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2025-12-15 - 18:31
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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 Dec 15, 2025 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1585621340,7sleep31478199cyclictest07:10:383
1585621340,7sleep31478199cyclictest07:10:383
134491660,4ptp4l24556-21df_inode08:40:351
134491650,4ptp4l9517-21mailstats09:15:452
266162630,3sleep31478199cyclictest11:00:483
134491630,4ptp4l0-21swapper/111:17:371
10592630,6sleep11477999cyclictest12:25:461
14781996128,7cyclictest41-21ksoftirqd/310:19:463
14781996025,4cyclictest41-21ksoftirqd/312:17:083
1444126052,4sleep00-21swapper/007:09:270
14781995827,4cyclictest41-21ksoftirqd/310:24:073
14781995823,4cyclictest41-21ksoftirqd/308:14:553
134491580,4ptp4l0-21swapper/010:00:520
14781995728,6cyclictest41-21ksoftirqd/307:25:003
14781995725,4cyclictest41-21ksoftirqd/308:39:503
14781995722,4cyclictest41-21ksoftirqd/312:24:343
14781995720,4cyclictest41-21ksoftirqd/309:30:013
134491570,6ptp4l0-21swapper/107:05:051
134491570,4ptp4l0-21swapper/009:40:470
134491570,3ptp4l0-21swapper/111:10:491
134491570,3ptp4l0-21swapper/007:40:380
14781995626,3cyclictest41-21ksoftirqd/312:07:013
14781995625,4cyclictest41-21ksoftirqd/312:28:563
134491560,5ptp4l0-21swapper/012:20:060
134491560,4ptp4l0-21swapper/311:39:293
134491560,3ptp4l0-21swapper/209:52:242
14781995524,8cyclictest41-21ksoftirqd/308:47:183
14781995524,7cyclictest41-21ksoftirqd/309:45:423
14781995522,7cyclictest41-21ksoftirqd/309:57:443
14781995522,4cyclictest41-21ksoftirqd/312:35:493
14781995521,4cyclictest41-21ksoftirqd/310:55:003
134491550,4ptp4l0-21swapper/312:10:383
134491550,3ptp4l0-21swapper/112:20:461
134491550,3ptp4l0-21swapper/108:25:501
134491550,3ptp4l0-21swapper/010:35:230
14781995425,4cyclictest41-21ksoftirqd/311:13:263
14781995424,4cyclictest41-21ksoftirqd/309:32:383
134491540,5ptp4l0-21swapper/307:08:043
134491540,4ptp4l1699-21seq09:00:382
134491540,3ptp4l0-21swapper/209:56:182
14781995326,7cyclictest41-21ksoftirqd/312:05:003
14781995324,3cyclictest41-21ksoftirqd/309:09:403
14781995323,4cyclictest41-21ksoftirqd/311:50:363
14781995323,4cyclictest41-21ksoftirqd/309:21:553
14781995321,4cyclictest41-21ksoftirqd/311:33:083
14781995321,4cyclictest41-21ksoftirqd/308:15:363
134491530,4ptp4l0-21swapper/112:08:041
134491530,3ptp4l0-21swapper/307:25:403
134491530,3ptp4l0-21swapper/307:15:453
14781995222,4cyclictest41-21ksoftirqd/307:30:473
14781995222,3cyclictest41-21ksoftirqd/309:35:553
14781995214,8cyclictest41-21ksoftirqd/308:57:263
134491520,4ptp4l0-21swapper/307:35:283
134491520,2ptp4l0-21swapper/009:34:090
14781995121,3cyclictest41-21ksoftirqd/308:20:363
14781995110,8cyclictest41-21ksoftirqd/307:41:243
134491510,4ptp4l0-21swapper/211:02:262
134491510,4ptp4l0-21swapper/209:38:182
134491510,4ptp4l0-21swapper/209:29:012
134491510,4ptp4l0-21swapper/208:59:262
134491510,4ptp4l0-21swapper/208:14:572
