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2025-12-26 - 18:29
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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 rackdslot4.osadl.org (updated Fri Dec 26, 2025 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591229200,19phc2sys0-21swapper/307:08:243
241682201167,23sleep20-21swapper/207:07:552
242072200166,22sleep10-21swapper/107:08:261
221162197163,22sleep00-21swapper/007:05:070
332621620,3sleep23330-21irqrtprio08:35:192
2729921530,2sleep10-21swapper/109:25:131
2433828966,15sleep30-21swapper/307:10:013
50402790,2sleep30-21swapper/309:45:133
24633997030,4cyclictest33-21ksoftirqd/211:30:122
138491690,1ptp4l401ktimersoftd/312:15:043
24633996726,4cyclictest33-21ksoftirqd/207:20:142
138491670,1ptp4l401ktimersoftd/312:12:523
24631996631,6cyclictest9-21ksoftirqd/007:55:190
24633996520,5cyclictest33-21ksoftirqd/209:10:112
24631996426,8cyclictest9-21ksoftirqd/012:30:190
138491640,1ptp4l401ktimersoftd/312:23:333
24633996329,4cyclictest33-21ksoftirqd/207:30:112
24633996320,4cyclictest33-21ksoftirqd/208:25:202
24633996316,10cyclictest33-21ksoftirqd/210:55:222
24631996331,6cyclictest9-21ksoftirqd/010:00:000
24633996223,5cyclictest33-21ksoftirqd/211:49:432
24633996223,4cyclictest33-21ksoftirqd/211:00:252
24631996229,5cyclictest9-21ksoftirqd/009:15:000
24633996118,4cyclictest33-21ksoftirqd/207:15:142
24633996112,9cyclictest33-21ksoftirqd/208:30:232
2463299611,11cyclictest2315-21gnome-shell10:00:001
24631996128,6cyclictest9-21ksoftirqd/010:45:250
24633996020,4cyclictest33-21ksoftirqd/212:25:232
24633995923,5cyclictest33-21ksoftirqd/209:00:142
24633995922,5cyclictest33-21ksoftirqd/209:30:132
24633995921,4cyclictest33-21ksoftirqd/212:20:182
24633995913,9cyclictest33-21ksoftirqd/210:15:262
24633995913,9cyclictest33-21ksoftirqd/210:10:002
24633995912,9cyclictest33-21ksoftirqd/210:20:012
2463299595,7cyclictest9429-21wc09:55:001
24631995930,7cyclictest9-21ksoftirqd/007:50:010
24633995821,5cyclictest33-21ksoftirqd/209:20:212
24633995819,4cyclictest33-21ksoftirqd/209:40:212
24633995817,5cyclictest33-21ksoftirqd/208:20:142
24633995817,4cyclictest33-21ksoftirqd/209:55:162
24633995812,12cyclictest33-21ksoftirqd/210:35:182
24633995811,10cyclictest33-21ksoftirqd/209:05:202
24633995811,10cyclictest33-21ksoftirqd/209:05:202
24633995810,11cyclictest33-21ksoftirqd/210:30:172
24631995825,7cyclictest9-21ksoftirqd/008:25:000
62492570,3sleep30-21swapper/310:50:233
24633995723,5cyclictest33-21ksoftirqd/211:15:192
24633995720,8cyclictest33-21ksoftirqd/209:50:242
24633995717,5cyclictest33-21ksoftirqd/208:00:142
24633995717,5cyclictest33-21ksoftirqd/207:40:002
24633995717,4cyclictest33-21ksoftirqd/210:40:152
24633995710,10cyclictest33-21ksoftirqd/212:30:142
2463299577,7cyclictest19565-21ls09:10:001
2463299577,7cyclictest19565-21ls09:10:001
24631995725,6cyclictest9-21ksoftirqd/007:25:000
2463399567,10cyclictest33-21ksoftirqd/208:15:002
24633995621,4cyclictest33-21ksoftirqd/212:05:132
24633995619,4cyclictest33-21ksoftirqd/212:15:122
24633995615,4cyclictest33-21ksoftirqd/212:00:222
2463299566,7cyclictest24355-21latency_hist08:15:001
2463299564,6cyclictest241ktimersoftd/107:20:001
2463299561,11cyclictest31500-21unixbench_singl09:30:271
24633995521,5cyclictest33-21ksoftirqd/211:55:132
24633995519,4cyclictest33-21ksoftirqd/210:25:122
