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2026-05-25 - 12:31
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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 May 25, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27697999626,20cyclictest26-21ksoftirqd/119:20:131
2648429537,42sleep00-21swapper/019:05:230
27697998257,12cyclictest26-21ksoftirqd/122:15:121
27697998252,16cyclictest26-21ksoftirqd/121:20:141
2746628022,47sleep10-21swapper/119:09:121
27697997811,56cyclictest0-21swapper/120:10:121
27697997748,17cyclictest26-21ksoftirqd/123:35:151
27697997660,9cyclictest26-21ksoftirqd/123:05:101
27697997649,16cyclictest26-21ksoftirqd/119:45:121
2769799758,53cyclictest14829-21apt-get21:35:141
2769799758,53cyclictest14829-21apt-get21:35:141
2769799757,57cyclictest13208-21apt-get00:30:131
27697997548,18cyclictest26-21ksoftirqd/122:40:131
2769799747,52cyclictest6225-21apt-get00:10:131
27697997410,50cyclictest0-21swapper/100:35:151
2769299747,57cyclictest13662-21apt-get20:00:120
2769799738,52cyclictest24559-21apt-get23:30:141
2769799737,56cyclictest15402-21apt-get20:05:141
27697997327,40cyclictest243-21systemd-journal23:15:001
27697997310,50cyclictest0-21swapper/120:55:131
2769799727,53cyclictest9727-21apt-get00:20:141
27697997213,48cyclictest0-21swapper/121:30:231
27697997210,49cyclictest0-21swapper/123:50:121
27697997210,49cyclictest0-21swapper/121:50:141
2769799716,56cyclictest22458-21apt-get21:55:241
2769799716,53cyclictest7538-21apt-get21:15:141
2769799716,53cyclictest7538-21apt-get21:15:141
27697997142,18cyclictest26-21ksoftirqd/121:10:161
27697997128,38cyclictest13404-21date23:00:021
27697997126,39cyclictest457-21dbus-daemon23:45:011
27697997126,36cyclictest457-21dbus-daemon19:30:001
27697997111,50cyclictest0-21swapper/121:45:221
27697997111,50cyclictest0-21swapper/120:20:141
27697997110,50cyclictest0-21swapper/119:15:131
27697997110,50cyclictest0-21swapper/100:15:131
2769799707,52cyclictest901-21apt-get23:55:121
2769799707,50cyclictest31259-21apt-get22:20:131
2769799704,43cyclictest27536-21apt20:40:001
27697997042,22cyclictest26-21ksoftirqd/119:50:161
2769799702,65cyclictest25378-21sshd20:31:161
27697997011,47cyclictest0-21swapper/100:05:181
2769799696,50cyclictest29854-21apt-get23:45:111
27697996913,44cyclictest0-21swapper/120:50:121
27697996911,46cyclictest0-21swapper/122:30:251
27697996910,47cyclictest0-21swapper/119:30:121
2769799687,46cyclictest11904-21apt-get19:55:161
27697996823,37cyclictest0-21swapper/119:40:281
27697996811,46cyclictest0-21swapper/123:00:241
27697996811,45cyclictest0-21swapper/122:35:131
27697996810,45cyclictest0-21swapper/120:15:141
2769299684,42cyclictest0-21swapper/021:05:180
2769799677,50cyclictest11044-21apt-get21:25:131
2769799677,50cyclictest11044-21apt-get21:25:121
2769799677,46cyclictest2699-21apt-get00:00:141
2769799676,47cyclictest29460-21apt-get20:45:131
27697996743,16cyclictest26-21ksoftirqd/120:00:121
27697996710,48cyclictest0-21swapper/123:15:231
2769299677,46cyclictest0-21swapper/023:25:120
2769799668,42cyclictest2271-21apt-get21:00:131
2769799667,48cyclictest4008-21apt-get21:05:141
2769799667,44cyclictest9947-21apt-get22:50:151
27697996611,48cyclictest562-21runrttasks23:27:011
27697996611,47cyclictest0-21swapper/119:35:131
27697996611,43cyclictest0-21swapper/122:05:151
2769799659,45cyclictest0-21swapper/100:25:091
2769799656,45cyclictest27762-21apt-get19:10:141
27697996524,36cyclictest22637-21cron23:25:001
27697996511,45cyclictest0-21swapper/122:45:141
27697996511,41cyclictest0-21swapper/122:25:251
27697996510,42cyclictest0-21swapper/120:25:111
27692996523,12cyclictest0-21swapper/021:50:590
2769799646,45cyclictest16637-21apt-get21:40:121
27697996416,38cyclictest503-21snmpd22:01:431
2769799634,52cyclictest27722-21/usr/sbin/munin20:40:261
2769799634,52cyclictest27722-21/usr/sbin/munin20:40:261
2769299634,33cyclictest14-21ksoftirqd/021:00:380
27692996222,33cyclictest17306-21aten2.4-expect23:10:150
27692996210,39cyclictest151rcu_preempt20:55:180
2769799617,41cyclictest27756-21apt-get22:10:131
2769299615,18cyclictest31199-21apt-get20:50:120
2769299604,42cyclictest14-21ksoftirqd/021:12:390
2769299588,20cyclictest14-21ksoftirqd/022:00:150
2769299587,38cyclictest151rcu_preempt21:55:300
27692995824,29cyclictest0-21swapper/019:40:300
27692995725,23cyclictest14-21ksoftirqd/022:10:130
27692995722,16cyclictest18729-21aten2.4-expect21:45:240
27692995720,14cyclictest24552-21if_enp2s020:30:230
27692995713,15cyclictest8330-21/usr/sbin/munin00:15:230
2769299567,21cyclictest14-21ksoftirqd/020:15:160
2769299564,20cyclictest141ksoftirqd/021:42:020
2769299562,24cyclictest141ksoftirqd/000:03:430
2769299562,19cyclictest14167-21grep21:30:460
2769299562,18cyclictest12202-21ntpq00:25:280
27692995621,13cyclictest14-21ksoftirqd/023:55:010
2769299558,10cyclictest0-21swapper/021:15:250
2769299558,10cyclictest0-21swapper/021:15:250
2769299557,20cyclictest14-21ksoftirqd/019:20:230
2769299556,43cyclictest0-21swapper/000:20:290
27692995528,20cyclictest457-21dbus-daemon23:35:000
27692995514,15cyclictest151rcu_preempt20:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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