134491510,4ptp4l0-21swapper/207:57:232
134491510,3ptp4l10036-21sshd08:09:181
134491510,3ptp4l0-21swapper/012:10:440
14781995015,7cyclictest41-21ksoftirqd/310:35:363
134491500,9ptp4l0-21swapper/111:56:011
134491500,4ptp4l0-21swapper/212:21:252
134491500,4ptp4l0-21swapper/212:01:182
134491500,4ptp4l0-21swapper/210:49:572
134491500,4ptp4l0-21swapper/210:36:062
134491500,4ptp4l0-21swapper/209:13:492
134491500,4ptp4l0-21swapper/208:36:162
134491500,4ptp4l0-21swapper/207:14:332
134491500,4ptp4l0-21swapper/207:14:332
134491500,4ptp4l0-21swapper/110:55:591
134491500,4ptp4l0-21swapper/107:24:571
134491500,3ptp4l0-21swapper/112:18:381
134491500,11ptp4l0-21swapper/207:35:382
14781994922,7cyclictest41-21ksoftirqd/307:50:423
14781994920,7cyclictest41-21ksoftirqd/309:40:343
14781994912,8cyclictest41-21ksoftirqd/309:10:173
134491490,5ptp4l33-21ksoftirqd/208:50:502
134491490,4ptp4l0-21swapper/211:20:562
134491490,4ptp4l0-21swapper/211:09:462
134491490,4ptp4l0-21swapper/209:47:292
134491490,4ptp4l0-21swapper/208:47:102
134491490,4ptp4l0-21swapper/109:58:371
134491490,4ptp4l0-21swapper/010:20:180
134491490,3ptp4l0-21swapper/210:12:262
134491490,3ptp4l0-21swapper/208:20:522
134491490,3ptp4l0-21swapper/108:10:381
134491490,19ptp4l9-21ksoftirqd/009:53:490
14781994834,7cyclictest41-21ksoftirqd/311:18:173
14781994817,6cyclictest41-21ksoftirqd/310:25:393
134491480,4ptp4l0-21swapper/310:03:533
134491480,4ptp4l0-21swapper/207:48:282
134491480,4ptp4l0-21swapper/112:00:081
134491480,3ptp4l0-21swapper/310:44:273
134491480,3ptp4l0-21swapper/111:29:551
134491480,3ptp4l0-21swapper/108:35:051
14781994730,7cyclictest41-21ksoftirqd/308:00:463
134491470,4ptp4l0-21swapper/211:13:522
134491470,4ptp4l0-21swapper/207:07:592
134491470,4ptp4l0-21swapper/110:17:341
134491470,4ptp4l0-21swapper/012:05:230
134491470,4ptp4l0-21swapper/011:03:460
134491470,3ptp4l0-21swapper/211:33:582
134491470,3ptp4l0-21swapper/211:27:402
134491470,3ptp4l0-21swapper/111:22:481
1478199462,4cyclictest0-21swapper/310:47:123
14781994617,4cyclictest41-21ksoftirqd/309:50:413
1478199461,3cyclictest121rcu_preempt11:20:183
14781994611,7cyclictest41-21ksoftirqd/309:15:473
134491460,5ptp4l0-21swapper/210:00:042
134491460,4ptp4l0-21swapper/310:08:333
134491460,4ptp4l0-21swapper/210:59:522
134491460,4ptp4l0-21swapper/111:31:241
134491460,4ptp4l0-21swapper/010:47:090
134491460,3ptp4l0-21swapper/008:51:020
134491460,13ptp4l9-21ksoftirqd/010:05:590
134491460,12ptp4l25591-21proc_pri09:50:431
14781994520,6cyclictest41-21ksoftirqd/311:30:003
14781994518,8cyclictest41-21ksoftirqd/310:10:353
1478199451,2cyclictest121rcu_preempt11:40:323
14781994510,7cyclictest41-21ksoftirqd/311:10:013
134491450,4ptp4l0-21swapper/107:53:341
134491450,3ptp4l1477899cyclictest11:58:460
134491450,3ptp4l0-21swapper/208:27:322
134491450,3ptp4l0-21swapper/111:49:021
1478199446,8cyclictest41-21ksoftirqd/311:48:593
1478199445,6cyclictest41-21ksoftirqd/310:55:363
