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2026-06-26 - 23:40
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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 Jun 26, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21664997033,4cyclictest9-21ksoftirqd/007:40:000
2166599692,55cyclictest20675-21cut10:35:181
21665996815,49cyclictest6264-21/usr/sbin/munin08:55:161
21665996615,48cyclictest30640-21seq07:29:531
21665996513,11cyclictest12373-21chrt10:16:431
21665996513,11cyclictest12373-21chrt10:16:431
2166599647,11cyclictest25078-21ntpq07:15:261
21665996411,9cyclictest4068-21sed07:40:191
2166599639,12cyclictest17278-21df_abs08:10:141
2166599638,10cyclictest0-21swapper/108:05:141
2166599629,11cyclictest10335-21df_abs07:55:151
2166599628,20cyclictest0-21swapper/111:55:171
2166599628,11cyclictest10414-21timerwakeupswit12:30:261
2166599627,12cyclictest30933-21awk10:55:261
2166599622,12cyclictest13218-21cut08:00:181
21665996212,11cyclictest1188-21taskset12:12:141
21665996212,10cyclictest31374-21chrt12:08:051
21665996211,11cyclictest22150-21chrt10:40:021
2166599619,11cyclictest6975-21ls07:45:271
2166599617,10cyclictest3128-21timerwakeupswit11:05:261
2166599617,10cyclictest1812-21sed07:35:201
2166599613,17cyclictest0-21swapper/109:00:121
2166599613,17cyclictest0-21swapper/109:00:121
21665996112,9cyclictest14372-21ps11:30:251
21665996112,11cyclictest3265-21chrt09:58:011
21664996127,5cyclictest9-21ksoftirqd/009:20:000
21664996126,3cyclictest9-21ksoftirqd/012:19:590
55892600,5sleep20-21swapper/212:20:252
2166599608,9cyclictest20696-21missed_timers09:25:211
2166599608,11cyclictest9987-21timerandwakeup11:20:271
2166599607,9cyclictest4979-21expr10:00:251
2166599607,11cyclictest1122-21date09:55:011
2166599606,11cyclictest8968-21cut10:10:171
2166599605,10cyclictest0-21swapper/111:35:221
2166599598,12cyclictest26901-21cut08:30:191
2166599598,10cyclictest0-21swapper/110:50:211
2166599597,11cyclictest4027-21cpuspeed_turbos11:10:131
2166599595,9cyclictest29815-21cat09:45:191
2166599595,9cyclictest0-21swapper/108:40:251
2166599595,17cyclictest0-21swapper/111:45:171
2166599595,11cyclictest6770-21irqrtprio11:15:181
134491590,3ptp4l0-21swapper/012:05:220
2166599589,8cyclictest4437-21ntp_states08:50:241
2166599588,11cyclictest11513-21grep12:35:151
2166599586,11cyclictest0-21swapper/107:55:001
2166599586,11cyclictest0-21swapper/107:55:001
2166599583,16cyclictest0-21swapper/111:00:161
21664995829,4cyclictest9-21ksoftirqd/011:05:210
21664995828,4cyclictest9-21ksoftirqd/011:55:000
2166599579,16cyclictest6232-21df_abs10:05:121
2166599576,10cyclictest27639-21cat12:00:161
21664995733,3cyclictest9-21ksoftirqd/009:35:110
21664995725,4cyclictest9-21ksoftirqd/008:15:000
21664995724,9cyclictest9-21ksoftirqd/009:05:170
21664995724,9cyclictest9-21ksoftirqd/009:05:170
21664995722,4cyclictest9-21ksoftirqd/009:05:000
21664995722,4cyclictest9-21ksoftirqd/009:05:000
134491570,4ptp4l0-21swapper/310:10:243
134491570,3ptp4l11152-21/usr/sbin/munin12:35:223
134491570,3ptp4l0-21swapper/109:37:321
21665995612,10cyclictest18840-21ssh09:20:251
134491560,4ptp4l0-21swapper/209:37:532
134491560,4ptp4l0-21swapper/009:12:350
134491560,3ptp4l0-21swapper/208:31:002
134491560,3ptp4l0-21swapper/008:20:240