24633995517,5cyclictest33-21ksoftirqd/210:00:142
24633995514,4cyclictest33-21ksoftirqd/208:45:092
24633995510,10cyclictest33-21ksoftirqd/212:40:002
2463299555,6cyclictest13027-21cut11:05:131
2463299552,6cyclictest17014-21cat08:00:001
24631995536,5cyclictest9-21ksoftirqd/012:20:010
24631995532,8cyclictest9-21ksoftirqd/007:50:190
24631995532,7cyclictest9-21ksoftirqd/010:10:000
24631995526,7cyclictest9-21ksoftirqd/009:15:190
24631995526,10cyclictest9-21ksoftirqd/012:20:250
138491550,1ptp4l401ktimersoftd/311:48:323
138491550,1ptp4l401ktimersoftd/311:03:003
24633995415,4cyclictest33-21ksoftirqd/208:50:162
24633995414,7cyclictest33-21ksoftirqd/210:10:242
2463299545,7cyclictest22012-21latency_hist08:10:001
2463299545,6cyclictest15453-21tune2fs09:00:161
2463299544,7cyclictest24585-21sshd12:35:111
2463299544,7cyclictest11017-21grep12:05:221
2463299544,6cyclictest32110-21latency_hist10:40:001
2463299543,7cyclictest24953-21tr08:15:151
24631995428,4cyclictest9-21ksoftirqd/012:25:250
24631995424,6cyclictest9-21ksoftirqd/011:10:140
24631995420,4cyclictest9-21ksoftirqd/011:45:010
24634995322,8cyclictest41-21ksoftirqd/308:15:163
24633995325,4cyclictest33-21ksoftirqd/211:20:192
24633995321,3cyclictest33-21ksoftirqd/211:10:002
2463299536,6cyclictest24627-21find10:25:011
2463299534,6cyclictest28061-21irqrtprio10:30:191
2463299534,6cyclictest22861-21sed12:30:201
2463299533,7cyclictest25945-21grep07:10:231
2463299533,6cyclictest241ktimersoftd/111:30:001
2463299532,7cyclictest2173-21latency_hist10:45:001
24631995333,7cyclictest9-21ksoftirqd/011:55:010
24631995324,4cyclictest9-21ksoftirqd/011:45:130
24631995323,5cyclictest9-21ksoftirqd/008:15:250
24631995323,4cyclictest9-21ksoftirqd/011:00:140
24631995321,5cyclictest9-21ksoftirqd/010:10:160
24633995222,3cyclictest33-21ksoftirqd/209:15:152
24633995215,9cyclictest33-21ksoftirqd/207:50:272
2463299524,7cyclictest15735-21irqrtprio11:10:181
2463299523,7cyclictest32485-21expr07:25:131
24631995234,6cyclictest9-21ksoftirqd/007:35:190
24631995232,5cyclictest9-21ksoftirqd/008:50:010
24631995232,11cyclictest9-21ksoftirqd/008:10:000
24631995231,9cyclictest9-21ksoftirqd/012:09:590
24631995231,10cyclictest9-21ksoftirqd/011:25:170
24631995224,6cyclictest9-21ksoftirqd/009:30:140
24631995224,4cyclictest9-21ksoftirqd/009:00:180
24631995223,7cyclictest9-21ksoftirqd/010:30:270
24631995223,5cyclictest9-21ksoftirqd/009:40:200
24631995223,5cyclictest9-21ksoftirqd/007:40:230
24631995222,5cyclictest9-21ksoftirqd/008:35:190
24631995221,5cyclictest9-21ksoftirqd/008:40:250
24631995221,4cyclictest9-21ksoftirqd/012:10:140
24631995220,4cyclictest9-21ksoftirqd/010:25:170
24631995220,4cyclictest9-21ksoftirqd/007:15:000
24634995118,7cyclictest41-21ksoftirqd/311:05:173
24633995115,9cyclictest33-21ksoftirqd/211:50:292
2463299515,7cyclictest25902-21ls11:30:201
2463299515,6cyclictest26548-21unixbench_singl09:20:251
2463299515,6cyclictest1584-21tail11:45:251
2463299513,6cyclictest15470-21irqrtprio10:05:181
2463299511,5cyclictest241ktimersoftd/111:00:201
24631995133,6cyclictest9-21ksoftirqd/012:00:130
24631995131,8cyclictest9-21ksoftirqd/009:35:140
24631995131,7cyclictest9-21ksoftirqd/011:55:160
24631995124,11cyclictest9-21ksoftirqd/007:30:010
24631995121,6cyclictest9-21ksoftirqd/008:55:140
24634995016,5cyclictest41-21ksoftirqd/307:20:263
24633995027,3cyclictest33-21ksoftirqd/209:25:232