14781994413,8cyclictest41-21ksoftirqd/307:45:463
1478199440,2cyclictest121rcu_preempt08:26:173
134491440,9ptp4l0-21swapper/207:42:342
134491440,5ptp4l0-21swapper/209:05:412
134491440,3ptp4l0-21swapper/111:52:071
134491440,3ptp4l0-21swapper/012:18:050
134491440,3ptp4l0-21swapper/010:15:540
134491440,10ptp4l0-21swapper/212:18:432
46198430,4rtkit-daemon0-21swapper/210:51:042
1478199434,6cyclictest121rcu_preempt08:40:103
14781994327,8cyclictest41-21ksoftirqd/311:56:303
14781994326,8cyclictest41-21ksoftirqd/307:55:173
14781994315,6cyclictest41-21ksoftirqd/308:50:353
14781994312,7cyclictest41-21ksoftirqd/309:05:003
134491430,9ptp4l0-21swapper/210:05:392
134491430,9ptp4l0-21swapper/208:41:502
134491430,9ptp4l0-21swapper/011:29:240
134491430,8ptp4l0-21swapper/210:19:502
134491430,7ptp4l0-21swapper/010:31:470
134491430,4ptp4l25370-21apt-get12:10:341
134491430,3ptp4l0-21swapper/108:49:561
1478199426,7cyclictest41-21ksoftirqd/312:32:083
14781994237,3cyclictest41-21ksoftirqd/310:30:423
14781994211,7cyclictest41-21ksoftirqd/308:30:463
134491420,9ptp4l0-21swapper/212:25:092
134491420,9ptp4l0-21swapper/208:08:202
134491420,9ptp4l0-21swapper/207:21:182
134491420,7ptp4l0-21swapper/009:39:020
134491420,5ptp4l3184-21memory12:30:441
134491420,5ptp4l0-21swapper/012:00:350
134491420,4ptp4l2124-21irqstats09:00:411
134491420,4ptp4l15134-21apt-get09:30:341
134491420,4ptp4l12247-21meminfo11:40:420
134491420,3ptp4l2141-21ls07:50:410
14781994110,8cyclictest41-21ksoftirqd/308:05:383
134491410,8ptp4l9-21ksoftirqd/010:54:420
134491410,8ptp4l0-21swapper/210:22:582
134491410,6ptp4l0-21swapper/110:00:411
134491410,5ptp4l7501-21/usr/sbin/munin10:20:411
134491410,5ptp4l0-21swapper/112:35:421
134491410,5ptp4l0-21swapper/109:28:401
134491410,5ptp4l0-21swapper/012:30:360
134491410,5ptp4l0-21swapper/008:40:340
134491410,4ptp4l8570-21apt-get10:25:040
134491410,4ptp4l4588-21ntp_states07:55:440
134491410,4ptp4l30395-21iostat11:10:390
134491410,4ptp4l2674-21memory10:10:421
134491410,4ptp4l1975-21df_inode10:10:370
134491410,4ptp4l0-21swapper/207:50:322
134491410,4ptp4l0-21swapper/009:25:120
134491410,3ptp4l31356-21apt-get08:55:330
134491410,3ptp4l28715-21apt-get07:40:331
14780994028,10cyclictest33-21ksoftirqd/209:20:352
134491400,5ptp4l0-21swapper/009:55:410
134491400,4ptp4l7261-21python09:10:460
134491400,4ptp4l28104-21iostat_ios11:05:391
134491400,4ptp4l26440-21netstat12:10:432
134491400,4ptp4l16120-21ntp_states08:20:441
134491400,4ptp4l0-21swapper/211:44:052
134491400,4ptp4l0-21swapper/012:25:430
134491400,4ptp4l0-21swapper/011:30:420
134491400,4ptp4l0-21swapper/009:22:230
134491400,4ptp4l0-21swapper/009:09:010
134491400,4ptp4l0-21swapper/008:30:330
134491400,3ptp4l9204-21ntp_states08:05:450
134491400,3ptp4l8983-21apt-get11:35:342
134491400,3ptp4l7457-21/usr/sbin/munin08:00:490
134491400,3ptp4l3467-21apt-get07:55:331
134491400,3ptp4l21132-21iostat10:50:411
134491400,3ptp4l19691-21ls10:45:481
