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2026-08-29 - 21:12
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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 Sat Aug 29, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
537321440,5sleep35377-21cpuspeed10:20:143
14196996913,11cyclictest1317-21runrttasks11:36:300
14196996911,11cyclictest4759-21unixbench_multi11:25:270
14196996910,11cyclictest15447-21ntpq09:30:210
14196996815,10cyclictest14212-21taskset07:10:090
14196996811,16cyclictest31910-21cat08:55:260
251182670,5sleep21419899cyclictest08:40:292
14196996714,9cyclictest15746-21awk11:50:210
14196996615,10cyclictest1317-21runrttasks10:52:120
14196996610,22cyclictest28459-21df10:00:150
14196996610,11cyclictest19833-21missed_timers07:20:220
14196996514,10cyclictest1317-21runrttasks11:21:290
14196996513,11cyclictest1301-21snmpd08:31:040
14196996511,10cyclictest620-21df_abs09:00:160
14196996410,11cyclictest23854-21sed09:50:150
1419699639,11cyclictest14275-21latency_hist10:40:000
14196996317,11cyclictest6840-21taskset09:10:350
14196996315,11cyclictest27867-21taskset11:07:190
14196996315,10cyclictest32543-21taskset10:07:330
14196996312,16cyclictest23678-21df_abs07:30:130
14196996312,10cyclictest17664-21irqrtprio11:55:190
14196996311,9cyclictest0-21swapper/009:40:240
14196996311,11cyclictest21951-21cut07:25:190
1419699629,14cyclictest5786-21fschecks_count11:30:160
1419699629,11cyclictest11007-21date11:40:190
1419699628,10cyclictest6339-21switchtime08:00:270
14196996218,10cyclictest2476-21taskset12:31:040
14196996215,11cyclictest22806-21taskset08:35:350
14196996215,10cyclictest27573-21taskset09:55:420
14196996213,45cyclictest3305-21hwlatdetect09:05:180
14196996211,11cyclictest29190-21kernelversion11:10:200
14196996211,10cyclictest8905-21cat09:15:280
1419699619,12cyclictest20218-21date12:00:180
14196996116,11cyclictest4676-21taskset07:59:540
14196996113,9cyclictest7359-21grep08:05:140
14196996113,11cyclictest4757-21seq10:16:220
14196996112,11cyclictest13342-21expr09:25:240
14196996111,8cyclictest2316-21latency_hist07:55:010
14196996111,11cyclictest23936-21ls12:10:120
14196996110,11cyclictest14981-21cut08:20:190
14196996110,11cyclictest14981-21cut08:20:190
14197996010,10cyclictest25-21ksoftirqd/107:40:011
14196996019,38cyclictest10338-21hddtemp_smartct10:30:160
14196996018,17cyclictest32238-21taskset07:48:090
14196996018,10cyclictest11669-21seq09:23:140
14196996017,16cyclictest5132-21seq12:40:000
14196996017,11cyclictest25434-21runrttasks08:41:510
14196996013,10cyclictest1317-21runrttasks09:46:570
134491600,4ptp4l0-21swapper/111:41:031
1419699599,15cyclictest10442-21cut08:10:190
1419699598,16cyclictest448-21dbus-daemon08:45:260
14196995919,37cyclictest14043-21users11:45:290
14196995918,15cyclictest9390-21seq10:26:370
14196995914,11cyclictest1317-21runrttasks12:08:030
14196995913,8cyclictest18173-21awk08:25:300
14196995817,11cyclictest30038-21taskset07:44:240
14196995817,10cyclictest30353-21seq12:22:390
