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2026-06-04 - 16:32
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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 Thu Jun 04, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6484996332,4cyclictest41-21ksoftirqd/310:58:023
6484996332,4cyclictest41-21ksoftirqd/310:58:023
134491630,21ptp4l26406-21sed11:20:140
6484996229,7cyclictest41-21ksoftirqd/307:30:003
6484996229,4cyclictest41-21ksoftirqd/309:56:163
6484996229,4cyclictest41-21ksoftirqd/309:56:153
3151926229,8sleep233-21ksoftirqd/208:00:272
6484996132,4cyclictest41-21ksoftirqd/310:55:003
6484996129,4cyclictest41-21ksoftirqd/309:41:123
6484996027,8cyclictest41-21ksoftirqd/307:59:223
114342600,3sleep0111rcuc/011:55:240
6484995926,8cyclictest41-21ksoftirqd/311:40:233
6484995926,7cyclictest41-21ksoftirqd/308:00:263
6484995924,4cyclictest41-21ksoftirqd/307:46:203
134491590,4ptp4l31161-21meminfo09:10:201
134491590,4ptp4l0-21swapper/207:51:252
134491590,3ptp4l30140-21ntp_states12:35:250
6484995830,8cyclictest41-21ksoftirqd/311:15:213
6484995827,3cyclictest41-21ksoftirqd/309:21:343
6484995825,8cyclictest41-21ksoftirqd/311:45:293
134491580,4ptp4l0-21swapper/108:33:401
134491580,17ptp4l24767-21ls11:15:182
6484995728,4cyclictest41-21ksoftirqd/309:17:533
6484995725,8cyclictest41-21ksoftirqd/312:10:233
6484995725,8cyclictest41-21ksoftirqd/310:10:153
6484995725,4cyclictest41-21ksoftirqd/309:07:483
6484995725,3cyclictest41-21ksoftirqd/311:03:323
6484995725,3cyclictest41-21ksoftirqd/308:18:503
6484995724,3cyclictest41-21ksoftirqd/308:40:013
6484995722,8cyclictest41-21ksoftirqd/310:20:123
6484995722,5cyclictest41-21ksoftirqd/311:58:223
134491570,4ptp4l0-21swapper/009:56:480
134491570,4ptp4l0-21swapper/009:56:480
6484995626,4cyclictest41-21ksoftirqd/312:40:003
6484995626,4cyclictest41-21ksoftirqd/310:17:263
6484995625,7cyclictest41-21ksoftirqd/311:28:093
6484995624,7cyclictest41-21ksoftirqd/309:10:223
6484995622,4cyclictest41-21ksoftirqd/311:08:473
6484995622,4cyclictest41-21ksoftirqd/307:37:443
134491560,4ptp4l0-21swapper/111:40:141
6484995525,3cyclictest41-21ksoftirqd/310:39:413
6484995523,4cyclictest41-21ksoftirqd/310:32:373
6484995515,8cyclictest41-21ksoftirqd/308:24:403
6484995514,8cyclictest41-21ksoftirqd/308:41:493
134491550,5ptp4l18773-21seq11:03:021
134491550,4ptp4l0-21swapper/108:45:241
6484995425,3cyclictest41-21ksoftirqd/308:47:363
6484995424,8cyclictest41-21ksoftirqd/307:41:133
6484995424,6cyclictest41-21ksoftirqd/310:47:093
6484995424,3cyclictest41-21ksoftirqd/309:53:113
6484995422,5cyclictest41-21ksoftirqd/309:28:323
6484995419,4cyclictest41-21ksoftirqd/311:55:013
6484995418,4cyclictest41-21ksoftirqd/309:00:003
6484995418,4cyclictest41-21ksoftirqd/309:00:003
6484995412,8cyclictest41-21ksoftirqd/308:50:243
134491540,4ptp4l0-21swapper/212:35:332
134491540,4ptp4l0-21swapper/011:12:370
6484995325,7cyclictest41-21ksoftirqd/310:00:013
6484995320,3cyclictest41-21ksoftirqd/307:35:013
6484995319,6cyclictest41-21ksoftirqd/312:20:273
6484995314,7cyclictest41-21ksoftirqd/311:37:203
6482995324,8cyclictest25-21ksoftirqd/107:35:001
6482995314,10cyclictest25-21ksoftirqd/111:25:001
134491530,5ptp4l0-21swapper/212:11:222