134491560,3ptp4l0-21swapper/008:20:240
33952550,3sleep23398-21unixbench_singl12:15:272
21664995525,5cyclictest9-21ksoftirqd/009:45:130
21664995524,4cyclictest9-21ksoftirqd/007:50:000
21664995520,6cyclictest9-21ksoftirqd/011:20:010
21664995519,5cyclictest9-21ksoftirqd/007:15:000
134491550,4ptp4l0-21swapper/107:05:191
134491550,4ptp4l0-21swapper/107:05:191
134491550,4ptp4l0-21swapper/011:34:150
134491550,3ptp4l0-21swapper/107:30:221
134491550,13ptp4l0-21swapper/210:36:552
21664995420,5cyclictest9-21ksoftirqd/007:15:320
134491540,4ptp4l0-21swapper/211:24:512
134491540,4ptp4l0-21swapper/009:58:120
134491540,4ptp4l0-21swapper/009:44:490
134491540,4ptp4l0-21swapper/009:32:230
134491540,3ptp4l0-21swapper/007:59:040
2166599539,41cyclictest24856-21sort08:25:201
2166599537,11cyclictest12895-21/usr/sbin/munin10:20:181
2166599534,11cyclictest6331-21latency_hist12:25:001
21664995325,7cyclictest9-21ksoftirqd/012:00:240
21664995324,7cyclictest9-21ksoftirqd/010:55:240
21664995322,5cyclictest9-21ksoftirqd/008:25:140
21664995322,5cyclictest9-21ksoftirqd/007:40:270
21664995320,5cyclictest9-21ksoftirqd/010:00:140
134491530,4ptp4l0-21swapper/312:17:033
134491530,4ptp4l0-21swapper/310:19:183
134491530,4ptp4l0-21swapper/310:19:183
134491530,4ptp4l0-21swapper/208:25:432
21665995212,36cyclictest11271-21ls11:25:151
21664995222,3cyclictest9-21ksoftirqd/011:45:240
21664995221,4cyclictest9-21ksoftirqd/008:30:160
21664995218,6cyclictest9-21ksoftirqd/009:25:200
134491520,9ptp4l19333-21apt-get07:05:143
134491520,9ptp4l19333-21apt-get07:05:143
134491520,9ptp4l0-21swapper/211:30:172
134491520,4ptp4l0-21swapper/310:46:553
134491520,4ptp4l0-21swapper/211:05:592
134491520,4ptp4l0-21swapper/210:26:002
134491520,4ptp4l0-21swapper/012:13:030
134491520,3ptp4l0-21swapper/011:35:220
2166699511,47cyclictest12008-21irqstats12:35:192
2166599519,39cyclictest0-21swapper/107:25:011
21664995124,3cyclictest9-21ksoftirqd/010:20:160
21664995118,7cyclictest9-21ksoftirqd/011:40:140
134491510,5ptp4l0-21swapper/307:50:203
134491510,5ptp4l0-21swapper/307:50:203
134491510,4ptp4l0-21swapper/310:08:403
134491510,4ptp4l0-21swapper/208:54:482
134491510,3ptp4l0-21swapper/012:23:550
21664995016,4cyclictest9-21ksoftirqd/008:20:000
134491500,4ptp4l0-21swapper/209:26:002
134491500,4ptp4l0-21swapper/008:40:060
134491500,10ptp4l28819-21latency_hist10:55:012
2166599498,10cyclictest0-21swapper/110:34:511
2166499494,3cyclictest121rcu_preempt08:35:220
21664994921,5cyclictest9-21ksoftirqd/011:55:230
21664994921,4cyclictest9-21ksoftirqd/011:10:190
21664994921,2cyclictest9-21ksoftirqd/010:35:200
21664994920,5cyclictest9-21ksoftirqd/010:45:150
21664994918,6cyclictest9-21ksoftirqd/011:25:130
21664994917,5cyclictest9-21ksoftirqd/009:00:000
134491490,4ptp4l0-21swapper/310:39:383
134491490,3ptp4l0-21swapper/011:24:560
134491490,2ptp4l121rcu_preempt11:18:122
2166599488,37cyclictest0-21swapper/109:05:211
2166599488,37cyclictest0-21swapper/109:05:211
21664994815,6cyclictest9-21ksoftirqd/007:25:130
21664994814,4cyclictest9-21ksoftirqd/011:00:150
134491480,9ptp4l0-21swapper/210:10:122
21667994731,4cyclictest41-21ksoftirqd/307:40:133
2166799470,3cyclictest121rcu_preempt07:48:553
21665994712,32cyclictest22212-21iostat08:20:171
21665994712,32cyclictest22212-21iostat08:20:171
