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2026-05-18 - 16:28
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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 May 18, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1307221690,5sleep31896999cyclictest10:25:003
18967998233,4cyclictest33-21ksoftirqd/212:10:292
134491740,25ptp4l32680-21seq08:49:061
18969996932,5cyclictest41-21ksoftirqd/308:08:443
134491690,7ptp4l0-21swapper/007:05:170
1896799663,33cyclictest0-21swapper/208:40:162
1896799662,35cyclictest0-21swapper/210:06:552
1896799662,35cyclictest0-21swapper/210:06:552
224122650,4sleep00-21swapper/008:25:180
18969996529,4cyclictest41-21ksoftirqd/309:38:113
1896799652,35cyclictest0-21swapper/208:29:552
1896799652,34cyclictest0-21swapper/207:56:552
1896799652,33cyclictest0-21swapper/209:29:432
185202650,4sleep20-21swapper/210:35:192
18969996427,9cyclictest41-21ksoftirqd/311:50:273
18967996426,4cyclictest33-21ksoftirqd/209:50:172
1896799642,36cyclictest0-21swapper/211:22:562
1896799642,35cyclictest0-21swapper/210:10:202
1896799642,33cyclictest0-21swapper/211:45:172
1896799642,27cyclictest0-21swapper/209:11:332
1896799642,27cyclictest0-21swapper/209:11:332
18967996322,6cyclictest33-21ksoftirqd/208:00:242
18969996232,5cyclictest41-21ksoftirqd/311:25:183
18967996232,4cyclictest33-21ksoftirqd/212:35:192
18967996232,4cyclictest33-21ksoftirqd/208:10:012
18967996230,9cyclictest33-21ksoftirqd/210:30:282
18967996226,8cyclictest33-21ksoftirqd/212:20:222
1896799622,33cyclictest0-21swapper/209:49:452
1896799622,32cyclictest0-21swapper/208:55:242
134491620,3ptp4l8190-21taskset11:22:580
18969996133,3cyclictest41-21ksoftirqd/310:25:133
18969996130,4cyclictest41-21ksoftirqd/309:29:423
18969996130,3cyclictest41-21ksoftirqd/311:35:163
18969996129,3cyclictest41-21ksoftirqd/309:20:273
18969996127,4cyclictest41-21ksoftirqd/311:50:013
18969996127,4cyclictest41-21ksoftirqd/307:20:233
18969996118,9cyclictest41-21ksoftirqd/308:45:193
18967996125,3cyclictest33-21ksoftirqd/212:05:272
18967996123,4cyclictest33-21ksoftirqd/211:00:192
1896799612,32cyclictest0-21swapper/212:15:232
18967996116,7cyclictest33-21ksoftirqd/210:20:342
134491610,4ptp4l0-21swapper/207:30:082
134491610,17ptp4l0-21swapper/107:55:261
18969996029,4cyclictest41-21ksoftirqd/308:43:553
18969996028,3cyclictest41-21ksoftirqd/307:10:173
18969996027,3cyclictest41-21ksoftirqd/309:54:593
18969996023,4cyclictest41-21ksoftirqd/312:05:273
18969996023,4cyclictest41-21ksoftirqd/310:04:593
18967996022,8cyclictest33-21ksoftirqd/211:45:002
134491600,3ptp4l0-21swapper/109:45:271
18969995926,11cyclictest41-21ksoftirqd/311:18:183
18967995930,9cyclictest33-21ksoftirqd/210:40:262
18967995926,7cyclictest33-21ksoftirqd/211:10:242
18967995926,7cyclictest33-21ksoftirqd/211:10:242
134491590,5ptp4l0-21swapper/012:15:230
134491590,3ptp4l0-21swapper/208:45:292
134491590,3ptp4l0-21swapper/108:59:241
18969995830,4cyclictest41-21ksoftirqd/308:10:243
18969995827,3cyclictest41-21ksoftirqd/310:10:163
18967995825,7cyclictest33-21ksoftirqd/209:30:262
18967995822,4cyclictest33-21ksoftirqd/208:30:232
134491580,4ptp4l0-21swapper/010:15:190
134491580,14ptp4l0-21swapper/010:50:180