134491530,4ptp4l0-21swapper/112:22:301
134491530,4ptp4l0-21swapper/110:05:011
6484995224,7cyclictest41-21ksoftirqd/308:35:013
6484995223,3cyclictest41-21ksoftirqd/307:22:243
6484995219,7cyclictest41-21ksoftirqd/308:10:143
6484995217,8cyclictest41-21ksoftirqd/307:20:003
6484995217,8cyclictest41-21ksoftirqd/307:20:003
6484995216,9cyclictest41-21ksoftirqd/312:25:223
6482995226,4cyclictest25-21ksoftirqd/108:14:591
134491520,4ptp4l3601-21ntp_states09:20:211
134491520,4ptp4l0-21swapper/010:45:440
6484995132,8cyclictest41-21ksoftirqd/309:31:503
6482995119,8cyclictest25-21ksoftirqd/111:25:211
134491510,4ptp4l0-21swapper/108:40:401
134491510,4ptp4l0-21swapper/107:11:071
134491510,3ptp4l0-21swapper/212:23:562
134491510,3ptp4l0-21swapper/110:34:451
648499509,8cyclictest41-21ksoftirqd/311:22:533
6484995022,3cyclictest41-21ksoftirqd/310:25:243
6484995022,3cyclictest41-21ksoftirqd/310:25:243
6484995019,3cyclictest41-21ksoftirqd/309:00:163
6484995013,7cyclictest41-21ksoftirqd/309:45:483
134491500,4ptp4l0-21swapper/010:24:070
134491500,4ptp4l0-21swapper/007:51:580
134491500,3ptp4l0-21swapper/110:40:181
6484994913,8cyclictest41-21ksoftirqd/307:50:203
6484994911,8cyclictest41-21ksoftirqd/309:39:343
134491490,5ptp4l0-21swapper/312:00:523
134491490,4ptp4l0-21swapper/312:18:513
134491490,4ptp4l0-21swapper/307:05:143
134491490,4ptp4l0-21swapper/207:42:572
134491490,4ptp4l0-21swapper/012:01:310
134491490,4ptp4l0-21swapper/009:32:240
134491490,4ptp4l0-21swapper/008:29:570
134491490,4ptp4l0-21swapper/008:29:570
134491490,4ptp4l0-21swapper/007:25:170
134491490,3ptp4l0-21swapper/112:39:291
134491490,3ptp4l0-21swapper/107:17:451
134491490,3ptp4l0-21swapper/107:17:451
134491490,10ptp4l5554-21sed07:05:252
6482994819,8cyclictest25-21ksoftirqd/108:27:041
6482994819,8cyclictest25-21ksoftirqd/108:27:041
6482994818,9cyclictest25-21ksoftirqd/110:20:371
6482994818,4cyclictest25-21ksoftirqd/108:05:211
6482994817,4cyclictest25-21ksoftirqd/111:58:261
134491480,4ptp4l27130-21open_inodes10:10:240
134491480,4ptp4l0-21swapper/208:53:492
134491480,4ptp4l0-21swapper/208:28:332
134491480,4ptp4l0-21swapper/208:28:332
134491480,4ptp4l0-21swapper/111:16:351
134491480,4ptp4l0-21swapper/108:15:021
134491480,3ptp4l0-21swapper/112:03:361
134491480,3ptp4l0-21swapper/110:00:331
134491480,3ptp4l0-21swapper/011:30:290
6484994713,7cyclictest41-21ksoftirqd/311:10:133
6482994720,4cyclictest25-21ksoftirqd/108:00:261
6482994718,7cyclictest25-21ksoftirqd/110:28:081
6482994718,7cyclictest25-21ksoftirqd/110:28:081
134491470,4ptp4l0-21swapper/110:52:251
134491470,4ptp4l0-21swapper/110:48:331
134491470,4ptp4l0-21swapper/109:39:481
134491470,4ptp4l0-21swapper/107:54:131
134491470,4ptp4l0-21swapper/010:33:430
134491470,3ptp4l0-21swapper/008:35:150
134491470,3ptp4l0-21swapper/007:15:040
134491470,3ptp4l0-21swapper/007:15:040
134491470,2ptp4l0-21swapper/207:34:232
134491470,18ptp4l0-21swapper/008:20:170
6484994616,7cyclictest41-21ksoftirqd/312:05:143
6484994615,7cyclictest41-21ksoftirqd/310:05:163
648499461,2cyclictest121rcu_preempt08:05:133
6482994618,6cyclictest25-21ksoftirqd/110:37:141
6482994616,6cyclictest25-21ksoftirqd/107:35:171
6482994616,4cyclictest25-21ksoftirqd/109:30:191
