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2026-04-24 - 17:16
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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 highest latencies:
System rackdslot1.osadl.org (updated Fri Apr 24, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2657699740,36cyclictest29694-21seq11:54:501
2657699652,61cyclictest6068-21kworker/1:008:21:091
134491640,5ptp4l32129-21gpgv12:00:003
284592630,4sleep20-21swapper/208:20:262
2657699630,28cyclictest4231-21chrt12:06:391
2657699620,25cyclictest12480-21mailstats10:05:241
134491620,3ptp4l27367-21fschecks_time08:20:143
134491610,3ptp4l0-21swapper/309:43:113
134491610,15ptp4l7859-21ls09:55:250
2657699600,3cyclictest7214-21sed09:55:171
2657699600,29cyclictest865-21seq08:30:511
134491600,20ptp4l0-21swapper/311:15:253
2657699592,18cyclictest0-21swapper/109:35:271
2657699591,29cyclictest22102-21chrt08:09:491
134491590,4ptp4l0-21swapper/311:50:373
134491590,4ptp4l0-21swapper/010:00:250
2657699580,29cyclictest31866-21taskset11:58:161
2657699580,26cyclictest28406-21taskset07:11:591
134491580,4ptp4l0-21swapper/107:40:261
134491580,3ptp4l4594-21df11:00:130
2657699572,19cyclictest134691getstats10:40:521
2657699571,26cyclictest7980-21chrt08:47:201
134491570,4ptp4l0-21swapper/211:23:592
134491570,4ptp4l0-21swapper/209:29:152
134491570,4ptp4l0-21swapper/209:23:322
134491570,4ptp4l0-21swapper/112:15:151
134491570,3ptp4l0-21swapper/010:05:230
2657699561,2cyclictest17440-21users10:15:261
2657699561,2cyclictest137891phc2sys10:10:131
2657699560,2cyclictest18201-21if_enp1s009:10:161
2657699560,27cyclictest11043-21taskset11:14:321
134491560,4ptp4l0-21swapper/210:13:232
134491560,4ptp4l0-21swapper/208:31:102
134491560,4ptp4l0-21swapper/208:03:512
2657699550,29cyclictest26337-21seq09:25:511
2657699550,29cyclictest13645-21taskset12:28:071
2657699550,27cyclictest807-21seq07:24:391
134491550,4ptp4l0-21swapper/309:11:293
134491550,4ptp4l0-21swapper/208:46:112
134491550,3ptp4l0-21swapper/209:52:142
134491550,3ptp4l0-21swapper/208:19:102
134491550,3ptp4l0-21swapper/208:19:102
134491550,3ptp4l0-21swapper/107:05:081
2657699540,28cyclictest31407-21chrt10:46:581
134491540,4ptp4l0-21swapper/311:34:323
134491540,4ptp4l0-21swapper/311:34:323
134491540,4ptp4l0-21swapper/310:15:553
134491540,4ptp4l0-21swapper/211:48:372
134491540,4ptp4l0-21swapper/211:06:222
134491540,4ptp4l0-21swapper/207:55:272
134491540,4ptp4l0-21swapper/207:40:052
134491540,3ptp4l9302-21kernelversion08:50:162
134491540,2ptp4l3285-21ssh10:55:253
134491530,4ptp4l0-21swapper/212:05:022
134491530,4ptp4l0-21swapper/209:58:032
134491530,4ptp4l0-21swapper/207:51:272
26577995222,4cyclictest33-21ksoftirqd/210:38:382
2657699520,29cyclictest19945-21taskset10:22:361
134491520,4ptp4l0-21swapper/210:06:552
134491520,4ptp4l0-21swapper/208:12:022
134491520,4ptp4l0-21swapper/207:23:472
134491520,4ptp4l0-21swapper/010:17:200
134491520,3ptp4l0-21swapper/310:23:533
134491520,12ptp4l0-21swapper/012:20:230
134491520,11ptp4l0-21swapper/312:37:063