134491570,4ptp4l20345-21df_abs11:50:141
134491570,4ptp4l0-21swapper/009:00:150
134491570,3ptp4l0-21swapper/109:06:351
134491570,3ptp4l0-21swapper/008:50:210
134491570,3ptp4l0-21swapper/007:45:140
134491570,2ptp4l0-21swapper/012:10:260
18969995629,3cyclictest41-21ksoftirqd/308:20:003
18969995623,4cyclictest41-21ksoftirqd/308:35:213
18969995615,9cyclictest41-21ksoftirqd/308:00:173
18967995623,5cyclictest33-21ksoftirqd/212:04:002
18967995618,8cyclictest33-21ksoftirqd/210:51:402
134491560,4ptp4l0-21swapper/107:50:201
134491560,4ptp4l0-21swapper/107:09:071
134491560,3ptp4l0-21swapper/111:33:181
249512550,6sleep01896499cyclictest08:30:240
1896999559,3cyclictest121rcu_preempt08:59:083
18969995528,4cyclictest41-21ksoftirqd/307:25:123
18969995528,3cyclictest41-21ksoftirqd/310:49:493
18969995523,9cyclictest41-21ksoftirqd/308:25:183
18969995522,4cyclictest41-21ksoftirqd/310:30:263
18969995522,4cyclictest41-21ksoftirqd/307:45:253
18967995517,3cyclictest33-21ksoftirqd/208:35:192
134491550,3ptp4l0-21swapper/311:41:163
134491550,3ptp4l0-21swapper/110:26:481
18969995425,4cyclictest41-21ksoftirqd/309:31:353
18969995425,3cyclictest41-21ksoftirqd/312:25:173
18969995424,3cyclictest41-21ksoftirqd/311:00:143
18969995423,4cyclictest41-21ksoftirqd/307:15:163
18969995422,3cyclictest121rcu_preempt09:46:253
18969995417,4cyclictest41-21ksoftirqd/311:30:233
18967995422,9cyclictest33-21ksoftirqd/208:50:122
18967995420,8cyclictest33-21ksoftirqd/209:43:402
18967995419,9cyclictest33-21ksoftirqd/210:19:182
134491540,5ptp4l1896499cyclictest08:45:200
134491540,4ptp4l0-21swapper/312:00:193
134491540,4ptp4l0-21swapper/311:12:323
134491540,4ptp4l0-21swapper/311:12:323
134491540,3ptp4l0-21swapper/107:10:221
18969995322,6cyclictest41-21ksoftirqd/312:35:293
18969995320,7cyclictest41-21ksoftirqd/311:55:223
18969995319,4cyclictest41-21ksoftirqd/310:55:283
1896799532,34cyclictest0-21swapper/207:12:552
18967995321,8cyclictest33-21ksoftirqd/210:00:452
18967995319,3cyclictest33-21ksoftirqd/207:43:172
134491530,3ptp4l0-21swapper/107:16:571
18969995220,6cyclictest41-21ksoftirqd/312:31:483
18969995219,4cyclictest41-21ksoftirqd/308:50:113
18967995221,8cyclictest33-21ksoftirqd/207:50:142
178922520,3sleep30-21swapper/307:05:263
134491520,4ptp4l0-21swapper/110:08:531
134491520,4ptp4l0-21swapper/110:08:531
134491520,3ptp4l0-21swapper/110:51:311
134491520,11ptp4l0-21swapper/107:25:151
134491520,10ptp4l0-21swapper/007:33:200
18969995124,4cyclictest41-21ksoftirqd/312:10:223
18969995123,3cyclictest41-21ksoftirqd/307:30:353
18969995120,3cyclictest41-21ksoftirqd/312:15:243
1896799515,3cyclictest33-21ksoftirqd/211:55:012
18967995132,8cyclictest33-21ksoftirqd/212:25:162
1896799512,32cyclictest0-21swapper/211:31:552
134491510,4ptp4l0-21swapper/110:46:551
134491510,4ptp4l0-21swapper/110:30:201
134491510,4ptp4l0-21swapper/109:58:491
134491510,4ptp4l0-21swapper/109:17:511
134491510,4ptp4l0-21swapper/007:25:380
134491510,10ptp4l0-21swapper/111:55:221
18969995029,5cyclictest41-21ksoftirqd/308:22:263
1896999502,7cyclictest0-21swapper/310:40:113
18969995019,6cyclictest41-21ksoftirqd/311:22:003
18969995019,6cyclictest41-21ksoftirqd/307:42:573