14196995810,18cyclictest22980-21sed10:55:270
134491580,5ptp4l0-21swapper/112:20:221
14196995720,34cyclictest29351-21ntp_states08:50:250
14196995718,15cyclictest25778-21taskset11:04:590
14196995715,11cyclictest32521-21runrttasks12:26:000
134491570,4ptp4l321ktimersoftd/207:20:302
134491570,3ptp4l0-21swapper/212:35:152
134491570,17ptp4l0-21swapper/309:35:213
14196995618,16cyclictest18761-21seq10:48:390
134491560,4ptp4l0-21swapper/108:51:191
134491560,12ptp4l0-21swapper/208:55:292
14196995511,15cyclictest12792-21sed08:15:190
134491550,3ptp4l0-21swapper/308:10:163
134491550,3ptp4l0-21swapper/207:14:552
1419699546,18cyclictest0-21swapper/007:15:130
14196995414,10cyclictest18521-21seq09:37:420
134491540,4ptp4l0-21swapper/311:20:213
134491530,7ptp4l13533-21users07:05:281
134491530,4ptp4l0-21swapper/310:04:363
134491530,4ptp4l0-21swapper/309:45:023
134491530,4ptp4l0-21swapper/309:23:383
134491530,4ptp4l0-21swapper/110:49:431
134491530,3ptp4l0-21swapper/311:59:003
14196995215,11cyclictest7233-21runrttasks10:23:240
134491520,5ptp4l5143-21apt-get09:10:112
134491520,4ptp4l0-21swapper/112:05:441
134491520,3ptp4l0-21swapper/111:03:291
134491520,11ptp4l0-21swapper/307:21:523
134491520,11ptp4l0-21swapper/112:15:351
14197995118,8cyclictest25-21ksoftirqd/107:30:001
14196995116,11cyclictest32759-21taskset11:18:270
14196995111,7cyclictest15610-21ntpq10:40:220
134491510,4ptp4l0-21swapper/312:18:103
134491510,4ptp4l0-21swapper/111:25:471
134491510,4ptp4l0-21swapper/107:31:551
14196995017,6cyclictest2386-21runrttasks10:11:120
134491500,6ptp4l0-21swapper/007:05:180
134491500,3ptp4l0-21swapper/311:11:593
134491500,3ptp4l0-21swapper/111:17:151
134491490,10ptp4l0-21swapper/107:45:261
14197994815,4cyclictest25-21ksoftirqd/107:20:211
14197994811,7cyclictest25-21ksoftirqd/108:45:221
134491480,3ptp4l0-21swapper/110:14:451
1419799472,2cyclictest121rcu_preempt10:05:201
134491470,4ptp4l0-21swapper/310:10:023
134491470,4ptp4l0-21swapper/211:24:112
134491470,12ptp4l0-21swapper/208:25:312
1419799465,8cyclictest25-21ksoftirqd/112:30:401
14197994641,3cyclictest25-21ksoftirqd/108:00:001
14197994614,6cyclictest25-21ksoftirqd/110:55:261
134491460,4ptp4l0-21swapper/109:49:121
134491460,3ptp4l0-21swapper/310:30:193
14198994540,3cyclictest33-21ksoftirqd/209:20:002
134491450,4ptp4l0-21swapper/310:48:203
134491450,4ptp4l0-21swapper/310:07:413
134491450,3ptp4l0-21swapper/208:35:222
134491450,3ptp4l0-21swapper/111:13:581
134491450,10ptp4l0-21swapper/210:39:502
134491450,10ptp4l0-21swapper/208:50:322
14197994423,3cyclictest25-21ksoftirqd/109:00:261
14197994414,3cyclictest25-21ksoftirqd/108:39:591
134491440,9ptp4l0-21swapper/209:05:292
134491440,9ptp4l0-21swapper/208:04:502
134491440,5ptp4l0-21swapper/209:50:122
134491440,4ptp4l4034-21ls12:35:211
134491440,4ptp4l0-21swapper/311:42:033
134491440,4ptp4l0-21swapper/310:56:313
134491440,4ptp4l0-21swapper/210:41:222
134491440,4ptp4l0-21swapper/107:40:261
134491440,3ptp4l0-21swapper/111:52:061
134491440,2ptp4l0-21swapper/110:15:401
134491440,11ptp4l0-21swapper/210:00:542