24633995022,5cyclictest33-21ksoftirqd/207:10:182
2463299505,6cyclictest13532-21cut10:00:221
2463299504,7cyclictest21188-21sed10:15:271
2463299504,6cyclictest7116-21sed08:45:001
2463299504,6cyclictest32149-21sed11:45:001
2463299503,7cyclictest499-21irqrtprio09:35:191
2463299503,7cyclictest29994-21expr07:20:131
2463299503,6cyclictest5995-21grep11:55:221
2463299503,6cyclictest3452-21missed_timers09:40:221
2463299503,6cyclictest30657-21cut08:25:191
2463299503,5cyclictest17774-21fschecks_time08:00:161
2463299502,7cyclictest7648-21df_abs12:00:141
2463299502,6cyclictest28166-21irqrtprio11:35:201
2463299502,5cyclictest5481-21irqrtprio09:45:181
24631995034,4cyclictest9-21ksoftirqd/008:25:140
24631995033,5cyclictest9-21ksoftirqd/008:50:270
24631995032,5cyclictest9-21ksoftirqd/009:45:170
24631995032,4cyclictest9-21ksoftirqd/009:25:190
24631995030,5cyclictest9-21ksoftirqd/011:30:170
24631995029,8cyclictest9-21ksoftirqd/010:40:190
24631995029,8cyclictest9-21ksoftirqd/009:10:000
24631995029,8cyclictest9-21ksoftirqd/009:10:000
24633994915,5cyclictest33-21ksoftirqd/211:10:172
2463299492,7cyclictest15378-21irqrtprio12:15:171
2463299492,6cyclictest2634-21cstates10:45:141
2463299492,6cyclictest241ktimersoftd/110:50:171
24631994932,8cyclictest9-21ksoftirqd/009:50:240
24631994932,7cyclictest9-21ksoftirqd/010:19:590
24631994932,7cyclictest9-21ksoftirqd/008:10:130
24631994930,8cyclictest9-21ksoftirqd/011:15:260
24631994930,5cyclictest9-21ksoftirqd/010:20:170
24631994921,6cyclictest9-21ksoftirqd/011:35:150
24631994920,7cyclictest9-21ksoftirqd/009:25:010
24631994920,6cyclictest9-21ksoftirqd/012:35:100
24631994919,5cyclictest9-21ksoftirqd/011:05:130
24631994919,5cyclictest9-21ksoftirqd/008:00:140
24631994917,6cyclictest9-21ksoftirqd/010:35:150
24634994814,7cyclictest41-21ksoftirqd/308:05:013
24633994834,3cyclictest33-21ksoftirqd/212:10:232
24633994832,3cyclictest33-21ksoftirqd/209:49:592
24633994827,9cyclictest33-21ksoftirqd/208:55:192
24633994819,4cyclictest33-21ksoftirqd/209:37:352
2463299484,6cyclictest19049-21ls11:15:281
2463299484,5cyclictest241ktimersoftd/108:50:011
2463299482,7cyclictest241ktimersoftd/110:55:241
24631994830,7cyclictest9-21ksoftirqd/011:20:200
24631994826,8cyclictest9-21ksoftirqd/008:30:180
24631994817,3cyclictest9-21ksoftirqd/010:00:140
24633994733,3cyclictest33-21ksoftirqd/207:43:462
24633994726,3cyclictest33-21ksoftirqd/208:05:232
24633994725,3cyclictest33-21ksoftirqd/210:45:132
2463299474,5cyclictest20022-21cstates09:10:111
2463299473,7cyclictest18434-21ptp4l10:10:251
2463299473,5cyclictest7515-21expr07:40:131
2463299471,6cyclictest12260-21/usr/sbin/munin07:50:171
2463299471,6cyclictest12199-21egrep12:10:131
2463299470,7cyclictest6016-21sed07:35:221
2463299470,7cyclictest19454-21cat12:25:001
24631994731,4cyclictest9-21ksoftirqd/011:00:000
24631994730,5cyclictest9-21ksoftirqd/007:30:130
24631994725,8cyclictest9-21ksoftirqd/007:15:010
2463499469,7cyclictest41-21ksoftirqd/310:35:013
24634994636,3cyclictest41-21ksoftirqd/307:15:253
2463399466,3cyclictest33-21ksoftirqd/211:25:252
2463299464,6cyclictest241ktimersoftd/111:20:261
2463299462,6cyclictest27543-21cstates08:20:141
2463299461,7cyclictest22702-21sed09:15:151
24631994627,10cyclictest9-21ksoftirqd/010:50:200
24634994515,10cyclictest41-21ksoftirqd/308:40:233
24634994512,4cyclictest41-21ksoftirqd/311:35:003