134491460,4ptp4l0-21swapper/208:57:412
134491460,4ptp4l0-21swapper/208:57:412
134491460,3ptp4l0-21swapper/211:09:532
134491460,3ptp4l0-21swapper/111:33:231
6484994539,3cyclictest41-21ksoftirqd/308:30:003
6484994539,3cyclictest41-21ksoftirqd/308:30:003
6484994513,8cyclictest41-21ksoftirqd/310:40:133
6482994539,3cyclictest25-21ksoftirqd/111:40:001
6482994512,8cyclictest25-21ksoftirqd/112:05:161
648199451,2cyclictest121rcu_preempt10:55:000
134491450,4ptp4l0-21swapper/208:47:192
134491450,4ptp4l0-21swapper/207:39:242
134491450,4ptp4l0-21swapper/109:00:181
134491450,4ptp4l0-21swapper/008:34:020
134491450,3ptp4l0-21swapper/207:49:232
134491450,3ptp4l0-21swapper/112:10:271
134491450,3ptp4l0-21swapper/111:51:021
648499443,3cyclictest0-21swapper/312:32:073
6484994419,6cyclictest41-21ksoftirqd/311:30:203
6482994418,7cyclictest25-21ksoftirqd/108:50:431
6482994417,7cyclictest25-21ksoftirqd/112:15:421
6482994413,4cyclictest25-21ksoftirqd/110:55:241
6482994413,4cyclictest25-21ksoftirqd/110:55:241
134491440,5ptp4l0-21swapper/209:00:102
134491440,4ptp4l0-21swapper/012:31:300
134491440,3ptp4l28273-21apt-get10:15:122
134491440,3ptp4l0-21swapper/109:44:371
134491440,3ptp4l0-21swapper/009:35:240
648299438,8cyclictest25-21ksoftirqd/112:25:131
6482994337,3cyclictest25-21ksoftirqd/108:55:191
6482994337,3cyclictest25-21ksoftirqd/108:55:191
6482994312,3cyclictest25-21ksoftirqd/111:05:211
134491430,9ptp4l0-21swapper/011:49:140
134491430,9ptp4l0-21swapper/007:38:250
134491430,8ptp4l0-21swapper/208:36:092
134491430,5ptp4l0-21swapper/110:15:151
134491430,3ptp4l0-21swapper/211:53:312
134491430,3ptp4l0-21swapper/108:23:061
134491430,3ptp4l0-21swapper/009:01:350
134491430,3ptp4l0-21swapper/007:58:470
134491430,2ptp4l0-21swapper/011:43:460
648299427,4cyclictest25-21ksoftirqd/109:55:141
648299427,4cyclictest25-21ksoftirqd/109:55:131
6482994213,6cyclictest25-21ksoftirqd/109:50:151
134691420,10getstats0-21swapper/208:17:102
134491420,9ptp4l0-21swapper/210:14:522
134491420,9ptp4l0-21swapper/209:45:072
134491420,9ptp4l0-21swapper/209:31:562
134491420,5ptp4l0-21swapper/007:45:150
134491420,4ptp4l29390-21meminfo11:25:190
134491420,4ptp4l20303-21ntp_states11:05:230
134491420,3ptp4l22110-21ls10:00:192
134491420,10ptp4l0-21swapper/209:42:252
648299419,7cyclictest25-21ksoftirqd/107:25:471
6482994136,3cyclictest25-21ksoftirqd/111:10:261
134691410,10getstats0-21swapper/208:08:092
134491410,9ptp4l0-21swapper/211:42:212
134491410,9ptp4l0-21swapper/209:54:152
134491410,8ptp4l0-21swapper/209:59:152
134491410,8ptp4l0-21swapper/209:59:152
134491410,5ptp4l30210-21apt-get09:10:122
134491410,5ptp4l0-21swapper/211:35:162
134491410,5ptp4l0-21swapper/109:15:251
134491410,5ptp4l0-21swapper/007:07:580
134491410,4ptp4l347-21diskstats09:15:132
134491410,4ptp4l28279-21iostat_ios07:55:181
134491410,4ptp4l26289-21diskstats10:10:151
134491410,4ptp4l14122-21apt-get10:55:020
134491410,4ptp4l14122-21apt-get10:55:020
134491410,4ptp4l12460-21ntp_states07:20:210
134491410,4ptp4l0-21swapper/307:10:273
134491410,4ptp4l0-21swapper/210:32:302
134491410,4ptp4l0-21swapper/010:41:360
134491410,4ptp4l0-21swapper/008:00:130
134491410,4ptp4l0-21swapper/007:30:110
134491410,3ptp4l26148-21apt-get11:20:122