134491440,10ptp4l0-21swapper/211:03:132
1419799439,3cyclictest25-21ksoftirqd/107:51:211
14197994337,3cyclictest25-21ksoftirqd/110:05:001
14197994314,6cyclictest25-21ksoftirqd/112:10:131
14197994310,6cyclictest25-21ksoftirqd/110:40:271
1419799430,2cyclictest121rcu_preempt11:55:291
1419799430,2cyclictest121rcu_preempt09:44:511
134491430,9ptp4l0-21swapper/211:30:092
134491430,9ptp4l0-21swapper/210:10:332
134491430,5ptp4l0-21swapper/310:15:133
134491430,5ptp4l0-21swapper/208:30:132
134491430,4ptp4l0-21swapper/309:19:453
134491430,4ptp4l0-21swapper/108:20:581
134491430,4ptp4l0-21swapper/108:20:581
134491430,3ptp4l0-21swapper/312:23:063
134491430,3ptp4l0-21swapper/209:22:352
134491430,3ptp4l0-21swapper/110:33:431
134491430,3ptp4l0-21swapper/110:20:281
134491430,3ptp4l0-21swapper/109:31:241
46198420,2rtkit-daemon460-21rtkit-daemon10:33:472
14197994213,9cyclictest25-21ksoftirqd/109:20:131
1419799420,2cyclictest121rcu_preempt11:50:011
134491420,8ptp4l0-21swapper/209:57:102
134491420,5ptp4l20071-21meminfo10:50:212
134491420,5ptp4l0-21swapper/311:30:243
134491420,4ptp4l26177-21apt-get12:15:130
134491420,4ptp4l24756-21ls11:00:223
134491420,4ptp4l0-21swapper/308:43:543
134491420,4ptp4l0-21swapper/211:46:512
134491420,4ptp4l0-21swapper/112:26:221
134491420,3ptp4l0-21swapper/108:33:271
14198994135,3cyclictest33-21ksoftirqd/212:35:002
1419799418,8cyclictest25-21ksoftirqd/108:05:171
14197994135,3cyclictest25-21ksoftirqd/112:00:271
14197994135,3cyclictest25-21ksoftirqd/111:30:191
1419799411,2cyclictest121rcu_preempt09:58:041
14197994110,3cyclictest25-21ksoftirqd/109:05:171
1419799410,2cyclictest121rcu_preempt09:35:181
134491410,9ptp4l0-21swapper/211:42:262
134491410,9ptp4l0-21swapper/207:54:592
134491410,9ptp4l0-21swapper/207:47:222
134491410,5ptp4l0-21swapper/312:35:133
134491410,5ptp4l0-21swapper/209:00:562
134491410,5ptp4l0-21swapper/109:15:151
134491410,4ptp4l15179-21meminfo07:10:211
134491410,4ptp4l14533-21diskstats08:20:153
134491410,4ptp4l14533-21diskstats08:20:153
134491410,4ptp4l12061-21apt-get09:25:113
134491410,4ptp4l0-21swapper/311:20:013
134491410,4ptp4l0-21swapper/309:55:153
134491410,4ptp4l0-21swapper/211:15:142
134491410,4ptp4l0-21swapper/209:36:102
134491410,4ptp4l0-21swapper/108:26:481
134491410,4ptp4l0-21swapper/108:16:001
134491410,4ptp4l0-21swapper/108:00:241
134491410,3ptp4l20543-21ls10:50:273
134491410,3ptp4l15380-21ls09:30:202
134491410,3ptp4l0-21swapper/108:56:551
14197994011,8cyclictest25-21ksoftirqd/108:40:191
14197994010,8cyclictest25-21ksoftirqd/109:25:241
134491400,5ptp4l21349-21cron12:05:003
134491400,5ptp4l0-21swapper/312:05:453
134491400,5ptp4l0-21swapper/310:25:133
134491400,5ptp4l0-21swapper/212:23:002
134491400,4ptp4l21272-21apt-get09:45:112
134491400,4ptp4l17537-21iostat_ios11:55:192
134491400,4ptp4l0-21swapper/311:05:213
134491400,4ptp4l0-21swapper/310:35:213
134491400,4ptp4l0-21swapper/309:32:223
134491400,4ptp4l0-21swapper/308:48:293
134491400,4ptp4l0-21swapper/307:30:273
134491400,4ptp4l0-21swapper/212:11:032