24633994529,7cyclictest33-21ksoftirqd/210:50:252
2463399450,7cyclictest33-21ksoftirqd/208:15:162
2463299454,7cyclictest13328-21cut08:55:191
2463299453,7cyclictest2705-21expr07:30:111
2463299453,6cyclictest2623-21cat11:50:161
2463299453,6cyclictest19825-21cstates12:25:141
2463499442,5cyclictest121rcu_preempt10:30:013
24634994414,3cyclictest41-21ksoftirqd/311:15:173
24634994412,3cyclictest41-21ksoftirqd/307:55:003
2463399442,6cyclictest33-21ksoftirqd/211:35:182
24633994411,6cyclictest33-21ksoftirqd/207:55:172
138491440,0ptp4l401ktimersoftd/308:34:553
138491440,0ptp4l401ktimersoftd/307:40:583
2463499436,7cyclictest41-21ksoftirqd/309:50:143
2463499432,5cyclictest121rcu_preempt09:30:003
2463499430,6cyclictest121rcu_preempt12:01:083
2463399437,8cyclictest33-21ksoftirqd/207:25:142
24633994331,2cyclictest33-21ksoftirqd/207:45:132
138491430,0ptp4l401ktimersoftd/309:18:473
2463499429,7cyclictest41-21ksoftirqd/308:30:003
24634994212,3cyclictest41-21ksoftirqd/308:20:193
24634994210,7cyclictest41-21ksoftirqd/310:00:193
2463499420,2cyclictest121rcu_preempt11:10:153
24633994224,5cyclictest33-21ksoftirqd/211:40:302
24633994220,11cyclictest33-21ksoftirqd/208:40:192
2463299424,7cyclictest10124-21ls07:45:131
2463299423,6cyclictest1256-21mailstats08:30:241
138491420,0ptp4l401ktimersoftd/309:11:283
138491420,0ptp4l401ktimersoftd/307:55:173
2463499419,4cyclictest41-21ksoftirqd/309:30:193
24634994136,3cyclictest41-21ksoftirqd/312:00:003
24634994122,6cyclictest41-21ksoftirqd/309:40:273
24634994111,7cyclictest41-21ksoftirqd/308:45:233
24634994111,3cyclictest41-21ksoftirqd/312:35:113
2463499410,5cyclictest121rcu_preempt10:25:013
2463499409,3cyclictest41-21ksoftirqd/307:25:223
24634994037,2cyclictest41-21ksoftirqd/310:10:003
24634994017,3cyclictest41-21ksoftirqd/310:37:343
2463499401,3cyclictest41-21ksoftirqd/311:40:303
2463499399,3cyclictest41-21ksoftirqd/307:30:213
2463499398,8cyclictest41-21ksoftirqd/312:25:143
2463499396,7cyclictest41-21ksoftirqd/311:50:273
2463499395,2cyclictest41-21ksoftirqd/308:10:003
2463499394,4cyclictest41-21ksoftirqd/312:30:203
24634993934,3cyclictest41-21ksoftirqd/308:40:003
2463499393,2cyclictest121rcu_preempt09:00:183
2463499391,2cyclictest121rcu_preempt11:20:143
24634993911,3cyclictest41-21ksoftirqd/311:35:273
2463499390,5cyclictest121rcu_preempt10:15:003
2463299393,6cyclictest9905-21gpgv08:50:011
2463499385,7cyclictest41-21ksoftirqd/308:50:193
2463499385,7cyclictest41-21ksoftirqd/307:45:203
2463499384,2cyclictest41-21ksoftirqd/309:55:253
24634993835,2cyclictest41-21ksoftirqd/310:20:003
24634993825,11cyclictest41-21ksoftirqd/308:15:013
2463499382,4cyclictest0-21swapper/310:55:213
2463499381,2cyclictest121rcu_preempt09:35:153
2463499377,3cyclictest41-21ksoftirqd/307:35:253
24634993733,3cyclictest41-21ksoftirqd/309:10:003
24634993733,3cyclictest41-21ksoftirqd/309:10:003
2463499370,2cyclictest0-21swapper/312:05:153
2463299370,7cyclictest25-21ksoftirqd/108:35:171
2463499366,4cyclictest41-21ksoftirqd/309:20:123
24634993632,3cyclictest41-21ksoftirqd/311:25:193
24632993613,4cyclictest25-21ksoftirqd/110:25:221
138491360,0ptp4l401ktimersoftd/308:55:213
2463499353,2cyclictest121rcu_preempt10:45:193
2463499351,3cyclictest0-21swapper/310:40:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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