26577995117,3cyclictest33-21ksoftirqd/212:35:002
2657699510,26cyclictest10840-21chrt10:03:591
2657699510,26cyclictest10146-21runrttasks08:50:401
134491510,4ptp4l0-21swapper/311:02:423
134491510,4ptp4l0-21swapper/310:13:283
134491510,3ptp4l0-21swapper/309:53:363
26577995022,7cyclictest33-21ksoftirqd/211:11:072
2657699503,17cyclictest134491ptp4l11:04:591
2657699500,28cyclictest6775-21taskset12:14:511
2657699500,27cyclictest20372-21seq10:25:081
134491500,4ptp4l0-21swapper/308:08:483
134491500,4ptp4l0-21swapper/307:26:433
134491500,4ptp4l0-21swapper/012:07:510
134491500,3ptp4l0-21swapper/312:19:073
134491500,2ptp4l0-21swapper/311:09:033
26577994921,8cyclictest33-21ksoftirqd/211:28:492
26577994920,7cyclictest33-21ksoftirqd/211:20:002
2657699491,27cyclictest26804-21seq10:37:061
134491490,3ptp4l0-21swapper/312:28:093
134491490,3ptp4l0-21swapper/309:39:393
2657799482,4cyclictest0-21swapper/210:52:122
2657799482,4cyclictest0-21swapper/208:41:062
26577994820,4cyclictest33-21ksoftirqd/211:40:042
26577994819,4cyclictest33-21ksoftirqd/211:35:002
26577994819,4cyclictest33-21ksoftirqd/211:35:002
26577994816,6cyclictest33-21ksoftirqd/208:30:012
26577994816,3cyclictest33-21ksoftirqd/209:04:252
134491480,3ptp4l0-21swapper/110:54:221
134491480,2ptp4l121rcu_preempt10:45:143
2657799472,4cyclictest0-21swapper/209:34:412
2657799472,4cyclictest0-21swapper/209:15:362
26577994719,7cyclictest33-21ksoftirqd/210:31:282
26577994716,4cyclictest33-21ksoftirqd/208:39:372
26577994713,4cyclictest33-21ksoftirqd/211:00:012
2657699470,27cyclictest21777-21seq09:16:361
2657699470,27cyclictest19936-21taskset11:30:291
2657699470,27cyclictest19936-21taskset11:30:291
2657699470,26cyclictest12909-21runrttasks07:49:591
134491470,9ptp4l0-21swapper/309:08:043
134491470,4ptp4l0-21swapper/012:01:190
134491470,4ptp4l0-21swapper/011:57:000
134491470,4ptp4l0-21swapper/011:33:230
134491470,4ptp4l0-21swapper/011:33:230
134491470,3ptp4l0-21swapper/310:38:483
134491470,10ptp4l0-21swapper/310:44:443
26577994617,4cyclictest33-21ksoftirqd/211:53:452
26577994614,6cyclictest33-21ksoftirqd/209:37:102
26577994613,3cyclictest33-21ksoftirqd/210:47:002
26577994612,4cyclictest33-21ksoftirqd/209:10:182
26577994610,5cyclictest33-21ksoftirqd/212:00:112
2657699462,24cyclictest0-21swapper/107:58:051
2657699460,26cyclictest30914-21runrttasks07:19:341
134491460,4ptp4l0-21swapper/108:55:491
134491460,3ptp4l0-21swapper/211:58:292
134491460,3ptp4l0-21swapper/210:21:102
2657799452,4cyclictest0-21swapper/210:44:182
26577994514,5cyclictest33-21ksoftirqd/211:38:052
2657799451,2cyclictest121rcu_preempt09:48:592
26576994511,21cyclictest24385-21seq10:30:381
2657699450,25cyclictest14802-21runrttasks09:00:311
134491450,7ptp4l0-21swapper/111:18:581
134491450,5ptp4l29220-21apt-get09:35:130
134491450,5ptp4l0-21swapper/211:00:122
134491450,3ptp4l0-21swapper/310:54:523
134491450,3ptp4l0-21swapper/112:24:571
134491450,12ptp4l9-21ksoftirqd/011:16:050
2657799443,6cyclictest0-21swapper/207:33:112
