:262
134491570,3ptp4l0-21swapper/221:45:142
31479995621,6cyclictest33-21ksoftirqd/222:45:232
134491560,17ptp4l18651-21irqrtprio19:50:183
42772550,2sleep1231rcuc/119:20:171
31479995530,2cyclictest33-21ksoftirqd/220:00:262
31479995524,5cyclictest33-21ksoftirqd/223:15:222
31479995523,4cyclictest33-21ksoftirqd/221:01:222
31479995522,6cyclictest33-21ksoftirqd/222:25:242
31479995522,3cyclictest33-21ksoftirqd/222:01:182
134491550,4ptp4l0-21swapper/020:15:180
31479995425,10cyclictest33-21ksoftirqd/200:21:552
31479995425,10cyclictest33-21ksoftirqd/200:21:552
31479995424,4cyclictest33-21ksoftirqd/221:38:062
31479995423,4cyclictest33-21ksoftirqd/219:32:082
31479995422,6cyclictest33-21ksoftirqd/220:45:222
31479995420,8cyclictest33-21ksoftirqd/223:35:162
31479995420,4cyclictest33-21ksoftirqd/223:34:452
31479995417,9cyclictest33-21ksoftirqd/222:05:232
134491540,3ptp4l0-21swapper/319:19:163
134491540,3ptp4l0-21swapper/300:17:063
31479995323,3cyclictest33-21ksoftirqd/219:25:012
31479995322,7cyclictest33-21ksoftirqd/223:50:222
134491530,4ptp4l0-21swapper/323:23:333
31479995225,6cyclictest33-21ksoftirqd/219:49:232
31479995223,3cyclictest33-21ksoftirqd/223:09:172
31479995219,3cyclictest33-21ksoftirqd/220:27:502
31479995213,11cyclictest33-21ksoftirqd/220:38:442
31479995213,11cyclictest33-21ksoftirqd/220:38:442
134491520,4ptp4l0-21swapper/323:18:393
134491520,4ptp4l0-21swapper/320:20:263
134491520,4ptp4l0-21swapper/020:56:410
134491520,3ptp4l0-21swapper/321:34:533
31479995137,4cyclictest33-21ksoftirqd/221:17:282
31479995123,3cyclictest33-21ksoftirqd/200:26:562
31479995119,3cyclictest33-21ksoftirqd/220:20:172
31479995117,11cyclictest33-21ksoftirqd/220:30:162
134491510,4ptp4l0-21swapper/323:32:213
134491510,4ptp4l0-21swapper/320:42:123
134491510,3ptp4l0-21swapper/319:47:323
31479995021,7cyclictest33-21ksoftirqd/220:12:162
31479995021,4cyclictest33-21ksoftirqd/220:40:252
31479995019,4cyclictest33-21ksoftirqd/222:50:222
31479995012,7cyclictest33-21ksoftirqd/223:58:192
134491500,4ptp4l0-21swapper/322:33:103
134491500,4ptp4l0-21swapper/322:28:143
134491500,4ptp4l0-21swapper/321:55:283
134491500,3ptp4l0-21swapper/320:50:263
134491500,3ptp4l0-21swapper/222:18:022
31479994922,9cyclictest33-21ksoftirqd/220:58:562
31479994919,8cyclictest33-21ksoftirqd/222:55:142
31479994918,4cyclictest33-21ksoftirqd/221:21:272
31479994915,5cyclictest33-21ksoftirqd/223:50:002
31479994914,4cyclictest33-21ksoftirqd/220:50:252
134491490,5ptp4l0-21swapper/019:05:200
134491490,4ptp4l0-21swapper/323:51:323
134491490,4ptp4l0-21swapper/322:13:033
134491490,4ptp4l0-21swapper/320:07:373
134491490,3ptp4l0-21swapper/322:20:293
31479994829,16cyclictest33-21ksoftirqd/221:45:002
31479994811,5cyclictest33-21ksoftirqd/219:20:002
134491480,4ptp4l0-21swapper/323:56:023
134491480,4ptp4l0-21swapper/323:46:093