134491410,3ptp4l24214-21apt-get12:25:112
134491410,3ptp4l1612-21ls09:15:250
134491410,3ptp4l0-21swapper/012:26:150
6482994034,3cyclictest25-21ksoftirqd/107:20:121
6481994035,3cyclictest9-21ksoftirqd/010:05:180
134491400,8ptp4l0-21swapper/210:08:182
134491400,5ptp4l0-21swapper/209:23:122
134491400,5ptp4l0-21swapper/107:07:451
134491400,5ptp4l0-21swapper/012:05:400
134491400,5ptp4l0-21swapper/010:35:180
134491400,5ptp4l0-21swapper/007:10:250
134491400,4ptp4l21481-21diskstats10:00:140
134491400,4ptp4l14774-21iostat09:45:170
134491400,4ptp4l14544-21apt-get10:55:042
134491400,4ptp4l14544-21apt-get10:55:042
134491400,4ptp4l0-21swapper/210:50:482
134491400,4ptp4l0-21swapper/207:59:062
134491400,4ptp4l0-21swapper/207:25:152
134491400,4ptp4l0-21swapper/107:40:151
134491400,4ptp4l0-21swapper/012:24:210
134491400,4ptp4l0-21swapper/009:41:500
134491400,4ptp4l0-21swapper/009:05:110
134491400,4ptp4l0-21swapper/008:42:000
134491400,4ptp4l0-21swapper/007:40:230
134491400,3ptp4l4495-21apt-get08:14:280
134491400,3ptp4l436-21apt-get10:25:110
134491400,3ptp4l436-21apt-get10:25:110
134491400,3ptp4l17077-21iostat_ios09:50:170
134491400,3ptp4l0-21swapper/112:34:001
134491400,3ptp4l0-21swapper/009:25:360
134491390,5ptp4l17613-21ps12:10:200
134491390,5ptp4l0-21swapper/211:45:222
134491390,5ptp4l0-21swapper/209:25:352
134491390,5ptp4l0-21swapper/208:33:152
134491390,4ptp4l28221-21diskstats09:05:141
134491390,4ptp4l23861-21iostat08:55:160
134491390,4ptp4l23861-21iostat08:55:160
134491390,4ptp4l0-21swapper/212:17:202
134491390,4ptp4l0-21swapper/212:05:412
134491390,4ptp4l0-21swapper/212:03:232
134491390,4ptp4l0-21swapper/211:55:182
134491390,4ptp4l0-21swapper/211:34:442
134491390,4ptp4l0-21swapper/211:14:312
134491390,4ptp4l0-21swapper/211:00:272
134491390,4ptp4l0-21swapper/210:47:162
134491390,4ptp4l0-21swapper/210:42:312
134491390,4ptp4l0-21swapper/210:38:512
134491390,4ptp4l0-21swapper/210:25:052
134491390,4ptp4l0-21swapper/210:25:052
134491390,4ptp4l0-21swapper/209:38:392
134491390,4ptp4l0-21swapper/209:05:532
134491390,4ptp4l0-21swapper/208:23:342
134491390,4ptp4l0-21swapper/208:11:502
134491390,4ptp4l0-21swapper/207:15:012
134491390,4ptp4l0-21swapper/207:15:012
134491390,4ptp4l0-21swapper/207:11:432
134491390,4ptp4l0-21swapper/109:45:411
134491390,4ptp4l0-21swapper/012:17:160
134491390,4ptp4l0-21swapper/011:00:250
134491390,4ptp4l0-21swapper/009:24:510
134491390,4ptp4l0-21swapper/008:53:470
134491390,4ptp4l0-21swapper/008:47:040
134491390,3ptp4l8126-21df_inode11:50:140
134491390,3ptp4l5947-21ntp_states08:15:230
134491390,3ptp4l4785-21apt-get09:25:111
134491390,3ptp4l28845-21iostat_ios10:15:170
134491390,3ptp4l1977-21ntp_states11:35:220
134491390,3ptp4l1470-21python08:05:250
134491390,3ptp4l0-21swapper/211:26:562
134491390,3ptp4l0-21swapper/111:45:201
134491380,4ptp4l25452-21grep11:15:260
134491380,4ptp4l0-21swapper/207:20:092
134491380,4ptp4l0-21swapper/009:10:580
134491380,3ptp4l0-21swapper/212:31:542
134491380,3ptp4l0-21swapper/210:22:152
648299371,3cyclictest121rcu_preempt08:35:221
134491370,4ptp4l0-21swapper/208:42:472
134491370,3ptp4l0-21swapper/107:45:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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