2166499470,7cyclictest9-21ksoftirqd/010:25:270
134491470,4ptp4l0-21swapper/209:48:462
134491470,3ptp4l2166699cyclictest11:00:412
134491470,2ptp4l0-21swapper/209:51:242
134491470,10ptp4l0-21swapper/207:05:132
134491470,10ptp4l0-21swapper/207:05:132
2166599466,6cyclictest27560-21ls09:40:201
2166599466,38cyclictest0-21swapper/108:45:251
21664994642,3cyclictest9-21ksoftirqd/010:40:220
2166499460,2cyclictest121rcu_preempt08:00:220
134491460,5ptp4l0-21swapper/308:55:113
134491460,4ptp4l0-21swapper/208:41:182
287942450,4sleep22166699cyclictest12:00:262
2166599458,7cyclictest13160-21perl09:10:161
21664994530,3cyclictest9-21ksoftirqd/009:50:270
2166499452,2cyclictest9-21ksoftirqd/010:15:160
2166499452,2cyclictest9-21ksoftirqd/010:15:160
134491450,9ptp4l0-21swapper/210:44:002
134491450,4ptp4l2318-21gnome-shell11:27:593
134491450,12ptp4l0-21swapper/207:52:302
134491450,12ptp4l0-21swapper/207:52:302
21667994434,9cyclictest41-21ksoftirqd/309:05:143
21667994434,9cyclictest41-21ksoftirqd/309:05:143
21667994433,9cyclictest41-21ksoftirqd/310:55:253
2166599446,8cyclictest16954-21runrttasks10:25:331
2166499444,2cyclictest121rcu_preempt12:35:160
21664994414,4cyclictest9-21ksoftirqd/010:50:190
21664994413,10cyclictest9-21ksoftirqd/012:25:190
2166499440,3cyclictest121rcu_preempt09:20:220
167972440,3sleep2311rcuc/208:10:002
134491440,9ptp4l0-21swapper/307:25:133
134491440,9ptp4l0-21swapper/209:55:572
134491440,5ptp4l2318-21gnome-shell10:57:592
134491440,5ptp4l0-21swapper/007:07:410
134491440,5ptp4l0-21swapper/007:07:410
134491440,4ptp4l14579-21ls11:30:273
134491440,4ptp4l0-21swapper/308:13:443
134491440,3ptp4l30906-21apt-get07:30:132
134491440,10ptp4l0-21swapper/207:21:102
21664994316,4cyclictest9-21ksoftirqd/010:34:410
21664994315,5cyclictest9-21ksoftirqd/008:05:160
2166499431,3cyclictest9-21ksoftirqd/010:05:270
2166499430,2cyclictest121rcu_preempt07:35:000
134491430,9ptp4l0-21swapper/211:42:112
134491430,9ptp4l0-21swapper/210:04:422
134491430,9ptp4l0-21swapper/209:33:102
134491430,8ptp4l0-21swapper/211:39:352
134491430,7ptp4l0-21swapper/309:23:283
134491430,4ptp4l22668-21df_inode11:50:131
134491430,4ptp4l0-21swapper/307:30:143
134491430,4ptp4l0-21swapper/012:34:270
134491430,3ptp4l0-21swapper/108:39:091
134491430,3ptp4l0-21swapper/010:14:170
134491430,10ptp4l0-21swapper/309:03:163
134491430,10ptp4l0-21swapper/309:03:163
21667994236,3cyclictest41-21ksoftirqd/308:35:013
21664994236,4cyclictest9-21ksoftirqd/008:45:260
134691420,10getstats0-21swapper/008:52:040
134491420,9ptp4l0-21swapper/310:42:133
134491420,9ptp4l0-21swapper/211:10:462
134491420,8ptp4l0-21swapper/208:36:322
134491420,8ptp4l0-21swapper/207:14:492
134491420,5ptp4l747-21/usr/sbin/munin07:35:233
134491420,5ptp4l0-21swapper/311:15:153
134491420,4ptp4l7418-21irqstats12:25:181
134491420,4ptp4l2717-21ntp_states11:05:223
134491420,4ptp4l25872-21ls09:35:263
134491420,4ptp4l17410-21apt-get09:20:122
134491420,4ptp4l0-21swapper/310:25:103
2166799410,2cyclictest121rcu_preempt12:10:283
2166599419,7cyclictest22141-21hddtemp_smartct07:10:281
2166599414,6cyclictest22595-21ps09:30:181
2166599411,6cyclictest0-21swapper/111:41:181
134491410,8ptp4l0-21swapper/212:14:222
134491410,5ptp4l12362-21/usr/sbin/munin08:00:203
134491410,5ptp4l0-21swapper/308:22:123