134491480,4ptp4l0-21swapper/321:51:393
134491480,4ptp4l0-21swapper/320:25:033
134491480,4ptp4l0-21swapper/223:28:362
134491480,3ptp4l0-21swapper/323:41:103
134491480,2ptp4l0-21swapper/020:52:500
31479994718,7cyclictest33-21ksoftirqd/222:10:212
31479994715,6cyclictest33-21ksoftirqd/223:00:162
31479994715,4cyclictest33-21ksoftirqd/222:35:262
31479994713,5cyclictest33-21ksoftirqd/222:20:172
3147999471,2cyclictest121rcu_preempt21:05:262
134491470,4ptp4l0-21swapper/322:43:123
134491470,4ptp4l0-21swapper/321:29:563
31479994636,3cyclictest33-21ksoftirqd/200:19:592
3147999462,2cyclictest33-21ksoftirqd/219:14:592
31479994622,4cyclictest33-21ksoftirqd/223:14:472
134491460,9ptp4l0-21swapper/200:36:392
134491460,4ptp4l0-21swapper/319:34:343
134491460,4ptp4l0-21swapper/219:08:062
134491460,3ptp4l0-21swapper/320:30:163
134491460,3ptp4l0-21swapper/223:42:242
134491460,3ptp4l0-21swapper/122:07:181
134491460,3ptp4l0-21swapper/100:08:441
31479994539,3cyclictest33-21ksoftirqd/200:14:592
3147999452,2cyclictest121rcu_preempt21:25:482
31479994516,4cyclictest33-21ksoftirqd/222:32:182
134491450,4ptp4l12725-21ls20:45:260
134491450,4ptp4l0-21swapper/122:42:341
134491450,3ptp4l0-21swapper/319:40:543
134491450,3ptp4l0-21swapper/123:22:381
31479994416,5cyclictest33-21ksoftirqd/220:20:002
3147999441,2cyclictest121rcu_preempt21:10:102
3147999441,2cyclictest121rcu_preempt00:06:582
31479994411,5cyclictest33-21ksoftirqd/219:40:242
134491440,5ptp4l18189-21df_inode19:50:140
134491440,4ptp4l0-21swapper/319:35:463
134491440,3ptp4l0-21swapper/323:06:033
134491440,3ptp4l0-21swapper/320:10:193
134491440,11ptp4l0-21swapper/019:45:260
134491440,10ptp4l0-21swapper/322:35:323
134491440,10ptp4l0-21swapper/322:17:563
134491440,10ptp4l0-21swapper/321:03:143
134491440,10ptp4l0-21swapper/320:01:183
134491440,10ptp4l0-21swapper/023:53:130
3147999431,2cyclictest121rcu_preempt21:31:542
3147999431,2cyclictest121rcu_preempt19:37:122
134491430,4ptp4l9882-21meminfo21:50:182
134491430,4ptp4l7846-21irqstats22:55:190
134491430,4ptp4l0-21swapper/120:28:461
134491430,3ptp4l0-21swapper/223:22:232
31479994237,3cyclictest33-21ksoftirqd/200:00:132
31479994214,6cyclictest33-21ksoftirqd/200:30:282
134491420,5ptp4l0-21swapper/323:35:153
134491420,5ptp4l0-21swapper/120:05:191
134491420,4ptp4l6036-21meminfo00:00:193
134491420,4ptp4l16022-21apt-get23:15:030
134491420,4ptp4l0-21swapper/300:37:563
134491420,4ptp4l0-21swapper/123:05:181
134491420,4ptp4l0-21swapper/122:45:291
134491420,3ptp4l0-21swapper/321:42:383
134491420,3ptp4l0-21swapper/321:16:293
134491420,1ptp4l0-21swapper/323:10:063
134491420,1ptp4l0-21swapper/319:23:043
134491420,10ptp4l0-21swapper/321:07:523
134491420,10ptp4l0-21swapper/319:58:363
31477994117,4cyclictest18616-21grep00:25:280
134491410,6ptp4l20283-21sed22:15:000
134491410,5ptp4l5654-21iostat00:00:170
