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2026-04-13 - 11:31
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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 100 highest latencies:
System rack3slot6.osadl.org (updated Mon Apr 13, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12315998467,10cyclictest14-21ksoftirqd/021:35:240
12315998111,62cyclictest0-21swapper/023:35:120
1231599787,20cyclictest0-21swapper/021:25:020
12315997860,10cyclictest14-21ksoftirqd/023:25:120
12315997761,11cyclictest12406-21latency_hist19:10:020
12315997749,13cyclictest14-21ksoftirqd/020:35:140
12315997627,42cyclictest0-21swapper/023:40:130
12315997615,19cyclictest0-21swapper/019:45:150
1202427516,50sleep00-21swapper/019:08:540
1202427516,50sleep00-21swapper/019:08:540
12317997415,18cyclictest14257-21cron19:15:001
12315997248,14cyclictest14-21ksoftirqd/020:30:150
12317997112,29cyclictest12930-21/usr/sbin/munin23:40:371
12315997111,23cyclictest24492-21apt-get21:15:130
12315997111,23cyclictest24492-21apt-get21:15:130
1231799707,23cyclictest26-21ksoftirqd/120:39:001
12317997017,15cyclictest26-21ksoftirqd/122:36:521
12315997041,17cyclictest14-21ksoftirqd/019:55:130
12315997038,18cyclictest0-21swapper/019:30:120
149582690,7sleep1251rcuc/120:45:341
1231599699,19cyclictest16941-21apt-get23:55:130
12315996912,18cyclictest562-21runrttasks19:39:030
1202526922,37sleep10-21swapper/119:08:551
1202526922,37sleep10-21swapper/119:08:551
12317996813,36cyclictest0-21swapper/122:15:151
12315996841,15cyclictest14-21ksoftirqd/021:05:150
12315996839,15cyclictest0-21swapper/020:15:120
12315996819,42cyclictest28404-21aten2.4-expect00:25:170
1231599677,19cyclictest0-21swapper/020:10:010
1231599675,20cyclictest0-21swapper/023:50:150
1231599675,20cyclictest0-21swapper/021:10:180
1231599675,20cyclictest0-21swapper/021:10:180
12315996739,17cyclictest0-21swapper/022:55:110
1231799667,24cyclictest26-21ksoftirqd/123:55:371
12315996641,15cyclictest0-21swapper/019:20:110
1231799659,8cyclictest151rcu_preempt22:25:371
1231599657,20cyclictest12364-21apt-get20:40:120
1231599656,10cyclictest0-21swapper/020:59:180
12315996542,12cyclictest1941-21apt-get21:40:140
12315996537,15cyclictest0-21swapper/022:00:120
12315996533,23cyclictest19343-21apt-get21:00:130
12315996533,20cyclictest10650-21apt-get22:05:140
12315996530,25cyclictest0-21swapper/023:30:130
12317996417,42cyclictest0-21swapper/123:15:291
12315996435,15cyclictest14183-21apt-get22:15:130
12315996430,24cyclictest0-21swapper/022:10:120
12317996313,24cyclictest3184-21runrttasks20:12:501
12317996312,30cyclictest0-21swapper/123:12:221
12315996339,14cyclictest0-21swapper/019:50:130
12315996337,14cyclictest28766-21apt-get21:25:230
12315996332,19cyclictest21246-21apt-get00:05:230
12317996215,10cyclictest0-21swapper/119:40:201
12317996214,42cyclictest251rcuc/122:50:411
12317996214,19cyclictest251rcuc/120:44:071
12317996210,29cyclictest0-21swapper/120:30:421
12315996240,11cyclictest3678-21apt-get21:45:140
12315996239,11cyclictest30250-21apt-get23:00:130
12315996237,17cyclictest14-21ksoftirqd/020:50:210
12315996233,13cyclictest14103-21apt-get20:45:130
12315996231,22cyclictest0-21swapper/021:55:130
12315996230,23cyclictest0-21swapper/022:20:140
12315996230,18cyclictest13631-21apt-get23:45:130
1231799618,14cyclictest26-21ksoftirqd/119:50:291
12317996113,20cyclictest251rcuc/121:22:501
1231599617,42cyclictest19209-21apt-get00:00:130
1231599617,19cyclictest0-21swapper/022:45:150
1231599616,46cyclictest1829-21apt-get20:10:130
12315996139,14cyclictest31753-21apt-get00:35:130
12315996138,19cyclictest14-21ksoftirqd/021:50:170
12315996136,15cyclictest18456-21apt-get19:25:120
12315996132,22cyclictest0-21swapper/023:15:160
12315996130,20cyclictest30015-21apt-get00:30:130
12315996111,19cyclictest5986-21runrttasks20:20:270
12317996012,36cyclictest29068-21cstates21:25:291
1231599609,20cyclictest32703-21grep23:05:290
12315996039,11cyclictest26755-21apt-get22:50:140
12315996034,14cyclictest17984-21apt-get22:25:230
12315996030,23cyclictest0-21swapper/022:30:130
12315996028,18cyclictest21466-21apt-get22:35:120
12315996011,25cyclictest24602-21cron00:15:000
12315996010,25cyclictest23842-21tail19:40:150
1231799598,24cyclictest26-21ksoftirqd/121:30:121
12317995940,8cyclictest26-21ksoftirqd/123:28:531
12317995930,12cyclictest26-21ksoftirqd/120:05:261
12317995926,13cyclictest26-21ksoftirqd/119:55:551
12317995916,19cyclictest251rcuc/120:52:191
12317995914,40cyclictest0-21swapper/122:20:301
12317995914,20cyclictest251rcuc/123:50:221
12317995914,18cyclictest251rcuc/123:24:231
12317995913,18cyclictest251rcuc/122:12:271
12317995912,19cyclictest251rcuc/123:36:151
1231599599,20cyclictest27691-21vmstat00:20:390
1231599596,21cyclictest0-21swapper/023:20:210
1231599596,21cyclictest0-21swapper/020:25:190
1231599596,21cyclictest0-21swapper/019:15:080
12315995926,24cyclictest0-21swapper/022:40:140
12315995911,19cyclictest30725-21taskset20:00:120
12315995910,24cyclictest30566-21basename21:30:160
1231799587,33cyclictest17582-21apt-get20:55:121
1231799587,24cyclictest26-21ksoftirqd/121:40:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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