134491410,5ptp4l0-21swapper/308:22:123
134491410,5ptp4l0-21swapper/210:45:132
134491410,4ptp4l9814-21users09:00:272
134491410,4ptp4l9814-21users09:00:272
134491410,4ptp4l28913-21diskstats07:25:142
134491410,4ptp4l11554-21ntp_states09:05:212
134491410,4ptp4l11554-21ntp_states09:05:212
134491410,4ptp4l0-21swapper/311:20:253
134491410,4ptp4l0-21swapper/309:30:143
134491410,3ptp4l26519-21df07:20:140
134491410,3ptp4l0-21swapper/308:29:013
134491410,3ptp4l0-21swapper/211:26:102
21667994036,2cyclictest41-21ksoftirqd/308:20:003
21667994035,3cyclictest41-21ksoftirqd/309:40:193
21667994034,3cyclictest41-21ksoftirqd/312:00:013
2166799402,3cyclictest41-21ksoftirqd/311:52:513
134491400,5ptp4l0-21swapper/307:20:243
134491400,4ptp4l15077-21/usr/sbin/munin09:15:133
134491400,4ptp4l13679-21ls09:10:192
134491400,4ptp4l0-21swapper/309:55:193
134491400,4ptp4l0-21swapper/308:05:203
134491400,4ptp4l0-21swapper/212:30:172
134491400,4ptp4l0-21swapper/212:09:342
134491400,4ptp4l0-21swapper/211:55:142
134491400,4ptp4l0-21swapper/211:51:162
134491400,4ptp4l0-21swapper/211:45:222
134491400,4ptp4l0-21swapper/210:15:352
134491400,4ptp4l0-21swapper/210:15:352
134491400,4ptp4l0-21swapper/208:10:592
134491400,4ptp4l0-21swapper/207:40:592
134491400,3ptp4l3318-21apt-get08:50:123
134491400,3ptp4l30588-21apt-get08:40:033
134491400,3ptp4l0-21swapper/310:32:333
134491400,2ptp4l23151-21ls08:20:282
134491400,2ptp4l23151-21ls08:20:282
21667993935,2cyclictest41-21ksoftirqd/309:50:003
21667993934,3cyclictest41-21ksoftirqd/312:08:503
21667993934,3cyclictest41-21ksoftirqd/307:15:223
2166799390,3cyclictest121rcu_preempt12:31:563
21664993934,3cyclictest9-21ksoftirqd/007:50:180
21664993934,3cyclictest9-21ksoftirqd/007:50:180
134491390,4ptp4l27600-21irqrtprio10:50:183
134491390,4ptp4l23281-21grep07:10:403
134491390,4ptp4l0-21swapper/311:10:163
134491390,4ptp4l0-21swapper/311:00:203
134491390,4ptp4l0-21swapper/310:00:203
134491390,4ptp4l0-21swapper/309:50:153
134491390,4ptp4l0-21swapper/309:27:573
134491390,4ptp4l0-21swapper/308:37:443
134491390,4ptp4l0-21swapper/307:58:003
134491390,4ptp4l0-21swapper/212:27:082
134491390,4ptp4l0-21swapper/210:20:142
134491390,4ptp4l0-21swapper/209:40:302
134491390,4ptp4l0-21swapper/208:49:182
134491390,4ptp4l0-21swapper/208:15:242
134491390,4ptp4l0-21swapper/208:01:062
134491390,4ptp4l0-21swapper/207:55:422
134491390,4ptp4l0-21swapper/207:48:132
134491390,4ptp4l0-21swapper/112:15:251
134491390,4ptp4l0-21swapper/109:15:221
134491390,3ptp4l5366-21apt-get08:55:002
134491390,3ptp4l19628-21df_inode08:15:141
134491390,3ptp4l15758-21df_inode11:35:153
134491390,3ptp4l0-21swapper/312:00:143
134491390,3ptp4l0-21swapper/207:38:062
21667993834,3cyclictest41-21ksoftirqd/309:10:133
2166799381,2cyclictest121rcu_preempt12:22:493
134491380,4ptp4l0-21swapper/311:45:153
134491380,4ptp4l0-21swapper/308:45:293
134491380,4ptp4l0-21swapper/210:30:032
134491380,4ptp4l0-21swapper/210:08:012
134491380,4ptp4l0-21swapper/207:16:012
134491380,3ptp4l0-21swapper/312:27:383
134491380,3ptp4l0-21swapper/310:20:143
134491380,3ptp4l0-21swapper/209:17:262
134491370,4ptp4l0-21swapper/110:46:261
134491360,4ptp4l0-21swapper/311:41:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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