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2025-10-17 - 14:16
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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
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack3slot6.osadl.org (updated Fri Oct 17, 2025 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73349911137,18cyclictest0-21swapper/111:00:151
73349910123,20cyclictest0-21swapper/111:15:151
73349910113,20cyclictest0-21swapper/112:15:141
7334999818,20cyclictest0-21swapper/107:50:171
7334999815,20cyclictest0-21swapper/110:15:141
7334999617,19cyclictest0-21swapper/110:40:141
7334999614,20cyclictest0-21swapper/110:50:161
7334999517,20cyclictest0-21swapper/111:45:251
7334999514,20cyclictest0-21swapper/108:35:141
7334999513,19cyclictest0-21swapper/107:30:121
7334999512,20cyclictest0-21swapper/110:45:171
7334999420,18cyclictest0-21swapper/109:30:141
7334999413,21cyclictest0-21swapper/110:35:141
674929429,53sleep10-21swapper/107:05:471
7334999318,18cyclictest0-21swapper/108:55:241
7334999316,20cyclictest0-21swapper/108:30:161
7334999316,20cyclictest0-21swapper/108:30:151
7334999316,20cyclictest0-21swapper/107:20:121
7334999313,21cyclictest0-21swapper/108:25:101
7334999218,19cyclictest0-21swapper/109:40:131
7334999214,22cyclictest0-21swapper/111:25:131
7334999031,18cyclictest0-21swapper/109:15:131
715028916,26sleep00-21swapper/007:09:320
7334998717,17cyclictest0-21swapper/112:20:171
7330998613,12cyclictest0-21swapper/011:50:170
7330998613,12cyclictest0-21swapper/011:50:160
7334998517,30cyclictest0-21swapper/111:30:131
7334998419,19cyclictest0-21swapper/109:05:141
733099847,13cyclictest0-21swapper/007:55:240
733099846,18cyclictest27116-21apt-get12:35:150
7330998413,13cyclictest0-21swapper/008:05:150
7330998314,13cyclictest0-21swapper/011:35:160
7334998236,40cyclictest0-21swapper/108:05:131
7330998211,12cyclictest0-21swapper/009:45:140
7330998211,12cyclictest0-21swapper/009:45:130
733099815,17cyclictest13630-21apt-get08:55:230
7330998013,11cyclictest0-21swapper/012:20:210
733099799,13cyclictest0-21swapper/009:10:110
733099786,21cyclictest26479-21apt-get08:00:150
733099786,17cyclictest13379-21apt-get10:25:160
733099785,20cyclictest1983-21apt-get11:25:120
7330997812,12cyclictest0-21swapper/010:15:150
7334997648,16cyclictest26-21ksoftirqd/111:10:161
733099766,13cyclictest0-21swapper/010:45:150
733099762,67cyclictest16450-21taskset07:34:520
733099758,59cyclictest0-21swapper/008:50:170
733099756,57cyclictest25646-21apt-get11:00:120
7330997514,12cyclictest0-21swapper/008:40:130
7330997514,11cyclictest0-21swapper/008:15:130
733099747,59cyclictest0-21swapper/011:05:160
733099747,13cyclictest0-21swapper/007:25:140
733099746,19cyclictest18668-21apt-get10:40:150
733099745,19cyclictest3726-21apt-get11:30:150
733099743,65cyclictest9321-21apt-get11:45:240
7334997346,17cyclictest26-21ksoftirqd/109:55:131
733099739,14cyclictest0-21swapper/012:00:140
733099736,18cyclictest16853-21apt-get10:35:120
733099736,16cyclictest7413-21apt-get07:10:140
733099735,20cyclictest20959-21apt-get09:15:130
7330997324,44cyclictest24420-21latency_hist09:25:000
7330997320,46cyclictest0-21swapper/010:00:130
733099727,20cyclictest29177-21apt-get11:10:170
733099727,16cyclictest20128-21apt-get12:15:130
733099727,13cyclictest0-21swapper/010:50:140
733099726,19cyclictest30911-21apt-get11:15:140
733099725,19cyclictest24469-21apt-get09:25:180
733099723,63cyclictest27430-21sshd09:31:240
7330997224,42cyclictest20760-21apt-key07:45:040
733099716,18cyclictest32674-21apt-get11:20:140