1896799503,8cyclictest33-21ksoftirqd/207:25:012
18967995031,10cyclictest33-21ksoftirqd/207:25:192
18967995030,9cyclictest33-21ksoftirqd/209:04:592
18967995023,3cyclictest33-21ksoftirqd/208:11:032
134491500,4ptp4l0-21swapper/112:24:321
134491500,4ptp4l0-21swapper/108:20:161
134491500,4ptp4l0-21swapper/108:15:031
134491500,4ptp4l0-21swapper/009:48:480
134491500,3ptp4l0-21swapper/109:25:221
1896999495,7cyclictest41-21ksoftirqd/310:50:253
18969994935,4cyclictest41-21ksoftirqd/311:09:133
18969994935,4cyclictest41-21ksoftirqd/309:10:173
18969994935,4cyclictest41-21ksoftirqd/309:10:173
1896999493,3cyclictest41-21ksoftirqd/310:05:253
1896999493,3cyclictest41-21ksoftirqd/310:05:253
18969994931,9cyclictest41-21ksoftirqd/312:20:293
18969994922,3cyclictest41-21ksoftirqd/308:30:263
1896999490,3cyclictest121rcu_preempt10:20:003
1896999490,3cyclictest121rcu_preempt07:55:003
18967994940,3cyclictest33-21ksoftirqd/211:25:262
18967994939,3cyclictest33-21ksoftirqd/207:50:002
1896799493,5cyclictest33-21ksoftirqd/211:15:282
18967994930,9cyclictest33-21ksoftirqd/211:50:132
18967994924,3cyclictest33-21ksoftirqd/211:35:242
1896799492,2cyclictest121rcu_preempt10:00:002
134491490,4ptp4l0-21swapper/112:36:441
134491490,4ptp4l0-21swapper/111:39:481
134491490,4ptp4l0-21swapper/111:19:071
134491490,4ptp4l0-21swapper/012:04:000
18969994836,4cyclictest41-21ksoftirqd/309:59:593
18969994834,4cyclictest41-21ksoftirqd/309:15:283
18969994832,4cyclictest41-21ksoftirqd/309:40:153
18969994831,4cyclictest41-21ksoftirqd/309:05:263
18969994815,7cyclictest41-21ksoftirqd/307:55:573
1896799485,2cyclictest33-21ksoftirqd/209:10:002
1896799484,2cyclictest121rcu_preempt11:00:002
18967994833,4cyclictest33-21ksoftirqd/209:35:252
18967994829,8cyclictest33-21ksoftirqd/210:45:272
18967994817,8cyclictest33-21ksoftirqd/209:17:242
134491480,4ptp4l0-21swapper/112:28:221
134491480,4ptp4l0-21swapper/111:29:321
134491480,4ptp4l0-21swapper/111:04:481
134491480,4ptp4l0-21swapper/108:34:301
134491480,3ptp4l0-21swapper/108:04:421
1896999471,6cyclictest0-21swapper/309:03:543
18967994728,9cyclictest33-21ksoftirqd/208:15:122
1896499470,3cyclictest121rcu_preempt08:40:000
134491470,4ptp4l0-21swapper/112:10:211
134491470,4ptp4l0-21swapper/111:10:001
134491470,4ptp4l0-21swapper/111:10:001
134491470,3ptp4l1896499cyclictest09:31:130
134491470,3ptp4l0-21swapper/109:33:271
18969994632,4cyclictest41-21ksoftirqd/310:35:183
1896799463,6cyclictest121rcu_preempt09:20:112
18967994635,3cyclictest33-21ksoftirqd/211:10:012
18967994629,8cyclictest33-21ksoftirqd/212:30:162
18967994629,8cyclictest33-21ksoftirqd/210:25:252
1896799462,3cyclictest121rcu_preempt07:40:002
134491460,3ptp4l0-21swapper/107:46:381
134491460,2ptp4l0-21swapper/112:05:121
1896999451,3cyclictest121rcu_preempt07:35:143
18967994529,4cyclictest33-21ksoftirqd/207:15:252
134491450,4ptp4l0-21swapper/109:38:311
134491450,3ptp4l0-21swapper/109:20:581
134491450,3ptp4l0-21swapper/107:35:281
134491450,2ptp4l121rcu_preempt12:21:510
1896799441,2cyclictest121rcu_preempt08:20:182
134491440,9ptp4l0-21swapper/011:36:240
134491440,9ptp4l0-21swapper/011:29:000
134491440,9ptp4l0-21swapper/010:28:570
134491440,9ptp4l0-21swapper/008:14:510