26577994416,4cyclictest33-21ksoftirqd/208:06:482
26577994412,5cyclictest33-21ksoftirqd/212:36:302
26577994412,4cyclictest33-21ksoftirqd/207:39:302
2657699440,29cyclictest5398-21seq07:30:491
2657699440,28cyclictest24765-21chrt11:40:351
2657699440,27cyclictest134491ptp4l09:20:231
134491440,9ptp4l0-21swapper/010:26:370
134491440,4ptp4l3689-21apt-get07:30:130
134491440,4ptp4l0-21swapper/310:32:193
134491440,4ptp4l0-21swapper/212:14:052
26577994338,3cyclictest33-21ksoftirqd/207:10:212
26577994311,3cyclictest33-21ksoftirqd/207:30:022
2657699432,25cyclictest0-21swapper/112:35:381
2657699431,28cyclictest5579-21chrt08:40:591
2657699430,29cyclictest5975-21chrt09:54:121
2657699430,26cyclictest15750-21seq12:30:371
134491430,9ptp4l0-21swapper/009:28:340
134491430,9ptp4l0-21swapper/007:21:460
134491430,5ptp4l4259-21iostat_ios07:30:183
134491430,5ptp4l0-21swapper/309:45:213
134491430,5ptp4l0-21swapper/307:55:113
134491430,4ptp4l7103-21meminfo08:45:203
134491430,4ptp4l20389-21apt-get10:25:113
134491430,4ptp4l1970-21irqstats07:25:190
134491430,4ptp4l17774-21apt-get08:00:110
134491430,4ptp4l15773-21apt-get10:15:112
134491430,4ptp4l0-21swapper/308:57:003
134491430,4ptp4l0-21swapper/209:40:302
134491430,2ptp4l0-21swapper/109:32:401
26577994236,3cyclictest33-21ksoftirqd/207:15:272
2657799422,2cyclictest121rcu_preempt09:06:102
26577994213,3cyclictest33-21ksoftirqd/208:55:202
134491420,9ptp4l0-21swapper/008:23:290
134491420,6ptp4l0-21swapper/312:05:123
134491420,5ptp4l0-21swapper/311:45:133
134491420,5ptp4l0-21swapper/309:55:133
134491420,5ptp4l0-21swapper/011:10:150
134491420,5ptp4l0-21swapper/008:05:120
134491420,4ptp4l29287-21apt-get08:25:111
134491420,4ptp4l14042-21iostat10:10:170
134491420,3ptp4l18644-21ls09:10:190
26577994136,3cyclictest33-21ksoftirqd/210:25:142
26577994110,3cyclictest33-21ksoftirqd/212:28:142
2657699410,28cyclictest17395-21seq09:09:221
134491410,9ptp4l0-21swapper/210:02:122
134491410,5ptp4l29341-21users11:50:280
134491410,5ptp4l0-21swapper/308:50:173
134491410,5ptp4l0-21swapper/107:25:111
134491410,5ptp4l0-21swapper/008:55:150
134491410,5ptp4l0-21swapper/007:10:150
134491410,5ptp4l0-21swapper/007:07:560
134491410,4ptp4l27175-21iostat_ios07:10:173
134491410,4ptp4l25229-21iostat08:15:170
134491410,4ptp4l25229-21iostat08:15:170
134491410,4ptp4l13865-21df11:20:130
134491410,4ptp4l0-21swapper/012:25:130
134491410,3ptp4l5985-21apt-get07:35:121
134491410,3ptp4l0-21swapper/008:36:540
2657699401,26cyclictest24290-21taskset08:13:331
134491400,5ptp4l29858-21iostat_ios08:25:170
134491400,5ptp4l2657899cyclictest10:05:153
134491400,5ptp4l0-21swapper/109:45:021
134491400,5ptp4l0-21swapper/009:21:050
134491400,4ptp4l8610-21ls12:15:260
134491400,4ptp4l26041-21ls09:25:263
134491400,4ptp4l25779-21ntp_states08:15:221
134491400,4ptp4l25779-21ntp_states08:15:221
134491400,4ptp4l16754-21python09:05:260
134491400,4ptp4l15172-21ntp_states12:30:233
134491400,4ptp4l1477-21apt-config09:45:010
134491400,4ptp4l14602-21meminfo11:20:181
134491400,4ptp4l0-21swapper/312:00:213
