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2026-05-05 - 19:21
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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 Tue May 05, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
830721260,6chrt8303-21grep08:40:380
6614210721,40sleep00-21swapper/007:07:380
7017999476,13cyclictest0-21swapper/010:30:230
7017998863,12cyclictest14-21ksoftirqd/010:50:130
7017998862,13cyclictest14-21ksoftirqd/009:55:140
7017998660,13cyclictest14-21ksoftirqd/008:15:110
7017998158,13cyclictest14-21ksoftirqd/012:35:110
7017997951,18cyclictest14-21ksoftirqd/007:10:130
7017997652,14cyclictest14-21ksoftirqd/008:45:110
701799747,56cyclictest10892-21apt-get10:35:120
7017997410,22cyclictest0-21swapper/012:30:330
7021997240,21cyclictest26-21ksoftirqd/112:05:121
7017997140,18cyclictest106932sleep008:50:120
661227114,45sleep10-21swapper/107:07:371
217602710,6sleep021763-21sed09:20:260
701799708,55cyclictest0-21swapper/011:40:130
701799707,16cyclictest11124-21apt-get07:20:120
7017997016,26cyclictest19497-21turbostat11:00:000
7017997015,29cyclictest13894-21grep07:25:370
297332700,7sleep0171rcuc/011:25:360
7021996932,13cyclictest26-21ksoftirqd/108:25:211
7017996917,46cyclictest0-21swapper/010:25:130
7017996917,46cyclictest0-21swapper/010:25:130
7017996917,25cyclictest24557-21grep07:55:390
7017996917,25cyclictest19833-21apt-get12:30:010
7017996917,19cyclictest18102-21sh07:40:010
7017996916,28cyclictest28698-21grep08:10:010
7017996916,20cyclictest1-21systemd11:20:000
7017996915,29cyclictest2506-21sort08:25:350
7017996844,12cyclictest25268-21apt-get08:00:120
7017996840,14cyclictest0-21swapper/007:45:120
7017996839,18cyclictest9362-21apt-get07:15:140
7017996816,26cyclictest3441-21awk10:15:000
7017996816,26cyclictest32532-21expr11:35:170
7017996816,25cyclictest6939-21turbostat.cron10:25:000
7017996816,25cyclictest31066-21munin-run09:55:000
7017996816,21cyclictest3651-21apt-get08:30:130
7017996816,21cyclictest23512-21cstates11:10:180
7017996816,21cyclictest17805-21awk12:25:000
7017996816,21cyclictest17805-21awk12:25:000
7017996816,19cyclictest11117-21uname12:05:250
7017996815,28cyclictest15781-21latency_hist09:05:010
7017996815,22cyclictest13170-21irqstats10:40:250
7017996815,21cyclictest27010-21taskset11:20:100
7017996815,20cyclictest15748-21awk12:20:010
91382670,8chrt0-21swapper/012:00:170
7021996711,34cyclictest0-21swapper/109:05:081
7017996718,23cyclictest16257-21df09:05:200
7017996717,24cyclictest17547-21diskmemload09:10:150
7017996716,27cyclictest989-21sed08:20:360
7017996716,26cyclictest5416-21basename11:50:160
7017996716,26cyclictest22258-21/usr/sbin/munin11:05:330
7017996716,26cyclictest20318-21grep11:00:270
7017996716,25cyclictest29915-21grep08:10:370
7017996716,25cyclictest14862-21sort07:30:170
7017996716,23cyclictest28069-21munin-run09:40:000
7017996716,21cyclictest8260-21grep11:55:380
7017996716,20cyclictest455-21rs:main0
7017996716,20cyclictest20289-21ps09:15:310
7017996715,27cyclictest25254-21sshd09:30:240
7017996715,26cyclictest12426-21seq12:10:110
7017996715,23cyclictest6454-21tail08:35:340
7021996612,36cyclictest28933-21aten2.4_r3power08:10:181
7017996617,24cyclictest23082-21aten2.4_r3power09:25:180
7017996617,19cyclictest0-21swapper/009:42:170
7017996616,25cyclictest22408-21cut07:50:260
7017996616,21cyclictest18939-21head07:40:250
7017996615,26cyclictest1839-21grep10:05:270
7017996615,25cyclictest12697-21ls08:55:180
7017996615,22cyclictest4292-21grep11:45:370
7017996615,20cyclictest3595-21apt-get10:15:110
7017996615,20cyclictest3595-21apt-get10:15:110
7017996612,22cyclictest0-21swapper/009:45:340
701799656,50cyclictest30491-21apt-get11:30:120
7017996510,22cyclictest0-21swapper/010:03:460
702199649,14cyclictest151rcu_preempt09:30:161
7021996410,16cyclictest26-21ksoftirqd/110:15:081
7021996410,16cyclictest26-21ksoftirqd/110:15:081
7021996329,14cyclictest26-21ksoftirqd/109:03:251
7021996317,29cyclictest8753-21sort12:00:011
7021996317,29cyclictest24560-21sed07:55:391
7021996310,35cyclictest21019-21awk12:30:371
702199626,25cyclictest26-21ksoftirqd/110:05:321
702199626,24cyclictest26-21ksoftirqd/109:25:371
702199625,35cyclictest503-21snmpd08:44:081
702199624,23cyclictest26-21ksoftirqd/112:20:051
702199624,23cyclictest26-21ksoftirqd/112:20:051
702199618,35cyclictest0-21swapper/111:30:011
702199614,41cyclictest28783-21latency_hist09:45:011
702199614,23cyclictest26-21ksoftirqd/111:20:051
702199608,46cyclictest251rcuc/109:35:181
702199602,23cyclictest26-21ksoftirqd/111:30:161
702199599,19cyclictest18046-21telnet10:55:161
702199598,34cyclictest0-21swapper/110:45:391
702199596,25cyclictest11124-21apt-get07:20:151
7021995928,13cyclictest26-21ksoftirqd/110:44:211
7021995916,19cyclictest251rcuc/112:38:551
7021995913,41cyclictest0-21swapper/108:00:191
7021995912,41cyclictest0-21swapper/110:26:251
7021995912,41cyclictest0-21swapper/110:26:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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