134491440,4ptp4l0-21swapper/008:15:240
134491440,11ptp4l9-21ksoftirqd/008:07:190
18965994330,5cyclictest25-21ksoftirqd/108:40:011
134491430,5ptp4l17279-21df09:25:130
134491430,3ptp4l0-21swapper/007:50:580
18964994235,4cyclictest30617-21cron09:55:000
134491420,8ptp4l0-21swapper/010:57:100
134491420,5ptp4l6390-21diskstats10:10:160
134491420,5ptp4l10725-21iostat_ios09:10:201
134491420,5ptp4l10725-21iostat_ios09:10:201
134491420,5ptp4l0-21swapper/012:05:290
134491420,5ptp4l0-21swapper/009:40:200
134491420,4ptp4l3280-21diskstats08:55:150
134491420,4ptp4l24605-21meminfo07:20:200
134491420,4ptp4l21115-21ls10:40:191
134491420,4ptp4l0-21swapper/111:48:551
134491420,4ptp4l0-21swapper/107:20:291
134491420,4ptp4l0-21swapper/009:55:220
134491420,3ptp4l24923-21ls09:40:201
134491420,3ptp4l0-21swapper/009:38:430
134491410,9ptp4l0-21swapper/008:24:310
134491410,8ptp4l9-21ksoftirqd/010:43:390
134491410,5ptp4l4145-21df11:15:140
134491410,5ptp4l0-21swapper/110:55:161
134491410,4ptp4l7999-21ntp_states12:30:231
134491410,4ptp4l31988-21df_inode11:05:151
134491410,4ptp4l28007-21apt-get07:30:021
134491410,4ptp4l24674-21apt-get12:00:011
134491410,4ptp4l1787-21df11:10:140
134491410,4ptp4l1787-21df11:10:140
134491410,4ptp4l10509-21apt-get10:20:021
134491410,4ptp4l1009-21perl08:50:131
134491410,4ptp4l0-21swapper/110:10:151
134491410,4ptp4l0-21swapper/109:02:511
134491410,4ptp4l0-21swapper/108:10:201
134491410,4ptp4l0-21swapper/011:56:580
134491410,4ptp4l0-21swapper/011:41:170
134491410,4ptp4l0-21swapper/010:02:080
134491410,4ptp4l0-21swapper/008:02:010
134491410,3ptp4l0-21swapper/108:05:571
134491410,3ptp4l0-21swapper/010:34:020
134491410,2ptp4l121rcu_preempt07:43:490
18965994035,3cyclictest25-21ksoftirqd/110:04:591
134491400,5ptp4l30103-21vmstat08:40:290
134491400,5ptp4l18799-21apt-key07:10:010
134491400,5ptp4l0-21swapper/112:17:591
134491400,4ptp4l0-21swapper/011:50:220
134491400,4ptp4l0-21swapper/011:06:380
134491400,4ptp4l0-21swapper/009:19:590
134491400,4ptp4l0-21swapper/009:10:210
134491400,4ptp4l0-21swapper/009:10:210
134491400,4ptp4l0-21swapper/009:07:010
134491400,4ptp4l0-21swapper/007:55:140
134491400,4ptp4l0-21swapper/007:35:530
134491400,4ptp4l0-21swapper/007:15:210
134491400,3ptp4l3106-21apt-get10:05:040
134491400,3ptp4l3106-21apt-get10:05:040
134491400,3ptp4l23415-21ls10:45:210
134491400,3ptp4l21939-21hddtemp_smartct08:25:161
134491390,5ptp4l0-21swapper/110:15:121
134491390,5ptp4l0-21swapper/109:50:141
134491390,4ptp4l0-21swapper/110:36:381
134491390,4ptp4l0-21swapper/108:40:241
134491390,4ptp4l0-21swapper/107:43:251
134491390,4ptp4l0-21swapper/011:30:260
134491390,4ptp4l0-21swapper/011:02:000
134491390,4ptp4l0-21swapper/010:35:150
134491390,4ptp4l0-21swapper/010:22:340
134491390,3ptp4l4528-21df12:25:140
134491390,3ptp4l0-21swapper/011:45:210
134491390,2ptp4l10158-21ls12:35:220
18964993833,3cyclictest9-21ksoftirqd/012:30:140
134491380,4ptp4l0-21swapper/111:42:241
134491380,4ptp4l0-21swapper/009:20:120
134491380,3ptp4l0-21swapper/111:20:221
46198320,11rtkit-daemon0-21swapper/207:05:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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