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2026-04-15 - 18:24
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Wed Apr 15, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1605721830,5sleep016059-21sh07:08:380
2497321810,5sleep224977-21sort07:09:452
708221640,3sleep30-21swapper/307:09:023
319512940,3sleep231908-21sh07:13:582
110322850,3sleep311040-21sort07:13:303
126282730,5sleep112625-21sort07:13:321
165122620,5sleep10-21swapper/111:00:271
134491620,4ptp4l8492-21timerandwakeup07:15:251
134491590,4ptp4l14527-21cat09:50:011
134491590,4ptp4l0-21swapper/110:20:231
134491590,3ptp4l0-21swapper/308:35:183
134491590,3ptp4l0-21swapper/207:45:282
742099582,12cyclictest13059-21sh07:11:570
45112580,8sleep1742399cyclictest11:45:171
222692580,3sleep10-21swapper/112:24:121
742099567,6cyclictest0-21swapper/011:10:140
134491560,4ptp4l0-21swapper/312:18:063
134491560,4ptp4l0-21swapper/308:45:263
134491560,4ptp4l0-21swapper/212:05:322
134491550,4ptp4l0-21swapper/112:16:091
134491540,4ptp4l28254-21tee07:09:201
134491540,4ptp4l0-21swapper/312:33:413
742099532,7cyclictest388-21gmain11:55:120
742099530,11cyclictest14373-21ps12:05:240
134491530,5ptp4l0-21swapper/112:11:041
134491530,1ptp4l0-21swapper/311:55:203
134491530,13ptp4l0-21swapper/309:20:193
742099525,6cyclictest25236-21grep12:30:130
742099525,6cyclictest0-21swapper/008:55:280
742099523,5cyclictest2623-21ls10:30:260
742099521,10cyclictest1437-21needreboot09:20:190
134491520,4ptp4l0-21swapper/208:49:512
134491520,4ptp4l0-21swapper/110:55:201
134491520,4ptp4l0-21swapper/110:40:001
134491520,4ptp4l0-21swapper/110:30:271
134491520,3ptp4l0-21swapper/108:26:351
742099515,7cyclictest0-21swapper/011:45:220
742099513,6cyclictest2864-21df_abs08:15:150
134491510,9ptp4l0-21swapper/209:05:032
134491510,4ptp4l0-21swapper/308:18:533
134491510,4ptp4l0-21swapper/212:12:222
134491510,3ptp4l0-21swapper/308:30:313
134491510,3ptp4l0-21swapper/209:19:052
742099505,6cyclictest30674-21wc11:30:270
742099505,11cyclictest0-21swapper/010:00:220
742099502,6cyclictest9-21ksoftirqd/008:35:130
134491500,4ptp4l0-21swapper/308:57:293
742099497,10cyclictest0-21swapper/009:10:230
742099496,5cyclictest0-21swapper/009:50:120
742099495,6cyclictest0-21swapper/010:35:280
134491490,4ptp4l0-21swapper/312:22:573
134491490,4ptp4l0-21swapper/110:03:511
134491490,3ptp4l0-21swapper/109:53:461
134491490,10ptp4l0-21swapper/109:12:021
7426994842,3cyclictest31314-21apt-key11:35:003
742099482,6cyclictest0-21swapper/010:10:250
742099481,6cyclictest9-21ksoftirqd/011:20:250
134491480,4ptp4l0-21swapper/110:45:461
134491480,16ptp4l0-21swapper/210:25:472
742099476,6cyclictest0-21swapper/008:50:220
742099475,10cyclictest0-21swapper/011:05:270
742099470,11cyclictest16069-21cat11:00:230
134491470,4ptp4l0-21swapper/209:33:282
134491470,3ptp4l0-21swapper/211:21:282
742499461,7cyclictest0-21swapper/207:30:152
742499461,7cyclictest0-21swapper/207:30:152
742099467,6cyclictest18542-21systemctl09:55:240
134691460,10getstats0-21swapper/011:15:280
134491460,4ptp4l0-21swapper/312:38:013
134491460,3ptp4l0-21swapper/211:29:272
7426994540,3cyclictest41-21ksoftirqd/307:59:593
7426994534,9cyclictest41-21ksoftirqd/308:10:273
742099451,6cyclictest9-21ksoftirqd/010:20:160
742099450,15cyclictest8264-21cat10:45:150
134491450,5ptp4l24308-21apt-get11:20:101
134491450,4ptp4l0-21swapper/307:30:233
134491450,4ptp4l0-21swapper/307:30:233
134491450,4ptp4l0-21swapper/211:51:122
134491450,4ptp4l0-21swapper/109:43:021
134491450,3ptp4l0-21swapper/308:20:183
134491450,3ptp4l0-21swapper/207:55:362
134491450,11ptp4l0-21swapper/112:37:591
134491450,10ptp4l0-21swapper/210:40:502
7426994437,3cyclictest41-21ksoftirqd/309:45:013
7426994433,9cyclictest41-21ksoftirqd/308:50:263
742699443,2cyclictest121rcu_preempt10:17:113
742699441,10cyclictest41-21ksoftirqd/311:00:403
7426994410,4cyclictest41-21ksoftirqd/307:40:413
742099446,6cyclictest0-21swapper/011:50:140
742099446,11cyclictest0-21swapper/008:21:410
134491440,9ptp4l0-21swapper/212:36:542
134491440,9ptp4l0-21swapper/210:55:552
134491440,7ptp4l742399cyclictest08:50:111
134491440,5ptp4l0-21swapper/312:25:133
134491440,4ptp4l0-21swapper/211:44:392
134491440,3ptp4l0-21swapper/107:49:251
134491440,3ptp4l0-21swapper/107:35:201
134491440,11ptp4l0-21swapper/307:27:563
7426994338,3cyclictest41-21ksoftirqd/309:00:123
7426994332,9cyclictest41-21ksoftirqd/309:55:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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