134491400,4ptp4l0-21swapper/311:25:263
134491400,4ptp4l0-21swapper/308:30:243
134491400,4ptp4l0-21swapper/307:20:163
134491400,4ptp4l0-21swapper/111:48:071
134491400,4ptp4l0-21swapper/011:35:010
134491400,4ptp4l0-21swapper/011:26:330
134491400,4ptp4l0-21swapper/009:51:350
134491400,4ptp4l0-21swapper/007:56:430
134491400,3ptp4l29842-21ls07:15:203
134491400,3ptp4l28490-21ls09:30:273
134491400,3ptp4l25938-21iostat_ios11:45:190
134491400,3ptp4l15074-21ls11:20:243
134491400,3ptp4l0-21swapper/107:53:591
26575993933,4cyclictest9-21ksoftirqd/007:15:290
134491390,5ptp4l0-21swapper/307:40:023
134491390,4ptp4l28774-21timerandwakeup10:40:260
134491390,4ptp4l0-21swapper/311:35:143
134491390,4ptp4l0-21swapper/309:20:213
134491390,4ptp4l0-21swapper/309:00:383
134491390,4ptp4l0-21swapper/207:45:272
134491390,4ptp4l0-21swapper/111:35:101
134491390,4ptp4l0-21swapper/111:25:171
134491390,4ptp4l0-21swapper/108:35:211
134491390,4ptp4l0-21swapper/012:10:210
134491390,4ptp4l0-21swapper/011:40:130
134491390,4ptp4l0-21swapper/011:09:050
134491390,4ptp4l0-21swapper/010:47:050
134491390,4ptp4l0-21swapper/010:35:550
134491390,4ptp4l0-21swapper/010:33:470
134491390,4ptp4l0-21swapper/010:20:530
134491390,4ptp4l0-21swapper/009:44:080
134491390,4ptp4l0-21swapper/009:17:360
134491390,4ptp4l0-21swapper/009:00:480
134491390,4ptp4l0-21swapper/008:53:020
134491390,4ptp4l0-21swapper/008:10:250
134491390,4ptp4l0-21swapper/007:53:100
134491390,4ptp4l0-21swapper/007:45:070
134491390,4ptp4l0-21swapper/007:41:180
134491390,3ptp4l4157-21df_inode08:40:143
134491390,3ptp4l13162-21apt-get07:50:113
134491390,3ptp4l0-21swapper/012:32:060
134491390,3ptp4l0-21swapper/009:30:220
46198380,5rtkit-daemon0-21swapper/207:09:102
26577993833,3cyclictest33-21ksoftirqd/212:20:152
134491380,5ptp4l1301-21snmpd08:10:113
134491380,4ptp4l32012-21cpuspeed_turbos10:50:130
134491380,4ptp4l0-21swapper/311:40:193
134491380,4ptp4l0-21swapper/311:13:083
134491380,4ptp4l0-21swapper/310:00:153
134491380,4ptp4l0-21swapper/309:15:213
134491380,4ptp4l0-21swapper/308:36:593
134491380,4ptp4l0-21swapper/308:04:583
134491380,4ptp4l0-21swapper/212:15:172
134491380,4ptp4l0-21swapper/111:05:231
134491380,4ptp4l0-21swapper/108:00:281
134491380,4ptp4l0-21swapper/012:35:170
134491380,4ptp4l0-21swapper/008:48:540
134491380,4ptp4l0-21swapper/008:40:110
134491380,4ptp4l0-21swapper/008:33:090
134491380,3ptp4l9670-21df_inode12:20:143
134491380,3ptp4l0-21swapper/307:35:143
134491380,3ptp4l0-21swapper/010:58:090
134491380,3ptp4l0-21swapper/007:39:260
134491370,5ptp4l212-21systemd-journal08:26:283
134491370,4ptp4l0-21swapper/312:10:293
134491370,4ptp4l0-21swapper/308:15:313
134491370,4ptp4l0-21swapper/308:15:313
134491370,4ptp4l0-21swapper/112:00:151
134491370,3ptp4l0-21swapper/109:42:041
134491360,3ptp4l0-21swapper/307:45:143
134491360,3ptp4l0-21swapper/110:56:151
2421422318,1sleep30-21swapper/307:05:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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