134491410,5ptp4l0-21swapper/021:30:260
134491410,5ptp4l0-21swapper/019:10:240
134491410,4ptp4l9-21ksoftirqd/022:00:270
134491410,4ptp4l9-21ksoftirqd/021:50:240
134491410,4ptp4l4255-21apt-get22:50:043
134491410,4ptp4l3072-21df_inode23:55:150
134491410,4ptp4l25530-21perl22:25:131
134491410,4ptp4l25368-21df21:15:140
134491410,4ptp4l13549-21apt-get22:00:123
134491410,4ptp4l0-21swapper/119:25:111
134491410,4ptp4l0-21swapper/022:06:590
134491410,3ptp4l14189-21memory19:40:190
31479994034,3cyclictest33-21ksoftirqd/219:50:122
31478994011,28cyclictest24271-21kworker/1:020:20:591
134491400,9ptp4l0-21swapper/321:10:503
134491400,5ptp4l12304-21sed20:45:213
134491400,5ptp4l0-21swapper/319:10:273
134491400,5ptp4l0-21swapper/119:06:581
134491400,5ptp4l0-21swapper/020:00:150
134491400,5ptp4l0-21swapper/019:32:000
134491400,4ptp4l28587-21ntp_states21:20:223
134491400,4ptp4l1703-21apt-get22:45:023
134491400,4ptp4l0-21swapper/323:25:193
134491400,4ptp4l0-21swapper/323:00:193
134491400,4ptp4l0-21swapper/300:30:163
134491400,4ptp4l0-21swapper/300:20:273
134491400,4ptp4l0-21swapper/300:20:263
134491400,4ptp4l0-21swapper/123:11:401
134491400,4ptp4l0-21swapper/121:15:011
134491400,4ptp4l0-21swapper/100:30:501
134491400,4ptp4l0-21swapper/023:45:210
134491400,4ptp4l0-21swapper/023:30:230
134491400,4ptp4l0-21swapper/023:07:510
134491400,4ptp4l0-21swapper/022:43:130
134491400,4ptp4l0-21swapper/022:35:100
134491400,4ptp4l0-21swapper/021:48:310
134491400,4ptp4l0-21swapper/021:20:240
134491400,4ptp4l0-21swapper/020:24:080
134491400,4ptp4l0-21swapper/020:11:220
134491400,4ptp4l0-21swapper/020:09:150
134491400,4ptp4l0-21swapper/019:29:290
134491400,4ptp4l0-21swapper/000:35:230
134491400,3ptp4l29956-21iostat_ios20:15:173
134491400,3ptp4l25680-21iostat_ios22:25:150
134491400,3ptp4l2323-21llvmpipe-021:36:593
134491400,3ptp4l0-21swapper/300:25:523
31478993914,22cyclictest21449-21missed_timers22:15:221
134491390,5ptp4l3147799cyclictest22:30:060
134491390,5ptp4l0-21swapper/022:49:540
134491390,5ptp4l0-21swapper/022:15:040
134491390,5ptp4l0-21swapper/021:02:420
134491390,4ptp4l7228-21ls19:25:203
134491390,4ptp4l0-21swapper/322:55:113
134491390,4ptp4l0-21swapper/319:07:303
134491390,4ptp4l0-21swapper/123:17:101
134491390,4ptp4l0-21swapper/123:00:121
134491390,4ptp4l0-21swapper/122:50:511
134491390,4ptp4l0-21swapper/121:30:401
134491390,4ptp4l0-21swapper/121:00:231
134491390,4ptp4l0-21swapper/120:42:451
134491390,4ptp4l0-21swapper/120:35:351
134491390,4ptp4l0-21swapper/120:35:351
134491390,4ptp4l0-21swapper/023:40:120
134491390,4ptp4l0-21swapper/023:25:590
134491390,4ptp4l0-21swapper/023:10:430
134491390,4ptp4l0-21swapper/022:51:060
134491390,4ptp4l0-21swapper/021:57:100
134491390,4ptp4l0-21swapper/021:37:100
134491390,4ptp4l0-21swapper/021:05:130
134491390,4ptp4l0-21swapper/020:40:130
