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2026-05-11 - 08:49
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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 Mon May 11, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1067321450,5sleep21272499cyclictest20:15:152
12725998332,4cyclictest41-21ksoftirqd/321:25:183
12725997033,7cyclictest41-21ksoftirqd/322:22:423
12725996931,5cyclictest41-21ksoftirqd/322:30:103
12725996832,4cyclictest41-21ksoftirqd/322:15:153
12724996746,14cyclictest33-21ksoftirqd/222:39:592
12724996734,7cyclictest33-21ksoftirqd/221:32:452
12724996730,7cyclictest33-21ksoftirqd/223:54:592
12725996635,4cyclictest41-21ksoftirqd/323:57:493
12725996633,4cyclictest41-21ksoftirqd/320:50:323
12725996631,4cyclictest41-21ksoftirqd/323:42:593
12725996631,3cyclictest41-21ksoftirqd/323:06:393
12725996532,4cyclictest41-21ksoftirqd/322:35:263
12725996532,4cyclictest41-21ksoftirqd/321:10:233
12724996530,12cyclictest33-21ksoftirqd/219:32:502
283962640,4sleep00-21swapper/000:20:200
12725996437,3cyclictest41-21ksoftirqd/319:24:363
12725996434,4cyclictest41-21ksoftirqd/319:15:063
12725996433,5cyclictest41-21ksoftirqd/323:50:003
12725996432,3cyclictest41-21ksoftirqd/323:50:273
12725996431,5cyclictest41-21ksoftirqd/323:00:013
12724996431,7cyclictest33-21ksoftirqd/219:14:022
12725996330,6cyclictest41-21ksoftirqd/323:13:273
12724996330,7cyclictest33-21ksoftirqd/222:13:212
12724996329,4cyclictest33-21ksoftirqd/222:23:362
12725996229,4cyclictest41-21ksoftirqd/320:57:333
12725996229,3cyclictest41-21ksoftirqd/321:55:583
12722996229,5cyclictest9-21ksoftirqd/000:05:270
212752610,7sleep21272499cyclictest22:55:262
12725996130,3cyclictest41-21ksoftirqd/321:40:193
12724996129,7cyclictest33-21ksoftirqd/200:04:062
12722996129,3cyclictest9-21ksoftirqd/020:06:360
134491600,4ptp4l17400-21latency_hist21:40:013
12725996030,3cyclictest41-21ksoftirqd/300:28:063
12725996028,3cyclictest41-21ksoftirqd/320:11:033
12724996032,4cyclictest33-21ksoftirqd/200:17:542
1272499602,34cyclictest0-21swapper/223:15:132
12722996031,4cyclictest9-21ksoftirqd/000:00:280
12725995927,4cyclictest41-21ksoftirqd/322:15:003
12725995926,4cyclictest41-21ksoftirqd/322:50:203
12725995925,8cyclictest41-21ksoftirqd/323:00:413
12725995925,10cyclictest41-21ksoftirqd/319:30:013
12725995913,7cyclictest41-21ksoftirqd/323:21:293
12724995930,8cyclictest33-21ksoftirqd/223:14:192
12724995930,6cyclictest33-21ksoftirqd/223:42:072
12724995930,4cyclictest33-21ksoftirqd/223:32:412
134491580,4ptp4l0-21swapper/019:20:250
12725995828,3cyclictest41-21ksoftirqd/300:09:593
12725995825,3cyclictest41-21ksoftirqd/320:21:443
12724995830,4cyclictest33-21ksoftirqd/219:57:492
12724995829,4cyclictest33-21ksoftirqd/220:26:062
12724995828,4cyclictest33-21ksoftirqd/200:25:512
289182570,5sleep20-21swapper/200:20:272
134491570,3ptp4l19031-21ls21:40:270
12725995728,3cyclictest41-21ksoftirqd/319:55:163
12725995727,9cyclictest41-21ksoftirqd/300:00:393
12725995726,4cyclictest41-21ksoftirqd/320:05:353
12725995724,4cyclictest41-21ksoftirqd/321:33:323
12725995714,8cyclictest41-21ksoftirqd/321:21:053
12724995729,4cyclictest33-21ksoftirqd/221:14:002
12724995726,4cyclictest33-21ksoftirqd/223:00:592
12724995723,4cyclictest33-21ksoftirqd/220:40:542
12724995710,4cyclictest33-21ksoftirqd/200:05:192
12722995730,4cyclictest9-21ksoftirqd/023:25:170
134491560,3ptp4l0-21swapper/121:30:351
134491560,3ptp4l0-21swapper/120:00:301
12725995633,5cyclictest41-21ksoftirqd/320:30:253
12725995629,5cyclictest41-21ksoftirqd/321:18:013
12725995628,4cyclictest41-21ksoftirqd/322:30:013
12725995627,5cyclictest41-21ksoftirqd/323:40:003
12725995626,10cyclictest41-21ksoftirqd/323:25:233
12725995622,3cyclictest41-21ksoftirqd/323:32:553
12724995630,4cyclictest33-21ksoftirqd/221:46:532
12724995629,8cyclictest33-21ksoftirqd/223:37:062
12724995629,7cyclictest33-21ksoftirqd/221:25:472
12724995621,8cyclictest33-21ksoftirqd/219:20:022
12722995651,3cyclictest111rcuc/021:05:290
134491550,4ptp4l21957-21apt-get19:30:121
134491550,3ptp4l0-21swapper/121:05:231
134491550,3ptp4l0-21swapper/019:36:350
12725995521,3cyclictest41-21ksoftirqd/321:46:113
12724995526,4cyclictest33-21ksoftirqd/200:34:022
12724995521,4cyclictest33-21ksoftirqd/220:50:142
12724995519,5cyclictest33-21ksoftirqd/221:55:192
12724995519,5cyclictest33-21ksoftirqd/219:37:162
12722995536,9cyclictest9-21ksoftirqd/019:55:000
1272299550,6cyclictest9-21ksoftirqd/023:35:200
134491540,5ptp4l20104-21expr22:55:130
12725995430,4cyclictest41-21ksoftirqd/320:46:133
12725995423,3cyclictest41-21ksoftirqd/320:39:083
12724995424,4cyclictest33-21ksoftirqd/220:09:082
12724995423,4cyclictest33-21ksoftirqd/219:50:132
1272299543,8cyclictest9-21ksoftirqd/022:30:240
1272299542,7cyclictest101ktimersoftd/021:35:000
1272299540,49cyclictest101ktimersoftd/022:25:000
134491530,4ptp4l0-21swapper/220:32:422
134491530,4ptp4l0-21swapper/119:45:251
12725995332,11cyclictest41-21ksoftirqd/319:47:023
12725995331,8cyclictest41-21ksoftirqd/319:39:523
12725995330,12cyclictest41-21ksoftirqd/319:50:483
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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