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2026-07-18 - 00:12
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Fri Jul 17, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3150621440,6sleep03211799cyclictest10:35:240
2225721360,4sleep03211799cyclictest10:15:260
3211799737,13cyclictest18779-21awk11:20:010
32120997231,9cyclictest41-21ksoftirqd/307:20:213
32120997129,4cyclictest41-21ksoftirqd/311:10:013
32117997110,11cyclictest10597-21ntpq11:00:230
32117997110,11cyclictest10597-21ntpq11:00:230
32120996833,4cyclictest41-21ksoftirqd/311:40:003
3211999682,36cyclictest0-21swapper/211:35:162
84442670,3sleep10-21swapper/109:45:261
32120996734,9cyclictest41-21ksoftirqd/307:40:283
32120996730,10cyclictest41-21ksoftirqd/312:20:183
32119996733,4cyclictest33-21ksoftirqd/209:00:182
3211799678,12cyclictest6963-21cat09:45:010
32119996632,3cyclictest33-21ksoftirqd/210:20:002
3211799666,19cyclictest9726-21sed12:10:000
32120996537,3cyclictest41-21ksoftirqd/308:50:003
32120996533,4cyclictest41-21ksoftirqd/312:00:143
32120996526,4cyclictest41-21ksoftirqd/307:45:153
3211799659,17cyclictest25857-21df_abs08:05:170
3211799658,18cyclictest13452-21unixbench_singl11:05:280
264132650,6sleep10-21swapper/109:15:211
32120996432,8cyclictest41-21ksoftirqd/312:25:213
32119996431,9cyclictest33-21ksoftirqd/208:05:222
32119996426,6cyclictest33-21ksoftirqd/210:35:192
3211999642,33cyclictest0-21swapper/207:30:272
3211799647,16cyclictest0-21swapper/008:40:150
32120996331,8cyclictest41-21ksoftirqd/309:40:183
32120996331,5cyclictest41-21ksoftirqd/310:00:003
32120996328,3cyclictest41-21ksoftirqd/309:25:253
32119996327,8cyclictest33-21ksoftirqd/208:55:152
32117996311,11cyclictest1317-21runrttasks09:35:420
32120996231,4cyclictest41-21ksoftirqd/312:40:013
32120996230,5cyclictest41-21ksoftirqd/308:55:303
32120996229,4cyclictest41-21ksoftirqd/308:35:143
32119996228,4cyclictest33-21ksoftirqd/207:55:222
32119996227,4cyclictest33-21ksoftirqd/209:35:272
3211799629,12cyclictest3736-21sed11:55:200
32117996211,10cyclictest1317-21runrttasks10:47:350
32120996130,4cyclictest41-21ksoftirqd/311:55:173
32120996127,4cyclictest41-21ksoftirqd/307:50:263
32120996122,7cyclictest41-21ksoftirqd/312:15:183
32120996118,3cyclictest41-21ksoftirqd/310:45:003
32119996131,3cyclictest33-21ksoftirqd/210:40:232
32119996126,4cyclictest33-21ksoftirqd/210:00:002
32119996125,9cyclictest33-21ksoftirqd/208:50:162
32119996120,16cyclictest33-21ksoftirqd/211:25:002
3211899610,14cyclictest27439-21chrt10:25:541
3211799619,11cyclictest1317-21runrttasks11:26:110
3211799617,14cyclictest24211-21sed11:30:190
3211799617,10cyclictest0-21swapper/012:20:210
3211799616,20cyclictest0-21swapper/008:22:370
32117996111,11cyclictest1317-21runrttasks11:40:270
32117996111,11cyclictest1317-21runrttasks11:22:540
32120996028,3cyclictest41-21ksoftirqd/311:10:273
32120996024,9cyclictest41-21ksoftirqd/309:30:283
32120996022,16cyclictest41-21ksoftirqd/310:55:153
32119996028,4cyclictest33-21ksoftirqd/207:25:282
32119996016,4cyclictest33-21ksoftirqd/207:10:522
3211899600,18cyclictest30479-21df_abs08:15:151
3211899600,12cyclictest31885-21chrt09:25:561
3211799608,12cyclictest1301-21snmpd11:40:000
3211799608,11cyclictest10386-21chrt09:50:180
3211799607,14cyclictest8538-21run-parts09:45:270
32117996011,10cyclictest1317-21runrttasks11:46:330
32117996010,12cyclictest1317-21runrttasks08:34:570
32117996010,10cyclictest28376-21if_enp4s009:20:170
32117996010,10cyclictest1317-21runrttasks08:28:430
134491600,10ptp4l0-21swapper/208:10:132
32120995929,4cyclictest41-21ksoftirqd/309:50:273
32120995927,4cyclictest41-21ksoftirqd/307:30:273
32120995925,4cyclictest41-21ksoftirqd/309:05:163
32120995925,4cyclictest41-21ksoftirqd/309:05:163
32120995923,4cyclictest41-21ksoftirqd/309:35:233
32119995929,4cyclictest33-21ksoftirqd/209:34:152
32119995927,4cyclictest33-21ksoftirqd/212:05:002
3211899590,12cyclictest17969-21chrt07:49:161
3211799599,18cyclictest10595-21sed12:10:190
3211799598,10cyclictest1-21systemd09:04:250
32117995911,11cyclictest1317-21runrttasks07:53:520
32117995911,10cyclictest1317-21runrttasks12:17:170
134491590,4ptp4l24364-21ntp_states09:10:243
134491590,4ptp4l0-21swapper/111:46:301
32120995828,3cyclictest41-21ksoftirqd/310:30:133
32120995827,3cyclictest41-21ksoftirqd/312:10:143
32120995827,3cyclictest41-21ksoftirqd/309:45:283
32120995826,3cyclictest41-21ksoftirqd/310:45:273
32120995824,7cyclictest41-21ksoftirqd/307:25:223
32120995823,9cyclictest41-21ksoftirqd/308:15:153
32119995827,9cyclictest33-21ksoftirqd/211:45:262
32119995818,8cyclictest33-21ksoftirqd/209:40:572
3211899580,12cyclictest2403-21taskset09:35:101
32117995814,10cyclictest23247-21taskset12:37:100
134491580,4ptp4l0-21swapper/111:31:121
134491580,3ptp4l0-21swapper/311:00:203
134491580,3ptp4l0-21swapper/311:00:203
32120995726,4cyclictest41-21ksoftirqd/307:55:223
32120995726,3cyclictest41-21ksoftirqd/307:15:273
32120995725,8cyclictest41-21ksoftirqd/308:50:153
32120995725,4cyclictest41-21ksoftirqd/308:30:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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