134491390,4ptp4l0-21swapper/020:35:160
134491390,4ptp4l0-21swapper/020:35:160
134491390,4ptp4l0-21swapper/020:34:500
134491390,4ptp4l0-21swapper/020:25:100
134491390,4ptp4l0-21swapper/019:57:210
134491390,4ptp4l0-21swapper/019:35:220
134491390,4ptp4l0-21swapper/019:20:240
134491390,4ptp4l0-21swapper/019:15:430
134491390,4ptp4l0-21swapper/000:30:530
134491390,4ptp4l0-21swapper/000:20:030
134491390,4ptp4l0-21swapper/000:20:030
134491390,3ptp4l9890-21iostat23:00:190
134491390,3ptp4l18761-21iostat22:10:171
134491390,3ptp4l0-21swapper/021:41:380
31479993833,3cyclictest33-21ksoftirqd/221:56:092
134491380,5ptp4l18867-21taskset00:27:391
134491380,4ptp4l10384-21sed21:50:241
134491380,4ptp4l0-21swapper/321:45:103
134491380,4ptp4l0-21swapper/300:10:173
134491380,4ptp4l0-21swapper/123:57:541
134491380,4ptp4l0-21swapper/123:41:581
134491380,4ptp4l0-21swapper/123:32:431
134491380,4ptp4l0-21swapper/122:36:131
134491380,4ptp4l0-21swapper/121:57:561
134491380,4ptp4l0-21swapper/121:45:471
134491380,4ptp4l0-21swapper/121:41:391
134491380,4ptp4l0-21swapper/121:20:531
134491380,4ptp4l0-21swapper/120:32:341
134491380,4ptp4l0-21swapper/120:18:221
134491380,4ptp4l0-21swapper/120:10:211
134491380,4ptp4l0-21swapper/120:03:581
134491380,4ptp4l0-21swapper/119:51:021
134491380,4ptp4l0-21swapper/119:47:061
134491380,4ptp4l0-21swapper/100:38:001
134491380,4ptp4l0-21swapper/100:13:231
134491380,4ptp4l0-21swapper/100:00:071
134491380,4ptp4l0-21swapper/023:35:580
134491380,4ptp4l0-21swapper/021:10:120
134491380,4ptp4l0-21swapper/000:05:280
134491380,3ptp4l26103-21meminfo21:15:211
134491380,3ptp4l0-21swapper/322:05:013
134491380,3ptp4l0-21swapper/320:35:203
134491380,3ptp4l0-21swapper/320:35:193
134491380,3ptp4l0-21swapper/122:58:001
134491380,3ptp4l0-21swapper/122:32:121
134491380,3ptp4l0-21swapper/100:16:421
134491380,3ptp4l0-21swapper/022:20:170
134491370,4ptp4l0-21swapper/123:46:301
134491370,4ptp4l0-21swapper/122:00:281
134491370,4ptp4l0-21swapper/121:38:481
134491370,4ptp4l0-21swapper/120:46:091
134491370,4ptp4l0-21swapper/119:40:111
134491370,4ptp4l0-21swapper/119:19:271
134491370,4ptp4l0-21swapper/023:20:370
134491370,4ptp4l0-21swapper/021:29:360
134491370,3ptp4l0-21swapper/123:53:131
134491370,3ptp4l0-21swapper/123:39:411
134491370,3ptp4l0-21swapper/122:24:261
134491370,3ptp4l0-21swapper/121:27:321
134491370,3ptp4l0-21swapper/121:06:041
134491370,3ptp4l0-21swapper/120:56:211
134491370,3ptp4l0-21swapper/120:52:511
134491370,3ptp4l0-21swapper/119:57:081
134491370,3ptp4l0-21swapper/119:36:191
134491360,3ptp4l0-21swapper/123:26:091
134491360,2ptp4l0-21swapper/119:30:041
134491350,3ptp4l0-21swapper/100:20:341
134491350,3ptp4l0-21swapper/100:20:331
134491340,3ptp4l0-21swapper/119:11:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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