134491390,5ptp4l13475-21irqrtprio08:15:390
134491390,5ptp4l0-21swapper/109:45:361
134491390,5ptp4l0-21swapper/011:35:500
134491390,5ptp4l0-21swapper/008:25:370
134491390,4ptp4l4954-21hddtemp_smartct12:35:390
134491390,4ptp4l26654-21/usr/sbin/munin11:00:481
134491390,4ptp4l19101-21/usr/sbin/munin09:35:511
134491390,4ptp4l15977-21dpkg10:40:342
134491390,4ptp4l1477899cyclictest09:00:430
134491390,4ptp4l0-21swapper/212:35:342
134491390,4ptp4l0-21swapper/211:46:502
134491390,4ptp4l0-21swapper/210:30:222
134491390,4ptp4l0-21swapper/208:30:432
134491390,4ptp4l0-21swapper/208:15:412
134491390,4ptp4l0-21swapper/207:28:182
134491390,4ptp4l0-21swapper/110:29:211
134491390,4ptp4l0-21swapper/109:15:381
134491390,4ptp4l0-21swapper/107:35:361
134491390,4ptp4l0-21swapper/011:45:480
134491390,4ptp4l0-21swapper/011:20:460
134491390,4ptp4l0-21swapper/010:40:070
134491390,4ptp4l0-21swapper/009:45:400
134491390,4ptp4l0-21swapper/008:10:310
134491390,4ptp4l0-21swapper/007:31:410
134491390,4ptp4l0-21swapper/007:25:060
134491390,4ptp4l0-21swapper/007:20:340
134491390,4ptp4l0-21swapper/007:15:340
134491390,3ptp4l32197-21irqstats08:55:401
134491390,3ptp4l18480-21/usr/sbin/munin07:15:462
134491390,3ptp4l17013-21ntp_states11:50:450
134491380,8ptp4l0-21swapper/211:56:512
134491380,5ptp4l0-21swapper/108:30:381
134491380,5ptp4l0-21swapper/108:00:381
134491380,5ptp4l0-21swapper/107:45:331
134491380,4ptp4l0-21swapper/211:15:282
134491380,4ptp4l0-21swapper/210:26:442
134491380,4ptp4l0-21swapper/208:03:102
134491380,4ptp4l0-21swapper/207:31:082
134491380,4ptp4l0-21swapper/110:30:421
134491380,4ptp4l0-21swapper/110:05:291
134491380,4ptp4l0-21swapper/108:17:271
134491380,4ptp4l0-21swapper/107:29:051
134491380,4ptp4l0-21swapper/107:15:241
134491380,4ptp4l0-21swapper/107:10:441
134491380,4ptp4l0-21swapper/107:10:441
134491380,4ptp4l0-21swapper/011:08:310
134491380,4ptp4l0-21swapper/010:55:350
134491380,4ptp4l0-21swapper/008:38:310
134491380,4ptp4l0-21swapper/008:20:080
134491380,4ptp4l0-21swapper/007:45:320
134491380,4ptp4l0-21swapper/007:35:110
134491380,4ptp4l0-21swapper/007:14:160
134491380,4ptp4l0-21swapper/007:14:150
134491380,3ptp4l634-21meminfo11:15:420
134491380,3ptp4l29577-21if_enp4s008:50:371
134491380,3ptp4l11081-21/usr/sbin/munin09:20:381
134491380,3ptp4l0-21swapper/212:30:552
134491380,3ptp4l0-21swapper/209:40:352
134491380,3ptp4l0-21swapper/209:33:452
134491380,3ptp4l0-21swapper/008:45:010
134491380,2ptp4l16935-21strings11:50:442
134491370,4ptp4l0-21swapper/110:40:401
134491370,4ptp4l0-21swapper/109:40:451
134491370,4ptp4l0-21swapper/109:05:211
134491370,4ptp4l0-21swapper/107:30:491
134491370,4ptp4l0-21swapper/009:15:390
134491370,3ptp4l0-21swapper/212:05:142
134491370,3ptp4l0-21swapper/111:40:331
134491370,3ptp4l0-21swapper/111:38:391
134491370,3ptp4l0-21swapper/110:36:281
134491360,3ptp4l0-21swapper/109:10:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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