134491400,4ptp4l0-21swapper/210:20:032
134491400,4ptp4l0-21swapper/210:17:542
134491400,4ptp4l0-21swapper/209:25:122
134491400,4ptp4l0-21swapper/208:10:232
134491400,4ptp4l0-21swapper/207:57:372
134491400,4ptp4l0-21swapper/111:06:211
134491400,4ptp4l0-21swapper/007:35:390
134491400,3ptp4l7616-21apt-get10:25:122
134491400,3ptp4l30256-21apt-get10:05:022
14198993935,3cyclictest33-21ksoftirqd/207:25:192
14197993934,3cyclictest25-21ksoftirqd/109:10:151
14197993933,3cyclictest25-21ksoftirqd/110:50:191
14197993933,3cyclictest25-21ksoftirqd/110:35:281
14197993933,3cyclictest25-21ksoftirqd/107:15:331
134491390,6ptp4l212-21systemd-journal09:00:193
134491390,5ptp4l0-21swapper/311:25:123
134491390,5ptp4l0-21swapper/212:05:122
134491390,5ptp4l0-21swapper/110:28:341
134491390,4ptp4l19828-21cat08:30:213
134491390,4ptp4l0-21swapper/312:25:203
134491390,4ptp4l0-21swapper/311:50:173
134491390,4ptp4l0-21swapper/311:35:233
134491390,4ptp4l0-21swapper/309:50:243
134491390,4ptp4l0-21swapper/309:40:233
134491390,4ptp4l0-21swapper/308:55:263
134491390,4ptp4l0-21swapper/308:50:133
134491390,4ptp4l0-21swapper/308:17:023
134491390,4ptp4l0-21swapper/307:58:433
134491390,4ptp4l0-21swapper/212:02:582
134491390,4ptp4l0-21swapper/211:38:122
134491390,4ptp4l0-21swapper/211:25:352
134491390,4ptp4l0-21swapper/209:40:242
134491390,4ptp4l0-21swapper/208:48:532
134491390,4ptp4l0-21swapper/208:23:012
134491390,4ptp4l0-21swapper/208:23:012
134491390,4ptp4l0-21swapper/208:15:152
134491390,4ptp4l0-21swapper/208:09:512
134491390,4ptp4l0-21swapper/207:37:092
134491390,4ptp4l0-21swapper/207:17:462
134491390,4ptp4l0-21swapper/111:35:191
134491390,4ptp4l0-21swapper/108:12:011
134491390,3ptp4l28036-21/usr/sbin/munin07:40:273
134491390,3ptp4l0-21swapper/307:25:083
134491390,3ptp4l0-21swapper/207:40:262
134491390,3ptp4l0-21swapper/111:20:071
134491380,5ptp4l27214-21grep12:15:222
134491380,4ptp4l18428-21unixbench_multi10:45:292
134491380,4ptp4l0-21swapper/312:30:153
134491380,4ptp4l0-21swapper/312:12:393
134491380,4ptp4l0-21swapper/311:45:153
134491380,4ptp4l0-21swapper/309:05:073
134491380,4ptp4l0-21swapper/308:05:223
134491380,4ptp4l0-21swapper/307:45:163
134491380,4ptp4l0-21swapper/307:15:013
134491380,4ptp4l0-21swapper/212:26:022
134491380,4ptp4l0-21swapper/211:54:452
134491380,4ptp4l0-21swapper/211:12:352
134491380,4ptp4l0-21swapper/211:05:112
134491380,4ptp4l0-21swapper/210:56:092
134491380,4ptp4l0-21swapper/109:50:111
134491380,3ptp4l0-21swapper/207:30:172
134491370,4ptp4l0-21swapper/310:42:253
134491370,4ptp4l0-21swapper/308:37:293
134491370,4ptp4l0-21swapper/308:25:193
134491370,4ptp4l0-21swapper/307:52:503
134491370,3ptp4l0-21swapper/308:00:163
134491350,3ptp4l0-21swapper/309:13:463
14199992620,4cyclictest41-21ksoftirqd/307:18:383
134491250,3ptp4l0-21swapper/307:35:083
118692225,11sleep20-21swapper/207:05:132
137891164,7phc2sys0-21swapper/307:05:213
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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