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2026-05-17 - 15:04
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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 Sun May 17, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31444991007,84cyclictest6602-21apt-get07:30:110
2998829828,59sleep10-21swapper/107:05:191
44932940,5chrt4494-21/usr/sbin/munin11:55:311
31444999236,42cyclictest19009-21chrt08:05:130
3144499916,74cyclictest27771-21apt-get08:30:130
2969528933,40sleep00-21swapper/007:05:080
3144499877,68cyclictest31325-21apt-get08:40:120
31444998714,64cyclictest0-21swapper/010:55:140
31444998714,58cyclictest0-21swapper/010:10:150
3144499863,19cyclictest11408-21grep07:40:380
31444998631,41cyclictest14-21ksoftirqd/008:25:150
31444998629,45cyclictest14-21ksoftirqd/009:50:130
31444998615,60cyclictest0-21swapper/012:20:130
31444998614,58cyclictest0-21swapper/011:35:110
31444998614,57cyclictest0-21swapper/008:20:120
3144499856,69cyclictest9519-21apt-get10:40:140
3144499856,64cyclictest11452-21apt-get09:15:160
3144499856,63cyclictest20795-21apt-get08:10:150
31444998522,50cyclictest0-21swapper/008:55:120
31444998515,56cyclictest0-21swapper/011:00:140
3144499847,65cyclictest20552-21apt-get09:40:150
3144499846,64cyclictest5416-21apt-get12:00:140
3144499844,16cyclictest13512-21dpkg09:20:100
31444998417,61cyclictest243-21systemd-journal12:09:250
31444998417,55cyclictest0-21swapper/011:55:130
31444998416,56cyclictest0-21swapper/007:55:120
31444998415,62cyclictest0-21swapper/011:40:120
3144499839,62cyclictest29514-21chrt08:35:110
3144499836,62cyclictest3924-21apt-get10:25:130
3144499836,62cyclictest3924-21apt-get10:25:130
3144499836,62cyclictest16230-21apt-get12:30:140
3144499836,61cyclictest382-21apt-get10:15:130
31444998316,60cyclictest0-21swapper/011:20:160
31444998315,60cyclictest0-21swapper/010:50:130
31444998315,60cyclictest0-21swapper/007:50:120
31444998314,58cyclictest0-21swapper/010:30:230
31444998314,57cyclictest0-21swapper/012:10:150
31444998313,59cyclictest0-21swapper/011:05:140
31444998313,58cyclictest0-21swapper/009:05:130
31444998313,58cyclictest0-21swapper/007:45:130
31444998312,59cyclictest0-21swapper/008:45:130
3144499827,32cyclictest457-21dbus-daemon12:40:010
3144499826,66cyclictest27578-21apt-get10:00:120
3144499826,62cyclictest22339-21apt-get09:45:130
3144499826,60cyclictest25817-21apt-get09:55:140
31444998223,53cyclictest243-21systemd-journal08:15:320
31444998214,58cyclictest0-21swapper/011:45:130
31444998213,59cyclictest0-21swapper/007:20:130
31444998213,55cyclictest0-21swapper/011:50:130
3144499817,61cyclictest25571-21apt-get11:25:120
3144499816,65cyclictest5881-21apt-get09:00:170
3144499816,63cyclictest15258-21apt-get09:25:130
31444998115,51cyclictest0-21swapper/008:00:140
31444998114,60cyclictest0-21swapper/007:10:150
31444998114,56cyclictest0-21swapper/007:35:120
31444998114,55cyclictest0-21swapper/010:05:110
31444998113,58cyclictest0-21swapper/011:15:140
31444998113,57cyclictest0-21swapper/011:30:130
31444998113,57cyclictest0-21swapper/011:10:160
31444998113,57cyclictest0-21swapper/011:10:160
128312810,6sleep112833-21basename12:20:161
3145099804,45cyclictest0-21swapper/108:35:331
3144499806,61cyclictest9708-21apt-get09:10:260
3144499805,11cyclictest0-21swapper/007:17:050
3144499798,56cyclictest2186-21apt-get10:20:130
3144499797,57cyclictest4863-21apt-get07:25:130
3144499796,60cyclictest18741-21apt-get09:35:130
3144499796,58cyclictest2380-21apt-get08:50:130
3144499796,58cyclictest11557-21apt-get10:45:240
3144499786,56cyclictest14484-21apt-get12:25:130
109872780,7sleep110980-21apt-get12:15:131
31450997737,28cyclictest26-21ksoftirqd/109:20:231
3144499777,56cyclictest10980-21apt-get12:15:250
31444997713,54cyclictest0-21swapper/009:30:130
31450997634,30cyclictest26-21ksoftirqd/112:35:111
3144499746,56cyclictest7705-21apt-get10:35:130
31450997041,17cyclictest26-21ksoftirqd/108:50:121
3145099703,40cyclictest0-21swapper/108:30:221
31450996818,44cyclictest0-21swapper/107:25:261
3145099676,35cyclictest0-21swapper/107:37:031
31450996728,28cyclictest26-21ksoftirqd/110:00:131
3145099607,45cyclictest16803-21apt-get11:00:121
31450996016,23cyclictest10902-21needreboot07:40:291
31450996016,17cyclictest9290-21apt-key09:10:021
31450995934,19cyclictest26-21ksoftirqd/108:00:161
31450995920,22cyclictest10245-21ls09:10:391
31450995920,15cyclictest4744-21processes10:25:321
31450995920,15cyclictest4744-21processes10:25:321
31450995920,15cyclictest3876-21date10:25:021
31450995918,23cyclictest27262-21cat11:30:011
31450995912,11cyclictest0-21swapper/110:55:261
31450995819,23cyclictest5738-21expr12:00:191
31450995819,23cyclictest13278-21sshd10:50:031
3145099576,46cyclictest0-21swapper/107:45:171
31450995719,22cyclictest15946-21nfsd409:25:271
31450995619,23cyclictest17946-21cut12:35:021
31450995619,13cyclictest151rcu_preempt11:20:171
31450995617,23cyclictest31981-21awk11:40:371
31450995611,31cyclictest24730-21cut09:50:271
3145099559,41cyclictest0-21swapper/110:10:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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