733099715,18cyclictest29756-21apt-get09:40:140
733099713,60cyclictest6297-21apt-get08:35:150
7330997119,14cyclictest12073-21if_err_enp2s010:20:240
7330997111,12cyclictest0-21swapper/009:55:150
733099707,18cyclictest9670-21apt-get07:15:140
733099705,19cyclictest0-21swapper/010:10:110
733099705,18cyclictest11431-21apt-get07:20:140
733099704,18cyclictest6341-21apt-get10:05:220
733099703,62cyclictest24240-21/usr/sbin/munin07:55:010
7330997022,12cyclictest12924-21apt-key11:55:030
7330997021,14cyclictest10454-21cat08:45:250
7330997016,17cyclictest18356-21gpgconf07:37:170
7330997016,16cyclictest1398-21wc09:50:290
7330997011,12cyclictest0-21swapper/009:35:100
733099697,14cyclictest0-21swapper/008:10:150
733099694,58cyclictest0-21swapper/011:40:240
7330996931,32cyclictest23885-21/usr/sbin/munin10:55:360
7330996918,13cyclictest4970-21if_enp3s008:30:230
7330996918,13cyclictest4970-21if_enp3s008:30:220
7334996842,18cyclictest26-21ksoftirqd/109:35:121
733099686,13cyclictest0-21swapper/010:30:140
733099682,19cyclictest19093-21date09:10:010
7330996818,18cyclictest19000-21aten2.4_r3power07:40:160
7330996816,12cyclictest0-21swapper/012:10:160
7330996813,14cyclictest25258-21latency_hist12:30:000
7334996738,16cyclictest0-21swapper/112:30:161
733099675,16cyclictest0-21swapper/008:20:140
7330996717,13cyclictest17316-21cut09:05:010
7330996716,11cyclictest553-21runrttasks12:30:310
7334996534,18cyclictest0-21swapper/110:05:221
733099656,20cyclictest16600-21apt-get12:05:140
7330996517,15cyclictest3348-21cat08:25:230
7334996430,23cyclictest448-21dbus-daemon09:05:001
7334996344,11cyclictest26-21ksoftirqd/110:35:001
7334996244,10cyclictest0-21swapper/107:49:241
7334996243,10cyclictest26-21ksoftirqd/107:20:001
7334996229,23cyclictest448-21dbus-daemon08:00:011
7334996143,11cyclictest26-21ksoftirqd/111:55:411
7334996142,11cyclictest26-21ksoftirqd/108:25:011
7334996142,10cyclictest26-21ksoftirqd/108:45:001
7334996141,11cyclictest26-21ksoftirqd/110:55:241
7334996116,39cyclictest0-21swapper/107:35:221
7334996043,10cyclictest26-21ksoftirqd/109:45:151
7334996043,10cyclictest26-21ksoftirqd/109:45:151
7334996042,11cyclictest26-21ksoftirqd/112:10:331
7334996042,11cyclictest26-21ksoftirqd/112:00:131
7334996042,11cyclictest26-21ksoftirqd/111:20:261
7334996041,10cyclictest26-21ksoftirqd/111:05:151
7334996041,10cyclictest26-21ksoftirqd/110:15:011
7334996035,18cyclictest7322-21cyclictest08:00:121
7334996012,41cyclictest0-21swapper/110:25:221
733499597,45cyclictest0-21swapper/108:45:281
7334995942,10cyclictest26-21ksoftirqd/107:25:221
7334995928,22cyclictest448-21dbus-daemon12:39:001
7334995842,10cyclictest26-21ksoftirqd/107:15:011
7334995841,10cyclictest26-21ksoftirqd/109:30:011
7334995841,10cyclictest26-21ksoftirqd/109:10:161
7334995840,11cyclictest26-21ksoftirqd/111:40:331
7334995840,11cyclictest26-21ksoftirqd/110:00:251
7334995840,10cyclictest26-21ksoftirqd/111:55:011
7334995840,10cyclictest26-21ksoftirqd/111:55:001
7334995816,36cyclictest0-21swapper/108:15:141
733499577,43cyclictest0-21swapper/112:05:381
7334995741,10cyclictest26-21ksoftirqd/111:35:411
7334995740,10cyclictest26-21ksoftirqd/110:25:001
7334995740,10cyclictest26-21ksoftirqd/108:54:551
7334995739,11cyclictest26-21ksoftirqd/108:10:211
7334995739,10cyclictest26-21ksoftirqd/112:25:331
7334995640,10cyclictest26-21ksoftirqd/107:40:261
7334995639,10cyclictest26-21ksoftirqd/109:20:391
7334995638,11cyclictest26-21ksoftirqd/109:50:321
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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